Primitive Type u8

The 8-bit unsigned integer type.

See also the std::u8 module.

Methods

impl u8

pub const fn min_value() -> u8

Returns the smallest value that can be represented by this integer type.

Examples

Basic usage:

assert_eq!(u8::min_value(), 0);

pub const fn max_value() -> u8

Returns the largest value that can be represented by this integer type.

Examples

Basic usage:

assert_eq!(u8::max_value(), 255);

pub fn from_str_radix(src: &str, radix: u32) -> Result<u8, ParseIntError>

Converts a string slice in a given base to an integer.

The string is expected to be an optional + sign followed by digits. Leading and trailing whitespace represent an error. Digits are a subset of these characters, depending on radix:

• 0-9
• a-z
• A-Z

Panics

This function panics if radix is not in the range from 2 to 36.

Examples

Basic usage:

assert_eq!(u8::from_str_radix("A", 16), Ok(10));

pub const fn count_ones(self) -> u32

Returns the number of ones in the binary representation of self.

Examples

Basic usage:

let n = 0b01001100u8;

assert_eq!(n.count_ones(), 3);

pub const fn count_zeros(self) -> u32

Returns the number of zeros in the binary representation of self.

Examples

Basic usage:

assert_eq!(u8::max_value().count_zeros(), 0);

pub const fn leading_zeros(self) -> u32

Returns the number of leading zeros in the binary representation of self.

Examples

Basic usage:

let n = u8::max_value() >> 2;

assert_eq!(n.leading_zeros(), 2);

pub const fn trailing_zeros(self) -> u32

Returns the number of trailing zeros in the binary representation of self.

Examples

Basic usage:

let n = 0b0101000u8;

assert_eq!(n.trailing_zeros(), 3);

pub fn rotate_left(self, n: u32) -> u8

Shifts the bits to the left by a specified amount, n, wrapping the truncated bits to the end of the resulting integer.

Please note this isn't the same operation as <<!

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why u64 is used here.

let n = 0x0123456789ABCDEFu64;
let m = 0x3456789ABCDEF012u64;

assert_eq!(n.rotate_left(12), m);

pub fn rotate_right(self, n: u32) -> u8

Shifts the bits to the right by a specified amount, n, wrapping the truncated bits to the beginning of the resulting integer.

Please note this isn't the same operation as >>!

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why u64 is used here.

let n = 0x0123456789ABCDEFu64;
let m = 0xDEF0123456789ABCu64;

assert_eq!(n.rotate_right(12), m);

pub const fn swap_bytes(self) -> u8

Reverses the byte order of the integer.

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why u16 is used here.

let n: u16 = 0b0000000_01010101;
assert_eq!(n, 85);

let m = n.swap_bytes();

assert_eq!(m, 0b01010101_00000000);
assert_eq!(m, 21760);

pub fn reverse_bits(self) -> u8

🔬 This is a nightly-only experimental API. (reverse_bits #48763)

Reverses the bit pattern of the integer.

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why u16 is used here.

#![feature(reverse_bits)]

let n: u16 = 0b0000000_01010101;
assert_eq!(n, 85);

let m = n.reverse_bits();

assert_eq!(m, 0b10101010_00000000);
assert_eq!(m, 43520);

pub const fn from_be(x: u8) -> u8

Converts an integer from big endian to the target's endianness.

On big endian this is a no-op. On little endian the bytes are swapped.

Examples

Basic usage:

let n = 0x1Au8;

if cfg!(target_endian = "big") {
    assert_eq!(u8::from_be(n), n)
} else {
    assert_eq!(u8::from_be(n), n.swap_bytes())
}

pub const fn from_le(x: u8) -> u8

Converts an integer from little endian to the target's endianness.

On little endian this is a no-op. On big endian the bytes are swapped.

Examples

Basic usage:

let n = 0x1Au8;

if cfg!(target_endian = "little") {
    assert_eq!(u8::from_le(n), n)
} else {
    assert_eq!(u8::from_le(n), n.swap_bytes())
}

pub const fn to_be(self) -> u8

Converts self to big endian from the target's endianness.

On big endian this is a no-op. On little endian the bytes are swapped.

Examples

Basic usage:

let n = 0x1Au8;

if cfg!(target_endian = "big") {
    assert_eq!(n.to_be(), n)
} else {
    assert_eq!(n.to_be(), n.swap_bytes())
}

pub const fn to_le(self) -> u8

Converts self to little endian from the target's endianness.

On little endian this is a no-op. On big endian the bytes are swapped.

Examples

Basic usage:

let n = 0x1Au8;

if cfg!(target_endian = "little") {
    assert_eq!(n.to_le(), n)
} else {
    assert_eq!(n.to_le(), n.swap_bytes())
}

pub fn checked_add(self, rhs: u8) -> Option<u8>

Checked integer addition. Computes self + rhs, returning None if overflow occurred.

Examples

Basic usage:

assert_eq!((u8::max_value() - 2).checked_add(1), Some(u8::max_value() - 1));
assert_eq!((u8::max_value() - 2).checked_add(3), None);

pub fn checked_sub(self, rhs: u8) -> Option<u8>

Checked integer subtraction. Computes self - rhs, returning None if overflow occurred.

Examples

Basic usage:

assert_eq!(1u8.checked_sub(1), Some(0));
assert_eq!(0u8.checked_sub(1), None);

pub fn checked_mul(self, rhs: u8) -> Option<u8>

Checked integer multiplication. Computes self * rhs, returning None if overflow occurred.

Examples

Basic usage:

assert_eq!(5u8.checked_mul(1), Some(5));
assert_eq!(u8::max_value().checked_mul(2), None);

pub fn checked_div(self, rhs: u8) -> Option<u8>

Checked integer division. Computes self / rhs, returning None if rhs == 0.

Examples

Basic usage:

assert_eq!(128u8.checked_div(2), Some(64));
assert_eq!(1u8.checked_div(0), None);

pub fn checked_div_euc(self, rhs: u8) -> Option<u8>

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Checked Euclidean division. Computes self.div_euc(rhs), returning None if rhs == 0.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(128u8.checked_div(2), Some(64));
assert_eq!(1u8.checked_div_euc(0), None);

pub fn checked_rem(self, rhs: u8) -> Option<u8>

Checked integer remainder. Computes self % rhs, returning None if rhs == 0.

Examples

Basic usage:

assert_eq!(5u8.checked_rem(2), Some(1));
assert_eq!(5u8.checked_rem(0), None);

pub fn checked_mod_euc(self, rhs: u8) -> Option<u8>

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Checked Euclidean modulo. Computes self.mod_euc(rhs), returning None if rhs == 0.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(5u8.checked_mod_euc(2), Some(1));
assert_eq!(5u8.checked_mod_euc(0), None);

pub fn checked_neg(self) -> Option<u8>

Checked negation. Computes -self, returning None unless self == 0.

Note that negating any positive integer will overflow.

Examples

Basic usage:

assert_eq!(0u8.checked_neg(), Some(0));
assert_eq!(1u8.checked_neg(), None);

pub fn checked_shl(self, rhs: u32) -> Option<u8>

Checked shift left. Computes self << rhs, returning None if rhs is larger than or equal to the number of bits in self.

Examples

Basic usage:

assert_eq!(0x1u8.checked_shl(4), Some(0x10));
assert_eq!(0x10u8.checked_shl(129), None);

pub fn checked_shr(self, rhs: u32) -> Option<u8>

Checked shift right. Computes self >> rhs, returning None if rhs is larger than or equal to the number of bits in self.

Examples

Basic usage:

assert_eq!(0x10u8.checked_shr(4), Some(0x1));
assert_eq!(0x10u8.checked_shr(129), None);

pub fn checked_pow(self, exp: u32) -> Option<u8>

🔬 This is a nightly-only experimental API. (no_panic_pow #48320)

Checked exponentiation. Computes self.pow(exp), returning None if overflow occurred.

Examples

Basic usage:

#![feature(no_panic_pow)]
assert_eq!(2u8.checked_pow(5), Some(32));
assert_eq!(u8::max_value().checked_pow(2), None);

pub fn saturating_add(self, rhs: u8) -> u8

Saturating integer addition. Computes self + rhs, saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

assert_eq!(100u8.saturating_add(1), 101);
assert_eq!(200u8.saturating_add(127), 255);

pub fn saturating_sub(self, rhs: u8) -> u8

Saturating integer subtraction. Computes self - rhs, saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

assert_eq!(100u8.saturating_sub(27), 73);
assert_eq!(13u8.saturating_sub(127), 0);

pub fn saturating_mul(self, rhs: u8) -> u8

Saturating integer multiplication. Computes self * rhs, saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

use std::u8;

assert_eq!(2u8.saturating_mul(10), 20);
assert_eq!((u8::MAX).saturating_mul(10), u8::MAX);

pub fn saturating_pow(self, exp: u32) -> u8

🔬 This is a nightly-only experimental API. (no_panic_pow #48320)

Saturating integer exponentiation. Computes self.pow(exp), saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

#![feature(no_panic_pow)]
use std::u8;

assert_eq!(4u8.saturating_pow(3), 64);
assert_eq!(u8::MAX.saturating_pow(2), u8::MAX);

pub fn wrapping_add(self, rhs: u8) -> u8

Wrapping (modular) addition. Computes self + rhs, wrapping around at the boundary of the type.

