Primitive Type usize1.0.0 [−]

The pointer-sized unsigned integer type.

The size of this primitive is how many bytes it takes to reference any location in memory. For example, on a 32 bit target, this is 4 bytes and on a 64 bit target, this is 8 bytes.

See also the std::usize module.

Methods

`impl usize`
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`pub const fn min_value() -> usize`
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Returns the smallest value that can be represented by this integer type.

Examples

Basic usage:

assert_eq!(usize::min_value(), 0);Run

`pub const fn max_value() -> usize`
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Returns the largest value that can be represented by this integer type.

Examples

Basic usage:

assert_eq!(usize::max_value(), 18446744073709551615);Run

`pub fn from_str_radix(src: &str, radix: u32) -> Result<usize, ParseIntError>`
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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!(usize::from_str_radix("A", 16), Ok(10));Run

`pub fn count_ones(self) -> u32`
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Returns the number of ones in the binary representation of self.

Examples

Basic usage:

let n = 0b01001100usize;

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

`pub fn count_zeros(self) -> u32`
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Returns the number of zeros in the binary representation of self.

Examples

Basic usage:

assert_eq!(usize::max_value().count_zeros(), 0);Run

`pub fn leading_zeros(self) -> u32`
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Returns the number of leading zeros in the binary representation of self.

Examples

Basic usage:

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

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

`pub fn trailing_zeros(self) -> u32`
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Returns the number of trailing zeros in the binary representation of self.

Examples

Basic usage:

let n = 0b0101000usize;

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

`pub fn rotate_left(self, n: u32) -> usize`
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Shifts the bits to the left by a specified amount, n, wrapping the truncated bits to the end of the resulting integer.

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

Examples

Basic usage:

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

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

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

`pub fn rotate_right(self, n: u32) -> usize`
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Shifts the bits to the right by a specified amount, n, wrapping the truncated bits to the beginning of the resulting integer.

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

Examples

Basic usage:

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

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

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

`pub fn swap_bytes(self) -> usize`
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Reverses the byte order of the integer.

Examples

Basic usage:

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

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

let m = n.swap_bytes();

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

`pub fn reverse_bits(self) -> usize`
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🔬 This is a nightly-only experimental API. (reverse_bits #48763)

Reverses the bit pattern of the integer.

Examples

Basic usage:

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

#![feature(reverse_bits)]

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

let m = n.reverse_bits();

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

`pub fn from_be(x: usize) -> usize`
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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 = 0x1Ausize;

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

`pub fn from_le(x: usize) -> usize`
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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 = 0x1Ausize;

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

`pub fn to_be(self) -> usize`
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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 = 0x1Ausize;

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

`pub fn to_le(self) -> usize`
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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 = 0x1Ausize;

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

`pub fn checked_add(self, rhs: usize) -> Option<usize>`
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Checked integer addition. Computes self + rhs, returning None if overflow occurred.

Examples

Basic usage:

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

`pub fn checked_sub(self, rhs: usize) -> Option<usize>`
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Checked integer subtraction. Computes self - rhs, returning None if overflow occurred.

Examples

Basic usage:

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

`pub fn checked_mul(self, rhs: usize) -> Option<usize>`
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Checked integer multiplication. Computes self * rhs, returning None if overflow occurred.

Examples

Basic usage:

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

`pub fn checked_div(self, rhs: usize) -> Option<usize>`
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Checked integer division. Computes self / rhs, returning None if rhs == 0.

Examples

Basic usage:

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

`pub fn checked_rem(self, rhs: usize) -> Option<usize>`
1.7.0
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Checked integer remainder. Computes self % rhs, returning None if rhs == 0.

Examples

Basic usage:

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

`pub fn checked_neg(self) -> Option<usize>`
1.7.0
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Checked negation. Computes -self, returning None unless self == 0.

Note that negating any positive integer will overflow.

