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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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 the << shifting operator!

Examples

Basic usage:

let n = 0x82u8;
let m = 0xa;

assert_eq!(n.rotate_left(2), m);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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 the >> shifting operator!

Examples

Basic usage:

let n = 0xau8;
let m = 0x82;

assert_eq!(n.rotate_right(2), m);

pub const fn swap_bytes(self) -> u8

Reverses the byte order of the integer.

Examples

Basic usage:

let n = 0x12u8;
let m = n.swap_bytes();

assert_eq!(m, 0x12);

#[must_use] pub const fn reverse_bits(self) -> u8

Reverses the bit pattern of the integer.

Examples

Basic usage:

let n = 0x12u8;
let m = n.reverse_bits();

assert_eq!(m, 0x48);

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())
}

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn checked_div_euclid(self, rhs: u8) -> Option<u8>

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

Examples

Basic usage:

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

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn checked_rem_euclid(self, rhs: u8) -> Option<u8>

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

Examples

Basic usage:

assert_eq!(5u8.checked_rem_euclid(2), Some(1));
assert_eq!(5u8.checked_rem_euclid(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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn checked_pow(self, exp: u32) -> Option<u8>

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

Examples

Basic usage:

assert_eq!(2u8.checked_pow(5), Some(32));
assert_eq!(u8::max_value().checked_pow(2), None);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn saturating_pow(self, exp: u32) -> u8

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

Examples

Basic usage:

use std::u8;

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

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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);

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn wrapping_div_euclid(self, rhs: u8) -> u8

Wrapping Euclidean division. Computes self.div_euclid(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. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.wrapping_div(rhs).

Examples

Basic usage:

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

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn wrapping_rem_euclid(self, rhs: u8) -> u8

Wrapping Euclidean modulo. Computes self.rem_euclid(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. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.wrapping_rem(rhs).

Examples

Basic usage:

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

pub const 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn wrapping_pow(self, exp: u32) -> u8

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

Examples

Basic usage:

assert_eq!(3u8.wrapping_pow(5), 243);
assert_eq!(3u8.wrapping_pow(6), 217);

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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));

#[must_use = "this returns the result of the operation, without modifying the original"] 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn overflowing_div_euclid(self, rhs: u8) -> (u8, bool)

Calculates the quotient of Euclidean division self.div_euclid(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. Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self.overflowing_div(rhs).

Panics

This function will panic if rhs is 0.

Examples

Basic usage

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

#[must_use = "this returns the result of the operation, without modifying the original"] 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn overflowing_rem_euclid(self, rhs: u8) -> (u8, bool)

Calculates the remainder self.rem_euclid(rhs) as if 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. Since, for the positive integers, all common definitions of division are equal, this operation is exactly equal to self.overflowing_rem(rhs).

Panics

This function will panic if rhs is 0.

Examples

Basic usage

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

pub const 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub const 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));

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn overflowing_pow(self, exp: u32) -> (u8, bool)

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:

assert_eq!(3u8.overflowing_pow(5), (243, false));
assert_eq!(3u8.overflowing_pow(6), (217, true));

#[must_use = "this returns the result of the operation, without modifying the original"] 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);

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn div_euclid(self, rhs: u8) -> u8

Performs Euclidean division.

Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self / rhs.

Examples

Basic usage:

assert_eq!(7u8.div_euclid(4), 1); // or any other integer type

#[must_use = "this returns the result of the operation, without modifying the original"] pub fn rem_euclid(self, rhs: u8) -> u8

Calculates the least remainder of self (mod rhs).

Since, for the positive integers, all common definitions of division are equal, this is exactly equal to self % rhs.

Examples

Basic usage:

assert_eq!(7u8.rem_euclid(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_be_bytes(self) -> [u8; 1]

Return the memory representation of this integer as a byte array in big-endian (network) byte order.

Examples

let bytes = 0x12u8.to_be_bytes();
assert_eq!(bytes, [0x12]);

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

Return the memory representation of this integer as a byte array in little-endian byte order.

Examples

let bytes = 0x12u8.to_le_bytes();
assert_eq!(bytes, [0x12]);

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

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

As the target platform's native endianness is used, portable code should use to_be_bytes or to_le_bytes, as appropriate, instead.

