Primitive Type usize

The pointer-sized unsigned integer type.

See also the std::usize module.

Methods

impl usize

const fn min_value() -> usize

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

const fn max_value() -> usize

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

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

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

Leading and trailing whitespace represent an error.

Examples

Basic usage:

fn main() { assert_eq!(u32::from_str_radix("A", 16), Ok(10)); }

assert_eq!(u32::from_str_radix("A", 16), Ok(10));

fn count_ones(self) -> u32

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

Examples

Basic usage:

fn main() { let n = 0b01001100u8; assert_eq!(n.count_ones(), 3); }

let n = 0b01001100u8;

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

fn count_zeros(self) -> u32

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

Examples

Basic usage:

fn main() { let n = 0b01001100u8; assert_eq!(n.count_zeros(), 5); }

let n = 0b01001100u8;

assert_eq!(n.count_zeros(), 5);

fn leading_zeros(self) -> u32

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

Examples

Basic usage:

fn main() { let n = 0b0101000u16; assert_eq!(n.leading_zeros(), 10); }

let n = 0b0101000u16;

assert_eq!(n.leading_zeros(), 10);

fn trailing_zeros(self) -> u32

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

Examples

Basic usage:

fn main() { let n = 0b0101000u16; assert_eq!(n.trailing_zeros(), 3); }

let n = 0b0101000u16;

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

fn rotate_left(self, n: u32) -> usize

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

Examples

Basic usage:

fn main() { let n = 0x0123456789ABCDEFu64; let m = 0x3456789ABCDEF012u64; assert_eq!(n.rotate_left(12), m); }

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

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

fn rotate_right(self, n: u32) -> usize

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

Examples

Basic usage:

fn main() { let n = 0x0123456789ABCDEFu64; let m = 0xDEF0123456789ABCu64; assert_eq!(n.rotate_right(12), m); }

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

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

fn swap_bytes(self) -> usize

Reverses the byte order of the integer.

Examples

Basic usage:

fn main() { let n = 0x0123456789ABCDEFu64; let m = 0xEFCDAB8967452301u64; assert_eq!(n.swap_bytes(), m); }

let n = 0x0123456789ABCDEFu64;
let m = 0xEFCDAB8967452301u64;

assert_eq!(n.swap_bytes(), m);

fn from_be(x: usize) -> usize

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:

fn main() { let n = 0x0123456789ABCDEFu64; if cfg!(target_endian = "big") { assert_eq!(u64::from_be(n), n) } else { assert_eq!(u64::from_be(n), n.swap_bytes()) } }

let n = 0x0123456789ABCDEFu64;

if cfg!(target_endian = "big") {
    assert_eq!(u64::from_be(n), n)
} else {
    assert_eq!(u64::from_be(n), n.swap_bytes())
}

fn from_le(x: usize) -> usize

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:

fn main() { let n = 0x0123456789ABCDEFu64; if cfg!(target_endian = "little") { assert_eq!(u64::from_le(n), n) } else { assert_eq!(u64::from_le(n), n.swap_bytes()) } }

let n = 0x0123456789ABCDEFu64;

if cfg!(target_endian = "little") {
    assert_eq!(u64::from_le(n), n)
} else {
    assert_eq!(u64::from_le(n), n.swap_bytes())
}

fn to_be(self) -> usize

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:

fn main() { let n = 0x0123456789ABCDEFu64; if cfg!(target_endian = "big") { assert_eq!(n.to_be(), n) } else { assert_eq!(n.to_be(), n.swap_bytes()) } }

let n = 0x0123456789ABCDEFu64;

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

fn to_le(self) -> usize

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:

fn main() { let n = 0x0123456789ABCDEFu64; if cfg!(target_endian = "little") { assert_eq!(n.to_le(), n) } else { assert_eq!(n.to_le(), n.swap_bytes()) } }

let n = 0x0123456789ABCDEFu64;

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

fn checked_add(self, other: usize) -> Option<usize>

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

Examples

Basic usage:

fn main() { assert_eq!(5u16.checked_add(65530), Some(65535)); assert_eq!(6u16.checked_add(65530), None); }

assert_eq!(5u16.checked_add(65530), Some(65535));
assert_eq!(6u16.checked_add(65530), None);

fn checked_sub(self, other: usize) -> Option<usize>

Checked integer subtraction. Computes self - other, returning None if underflow occurred.