Examples

Basic usage:

assert_eq!(200u8.wrapping_add(55), 255);
assert_eq!(200u8.wrapping_add(u8::max_value()), 199);

pub fn wrapping_sub(self, rhs: u8) -> u8

Wrapping (modular) subtraction. Computes self - rhs, wrapping around at the boundary of the type.

Examples

Basic usage:

assert_eq!(100u8.wrapping_sub(100), 0);
assert_eq!(100u8.wrapping_sub(u8::max_value()), 101);

pub fn wrapping_mul(self, rhs: u8) -> u8

Wrapping (modular) multiplication. Computes self * rhs, wrapping around at the boundary of the type.

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why u8 is used here.

assert_eq!(10u8.wrapping_mul(12), 120);
assert_eq!(25u8.wrapping_mul(12), 44);

pub fn wrapping_div(self, rhs: u8) -> u8

Wrapping (modular) division. Computes self / rhs. Wrapped division on unsigned types is just normal division. There's no way wrapping could ever happen. This function exists, so that all operations are accounted for in the wrapping operations.

Examples

Basic usage:

assert_eq!(100u8.wrapping_div(10), 10);

pub fn wrapping_div_euc(self, rhs: u8) -> u8

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Wrapping Euclidean division. Computes self.div_euc(rhs). Wrapped division on unsigned types is just normal division. There's no way wrapping could ever happen. This function exists, so that all operations are accounted for in the wrapping operations.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(100u8.wrapping_div_euc(10), 10);

pub fn wrapping_rem(self, rhs: u8) -> u8

Wrapping (modular) remainder. Computes self % rhs. Wrapped remainder calculation on unsigned types is just the regular remainder calculation. There's no way wrapping could ever happen. This function exists, so that all operations are accounted for in the wrapping operations.

Examples

Basic usage:

assert_eq!(100u8.wrapping_rem(10), 0);

pub fn wrapping_mod_euc(self, rhs: u8) -> u8

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Wrapping Euclidean modulo. Computes self.mod_euc(rhs). Wrapped modulo calculation on unsigned types is just the regular remainder calculation. There's no way wrapping could ever happen. This function exists, so that all operations are accounted for in the wrapping operations.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(100u8.wrapping_mod_euc(10), 0);

pub fn wrapping_neg(self) -> u8

Wrapping (modular) negation. Computes -self, wrapping around at the boundary of the type.

Since unsigned types do not have negative equivalents all applications of this function will wrap (except for -0). For values smaller than the corresponding signed type's maximum the result is the same as casting the corresponding signed value. Any larger values are equivalent to MAX + 1 - (val - MAX - 1) where MAX is the corresponding signed type's maximum.

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why i8 is used here.

assert_eq!(100i8.wrapping_neg(), -100);
assert_eq!((-128i8).wrapping_neg(), -128);

pub fn wrapping_shl(self, rhs: u32) -> u8

Panic-free bitwise shift-left; yields self << mask(rhs), where mask removes any high-order bits of rhs that would cause the shift to exceed the bitwidth of the type.

Note that this is not the same as a rotate-left; the RHS of a wrapping shift-left is restricted to the range of the type, rather than the bits shifted out of the LHS being returned to the other end. The primitive integer types all implement a rotate_left function, which may be what you want instead.

Examples

Basic usage:

assert_eq!(1u8.wrapping_shl(7), 128);
assert_eq!(1u8.wrapping_shl(128), 1);

pub fn wrapping_shr(self, rhs: u32) -> u8

Panic-free bitwise shift-right; yields self >> mask(rhs), where mask removes any high-order bits of rhs that would cause the shift to exceed the bitwidth of the type.

Note that this is not the same as a rotate-right; the RHS of a wrapping shift-right is restricted to the range of the type, rather than the bits shifted out of the LHS being returned to the other end. The primitive integer types all implement a rotate_right function, which may be what you want instead.

Examples

Basic usage:

assert_eq!(128u8.wrapping_shr(7), 1);
assert_eq!(128u8.wrapping_shr(128), 128);

pub fn wrapping_pow(self, exp: u32) -> u8

🔬 This is a nightly-only experimental API. (no_panic_pow #48320)

Wrapping (modular) exponentiation. Computes self.pow(exp), wrapping around at the boundary of the type.

Examples

Basic usage:

#![feature(no_panic_pow)]
assert_eq!(3u8.wrapping_pow(5), 243);
assert_eq!(3u8.wrapping_pow(6), 217);

pub fn overflowing_add(self, rhs: u8) -> (u8, bool)

Calculates self + rhs

Returns a tuple of the addition along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

Basic usage

use std::u8;

assert_eq!(5u8.overflowing_add(2), (7, false));
assert_eq!(u8::MAX.overflowing_add(1), (0, true));

pub fn overflowing_sub(self, rhs: u8) -> (u8, bool)

Calculates self - rhs

Returns a tuple of the subtraction along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

Basic usage

use std::u8;

assert_eq!(5u8.overflowing_sub(2), (3, false));
assert_eq!(0u8.overflowing_sub(1), (u8::MAX, true));

pub fn overflowing_mul(self, rhs: u8) -> (u8, bool)

Calculates the multiplication of self and rhs.

Returns a tuple of the multiplication along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then the wrapped value is returned.

Examples

Basic usage:

Please note that this example is shared between integer types. Which explains why u32 is used here.

assert_eq!(5u32.overflowing_mul(2), (10, false));
assert_eq!(1_000_000_000u32.overflowing_mul(10), (1410065408, true));

pub fn overflowing_div(self, rhs: u8) -> (u8, bool)

Calculates the divisor when self is divided by rhs.

Returns a tuple of the divisor along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false.

Panics

This function will panic if rhs is 0.

Examples

Basic usage

assert_eq!(5u8.overflowing_div(2), (2, false));

pub fn overflowing_div_euc(self, rhs: u8) -> (u8, bool)

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Calculates the quotient of Euclidean division self.div_euc(rhs).

Returns a tuple of the divisor along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false.

Panics

This function will panic if rhs is 0.

Examples

Basic usage

#![feature(euclidean_division)]
assert_eq!(5u8.overflowing_div_euc(2), (2, false));

pub fn overflowing_rem(self, rhs: u8) -> (u8, bool)

Calculates the remainder when self is divided by rhs.

Returns a tuple of the remainder after dividing along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false.

Panics

This function will panic if rhs is 0.

Examples

Basic usage

assert_eq!(5u8.overflowing_rem(2), (1, false));

pub fn overflowing_mod_euc(self, rhs: u8) -> (u8, bool)

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Calculates the remainder self.mod_euc(rhs) by Euclidean division.

Returns a tuple of the modulo after dividing along with a boolean indicating whether an arithmetic overflow would occur. Note that for unsigned integers overflow never occurs, so the second value is always false.

Panics

This function will panic if rhs is 0.

Examples

Basic usage

#![feature(euclidean_division)]
assert_eq!(5u8.overflowing_mod_euc(2), (1, false));

pub fn overflowing_neg(self) -> (u8, bool)

Negates self in an overflowing fashion.

Returns !self + 1 using wrapping operations to return the value that represents the negation of this unsigned value. Note that for positive unsigned values overflow always occurs, but negating 0 does not overflow.

Examples

Basic usage

assert_eq!(0u8.overflowing_neg(), (0, false));
assert_eq!(2u8.overflowing_neg(), (-2i32 as u8, true));

pub fn overflowing_shl(self, rhs: u32) -> (u8, bool)

Shifts self left by rhs bits.

Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.

Examples

Basic usage

assert_eq!(0x1u8.overflowing_shl(4), (0x10, false));
assert_eq!(0x1u8.overflowing_shl(132), (0x10, true));

pub fn overflowing_shr(self, rhs: u32) -> (u8, bool)

Shifts self right by rhs bits.

Returns a tuple of the shifted version of self along with a boolean indicating whether the shift value was larger than or equal to the number of bits. If the shift value is too large, then value is masked (N-1) where N is the number of bits, and this value is then used to perform the shift.

Examples

Basic usage

assert_eq!(0x10u8.overflowing_shr(4), (0x1, false));
assert_eq!(0x10u8.overflowing_shr(132), (0x1, true));

pub fn overflowing_pow(self, exp: u32) -> (u8, bool)

🔬 This is a nightly-only experimental API. (no_panic_pow #48320)

Raises self to the power of exp, using exponentiation by squaring.

Returns a tuple of the exponentiation along with a bool indicating whether an overflow happened.

Examples

Basic usage:

#![feature(no_panic_pow)]
assert_eq!(3u8.overflowing_pow(5), (243, false));
assert_eq!(3u8.overflowing_pow(6), (217, true));

pub fn pow(self, exp: u32) -> u8

Raises self to the power of exp, using exponentiation by squaring.

Examples

Basic usage:

assert_eq!(2u8.pow(5), 32);

pub fn div_euc(self, rhs: u8) -> u8

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Performs Euclidean division.

For unsigned types, this is just the same as self / rhs.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(7u8.div_euc(4), 1); // or any other integer type

pub fn mod_euc(self, rhs: u8) -> u8

🔬 This is a nightly-only experimental API. (euclidean_division #49048)

Calculates the remainder self mod rhs by Euclidean division.