Examples

Basic usage:

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

`pub fn checked_shl(self, rhs: u32) -> Option<usize>`
1.7.0
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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!(0x1usize.checked_shl(4), Some(0x10));
assert_eq!(0x10usize.checked_shl(129), None);Run

`pub fn checked_shr(self, rhs: u32) -> Option<usize>`
1.7.0
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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!(0x10usize.checked_shr(4), Some(0x1));
assert_eq!(0x10usize.checked_shr(129), None);Run

`pub fn checked_pow(self, exp: u32) -> Option<usize>`
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🔬 This is a nightly-only experimental API. (no_panic_pow #48320)

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

Examples

Basic usage:

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

`pub fn saturating_add(self, rhs: usize) -> usize`
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Saturating integer addition. Computes self + rhs, saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

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

`pub fn saturating_sub(self, rhs: usize) -> usize`
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Saturating integer subtraction. Computes self - rhs, saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

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

`pub fn saturating_mul(self, rhs: usize) -> usize`
1.7.0
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Saturating integer multiplication. Computes self * rhs, saturating at the numeric bounds instead of overflowing.

Examples

Basic usage:

use std::usize;

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

`pub fn saturating_pow(self, exp: u32) -> usize`
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🔬 This is a nightly-only experimental API. (no_panic_pow #48320)

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

Examples

Basic usage:

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

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

`pub fn wrapping_add(self, rhs: usize) -> usize`
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Wrapping (modular) addition. Computes self + rhs, wrapping around at the boundary of the type.

Examples

Basic usage:

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

`pub fn wrapping_sub(self, rhs: usize) -> usize`
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Wrapping (modular) subtraction. Computes self - rhs, wrapping around at the boundary of the type.

Examples

Basic usage:

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

`pub fn wrapping_mul(self, rhs: usize) -> usize`
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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);Run

`pub fn wrapping_div(self, rhs: usize) -> usize`
1.2.0
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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!(100usize.wrapping_div(10), 10);Run

`pub fn wrapping_rem(self, rhs: usize) -> usize`
1.2.0
[src]

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!(100usize.wrapping_rem(10), 0);Run

`pub fn wrapping_neg(self) -> usize`
1.2.0
[src]

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);Run

`pub fn wrapping_shl(self, rhs: u32) -> usize`
1.2.0
[src]

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!(1usize.wrapping_shl(7), 128);
assert_eq!(1usize.wrapping_shl(128), 1);Run

`pub fn wrapping_shr(self, rhs: u32) -> usize`
1.2.0
[src]

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!(128usize.wrapping_shr(7), 1);
assert_eq!(128usize.wrapping_shr(128), 128);Run

`pub fn wrapping_pow(self, exp: u32) -> usize`
[src]

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

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

Examples

Basic usage:

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

`pub fn overflowing_add(self, rhs: usize) -> (usize, bool)`
1.7.0
[src]

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::usize;

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

`pub fn overflowing_sub(self, rhs: usize) -> (usize, bool)`
1.7.0
[src]

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::usize;

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

`pub fn overflowing_mul(self, rhs: usize) -> (usize, bool)`
1.7.0
[src]

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));Run

`pub fn overflowing_div(self, rhs: usize) -> (usize, bool)`
1.7.0
[src]

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!(5usize.overflowing_div(2), (2, false));Run

`pub fn overflowing_rem(self, rhs: usize) -> (usize, bool)`
1.7.0
[src]

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!(5usize.overflowing_rem(2), (1, false));Run

`pub fn overflowing_neg(self) -> (usize, bool)`
1.7.0
[src]

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

`pub fn overflowing_shl(self, rhs: u32) -> (usize, bool)`
1.7.0
[src]

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!(0x1usize.overflowing_shl(4), (0x10, false));
assert_eq!(0x1usize.overflowing_shl(132), (0x10, true));Run

`pub fn overflowing_shr(self, rhs: u32) -> (usize, bool)`
1.7.0
[src]

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!(0x10usize.overflowing_shr(4), (0x1, false));
assert_eq!(0x10usize.overflowing_shr(132), (0x1, true));Run

`pub fn overflowing_pow(self, exp: u32) -> (usize, bool)`
[src]

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

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

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

Examples

Basic usage:

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

`pub fn pow(self, exp: u32) -> usize`
[src]

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

Examples

Basic usage:

assert_eq!(2usize.pow(5), 32);Run

`pub fn is_power_of_two(self) -> bool`
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Returns true if and only if self == 2^k for some k.