Examples

Basic usage:

fn main() { assert_eq!(1u8.checked_sub(1), Some(0)); assert_eq!(0u8.checked_sub(1), None); }

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

fn checked_mul(self, other: usize) -> Option<usize>

Checked integer multiplication. Computes self * other, returning None if underflow or overflow occurred.

Examples

Basic usage:

fn main() { assert_eq!(5u8.checked_mul(51), Some(255)); assert_eq!(5u8.checked_mul(52), None); }

assert_eq!(5u8.checked_mul(51), Some(255));
assert_eq!(5u8.checked_mul(52), None);

fn checked_div(self, other: usize) -> Option<usize>

Checked integer division. Computes self / other, returning None if other == 0 or the operation results in underflow or overflow.

Examples

Basic usage:

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

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

fn checked_rem(self, other: usize) -> Option<usize>

Checked integer remainder. Computes self % other, returning None if other == 0 or the operation results in underflow or overflow.

Examples

Basic usage:

fn main() { assert_eq!(5u32.checked_rem(2), Some(1)); assert_eq!(5u32.checked_rem(0), None); }

assert_eq!(5u32.checked_rem(2), Some(1));
assert_eq!(5u32.checked_rem(0), None);

fn checked_neg(self) -> Option<usize>

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

Note that negating any positive integer will overflow.

Examples

Basic usage:

fn main() { assert_eq!(0u32.checked_neg(), Some(0)); assert_eq!(1u32.checked_neg(), None); }

assert_eq!(0u32.checked_neg(), Some(0));
assert_eq!(1u32.checked_neg(), None);

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

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:

fn main() { assert_eq!(0x10u32.checked_shl(4), Some(0x100)); assert_eq!(0x10u32.checked_shl(33), None); }

assert_eq!(0x10u32.checked_shl(4), Some(0x100));
assert_eq!(0x10u32.checked_shl(33), None);

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

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:

fn main() { assert_eq!(0x10u32.checked_shr(4), Some(0x1)); assert_eq!(0x10u32.checked_shr(33), None); }

assert_eq!(0x10u32.checked_shr(4), Some(0x1));
assert_eq!(0x10u32.checked_shr(33), None);

fn saturating_add(self, other: usize) -> usize

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

Examples

Basic usage:

fn main() { assert_eq!(100u8.saturating_add(1), 101); assert_eq!(200u8.saturating_add(127), 255); }

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

fn saturating_sub(self, other: usize) -> usize

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

Examples

Basic usage:

fn main() { assert_eq!(100u8.saturating_sub(27), 73); assert_eq!(13u8.saturating_sub(127), 0); }

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

fn saturating_mul(self, other: usize) -> usize

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

Examples

Basic usage:

fn main() { use std::u32; assert_eq!(100u32.saturating_mul(127), 12700); assert_eq!((1u32 << 23).saturating_mul(1 << 23), u32::MAX); }

use std::u32;

assert_eq!(100u32.saturating_mul(127), 12700);
assert_eq!((1u32 << 23).saturating_mul(1 << 23), u32::MAX);

fn wrapping_add(self, rhs: usize) -> usize

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

Examples

Basic usage:

fn main() { assert_eq!(200u8.wrapping_add(55), 255); assert_eq!(200u8.wrapping_add(155), 99); }

assert_eq!(200u8.wrapping_add(55), 255);
assert_eq!(200u8.wrapping_add(155), 99);

fn wrapping_sub(self, rhs: usize) -> usize

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

Examples

Basic usage:

fn main() { assert_eq!(100u8.wrapping_sub(100), 0); assert_eq!(100u8.wrapping_sub(155), 201); }

assert_eq!(100u8.wrapping_sub(100), 0);
assert_eq!(100u8.wrapping_sub(155), 201);

fn wrapping_mul(self, rhs: usize) -> usize

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

Examples

Basic usage:

fn main() { assert_eq!(10u8.wrapping_mul(12), 120); assert_eq!(25u8.wrapping_mul(12), 44); }