For unsigned types, this is just the same as self % rhs.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(7u8.mod_euc(4), 3); // or any other integer type

pub fn is_power_of_two(self) -> bool

Returns true if and only if self == 2^k for some k.

Examples

Basic usage:

assert!(16u8.is_power_of_two());
assert!(!10u8.is_power_of_two());

pub fn next_power_of_two(self) -> u8

Returns the smallest power of two greater than or equal to self.

When return value overflows (i.e. self > (1 << (N-1)) for type uN), it panics in debug mode and return value is wrapped to 0 in release mode (the only situation in which method can return 0).

Examples

Basic usage:

assert_eq!(2u8.next_power_of_two(), 2);
assert_eq!(3u8.next_power_of_two(), 4);

pub fn checked_next_power_of_two(self) -> Option<u8>

Returns the smallest power of two greater than or equal to n. If the next power of two is greater than the type's maximum value, None is returned, otherwise the power of two is wrapped in Some.

Examples

Basic usage:

assert_eq!(2u8.checked_next_power_of_two(), Some(2));
assert_eq!(3u8.checked_next_power_of_two(), Some(4));
assert_eq!(u8::max_value().checked_next_power_of_two(), None);

pub fn wrapping_next_power_of_two(self) -> u8

🔬 This is a nightly-only experimental API. (wrapping_next_power_of_two #32463)

needs decision on wrapping behaviour

Returns the smallest power of two greater than or equal to n. If the next power of two is greater than the type's maximum value, the return value is wrapped to 0.

Examples

Basic usage:

#![feature(wrapping_next_power_of_two)]

assert_eq!(2u8.wrapping_next_power_of_two(), 2);
assert_eq!(3u8.wrapping_next_power_of_two(), 4);
assert_eq!(u8::max_value().wrapping_next_power_of_two(), 0);

pub fn to_bytes(self) -> [u8; 1]

🔬 This is a nightly-only experimental API. (int_to_from_bytes #49792)

Return the memory representation of this integer as a byte array.

The target platform’s native endianness is used. Portable code likely wants to use this after to_be or to_le.

Examples

#![feature(int_to_from_bytes)]

let bytes = 0x1234_5678_u32.to_be().to_bytes();
assert_eq!(bytes, [0x12, 0x34, 0x56, 0x78]);

pub fn from_bytes(bytes: [u8; 1]) -> u8

🔬 This is a nightly-only experimental API. (int_to_from_bytes #49792)

Create an integer value from its memory representation as a byte array.

The target platform’s native endianness is used. Portable code likely wants to use to_be or to_le after this.

Examples

#![feature(int_to_from_bytes)]

let int = u32::from_be(u32::from_bytes([0x12, 0x34, 0x56, 0x78]));
assert_eq!(int, 0x1234_5678_u32);

pub fn is_ascii(&self) -> bool

Checks if the value is within the ASCII range.

Examples

let ascii = 97u8;
let non_ascii = 150u8;

assert!(ascii.is_ascii());
assert!(!non_ascii.is_ascii());

pub fn to_ascii_uppercase(&self) -> u8

Makes a copy of the value in its ASCII upper case equivalent.

ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', but non-ASCII letters are unchanged.

To uppercase the value in-place, use make_ascii_uppercase.

Examples

let lowercase_a = 97u8;

assert_eq!(65, lowercase_a.to_ascii_uppercase());

pub fn to_ascii_lowercase(&self) -> u8

Makes a copy of the value in its ASCII lower case equivalent.

ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', but non-ASCII letters are unchanged.

To lowercase the value in-place, use make_ascii_lowercase.

Examples

let uppercase_a = 65u8;

assert_eq!(97, uppercase_a.to_ascii_lowercase());

pub fn eq_ignore_ascii_case(&self, other: &u8) -> bool

Checks that two values are an ASCII case-insensitive match.

This is equivalent to to_ascii_lowercase(a) == to_ascii_lowercase(b).

Examples

let lowercase_a = 97u8;
let uppercase_a = 65u8;

assert!(lowercase_a.eq_ignore_ascii_case(&uppercase_a));

pub fn make_ascii_uppercase(&mut self)

Converts this value to its ASCII upper case equivalent in-place.

ASCII letters 'a' to 'z' are mapped to 'A' to 'Z', but non-ASCII letters are unchanged.

To return a new uppercased value without modifying the existing one, use to_ascii_uppercase.

Examples

let mut byte = b'a';

byte.make_ascii_uppercase();

assert_eq!(b'A', byte);

pub fn make_ascii_lowercase(&mut self)

Converts this value to its ASCII lower case equivalent in-place.

ASCII letters 'A' to 'Z' are mapped to 'a' to 'z', but non-ASCII letters are unchanged.

To return a new lowercased value without modifying the existing one, use to_ascii_lowercase.

Examples

let mut byte = b'A';

byte.make_ascii_lowercase();

assert_eq!(b'a', byte);

pub fn is_ascii_alphabetic(&self) -> bool

Checks if the value is an ASCII alphabetic character:

• U+0041 'A' ... U+005A 'Z', or
• U+0061 'a' ... U+007A 'z'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(uppercase_a.is_ascii_alphabetic());
assert!(uppercase_g.is_ascii_alphabetic());
assert!(a.is_ascii_alphabetic());
assert!(g.is_ascii_alphabetic());
assert!(!zero.is_ascii_alphabetic());
assert!(!percent.is_ascii_alphabetic());
assert!(!space.is_ascii_alphabetic());
assert!(!lf.is_ascii_alphabetic());
assert!(!esc.is_ascii_alphabetic());

pub fn is_ascii_uppercase(&self) -> bool

Checks if the value is an ASCII uppercase character: U+0041 'A' ... U+005A 'Z'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(uppercase_a.is_ascii_uppercase());
assert!(uppercase_g.is_ascii_uppercase());
assert!(!a.is_ascii_uppercase());
assert!(!g.is_ascii_uppercase());
assert!(!zero.is_ascii_uppercase());
assert!(!percent.is_ascii_uppercase());
assert!(!space.is_ascii_uppercase());
assert!(!lf.is_ascii_uppercase());
assert!(!esc.is_ascii_uppercase());

pub fn is_ascii_lowercase(&self) -> bool

Checks if the value is an ASCII lowercase character: U+0061 'a' ... U+007A 'z'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(!uppercase_a.is_ascii_lowercase());
assert!(!uppercase_g.is_ascii_lowercase());
assert!(a.is_ascii_lowercase());
assert!(g.is_ascii_lowercase());
assert!(!zero.is_ascii_lowercase());
assert!(!percent.is_ascii_lowercase());
assert!(!space.is_ascii_lowercase());
assert!(!lf.is_ascii_lowercase());
assert!(!esc.is_ascii_lowercase());

pub fn is_ascii_alphanumeric(&self) -> bool

Checks if the value is an ASCII alphanumeric character:

• U+0041 'A' ... U+005A 'Z', or
• U+0061 'a' ... U+007A 'z', or
• U+0030 '0' ... U+0039 '9'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(uppercase_a.is_ascii_alphanumeric());
assert!(uppercase_g.is_ascii_alphanumeric());
assert!(a.is_ascii_alphanumeric());
assert!(g.is_ascii_alphanumeric());
assert!(zero.is_ascii_alphanumeric());
assert!(!percent.is_ascii_alphanumeric());
assert!(!space.is_ascii_alphanumeric());
assert!(!lf.is_ascii_alphanumeric());
assert!(!esc.is_ascii_alphanumeric());

pub fn is_ascii_digit(&self) -> bool

Checks if the value is an ASCII decimal digit: U+0030 '0' ... U+0039 '9'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(!uppercase_a.is_ascii_digit());
assert!(!uppercase_g.is_ascii_digit());
assert!(!a.is_ascii_digit());
assert!(!g.is_ascii_digit());
assert!(zero.is_ascii_digit());
assert!(!percent.is_ascii_digit());
assert!(!space.is_ascii_digit());
assert!(!lf.is_ascii_digit());
assert!(!esc.is_ascii_digit());

pub fn is_ascii_hexdigit(&self) -> bool

Checks if the value is an ASCII hexadecimal digit:

• U+0030 '0' ... U+0039 '9', or
• U+0041 'A' ... U+0046 'F', or
• U+0061 'a' ... U+0066 'f'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(uppercase_a.is_ascii_hexdigit());
assert!(!uppercase_g.is_ascii_hexdigit());
assert!(a.is_ascii_hexdigit());
assert!(!g.is_ascii_hexdigit());
assert!(zero.is_ascii_hexdigit());
assert!(!percent.is_ascii_hexdigit());
assert!(!space.is_ascii_hexdigit());
assert!(!lf.is_ascii_hexdigit());
assert!(!esc.is_ascii_hexdigit());

pub fn is_ascii_punctuation(&self) -> bool

Checks if the value is an ASCII punctuation character:

• U+0021 ... U+002F ! " # $ % & ' ( ) * + , - . /, or
• U+003A ... U+0040 : ; < = > ? @, or
• U+005B ... U+0060 [ \ ] ^ _ `, or
• U+007B ... U+007E { | } ~

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(!uppercase_a.is_ascii_punctuation());
assert!(!uppercase_g.is_ascii_punctuation());
assert!(!a.is_ascii_punctuation());
assert!(!g.is_ascii_punctuation());
assert!(!zero.is_ascii_punctuation());
assert!(percent.is_ascii_punctuation());
assert!(!space.is_ascii_punctuation());
assert!(!lf.is_ascii_punctuation());
assert!(!esc.is_ascii_punctuation());

pub fn is_ascii_graphic(&self) -> bool

Checks if the value is an ASCII graphic character: U+0021 '!' ... U+007E '~'.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(uppercase_a.is_ascii_graphic());
assert!(uppercase_g.is_ascii_graphic());
assert!(a.is_ascii_graphic());
assert!(g.is_ascii_graphic());
assert!(zero.is_ascii_graphic());
assert!(percent.is_ascii_graphic());
assert!(!space.is_ascii_graphic());
assert!(!lf.is_ascii_graphic());
assert!(!esc.is_ascii_graphic());

pub fn is_ascii_whitespace(&self) -> bool

Checks if the value is an ASCII whitespace character: U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED, U+000C FORM FEED, or U+000D CARRIAGE RETURN.