Examples

let bytes = 0x12u8.to_ne_bytes();
assert_eq!(bytes, if cfg!(target_endian = "big") {
        [0x12]
    } else {
        [0x12]
    });

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

Create an integer value from its representation as a byte array in big endian.

Examples

let value = u8::from_be_bytes([0x12]);
assert_eq!(value, 0x12);

When starting from a slice rather than an array, fallible conversion APIs can be used:

use std::convert::TryInto;

fn read_be_u8(input: &mut &[u8]) -> u8 {
    let (int_bytes, rest) = input.split_at(std::mem::size_of::<u8>());
    *input = rest;
    u8::from_be_bytes(int_bytes.try_into().unwrap())
}

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

Create an integer value from its representation as a byte array in little endian.

Examples

let value = u8::from_le_bytes([0x12]);
assert_eq!(value, 0x12);

When starting from a slice rather than an array, fallible conversion APIs can be used:

use std::convert::TryInto;

fn read_le_u8(input: &mut &[u8]) -> u8 {
    let (int_bytes, rest) = input.split_at(std::mem::size_of::<u8>());
    *input = rest;
    u8::from_le_bytes(int_bytes.try_into().unwrap())
}

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

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

As the target platform's native endianness is used, portable code likely wants to use from_be_bytes or from_le_bytes, as appropriate instead.

Examples

let value = u8::from_ne_bytes(if cfg!(target_endian = "big") {
        [0x12]
    } else {
        [0x12]
    });
assert_eq!(value, 0x12);

When starting from a slice rather than an array, fallible conversion APIs can be used:

use std::convert::TryInto;

fn read_ne_u8(input: &mut &[u8]) -> u8 {
    let (int_bytes, rest) = input.split_at(std::mem::size_of::<u8>());
    *input = rest;
    u8::from_ne_bytes(int_bytes.try_into().unwrap())
}

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

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

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

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

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

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

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

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

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

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

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<'_> BitOr<&'_ u8> for 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 BitOr<u8> for u8

type Output = u8

The resulting type after applying the | operator.

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

Performs the | operation.

impl<'_, '_> BitOr<&'_ u8> for &'_ 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<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 DivAssign<u8> for u8

fn div_assign(&mut self, other: u8)

Performs the /= operation.

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

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

Performs the /= operation.

impl AddAssign<u8> for u8

fn add_assign(&mut self, other: u8)

Performs the += operation.

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

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

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<'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<'_, '_> Rem<&'_ u8> for &'_ 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<'_> Rem<&'_ u8> for 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<'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<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<&'_ u8> for 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<&'_ u8> for &'_ 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 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<'_> BitAnd<&'_ u8> for 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<&'_ u8> for &'_ 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<u8> for u8

type Output = u8

The resulting type after applying the & operator.

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

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 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 BitOrAssign<u8> for u8

fn bitor_assign(&mut self, other: u8)

Performs the |= operation.

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

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

Performs the |= operation.

impl<'_, '_> Mul<&'_ u8> for &'_ 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<'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<u8> for u8

type Output = u8

The resulting type after applying the * operator.

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

Performs the * operation.

impl<'_> Mul<&'_ u8> for 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 Eq for u8

impl Debug for u8

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

Formats the value using the given formatter.

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

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

Performs the *= operation.

impl MulAssign<u8> for u8

fn mul_assign(&mut self, other: u8)

Performs the *= operation.

impl ShrAssign<u64> for u8

fn shr_assign(&mut self, other: u64)

Performs the >>= operation.

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

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

Performs the >>= operation.

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

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

Performs the >>= operation.

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

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

Performs the >>= operation.

impl ShrAssign<i16> for u8

fn shr_assign(&mut self, other: i16)

Performs the >>= operation.

impl ShrAssign<i128> for u8

fn shr_assign(&mut self, other: i128)

Performs the >>= operation.

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

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

Performs the >>= operation.

impl ShrAssign<i32> for u8

fn shr_assign(&mut self, other: i32)

Performs the >>= operation.

impl ShrAssign<u128> for u8

fn shr_assign(&mut self, other: u128)

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<&'_ u8> for u8

fn shr_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<&'_ u32> for u8

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

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 ShrAssign<usize> for u8

fn shr_assign(&mut self, other: usize)

Performs the >>= operation.