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

fn wrapping_div(self, rhs: usize) -> usize

Wrapping (modular) division. Computes self / other. 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:

fn main() { assert_eq!(100u8.wrapping_div(10), 10); }

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

fn wrapping_rem(self, rhs: usize) -> usize

Wrapping (modular) remainder. Computes self % other. 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:

fn main() { assert_eq!(100u8.wrapping_rem(10), 0); }

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

fn wrapping_neg(self) -> usize

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:

fn main() { assert_eq!(100u8.wrapping_neg(), 156); assert_eq!(0u8.wrapping_neg(), 0); assert_eq!(180u8.wrapping_neg(), 76); assert_eq!(180u8.wrapping_neg(), (127 + 1) - (180u8 - (127 + 1))); }

assert_eq!(100u8.wrapping_neg(), 156);
assert_eq!(0u8.wrapping_neg(), 0);
assert_eq!(180u8.wrapping_neg(), 76);
assert_eq!(180u8.wrapping_neg(), (127 + 1) - (180u8 - (127 + 1)));

fn wrapping_shl(self, rhs: u32) -> usize

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:

fn main() { assert_eq!(1u8.wrapping_shl(7), 128); assert_eq!(1u8.wrapping_shl(8), 1); }

assert_eq!(1u8.wrapping_shl(7), 128);
assert_eq!(1u8.wrapping_shl(8), 1);

fn wrapping_shr(self, rhs: u32) -> usize

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:

fn main() { assert_eq!(128u8.wrapping_shr(7), 1); assert_eq!(128u8.wrapping_shr(8), 128); }

assert_eq!(128u8.wrapping_shr(7), 1);
assert_eq!(128u8.wrapping_shr(8), 128);

fn overflowing_add(self, rhs: usize) -> (usize, 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

fn main() { use std::u32; assert_eq!(5u32.overflowing_add(2), (7, false)); assert_eq!(u32::MAX.overflowing_add(1), (0, true)); }

use std::u32;

assert_eq!(5u32.overflowing_add(2), (7, false));
assert_eq!(u32::MAX.overflowing_add(1), (0, true));

fn overflowing_sub(self, rhs: usize) -> (usize, 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

fn main() { use std::u32; assert_eq!(5u32.overflowing_sub(2), (3, false)); assert_eq!(0u32.overflowing_sub(1), (u32::MAX, true)); }

use std::u32;

assert_eq!(5u32.overflowing_sub(2), (3, false));
assert_eq!(0u32.overflowing_sub(1), (u32::MAX, true));

fn overflowing_mul(self, rhs: usize) -> (usize, 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

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

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

fn overflowing_div(self, rhs: usize) -> (usize, 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

fn main() { assert_eq!(5u32.overflowing_div(2), (2, false)); }

assert_eq!(5u32.overflowing_div(2), (2, false));

fn overflowing_rem(self, rhs: usize) -> (usize, 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

fn main() { assert_eq!(5u32.overflowing_rem(2), (1, false)); }

assert_eq!(5u32.overflowing_rem(2), (1, false));

fn overflowing_neg(self) -> (usize, 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

fn main() { assert_eq!(0u32.overflowing_neg(), (0, false)); assert_eq!(2u32.overflowing_neg(), (-2i32 as u32, true)); }

assert_eq!(0u32.overflowing_neg(), (0, false));
assert_eq!(2u32.overflowing_neg(), (-2i32 as u32, true));

fn overflowing_shl(self, rhs: u32) -> (usize, 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

fn main() { assert_eq!(0x10u32.overflowing_shl(4), (0x100, false)); assert_eq!(0x10u32.overflowing_shl(36), (0x100, true)); }

assert_eq!(0x10u32.overflowing_shl(4), (0x100, false));
assert_eq!(0x10u32.overflowing_shl(36), (0x100, true));

fn overflowing_shr(self, rhs: u32) -> (usize, 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

fn main() { assert_eq!(0x10u32.overflowing_shr(4), (0x1, false)); assert_eq!(0x10u32.overflowing_shr(36), (0x1, true)); }

assert_eq!(0x10u32.overflowing_shr(4), (0x1, false));
assert_eq!(0x10u32.overflowing_shr(36), (0x1, true));

fn pow(self, exp: u32) -> usize

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

Examples

Basic usage:

fn main() { assert_eq!(2u32.pow(4), 16); }

assert_eq!(2u32.pow(4), 16);

fn is_power_of_two(self) -> bool

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

Examples

Basic usage:

fn main() { assert!(16u8.is_power_of_two()); assert!(!10u8.is_power_of_two()); }

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

fn next_power_of_two(self) -> usize

Returns the smallest power of two greater than or equal to self. Unspecified behavior on overflow.