Rust uses the WhatWG Infra Standard's definition of ASCII whitespace. There are several other definitions in wide use. For instance, the POSIX locale includes U+000B VERTICAL TAB as well as all the above characters, but—from the very same specification—the default rule for "field splitting" in the Bourne shell considers only SPACE, HORIZONTAL TAB, and LINE FEED as whitespace.

If you are writing a program that will process an existing file format, check what that format's definition of whitespace is before using this function.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(!uppercase_a.is_ascii_whitespace());
assert!(!uppercase_g.is_ascii_whitespace());
assert!(!a.is_ascii_whitespace());
assert!(!g.is_ascii_whitespace());
assert!(!zero.is_ascii_whitespace());
assert!(!percent.is_ascii_whitespace());
assert!(space.is_ascii_whitespace());
assert!(lf.is_ascii_whitespace());
assert!(!esc.is_ascii_whitespace());

pub fn is_ascii_control(&self) -> bool

Checks if the value is an ASCII control character: U+0000 NUL ... U+001F UNIT SEPARATOR, or U+007F DELETE. Note that most ASCII whitespace characters are control characters, but SPACE is not.

Examples

#![feature(ascii_ctype)]

let uppercase_a = b'A';
let uppercase_g = b'G';
let a = b'a';
let g = b'g';
let zero = b'0';
let percent = b'%';
let space = b' ';
let lf = b'\n';
let esc = 0x1b_u8;

assert!(!uppercase_a.is_ascii_control());
assert!(!uppercase_g.is_ascii_control());
assert!(!a.is_ascii_control());
assert!(!g.is_ascii_control());
assert!(!zero.is_ascii_control());
assert!(!percent.is_ascii_control());
assert!(!space.is_ascii_control());
assert!(lf.is_ascii_control());
assert!(esc.is_ascii_control());

Trait Implementations

impl<'a, 'b> Shl<&'a u64> for &'b u8

type Output = <u8 as Shl<u64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u64) -> <u8 as Shl<u64>>::Output

Performs the << operation.

impl Shl<isize> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: isize) -> u8

Performs the << operation.

impl<'a, 'b> Shl<&'a u128> for &'b u8

type Output = <u8 as Shl<u128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u128) -> <u8 as Shl<u128>>::Output

Performs the << operation.

impl Shl<u32> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u32) -> u8

Performs the << operation.

impl<'a> Shl<&'a u32> for u8

type Output = <u8 as Shl<u32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u32) -> <u8 as Shl<u32>>::Output

Performs the << operation.

impl Shl<usize> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: usize) -> u8

Performs the << operation.

impl<'a> Shl<&'a i128> for u8

type Output = <u8 as Shl<i128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i128) -> <u8 as Shl<i128>>::Output

Performs the << operation.

impl<'a> Shl<u16> for &'a u8

type Output = <u8 as Shl<u16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u16) -> <u8 as Shl<u16>>::Output

Performs the << operation.

impl Shl<u64> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u64) -> u8

Performs the << operation.

impl<'a> Shl<i128> for &'a u8

type Output = <u8 as Shl<i128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i128) -> <u8 as Shl<i128>>::Output

Performs the << operation.

impl<'a> Shl<usize> for &'a u8

type Output = <u8 as Shl<usize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: usize) -> <u8 as Shl<usize>>::Output

Performs the << operation.

impl<'a> Shl<i16> for &'a u8

type Output = <u8 as Shl<i16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i16) -> <u8 as Shl<i16>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a i32> for &'b u8

type Output = <u8 as Shl<i32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i32) -> <u8 as Shl<i32>>::Output

Performs the << operation.

impl<'a> Shl<&'a i16> for u8

type Output = <u8 as Shl<i16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i16) -> <u8 as Shl<i16>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a u16> for &'b u8

type Output = <u8 as Shl<u16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u16) -> <u8 as Shl<u16>>::Output

Performs the << operation.

impl<'a> Shl<u8> for &'a u8

type Output = <u8 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u8) -> <u8 as Shl<u8>>::Output

Performs the << operation.

impl Shl<i8> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i8) -> u8

Performs the << operation.

impl<'a, 'b> Shl<&'a i16> for &'b u8

type Output = <u8 as Shl<i16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i16) -> <u8 as Shl<i16>>::Output

Performs the << operation.

impl<'a> Shl<&'a u64> for u8

type Output = <u8 as Shl<u64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u64) -> <u8 as Shl<u64>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a i128> for &'b u8

type Output = <u8 as Shl<i128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i128) -> <u8 as Shl<i128>>::Output

Performs the << operation.

impl<'a> Shl<&'a isize> for u8

type Output = <u8 as Shl<isize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a isize) -> <u8 as Shl<isize>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a i8> for &'b u8

type Output = <u8 as Shl<i8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i8) -> <u8 as Shl<i8>>::Output

Performs the << operation.

impl<'a> Shl<isize> for &'a u8

type Output = <u8 as Shl<isize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: isize) -> <u8 as Shl<isize>>::Output

Performs the << operation.

impl<'a> Shl<&'a u16> for u8

type Output = <u8 as Shl<u16>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u16) -> <u8 as Shl<u16>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a isize> for &'b u8

type Output = <u8 as Shl<isize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a isize) -> <u8 as Shl<isize>>::Output

Performs the << operation.

impl<'a> Shl<i8> for &'a u8

type Output = <u8 as Shl<i8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i8) -> <u8 as Shl<i8>>::Output

Performs the << operation.

impl<'a> Shl<i32> for &'a u8

type Output = <u8 as Shl<i32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i32) -> <u8 as Shl<i32>>::Output

Performs the << operation.

impl<'a> Shl<&'a u8> for u8

type Output = <u8 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u8) -> <u8 as Shl<u8>>::Output

Performs the << operation.

impl<'a> Shl<u64> for &'a u8

type Output = <u8 as Shl<u64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u64) -> <u8 as Shl<u64>>::Output

Performs the << operation.

impl Shl<i32> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i32) -> u8

Performs the << operation.

impl Shl<u128> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u128) -> u8

Performs the << operation.

impl<'a> Shl<u128> for &'a u8

type Output = <u8 as Shl<u128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u128) -> <u8 as Shl<u128>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a u32> for &'b u8

type Output = <u8 as Shl<u32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u32) -> <u8 as Shl<u32>>::Output

Performs the << operation.

impl Shl<u16> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u16) -> u8

Performs the << operation.

impl Shl<i128> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i128) -> u8

Performs the << operation.

impl<'a> Shl<&'a i32> for u8

type Output = <u8 as Shl<i32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i32) -> <u8 as Shl<i32>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a usize> for &'b u8

type Output = <u8 as Shl<usize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a usize) -> <u8 as Shl<usize>>::Output

Performs the << operation.

impl<'a> Shl<i64> for &'a u8

type Output = <u8 as Shl<i64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: i64) -> <u8 as Shl<i64>>::Output

Performs the << operation.

impl<'a> Shl<&'a i8> for u8

type Output = <u8 as Shl<i8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i8) -> <u8 as Shl<i8>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a u8> for &'b u8

type Output = <u8 as Shl<u8>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u8) -> <u8 as Shl<u8>>::Output

Performs the << operation.

impl<'a> Shl<&'a i64> for u8

type Output = <u8 as Shl<i64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i64) -> <u8 as Shl<i64>>::Output

Performs the << operation.

impl Shl<i16> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i16) -> u8

Performs the << operation.

impl Shl<u8> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: u8) -> u8

Performs the << operation.

impl Shl<i64> for u8

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i64) -> u8

Performs the << operation.

impl<'a> Shl<u32> for &'a u8

type Output = <u8 as Shl<u32>>::Output

The resulting type after applying the << operator.

fn shl(self, other: u32) -> <u8 as Shl<u32>>::Output

Performs the << operation.

impl<'a> Shl<&'a usize> for u8

type Output = <u8 as Shl<usize>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a usize) -> <u8 as Shl<usize>>::Output

Performs the << operation.

impl<'a, 'b> Shl<&'a i64> for &'b u8

type Output = <u8 as Shl<i64>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a i64) -> <u8 as Shl<i64>>::Output