Examples

Basic usage:

assert!(16usize.is_power_of_two());
assert!(!10usize.is_power_of_two());Run

`pub fn next_power_of_two(self) -> usize`
[src]

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!(2usize.next_power_of_two(), 2);
assert_eq!(3usize.next_power_of_two(), 4);Run

`pub fn checked_next_power_of_two(self) -> Option<usize>`
[src]

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

Trait Implementations

`impl<'a, 'b> BitAnd<&'a usize> for &'b usize`
[src]

`type Output = <usize as BitAnd<usize>>::Output`

The resulting type after applying the & operator.

`fn bitand(self, other: &'a usize) -> <usize as BitAnd<usize>>::Output`
[src]

Performs the & operation.

`impl<'a> BitAnd<&'a usize> for usize`
[src]

`type Output = <usize as BitAnd<usize>>::Output`

The resulting type after applying the & operator.

`fn bitand(self, other: &'a usize) -> <usize as BitAnd<usize>>::Output`
[src]

Performs the & operation.

`impl<'a> BitAnd<usize> for &'a usize`
[src]

`type Output = <usize as BitAnd<usize>>::Output`

The resulting type after applying the & operator.

`fn bitand(self, other: usize) -> <usize as BitAnd<usize>>::Output`
[src]

Performs the & operation.

`impl BitAnd<usize> for usize`
[src]

`type Output = usize`

The resulting type after applying the & operator.

`fn bitand(self, rhs: usize) -> usize`
[src]

Performs the & operation.

`impl ShlAssign<u128> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: u128)`
[src]

Performs the <<= operation.

`impl ShlAssign<u32> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: u32)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a u32> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a u32)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a usize> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a usize)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a i16> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a i16)`
[src]

Performs the <<= operation.

`impl ShlAssign<u8> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: u8)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a i64> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a i64)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a isize> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a isize)`
[src]

Performs the <<= operation.

`impl ShlAssign<usize> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: usize)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a i128> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a i128)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a u64> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a u64)`
[src]

Performs the <<= operation.

`impl ShlAssign<i16> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: i16)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a u128> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a u128)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a i32> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a i32)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a u8> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a u8)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a i8> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a i8)`
[src]

Performs the <<= operation.

`impl ShlAssign<i8> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: i8)`
[src]

Performs the <<= operation.

`impl ShlAssign<i128> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: i128)`
[src]

Performs the <<= operation.

`impl ShlAssign<u16> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: u16)`
[src]

Performs the <<= operation.

`impl ShlAssign<isize> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: isize)`
[src]

Performs the <<= operation.

`impl ShlAssign<i32> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: i32)`
[src]

Performs the <<= operation.

`impl<'a> ShlAssign<&'a u16> for usize`
1.22.0
[src]

`fn shl_assign(&mut self, other: &'a u16)`
[src]

Performs the <<= operation.

`impl ShlAssign<u64> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: u64)`
[src]

Performs the <<= operation.

`impl ShlAssign<i64> for usize`
1.8.0
[src]

`fn shl_assign(&mut self, other: i64)`
[src]

Performs the <<= operation.

`impl Binary for usize`
[src]

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

Formats the value using the given formatter.

`impl Div<usize> for usize`
[src]

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`
[src]

Performs the / operation.

`impl<'a, 'b> Div<&'a usize> for &'b usize`
[src]

`type Output = <usize as Div<usize>>::Output`

The resulting type after applying the / operator.

`fn div(self, other: &'a usize) -> <usize as Div<usize>>::Output`
[src]

Performs the / operation.

`impl<'a> Div<usize> for &'a usize`
[src]

`type Output = <usize as Div<usize>>::Output`

The resulting type after applying the / operator.