Examples

Basic usage:

fn main() { assert_eq!(2u8.next_power_of_two(), 2); assert_eq!(3u8.next_power_of_two(), 4); }

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

fn checked_next_power_of_two(self) -> Option<usize>

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:

fn main() { assert_eq!(2u8.checked_next_power_of_two(), Some(2)); assert_eq!(3u8.checked_next_power_of_two(), Some(4)); assert_eq!(200u8.checked_next_power_of_two(), None); }

assert_eq!(2u8.checked_next_power_of_two(), Some(2));
assert_eq!(3u8.checked_next_power_of_two(), Some(4));
assert_eq!(200u8.checked_next_power_of_two(), None);

Trait Implementations

impl Zero for usize

fn zero() -> usize

The "zero" (usually, additive identity) for this type.

impl One for usize

fn one() -> usize

The "one" (usually, multiplicative identity) for this type.

impl FromStr for usize

type Err = ParseIntError

The associated error which can be returned from parsing.

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

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

impl TryFrom<u8> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<u16> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<u32> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<u64> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<usize> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<i8> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<i16> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<i32> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<i64> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<isize> for usize

type Err = TryFromIntError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl From<u8> for usize

fn from(small: u8) -> usize

Performs the conversion.

impl Zeroable for usize

impl Add<usize> for usize

type Output = usize

The resulting type after applying the + operator

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

The method for the + operator

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

type Output = usize::Output

The resulting type after applying the + operator

fn add(self, other: usize) -> usize::Output

The method for the + operator

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

type Output = usize::Output

The resulting type after applying the + operator

fn add(self, other: &'a usize) -> usize::Output

The method for the + operator

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

type Output = usize::Output

The resulting type after applying the + operator

fn add(self, other: &'a usize) -> usize::Output

The method for the + operator

impl Sub<usize> for usize

type Output = usize

The resulting type after applying the - operator

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

The method for the - operator

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

type Output = usize::Output

The resulting type after applying the - operator

fn sub(self, other: usize) -> usize::Output

The method for the - operator

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

type Output = usize::Output

The resulting type after applying the - operator

fn sub(self, other: &'a usize) -> usize::Output

The method for the - operator

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

type Output = usize::Output

The resulting type after applying the - operator

fn sub(self, other: &'a usize) -> usize::Output

The method for the - operator

impl Mul<usize> for usize

type Output = usize

The resulting type after applying the * operator

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

The method for the * operator

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

type Output = usize::Output

The resulting type after applying the * operator

fn mul(self, other: usize) -> usize::Output

The method for the * operator

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

type Output = usize::Output

The resulting type after applying the * operator

fn mul(self, other: &'a usize) -> usize::Output

The method for the * operator

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

type Output = usize::Output

The resulting type after applying the * operator

fn mul(self, other: &'a usize) -> usize::Output

The method for the * operator

impl Div<usize> for usize

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

type Output = usize

The resulting type after applying the / operator

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

The method for the / operator

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

type Output = usize::Output

The resulting type after applying the / operator

fn div(self, other: usize) -> usize::Output

The method for the / operator

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

type Output = usize::Output

The resulting type after applying the / operator

fn div(self, other: &'a usize) -> usize::Output

The method for the / operator

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

type Output = usize::Output

The resulting type after applying the / operator

fn div(self, other: &'a usize) -> usize::Output

The method for the / operator

impl Rem<usize> for usize

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

type Output = usize

The resulting type after applying the % operator

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

The method for the % operator

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

type Output = usize::Output

The resulting type after applying the % operator

fn rem(self, other: usize) -> usize::Output

The method for the % operator

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

type Output = usize::Output

The resulting type after applying the % operator

fn rem(self, other: &'a usize) -> usize::Output

The method for the % operator

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

type Output = usize::Output

The resulting type after applying the % operator

fn rem(self, other: &'a usize) -> usize::Output

The method for the % operator

impl Not for usize

type Output = usize

The resulting type after applying the ! operator

fn not(self) -> usize

The method for the unary ! operator

impl<'a> Not for &'a usize

type Output = usize::Output

The resulting type after applying the ! operator

fn not(self) -> usize::Output

The method for the unary ! operator

impl BitAnd<usize> for usize

type Output = usize

The resulting type after applying the & operator

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

The method for the & operator

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

type Output = usize::Output

The resulting type after applying the & operator

fn bitand(self, other: usize) -> usize::Output

The method for the & operator

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

type Output = usize::Output

The resulting type after applying the & operator

fn bitand(self, other: &'a usize) -> usize::Output

The method for the & operator

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