Performs the << operation.

impl<'a> Shl<&'a u128> for u8

type Output = <u8 as Shl<u128>>::Output

The resulting type after applying the << operator.

fn shl(self, other: &'a u128) -> <u8 as Shl<u128>>::Output

Performs the << operation.

impl BitAnd<u8x8> for u8

type Output = u8x8

The resulting type after applying the & operator.

fn bitand(self, other: u8x8) -> u8x8

Performs the & operation.

impl<'a> BitAnd<u8> for &'a u8

type Output = <u8 as BitAnd<u8>>::Output

The resulting type after applying the & operator.

fn bitand(self, other: u8) -> <u8 as BitAnd<u8>>::Output

Performs the & operation.

impl BitAnd<u8x2> for u8

type Output = u8x2

The resulting type after applying the & operator.

fn bitand(self, other: u8x2) -> u8x2

Performs the & operation.

impl<'a> BitAnd<&'a u8> for u8

type Output = <u8 as BitAnd<u8>>::Output

The resulting type after applying the & operator.

fn bitand(self, other: &'a u8) -> <u8 as BitAnd<u8>>::Output

Performs the & operation.

impl BitAnd<u8x4> for u8

type Output = u8x4

The resulting type after applying the & operator.

fn bitand(self, other: u8x4) -> u8x4

Performs the & operation.

impl<'a, 'b> BitAnd<&'a u8> for &'b u8

type Output = <u8 as BitAnd<u8>>::Output

The resulting type after applying the & operator.

fn bitand(self, other: &'a u8) -> <u8 as BitAnd<u8>>::Output

Performs the & operation.

impl BitAnd<u8x64> for u8

type Output = u8x64

The resulting type after applying the & operator.

fn bitand(self, other: u8x64) -> u8x64

Performs the & operation.

impl BitAnd<u8x16> for u8

type Output = u8x16

The resulting type after applying the & operator.

fn bitand(self, other: u8x16) -> u8x16

Performs the & operation.

impl BitAnd<u8> for u8

type Output = u8

The resulting type after applying the & operator.

fn bitand(self, rhs: u8) -> u8

Performs the & operation.

impl BitAnd<u8x32> for u8

type Output = u8x32

The resulting type after applying the & operator.

fn bitand(self, other: u8x32) -> u8x32

Performs the & operation.

impl FromStr for u8

type Err = ParseIntError

The associated error which can be returned from parsing.

fn from_str(src: &str) -> Result<u8, ParseIntError>

Parses a string s to return a value of this type.

impl TryFrom<i8> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: i8) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<usize> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: usize) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<i128> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: i128) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<u128> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: u128) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<i64> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: i64) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<u64> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: u64) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<u32> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: u32) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<isize> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: isize) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<i16> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: i16) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<u16> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: u16) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl TryFrom<i32> for u8

type Error = TryFromIntError

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

fn try_from(u: i32) -> Result<u8, TryFromIntError>

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl Binary for u8

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl Debug for u8

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<'a> Product<&'a u8> for u8

fn product<I>(iter: I) -> u8 where     I: Iterator<Item = &'a u8>,

Method which takes an iterator and generates Self from the elements by multiplying the items.

impl Product<u8> for u8

fn product<I>(iter: I) -> u8 where     I: Iterator<Item = u8>,

Method which takes an iterator and generates Self from the elements by multiplying the items.

impl Default for u8

fn default() -> u8

Returns the default value of 0

impl<'a> ShlAssign<&'a i32> for u8

fn shl_assign(&mut self, other: &'a i32)

Performs the <<= operation.

impl<'a> ShlAssign<&'a i8> for u8

fn shl_assign(&mut self, other: &'a i8)

Performs the <<= operation.

impl ShlAssign<i32> for u8

fn shl_assign(&mut self, other: i32)

Performs the <<= operation.

impl ShlAssign<i128> for u8

fn shl_assign(&mut self, other: i128)

Performs the <<= operation.

impl<'a> ShlAssign<&'a i16> for u8

fn shl_assign(&mut self, other: &'a i16)

Performs the <<= operation.

impl<'a> ShlAssign<&'a isize> for u8

fn shl_assign(&mut self, other: &'a isize)

Performs the <<= operation.

impl ShlAssign<u64> for u8

fn shl_assign(&mut self, other: u64)

Performs the <<= operation.

impl ShlAssign<i8> for u8

fn shl_assign(&mut self, other: i8)

Performs the <<= operation.

impl<'a> ShlAssign<&'a u64> for u8

fn shl_assign(&mut self, other: &'a u64)

Performs the <<= operation.

impl<'a> ShlAssign<&'a usize> for u8

fn shl_assign(&mut self, other: &'a usize)

Performs the <<= operation.

impl<'a> ShlAssign<&'a u128> for u8

fn shl_assign(&mut self, other: &'a u128)

Performs the <<= operation.

impl ShlAssign<u128> for u8

fn shl_assign(&mut self, other: u128)

Performs the <<= operation.

impl ShlAssign<i64> for u8

fn shl_assign(&mut self, other: i64)

Performs the <<= operation.

impl<'a> ShlAssign<&'a u8> for u8

fn shl_assign(&mut self, other: &'a u8)

Performs the <<= operation.

impl ShlAssign<usize> for u8

fn shl_assign(&mut self, other: usize)

Performs the <<= operation.

impl ShlAssign<isize> for u8

fn shl_assign(&mut self, other: isize)

Performs the <<= operation.

impl<'a> ShlAssign<&'a u16> for u8

fn shl_assign(&mut self, other: &'a u16)

Performs the <<= operation.

impl ShlAssign<u32> for u8

fn shl_assign(&mut self, other: u32)

Performs the <<= operation.

impl<'a> ShlAssign<&'a i128> for u8

fn shl_assign(&mut self, other: &'a i128)

Performs the <<= operation.

impl ShlAssign<u16> for u8

fn shl_assign(&mut self, other: u16)

Performs the <<= operation.

impl<'a> ShlAssign<&'a u32> for u8

fn shl_assign(&mut self, other: &'a u32)

Performs the <<= operation.

impl ShlAssign<u8> for u8

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

impl ShlAssign<i16> for u8

fn shl_assign(&mut self, other: i16)

Performs the <<= operation.

impl<'a> ShlAssign<&'a i64> for u8

fn shl_assign(&mut self, other: &'a i64)

Performs the <<= operation.

impl Div<u8> for u8

This operation rounds towards zero, truncating any fractional part of the exact result.

type Output = u8

The resulting type after applying the / operator.

fn div(self, other: u8) -> u8

Performs the / operation.

impl Div<u8x32> for u8

type Output = u8x32

The resulting type after applying the / operator.

fn div(self, other: u8x32) -> u8x32

Performs the / operation.

impl<'a> Div<u8> for &'a u8

type Output = <u8 as Div<u8>>::Output

The resulting type after applying the / operator.

fn div(self, other: u8) -> <u8 as Div<u8>>::Output

Performs the / operation.

impl Div<u8x2> for u8

type Output = u8x2

The resulting type after applying the / operator.

fn div(self, other: u8x2) -> u8x2

Performs the / operation.

impl<'a, 'b> Div<&'a u8> for &'b u8

type Output = <u8 as Div<u8>>::Output

The resulting type after applying the / operator.

fn div(self, other: &'a u8) -> <u8 as Div<u8>>::Output

Performs the / operation.

impl Div<u8x8> for u8

type Output = u8x8

The resulting type after applying the / operator.

fn div(self, other: u8x8) -> u8x8

Performs the / operation.

impl<'a> Div<&'a u8> for u8

type Output = <u8 as Div<u8>>::Output

The resulting type after applying the / operator.

fn div(self, other: &'a u8) -> <u8 as Div<u8>>::Output

Performs the / operation.

impl Div<u8x4> for u8

type Output = u8x4

The resulting type after applying the / operator.

fn div(self, other: u8x4) -> u8x4

Performs the / operation.

impl Div<u8x16> for u8

type Output = u8x16

The resulting type after applying the / operator.

fn div(self, other: u8x16) -> u8x16

Performs the / operation.

impl Div<u8x64> for u8

type Output = u8x64

The resulting type after applying the / operator.

fn div(self, other: u8x64) -> u8x64

Performs the / operation.

impl<'a> BitXorAssign<&'a u8> for u8

fn bitxor_assign(&mut self, other: &'a u8)

Performs the ^= operation.

impl BitXorAssign<u8> for u8

fn bitxor_assign(&mut self, other: u8)

Performs the ^= operation.

impl BitOrAssign<u8> for u8

fn bitor_assign(&mut self, other: u8)

Performs the |= operation.

impl<'a> BitOrAssign<&'a u8> for u8

fn bitor_assign(&mut self, other: &'a u8)

Performs the |= operation.

impl<'a> BitAndAssign<&'a u8> for u8

fn bitand_assign(&mut self, other: &'a u8)

Performs the &= operation.

impl BitAndAssign<u8> for u8

fn bitand_assign(&mut self, other: u8)

Performs the &= operation.

impl Step for u8

fn steps_between(start: &u8, end: &u8) -> Option<usize>

🔬 This is a nightly-only experimental API. (step_trait #42168)

likely to be replaced by finer-grained traits

Returns the number of steps between two step objects. The count is inclusive of start and exclusive of end.