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

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

Performs the >>= operation.

impl ShrAssign<u32> for u8

fn shr_assign(&mut self, other: u32)

Performs the >>= operation.

impl ShrAssign<i64> for u8

fn shr_assign(&mut self, other: i64)

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 UpperHex for u8

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

Formats the value using the given formatter.

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

Adds a usize, returning None on overflow.

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

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

likely to be replaced by finer-grained traits

Subtracts a usize, returning None on underflow.

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> 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<&'_ u8> for &'_ 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<u8> for u8

type Output = u8

The resulting type after applying the - operator.

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

Performs the - operation.

impl<'_> Sub<&'_ u8> for 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<'_> Not for &'_ 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 Not for u8

type Output = u8

The resulting type after applying the ! operator.

fn not(self) -> u8

Performs the unary ! operation.

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 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 Octal for u8

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

Formats the value using the given formatter.

impl ShlAssign<u8> for u8

fn shl_assign(&mut self, other: u8)

Performs the <<= operation.

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

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

Performs the <<= operation.

impl ShlAssign<i64> for u8

fn shl_assign(&mut self, other: i64)

Performs the <<= operation.

impl ShlAssign<usize> for u8

fn shl_assign(&mut self, other: usize)

Performs the <<= operation.

impl ShlAssign<u32> for u8

fn shl_assign(&mut self, other: u32)

Performs the <<= operation.

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

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

Performs the <<= operation.

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

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

Performs the <<= operation.

impl ShlAssign<u128> for u8

fn shl_assign(&mut self, other: u128)

Performs the <<= operation.

impl ShlAssign<i8> for u8

fn shl_assign(&mut self, other: i8)

Performs the <<= operation.

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

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

Performs the <<= operation.

impl ShlAssign<i32> for u8

fn shl_assign(&mut self, other: i32)

Performs the <<= operation.

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

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

Performs the <<= operation.

impl ShlAssign<u64> for u8

fn shl_assign(&mut self, other: u64)

Performs the <<= operation.

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

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

Performs the <<= operation.

impl ShlAssign<i16> for u8

fn shl_assign(&mut self, other: i16)

Performs the <<= operation.

impl ShlAssign<i128> for u8

fn shl_assign(&mut self, other: i128)

Performs the <<= operation.

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

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

Performs the <<= operation.

impl ShlAssign<isize> for u8

fn shl_assign(&mut self, other: isize)

Performs the <<= operation.

impl ShlAssign<u16> for u8

fn shl_assign(&mut self, other: u16)

Performs the <<= operation.

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

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

Performs the <<= operation.

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

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

Performs the <<= operation.

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

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

Performs the <<= operation.

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

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

Performs the <<= operation.

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

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

Performs the <<= operation.

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<'_> BitAndAssign<&'_ u8> for u8

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

Performs the &= operation.

impl BitAndAssign<u8> for u8

fn bitand_assign(&mut self, other: u8)

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<'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<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<'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<'_, '_> Shl<&'_ i128> for &'_ 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<'_, '_> Shl<&'_ isize> for &'_ 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<'_> Shl<&'_ usize> for 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<'_> Shl<&'_ u64> for 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<&'_ i16> for &'_ 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 Shl<i8> for u8

type Output = u8

The resulting type after applying the << operator.

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

Performs the << operation.

impl<'_, '_> Shl<&'_ usize> for &'_ 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<'_> Shl<&'_ isize> for 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 Shl<i128> for u8

type Output = u8

The resulting type after applying the << operator.

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

Performs the << operation.

impl<'_, '_> Shl<&'_ i8> for &'_ 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<'_, '_> Shl<&'_ u64> for &'_ 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<'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<'_> Shl<&'_ i64> for 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 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> 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<'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<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<'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<'_> Shl<&'_ i8> for 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 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<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<'_> Shl<&'_ i128> for 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 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<u64> for u8

type Output = u8

The resulting type after applying the << operator.