type Output = usize::Output

The resulting type after applying the & operator

fn bitand(self, other: &'a usize) -> usize::Output

The method for the & operator

impl BitOr<usize> for usize

type Output = usize

The resulting type after applying the | operator

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

The method for the | operator

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

type Output = usize::Output

The resulting type after applying the | operator

fn bitor(self, other: usize) -> usize::Output

The method for the | operator

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

type Output = usize::Output

The resulting type after applying the | operator

fn bitor(self, other: &'a usize) -> usize::Output

The method for the | operator

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

type Output = usize::Output

The resulting type after applying the | operator

fn bitor(self, other: &'a usize) -> usize::Output

The method for the | operator

impl BitXor<usize> for usize

type Output = usize

The resulting type after applying the ^ operator

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

The method for the ^ operator

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

type Output = usize::Output

The resulting type after applying the ^ operator

fn bitxor(self, other: usize) -> usize::Output

The method for the ^ operator

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

type Output = usize::Output

The resulting type after applying the ^ operator

fn bitxor(self, other: &'a usize) -> usize::Output

The method for the ^ operator

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

type Output = usize::Output

The resulting type after applying the ^ operator

fn bitxor(self, other: &'a usize) -> usize::Output

The method for the ^ operator

impl Shl<u8> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

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

The method for the << operator

impl Shl<u16> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: u16) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a u16) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a u16) -> usize::Output

The method for the << operator

impl Shl<u32> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: u32) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a u32) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a u32) -> usize::Output

The method for the << operator

impl Shl<u64> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: u64) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a u64) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a u64) -> usize::Output

The method for the << operator

impl Shl<usize> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a usize) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a usize) -> usize::Output

The method for the << operator

impl Shl<i8> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: i8) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i8) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i8) -> usize::Output

The method for the << operator

impl Shl<i16> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: i16) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i16) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i16) -> usize::Output

The method for the << operator

impl Shl<i32> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: i32) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i32) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i32) -> usize::Output

The method for the << operator

impl Shl<i64> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: i64) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i64) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a i64) -> usize::Output

The method for the << operator

impl Shl<isize> for usize

type Output = usize

The resulting type after applying the << operator

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

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: isize) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a isize) -> usize::Output

The method for the << operator

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

type Output = usize::Output

The resulting type after applying the << operator

fn shl(self, other: &'a isize) -> usize::Output

The method for the << operator

impl Shr<u8> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

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

The method for the >> operator

impl Shr<u16> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: u16) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a u16) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a u16) -> usize::Output

The method for the >> operator

impl Shr<u32> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: u32) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a u32) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a u32) -> usize::Output

The method for the >> operator

impl Shr<u64> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: u64) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a u64) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a u64) -> usize::Output

The method for the >> operator

impl Shr<usize> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a usize) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a usize) -> usize::Output

The method for the >> operator

impl Shr<i8> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: i8) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i8) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i8) -> usize::Output

The method for the >> operator

impl Shr<i16> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: i16) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i16) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i16) -> usize::Output

The method for the >> operator

impl Shr<i32> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: i32) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i32) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i32) -> usize::Output

The method for the >> operator

impl Shr<i64> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: i64) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i64) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a i64) -> usize::Output

The method for the >> operator

impl Shr<isize> for usize

type Output = usize

The resulting type after applying the >> operator

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

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: isize) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a isize) -> usize::Output

The method for the >> operator

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

type Output = usize::Output

The resulting type after applying the >> operator

fn shr(self, other: &'a isize) -> usize::Output

The method for the >> operator

impl AddAssign<usize> for usize

fn add_assign(&mut self, other: usize)