fn add_usize(&self, n: usize) -> Option<u8>

🔬 This is a nightly-only experimental API. (step_trait #42168)

likely to be replaced by finer-grained traits

Add an usize, returning None on overflow

fn replace_one(&mut self) -> u8

🔬 This is a nightly-only experimental API. (step_trait #42168)

likely to be replaced by finer-grained traits

Replaces this step with 1, returning itself

fn replace_zero(&mut self) -> u8

🔬 This is a nightly-only experimental API. (step_trait #42168)

likely to be replaced by finer-grained traits

Replaces this step with 0, returning itself

fn add_one(&self) -> u8

🔬 This is a nightly-only experimental API. (step_trait #42168)

likely to be replaced by finer-grained traits

Adds one to this step, returning the result

fn sub_one(&self) -> u8

🔬 This is a nightly-only experimental API. (step_trait #42168)

likely to be replaced by finer-grained traits

Subtracts one to this step, returning the result

impl<'a, 'b> Add<&'a u8> for &'b u8

type Output = <u8 as Add<u8>>::Output

The resulting type after applying the + operator.

fn add(self, other: &'a u8) -> <u8 as Add<u8>>::Output

Performs the + operation.

impl Add<u8x32> for u8

type Output = u8x32

The resulting type after applying the + operator.

fn add(self, other: u8x32) -> u8x32

Performs the + operation.

impl<'a> Add<u8> for &'a u8

type Output = <u8 as Add<u8>>::Output

The resulting type after applying the + operator.

fn add(self, other: u8) -> <u8 as Add<u8>>::Output

Performs the + operation.

impl Add<u8x8> for u8

type Output = u8x8

The resulting type after applying the + operator.

fn add(self, other: u8x8) -> u8x8

Performs the + operation.

impl Add<u8x64> for u8

type Output = u8x64

The resulting type after applying the + operator.

fn add(self, other: u8x64) -> u8x64

Performs the + operation.

impl Add<u8x16> for u8

type Output = u8x16

The resulting type after applying the + operator.

fn add(self, other: u8x16) -> u8x16

Performs the + operation.

impl Add<u8x2> for u8

type Output = u8x2

The resulting type after applying the + operator.

fn add(self, other: u8x2) -> u8x2

Performs the + operation.

impl<'a> Add<&'a u8> for u8

type Output = <u8 as Add<u8>>::Output

The resulting type after applying the + operator.

fn add(self, other: &'a u8) -> <u8 as Add<u8>>::Output

Performs the + operation.

impl Add<u8x4> for u8

type Output = u8x4

The resulting type after applying the + operator.

fn add(self, other: u8x4) -> u8x4

Performs the + operation.

impl Add<u8> for u8

type Output = u8

The resulting type after applying the + operator.

fn add(self, other: u8) -> u8

Performs the + operation.

impl BitOr<u8x16> for u8

type Output = u8x16

The resulting type after applying the | operator.

fn bitor(self, other: u8x16) -> u8x16

Performs the | operation.

impl BitOr<u8x64> for u8

type Output = u8x64

The resulting type after applying the | operator.

fn bitor(self, other: u8x64) -> u8x64

Performs the | operation.

impl<'a> BitOr<u8> for &'a u8

type Output = <u8 as BitOr<u8>>::Output

The resulting type after applying the | operator.

fn bitor(self, other: u8) -> <u8 as BitOr<u8>>::Output

Performs the | operation.

impl<'a> BitOr<&'a u8> for u8

type Output = <u8 as BitOr<u8>>::Output

The resulting type after applying the | operator.

fn bitor(self, other: &'a u8) -> <u8 as BitOr<u8>>::Output

Performs the | operation.

impl BitOr<u8x4> for u8

type Output = u8x4

The resulting type after applying the | operator.

fn bitor(self, other: u8x4) -> u8x4

Performs the | operation.

impl BitOr<u8x32> for u8

type Output = u8x32

The resulting type after applying the | operator.

fn bitor(self, other: u8x32) -> u8x32

Performs the | operation.

impl BitOr<u8x2> for u8

type Output = u8x2

The resulting type after applying the | operator.

fn bitor(self, other: u8x2) -> u8x2

Performs the | operation.

impl<'a, 'b> BitOr<&'a u8> for &'b u8

type Output = <u8 as BitOr<u8>>::Output

The resulting type after applying the | operator.

fn bitor(self, other: &'a u8) -> <u8 as BitOr<u8>>::Output

Performs the | operation.

impl BitOr<u8x8> for u8

type Output = u8x8

The resulting type after applying the | operator.

fn bitor(self, other: u8x8) -> u8x8

Performs the | operation.

impl BitOr<u8> for u8

type Output = u8

The resulting type after applying the | operator.

fn bitor(self, rhs: u8) -> u8

Performs the | operation.

impl<'a> RemAssign<&'a u8> for u8

fn rem_assign(&mut self, other: &'a u8)

Performs the %= operation.

impl RemAssign<u8> for u8

fn rem_assign(&mut self, other: u8)

Performs the %= operation.

impl Copy for u8

impl DivAssign<u8> for u8

fn div_assign(&mut self, other: u8)

Performs the /= operation.

impl<'a> DivAssign<&'a u8> for u8

fn div_assign(&mut self, other: &'a u8)

Performs the /= operation.

impl MulAssign<u8> for u8

fn mul_assign(&mut self, other: u8)

Performs the *= operation.

impl<'a> MulAssign<&'a u8> for u8

fn mul_assign(&mut self, other: &'a u8)

Performs the *= operation.

impl UpperHex for u8

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<'a> SubAssign<&'a u8> for u8

fn sub_assign(&mut self, other: &'a u8)

Performs the -= operation.

impl SubAssign<u8> for u8

fn sub_assign(&mut self, other: u8)

Performs the -= operation.

impl Octal for u8

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl From<bool> for u8

Converts a bool to a u8. The resulting value is 0 for false and 1 for true values.

Examples

assert_eq!(u8::from(true), 1);
assert_eq!(u8::from(false), 0);

fn from(small: bool) -> u8

Performs the conversion.

impl<'a> AddAssign<&'a u8> for u8

fn add_assign(&mut self, other: &'a u8)

Performs the += operation.

impl AddAssign<u8> for u8

fn add_assign(&mut self, other: u8)

Performs the += operation.

impl ShrAssign<i8> for u8

fn shr_assign(&mut self, other: i8)

Performs the >>= operation.

impl ShrAssign<u16> for u8

fn shr_assign(&mut self, other: u16)

Performs the >>= operation.

impl ShrAssign<isize> for u8

fn shr_assign(&mut self, other: isize)

Performs the >>= operation.

impl ShrAssign<i128> for u8

fn shr_assign(&mut self, other: i128)

Performs the >>= operation.

impl ShrAssign<i64> for u8

fn shr_assign(&mut self, other: i64)

Performs the >>= operation.

impl ShrAssign<u64> for u8

fn shr_assign(&mut self, other: u64)

Performs the >>= operation.

impl<'a> ShrAssign<&'a i8> for u8

fn shr_assign(&mut self, other: &'a i8)

Performs the >>= operation.

impl<'a> ShrAssign<&'a u128> for u8

fn shr_assign(&mut self, other: &'a u128)

Performs the >>= operation.

impl<'a> ShrAssign<&'a i16> for u8

fn shr_assign(&mut self, other: &'a i16)

Performs the >>= operation.

impl<'a> ShrAssign<&'a u8> for u8

fn shr_assign(&mut self, other: &'a u8)

Performs the >>= operation.

impl ShrAssign<i16> for u8

fn shr_assign(&mut self, other: i16)

Performs the >>= operation.

impl ShrAssign<u8> for u8

fn shr_assign(&mut self, other: u8)

Performs the >>= operation.

impl<'a> ShrAssign<&'a i64> for u8

fn shr_assign(&mut self, other: &'a i64)

Performs the >>= operation.

impl<'a> ShrAssign<&'a u64> for u8

fn shr_assign(&mut self, other: &'a u64)

Performs the >>= operation.

impl<'a> ShrAssign<&'a usize> for u8

fn shr_assign(&mut self, other: &'a usize)

Performs the >>= operation.

impl<'a> ShrAssign<&'a u16> for u8

fn shr_assign(&mut self, other: &'a u16)

Performs the >>= operation.

impl ShrAssign<u32> for u8

fn shr_assign(&mut self, other: u32)

Performs the >>= operation.

impl<'a> ShrAssign<&'a isize> for u8

fn shr_assign(&mut self, other: &'a isize)

Performs the >>= operation.

impl<'a> ShrAssign<&'a i128> for u8

fn shr_assign(&mut self, other: &'a i128)

Performs the >>= operation.

impl ShrAssign<usize> for u8

fn shr_assign(&mut self, other: usize)

Performs the >>= operation.

impl<'a> ShrAssign<&'a u32> for u8

fn shr_assign(&mut self, other: &'a u32)

Performs the >>= operation.

impl ShrAssign<u128> for u8

fn shr_assign(&mut self, other: u128)

Performs the >>= operation.

impl<'a> ShrAssign<&'a i32> for u8

fn shr_assign(&mut self, other: &'a i32)

Performs the >>= operation.