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

Performs the << operation.

impl<'_, '_> Shl<&'_ u16> for &'_ 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<&'_ u128> for &'_ 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<'_> Shl<&'_ i16> for 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> 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 Shl<i64> for u8

type Output = u8

The resulting type after applying the << operator.

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

Performs the << operation.

impl<'_, '_> Shl<&'_ u8> for &'_ 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<&'_ u8> for 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<&'_ u16> for 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<&'_ u128> for 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<'_, '_> Shl<&'_ i64> for &'_ 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<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<'_> Shl<&'_ i32> for 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<'_> Shl<&'_ u32> for 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 Shl<usize> for u8

type Output = u8

The resulting type after applying the << operator.

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

type Output = u8

The resulting type after applying the << operator.

fn shl(self, other: i16) -> 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 Shl<u16> for u8

type Output = u8

The resulting type after applying the << operator.

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

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<'_, '_> Shl<&'_ u32> for &'_ 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<'_, '_> Shl<&'_ i32> for &'_ 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<'_, '_> Shr<&'_ u8> for &'_ 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<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<'_, '_> Shr<&'_ u64> for &'_ 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<'_> Shr<&'_ i16> for 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<'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<'_> Shr<&'_ usize> for 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 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<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<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<'_> Shr<&'_ isize> for 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> 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<&'_ i32> for 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<'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<&'_ u32> for &'_ 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<'_> Shr<&'_ i128> for 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 Shr<u8> for u8

type Output = u8

The resulting type after applying the >> operator.

fn shr(self, other: u8) -> 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<'_, '_> Shr<&'_ u16> for &'_ 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<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 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<i8> for u8

type Output = u8

The resulting type after applying the >> operator.

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

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<'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<'_> Shr<&'_ i64> for 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<'_> Shr<&'_ i8> for 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<&'_ u16> for 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<'_, '_> Shr<&'_ u128> for &'_ 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<u32> for u8

type Output = u8

The resulting type after applying the >> operator.

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

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<'_, '_> Shr<&'_ isize> for &'_ 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 Shr<u16> for u8

type Output = u8

The resulting type after applying the >> operator.

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

Performs the >> operation.

impl<'_, '_> Shr<&'_ i128> for &'_ 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 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<&'_ usize> for &'_ 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<'_, '_> Shr<&'_ i64> for &'_ 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<'_> Shr<&'_ u32> for 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<'_> Shr<&'_ u128> for 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<i16> for u8

type Output = u8

The resulting type after applying the >> operator.

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

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<'_, '_> Shr<&'_ i32> for &'_ 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<&'_ i8> for &'_ 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<&'_ u8> for 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 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<usize> for u8

type Output = u8

The resulting type after applying the >> operator.

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

Performs the >> operation.

impl<'_> Shr<&'_ u64> for 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> 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> 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<'_> Add<&'_ u8> for 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<'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<u8> for u8

type Output = u8

The resulting type after applying the + operator.

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

Performs the + operation.

impl<'_, '_> Add<&'_ u8> for &'_ 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<'_> RemAssign<&'_ u8> for u8

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

Performs the %= operation.

impl RemAssign<u8> for u8

fn rem_assign(&mut self, other: u8)

Performs the %= operation.

impl SubAssign<u8> for u8

fn sub_assign(&mut self, other: u8)

Performs the -= operation.

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

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

Performs the -= operation.

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 From<NonZeroU8> for u8

fn from(nonzero: NonZeroU8) -> u8

Performs the conversion.

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.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp #44095)

Restrict a value to a certain interval.

impl<'_> BitXor<&'_ u8> for 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<'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 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 Binary for u8

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

Formats the value using the given formatter.

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 TryFrom<usize> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<isize> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<i32> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<i16> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<u64> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<i8> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<i64> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<u16> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<i128> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<u128> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

impl TryFrom<u32> for u8

type Error = TryFromIntError

The type returned in the event of a conversion error.

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

Try to create the target number type from a source number type. This returns an error if the source value is outside of the range of the target type.

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<'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 BitXorAssign<u8> for u8

fn bitxor_assign(&mut self, other: u8)

Performs the ^= operation.

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

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

Performs the ^= operation.

impl Default for u8

fn default() -> u8

Returns the default value of 0

impl Copy for u8

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.