The method for the += operator

impl SubAssign<usize> for usize

fn sub_assign(&mut self, other: usize)

The method for the -= operator

impl MulAssign<usize> for usize

fn mul_assign(&mut self, other: usize)

The method for the *= operator

impl DivAssign<usize> for usize

fn div_assign(&mut self, other: usize)

The method for the /= operator

impl RemAssign<usize> for usize

fn rem_assign(&mut self, other: usize)

The method for the %= operator

impl BitAndAssign<usize> for usize

fn bitand_assign(&mut self, other: usize)

The method for the & operator

impl BitOrAssign<usize> for usize

fn bitor_assign(&mut self, other: usize)

The method for the |= operator

impl BitXorAssign<usize> for usize

fn bitxor_assign(&mut self, other: usize)

The method for the ^= operator

impl ShlAssign<u8> for usize

fn shl_assign(&mut self, other: u8)

The method for the <<= operator

impl ShlAssign<u16> for usize

fn shl_assign(&mut self, other: u16)

The method for the <<= operator

impl ShlAssign<u32> for usize

fn shl_assign(&mut self, other: u32)

The method for the <<= operator

impl ShlAssign<u64> for usize

fn shl_assign(&mut self, other: u64)

The method for the <<= operator

impl ShlAssign<usize> for usize

fn shl_assign(&mut self, other: usize)

The method for the <<= operator

impl ShlAssign<i8> for usize

fn shl_assign(&mut self, other: i8)

The method for the <<= operator

impl ShlAssign<i16> for usize

fn shl_assign(&mut self, other: i16)

The method for the <<= operator

impl ShlAssign<i32> for usize

fn shl_assign(&mut self, other: i32)

The method for the <<= operator

impl ShlAssign<i64> for usize

fn shl_assign(&mut self, other: i64)

The method for the <<= operator

impl ShlAssign<isize> for usize

fn shl_assign(&mut self, other: isize)

The method for the <<= operator

impl ShrAssign<u8> for usize

fn shr_assign(&mut self, other: u8)

The method for the >>= operator

impl ShrAssign<u16> for usize

fn shr_assign(&mut self, other: u16)

The method for the >>= operator

impl ShrAssign<u32> for usize

fn shr_assign(&mut self, other: u32)

The method for the >>= operator

impl ShrAssign<u64> for usize

fn shr_assign(&mut self, other: u64)

The method for the >>= operator

impl ShrAssign<usize> for usize

fn shr_assign(&mut self, other: usize)

The method for the >>= operator

impl ShrAssign<i8> for usize

fn shr_assign(&mut self, other: i8)

The method for the >>= operator

impl ShrAssign<i16> for usize

fn shr_assign(&mut self, other: i16)

The method for the >>= operator

impl ShrAssign<i32> for usize

fn shr_assign(&mut self, other: i32)

The method for the >>= operator

impl ShrAssign<i64> for usize

fn shr_assign(&mut self, other: i64)

The method for the >>= operator

impl ShrAssign<isize> for usize

fn shr_assign(&mut self, other: isize)

The method for the >>= operator

impl PartialEq<usize> for usize

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

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

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

This method tests for !=.

impl Eq for usize

impl PartialOrd<usize> for usize

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

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

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

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

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

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

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

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

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

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

impl Ord for usize

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

This method returns an Ordering between self and other.

impl Clone for usize

fn clone(&self) -> usize

Returns a deep copy of the value.

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

Performs copy-assignment from source.

impl Default for usize

fn default() -> usize

Returns the "default value" for a type.

impl Step for usize

fn step(&self, by: &usize) -> Option<usize>

Steps self if possible.

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

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

impl Hash for usize

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

Feeds this value into the state given, updating the hasher as necessary.

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

Feeds a slice of this type into the state provided.

impl Binary for usize

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

Formats the value using the given formatter.

impl Octal for usize

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

Formats the value using the given formatter.

impl LowerHex for usize

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

Formats the value using the given formatter.

impl UpperHex for usize

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

Formats the value using the given formatter.

impl Debug for usize

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

Formats the value using the given formatter.

impl Display for usize

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

Formats the value using the given formatter.