impl ShrAssign<i32> for u8

fn shr_assign(&mut self, other: i32)

Performs the >>= operation.

impl Sum<u8> for u8

fn sum<I>(iter: I) -> u8 where     I: Iterator<Item = u8>,

Method which takes an iterator and generates Self from the elements by "summing up" the items.

impl<'a> Sum<&'a u8> for u8

fn sum<I>(iter: I) -> u8 where     I: Iterator<Item = &'a u8>,

Method which takes an iterator and generates Self from the elements by "summing up" the items.

impl Sub<u8x64> for u8

type Output = u8x64

The resulting type after applying the - operator.

fn sub(self, other: u8x64) -> u8x64

Performs the - operation.

impl Sub<u8x4> for u8

type Output = u8x4

The resulting type after applying the - operator.

fn sub(self, other: u8x4) -> u8x4

Performs the - operation.

impl Sub<u8x2> for u8

type Output = u8x2

The resulting type after applying the - operator.

fn sub(self, other: u8x2) -> u8x2

Performs the - operation.

impl Sub<u8x16> for u8

type Output = u8x16

The resulting type after applying the - operator.

fn sub(self, other: u8x16) -> u8x16

Performs the - operation.

impl<'a> Sub<u8> for &'a u8

type Output = <u8 as Sub<u8>>::Output

The resulting type after applying the - operator.

fn sub(self, other: u8) -> <u8 as Sub<u8>>::Output

Performs the - operation.

impl Sub<u8x32> for u8

type Output = u8x32

The resulting type after applying the - operator.

fn sub(self, other: u8x32) -> u8x32

Performs the - operation.

impl<'a> Sub<&'a u8> for u8

type Output = <u8 as Sub<u8>>::Output

The resulting type after applying the - operator.

fn sub(self, other: &'a u8) -> <u8 as Sub<u8>>::Output

Performs the - operation.

impl<'a, 'b> Sub<&'a u8> for &'b u8

type Output = <u8 as Sub<u8>>::Output

The resulting type after applying the - operator.

fn sub(self, other: &'a u8) -> <u8 as Sub<u8>>::Output

Performs the - operation.

impl Sub<u8> for u8

type Output = u8

The resulting type after applying the - operator.

fn sub(self, other: u8) -> u8

Performs the - operation.

impl Sub<u8x8> for u8

type Output = u8x8

The resulting type after applying the - operator.

fn sub(self, other: u8x8) -> u8x8

Performs the - operation.

impl<'a> Shr<&'a i128> for u8

type Output = <u8 as Shr<i128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i128) -> <u8 as Shr<i128>>::Output

Performs the >> operation.

impl<'a> Shr<&'a u64> for u8

type Output = <u8 as Shr<u64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u64) -> <u8 as Shr<u64>>::Output

Performs the >> operation.

impl Shr<i64> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i64) -> u8

Performs the >> operation.

impl<'a> Shr<usize> for &'a u8

type Output = <u8 as Shr<usize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: usize) -> <u8 as Shr<usize>>::Output

Performs the >> operation.

impl<'a> Shr<i128> for &'a u8

type Output = <u8 as Shr<i128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i128) -> <u8 as Shr<i128>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a i16> for &'b u8

type Output = <u8 as Shr<i16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i16) -> <u8 as Shr<i16>>::Output

Performs the >> operation.

impl<'a> Shr<u128> for &'a u8

type Output = <u8 as Shr<u128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u128) -> <u8 as Shr<u128>>::Output

Performs the >> operation.

impl Shr<usize> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: usize) -> u8

Performs the >> operation.

impl<'a> Shr<u8> for &'a u8

type Output = <u8 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> <u8 as Shr<u8>>::Output

Performs the >> operation.

impl<'a> Shr<&'a i16> for u8

type Output = <u8 as Shr<i16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i16) -> <u8 as Shr<i16>>::Output

Performs the >> operation.

impl Shr<u16> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u16) -> u8

Performs the >> operation.

impl<'a, 'b> Shr<&'a u16> for &'b u8

type Output = <u8 as Shr<u16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u16) -> <u8 as Shr<u16>>::Output

Performs the >> operation.

impl<'a> Shr<u16> for &'a u8

type Output = <u8 as Shr<u16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u16) -> <u8 as Shr<u16>>::Output

Performs the >> operation.

impl<'a> Shr<&'a i8> for u8

type Output = <u8 as Shr<i8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i8) -> <u8 as Shr<i8>>::Output

Performs the >> operation.

impl<'a> Shr<&'a i32> for u8

type Output = <u8 as Shr<i32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i32) -> <u8 as Shr<i32>>::Output

Performs the >> operation.

impl<'a> Shr<isize> for &'a u8

type Output = <u8 as Shr<isize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: isize) -> <u8 as Shr<isize>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a u128> for &'b u8

type Output = <u8 as Shr<u128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u128) -> <u8 as Shr<u128>>::Output

Performs the >> operation.

impl<'a> Shr<&'a isize> for u8

type Output = <u8 as Shr<isize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a isize) -> <u8 as Shr<isize>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a u8> for &'b u8

type Output = <u8 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u8) -> <u8 as Shr<u8>>::Output

Performs the >> operation.

impl Shr<u128> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u128) -> u8

Performs the >> operation.

impl Shr<u8> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> u8

Performs the >> operation.

impl<'a> Shr<u32> for &'a u8

type Output = <u8 as Shr<u32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u32) -> <u8 as Shr<u32>>::Output

Performs the >> operation.

impl<'a> Shr<i32> for &'a u8

type Output = <u8 as Shr<i32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i32) -> <u8 as Shr<i32>>::Output

Performs the >> operation.

impl Shr<i128> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i128) -> u8

Performs the >> operation.

impl Shr<u64> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u64) -> u8

Performs the >> operation.

impl Shr<i32> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i32) -> u8

Performs the >> operation.

impl<'a> Shr<&'a u128> for u8

type Output = <u8 as Shr<u128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u128) -> <u8 as Shr<u128>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a i64> for &'b u8

type Output = <u8 as Shr<i64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i64) -> <u8 as Shr<i64>>::Output

Performs the >> operation.

impl<'a> Shr<i64> for &'a u8

type Output = <u8 as Shr<i64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i64) -> <u8 as Shr<i64>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a i32> for &'b u8

type Output = <u8 as Shr<i32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i32) -> <u8 as Shr<i32>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a isize> for &'b u8

type Output = <u8 as Shr<isize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a isize) -> <u8 as Shr<isize>>::Output

Performs the >> operation.

impl<'a> Shr<i16> for &'a u8

type Output = <u8 as Shr<i16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i16) -> <u8 as Shr<i16>>::Output

Performs the >> operation.

impl Shr<u32> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u32) -> u8

Performs the >> operation.

impl<'a> Shr<&'a u32> for u8

type Output = <u8 as Shr<u32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u32) -> <u8 as Shr<u32>>::Output

Performs the >> operation.

impl Shr<isize> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: isize) -> u8

Performs the >> operation.

impl<'a> Shr<&'a u16> for u8

type Output = <u8 as Shr<u16>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u16) -> <u8 as Shr<u16>>::Output

Performs the >> operation.

impl<'a> Shr<i8> for &'a u8

type Output = <u8 as Shr<i8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: i8) -> <u8 as Shr<i8>>::Output

Performs the >> operation.

impl Shr<i16> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i16) -> u8

Performs the >> operation.

impl<'a, 'b> Shr<&'a usize> for &'b u8

type Output = <u8 as Shr<usize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a usize) -> <u8 as Shr<usize>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a i8> for &'b u8

type Output = <u8 as Shr<i8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i8) -> <u8 as Shr<i8>>::Output

Performs the >> operation.

impl<'a> Shr<&'a usize> for u8

type Output = <u8 as Shr<usize>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a usize) -> <u8 as Shr<usize>>::Output

Performs the >> operation.

impl<'a> Shr<u64> for &'a u8

type Output = <u8 as Shr<u64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: u64) -> <u8 as Shr<u64>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a i128> for &'b u8

type Output = <u8 as Shr<i128>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i128) -> <u8 as Shr<i128>>::Output

Performs the >> operation.

impl<'a> Shr<&'a i64> for u8

type Output = <u8 as Shr<i64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a i64) -> <u8 as Shr<i64>>::Output

Performs the >> operation.

impl<'a> Shr<&'a u8> for u8

type Output = <u8 as Shr<u8>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u8) -> <u8 as Shr<u8>>::Output

Performs the >> operation.

impl<'a, 'b> Shr<&'a u32> for &'b u8

type Output = <u8 as Shr<u32>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u32) -> <u8 as Shr<u32>>::Output

Performs the >> operation.

impl Shr<i8> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: i8) -> u8

Performs the >> operation.

impl<'a, 'b> Shr<&'a u64> for &'b u8

type Output = <u8 as Shr<u64>>::Output

The resulting type after applying the >> operator.

fn shr(self, other: &'a u64) -> <u8 as Shr<u64>>::Output

Performs the >> operation.

impl Clone for u8

fn clone(&self) -> u8

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialOrd<u8> for u8

fn partial_cmp(&self, other: &u8) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &u8) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &u8) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn ge(&self, other: &u8) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

fn gt(&self, other: &u8) -> bool

This method tests greater than (for self and other) and is used by the > operator.

impl<'a> BitXor<&'a u8> for u8

type Output = <u8 as BitXor<u8>>::Output

The resulting type after applying the ^ operator.

fn bitxor(self, other: &'a u8) -> <u8 as BitXor<u8>>::Output

Performs the ^ operation.

impl<'a, 'b> BitXor<&'a u8> for &'b u8

type Output = <u8 as BitXor<u8>>::Output

The resulting type after applying the ^ operator.

fn bitxor(self, other: &'a u8) -> <u8 as BitXor<u8>>::Output

Performs the ^ operation.

impl BitXor<u8x8> for u8

type Output = u8x8

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8x8) -> u8x8

Performs the ^ operation.

impl BitXor<u8x2> for u8

type Output = u8x2

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8x2) -> u8x2

Performs the ^ operation.

impl BitXor<u8x64> for u8

type Output = u8x64

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8x64) -> u8x64

Performs the ^ operation.

impl BitXor<u8x16> for u8

type Output = u8x16

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8x16) -> u8x16

Performs the ^ operation.

impl BitXor<u8x4> for u8

type Output = u8x4

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8x4) -> u8x4

Performs the ^ operation.

impl<'a> BitXor<u8> for &'a u8

type Output = <u8 as BitXor<u8>>::Output

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8) -> <u8 as BitXor<u8>>::Output

Performs the ^ operation.

impl BitXor<u8> for u8

type Output = u8

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8) -> u8

Performs the ^ operation.

impl BitXor<u8x32> for u8

type Output = u8x32

The resulting type after applying the ^ operator.

fn bitxor(self, other: u8x32) -> u8x32

Performs the ^ operation.

impl Ord for u8

fn cmp(&self, other: &u8) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl Not for u8

type Output = u8

The resulting type after applying the ! operator.

fn not(self) -> u8

Performs the unary ! operation.

impl<'a> Not for &'a u8

type Output = <u8 as Not>::Output

The resulting type after applying the ! operator.

fn not(self) -> <u8 as Not>::Output

Performs the unary ! operation.

impl Eq for u8

impl PartialEq<u8> for u8

fn eq(&self, other: &u8) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &u8) -> bool

This method tests for !=.

impl LowerHex for u8

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for u8

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl Rem<u8x32> for u8

type Output = u8x32

The resulting type after applying the % operator.

fn rem(self, other: u8x32) -> u8x32

Performs the % operation.

impl Rem<u8x8> for u8

type Output = u8x8

The resulting type after applying the % operator.

fn rem(self, other: u8x8) -> u8x8

Performs the % operation.

impl<'a, 'b> Rem<&'a u8> for &'b u8

type Output = <u8 as Rem<u8>>::Output

The resulting type after applying the % operator.

fn rem(self, other: &'a u8) -> <u8 as Rem<u8>>::Output

Performs the % operation.

impl<'a> Rem<&'a u8> for u8

type Output = <u8 as Rem<u8>>::Output

The resulting type after applying the % operator.

fn rem(self, other: &'a u8) -> <u8 as Rem<u8>>::Output

Performs the % operation.

impl Rem<u8> for u8

This operation satisfies n % d == n - (n / d) * d. The result has the same sign as the left operand.

type Output = u8

The resulting type after applying the % operator.

fn rem(self, other: u8) -> u8

Performs the % operation.

impl Rem<u8x64> for u8

type Output = u8x64

The resulting type after applying the % operator.

fn rem(self, other: u8x64) -> u8x64

Performs the % operation.

impl Rem<u8x16> for u8

type Output = u8x16

The resulting type after applying the % operator.

fn rem(self, other: u8x16) -> u8x16

Performs the % operation.

impl Rem<u8x2> for u8

type Output = u8x2

The resulting type after applying the % operator.

fn rem(self, other: u8x2) -> u8x2

Performs the % operation.

impl Rem<u8x4> for u8

type Output = u8x4

The resulting type after applying the % operator.

fn rem(self, other: u8x4) -> u8x4

Performs the % operation.

impl<'a> Rem<u8> for &'a u8

type Output = <u8 as Rem<u8>>::Output

The resulting type after applying the % operator.

fn rem(self, other: u8) -> <u8 as Rem<u8>>::Output

Performs the % operation.

impl Mul<u8x32> for u8

type Output = u8x32

The resulting type after applying the * operator.

fn mul(self, other: u8x32) -> u8x32

Performs the * operation.

impl Mul<u8> for u8

type Output = u8

The resulting type after applying the * operator.

fn mul(self, other: u8) -> u8

Performs the * operation.

impl Mul<u8x4> for u8

type Output = u8x4

The resulting type after applying the * operator.

fn mul(self, other: u8x4) -> u8x4

Performs the * operation.

impl Mul<u8x2> for u8

type Output = u8x2

The resulting type after applying the * operator.

fn mul(self, other: u8x2) -> u8x2

Performs the * operation.

impl<'a> Mul<&'a u8> for u8

type Output = <u8 as Mul<u8>>::Output

The resulting type after applying the * operator.

fn mul(self, other: &'a u8) -> <u8 as Mul<u8>>::Output

Performs the * operation.

impl<'a> Mul<u8> for &'a u8

type Output = <u8 as Mul<u8>>::Output

The resulting type after applying the * operator.

fn mul(self, other: u8) -> <u8 as Mul<u8>>::Output

Performs the * operation.

impl Mul<u8x64> for u8

type Output = u8x64

The resulting type after applying the * operator.

fn mul(self, other: u8x64) -> u8x64

Performs the * operation.

impl<'a, 'b> Mul<&'a u8> for &'b u8

type Output = <u8 as Mul<u8>>::Output

The resulting type after applying the * operator.

fn mul(self, other: &'a u8) -> <u8 as Mul<u8>>::Output

Performs the * operation.

impl Mul<u8x8> for u8

type Output = u8x8

The resulting type after applying the * operator.

fn mul(self, other: u8x8) -> u8x8

Performs the * operation.

impl Mul<u8x16> for u8

type Output = u8x16

The resulting type after applying the * operator.

fn mul(self, other: u8x16) -> u8x16

Performs the * operation.

impl Hash for u8

fn hash<H>(&self, state: &mut H) where     H: Hasher,

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[u8], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl AsciiExt for u8

type Owned = u8

Deprecated since 1.26.0

: use inherent methods instead

Container type for copied ASCII characters.

fn is_ascii(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

Checks if the value is within the ASCII range.

fn to_ascii_uppercase(&self) -> Self::Owned

Deprecated since 1.26.0

: use inherent methods instead

Makes a copy of the value in its ASCII upper case equivalent.

fn to_ascii_lowercase(&self) -> Self::Owned

Deprecated since 1.26.0

: use inherent methods instead

Makes a copy of the value in its ASCII lower case equivalent.

fn eq_ignore_ascii_case(&self, o: &Self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

Checks that two values are an ASCII case-insensitive match.

fn make_ascii_uppercase(&mut self)

Deprecated since 1.26.0

: use inherent methods instead

Converts this type to its ASCII upper case equivalent in-place.

fn make_ascii_lowercase(&mut self)

Deprecated since 1.26.0

: use inherent methods instead

Converts this type to its ASCII lower case equivalent in-place.

fn is_ascii_alphabetic(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII alphabetic character: U+0041 'A' ... U+005A 'Z' or U+0061 'a' ... U+007A 'z'. For strings, true if all characters in the string are ASCII alphabetic.

fn is_ascii_uppercase(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII uppercase character: U+0041 'A' ... U+005A 'Z'. For strings, true if all characters in the string are ASCII uppercase.

fn is_ascii_lowercase(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII lowercase character: U+0061 'a' ... U+007A 'z'. For strings, true if all characters in the string are ASCII lowercase.

fn is_ascii_alphanumeric(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII alphanumeric character: U+0041 'A' ... U+005A 'Z', U+0061 'a' ... U+007A 'z', or U+0030 '0' ... U+0039 '9'. For strings, true if all characters in the string are ASCII alphanumeric.

fn is_ascii_digit(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII decimal digit: U+0030 '0' ... U+0039 '9'. For strings, true if all characters in the string are ASCII digits.

fn is_ascii_hexdigit(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII hexadecimal digit: U+0030 '0' ... U+0039 '9', U+0041 'A' ... U+0046 'F', or U+0061 'a' ... U+0066 'f'. For strings, true if all characters in the string are ASCII hex digits.

fn is_ascii_punctuation(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII punctuation character:

fn is_ascii_graphic(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII graphic character: U+0021 '!' ... U+007E '~'. For strings, true if all characters in the string are ASCII graphic characters.

fn is_ascii_whitespace(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII whitespace character: U+0020 SPACE, U+0009 HORIZONTAL TAB, U+000A LINE FEED, U+000C FORM FEED, or U+000D CARRIAGE RETURN. For strings, true if all characters in the string are ASCII whitespace.

fn is_ascii_control(&self) -> bool

Deprecated since 1.26.0

: use inherent methods instead

🔬 This is a nightly-only experimental API. (ascii_ctype #39658)

Checks if the value is an ASCII control character: U+0000 NUL ... U+001F UNIT SEPARATOR, or U+007F DELETE. Note that most ASCII whitespace characters are control characters, but SPACE is not.