`fn div(self, other: usize) -> <usize as Div<usize>>::Output`
[src]

Performs the / operation.

`impl<'a> Div<&'a usize> for usize`
[src]

`type Output = <usize as Div<usize>>::Output`

The resulting type after applying the / operator.

`fn div(self, other: &'a usize) -> <usize as Div<usize>>::Output`
[src]

Performs the / operation.

`impl BitOrAssign<usize> for usize`
1.8.0
[src]

`fn bitor_assign(&mut self, other: usize)`
[src]

Performs the |= operation.

`impl<'a> BitOrAssign<&'a usize> for usize`
1.22.0
[src]

`fn bitor_assign(&mut self, other: &'a usize)`
[src]

Performs the |= operation.

`impl Debug for usize`
[src]

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

Formats the value using the given formatter. Read more

`impl<'a, 'b> Add<&'a usize> for &'b usize`
[src]

`type Output = <usize as Add<usize>>::Output`

The resulting type after applying the + operator.

`fn add(self, other: &'a usize) -> <usize as Add<usize>>::Output`
[src]

Performs the + operation.

`impl Add<usize> for usize`
[src]

`type Output = usize`

The resulting type after applying the + operator.

`fn add(self, other: usize) -> usize`
[src]

Performs the + operation.

`impl<'a> Add<usize> for &'a usize`
[src]

`type Output = <usize as Add<usize>>::Output`

The resulting type after applying the + operator.

`fn add(self, other: usize) -> <usize as Add<usize>>::Output`
[src]

Performs the + operation.

`impl<'a> Add<&'a usize> for usize`
[src]

`type Output = <usize as Add<usize>>::Output`

The resulting type after applying the + operator.

`fn add(self, other: &'a usize) -> <usize as Add<usize>>::Output`
[src]

Performs the + operation.

`impl Sum<usize> for usize`
1.12.0
[src]

`fn sum(iter: I) -> usize where I: Iterator<Item = usize>,`
[src]

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

`impl<'a> Sum<&'a usize> for usize`
1.12.0
[src]

`fn sum(iter: I) -> usize where I: Iterator<Item = &'a usize>,`
[src]

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

`impl TryFrom<isize> for usize`
[src]

`type Error = TryFromIntError`

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

The type returned in the event of a conversion error.

`fn try_from(u: isize) -> Result<usize, TryFromIntError>`
[src]

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

Performs the conversion.

`impl TryFrom<i32> for usize`
[src]

`type Error = TryFromIntError`

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

The type returned in the event of a conversion error.

`fn try_from(u: i32) -> Result<usize, TryFromIntError>`
[src]

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

Performs the conversion.

`impl TryFrom<i8> for usize`
[src]

`type Error = TryFromIntError`

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

The type returned in the event of a conversion error.

`fn try_from(u: i8) -> Result<usize, TryFromIntError>`
[src]

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

Performs the conversion.

`impl TryFrom<i16> for usize`
[src]

`type Error = TryFromIntError`

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

The type returned in the event of a conversion error.

`fn try_from(u: i16) -> Result<usize, TryFromIntError>`
[src]

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

Performs the conversion.

`impl TryFrom<i128> for usize`
[src]

`type Error = TryFromIntError`

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

The type returned in the event of a conversion error.

`fn try_from(u: i128) -> Result<usize, TryFromIntError>`
[src]

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

Performs the conversion.

`impl TryFrom<i64> for usize`
[src]

`type Error = TryFromIntError`

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

The type returned in the event of a conversion error.

`fn try_from(u: i64) -> Result<usize, TryFromIntError>`
[src]

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

Performs the conversion.

`impl DivAssign<usize> for usize`
1.8.0
[src]

`fn div_assign(&mut self, other: usize)`
[src]

Performs the /= operation.

`impl<'a> DivAssign<&'a usize> for usize`
1.22.0
[src]

`fn div_assign(&mut self, other: &'a usize)`
[src]

Performs the /= operation.

`impl SubAssign<usize> for usize`
1.8.0
[src]

`fn sub_assign(&mut self, other: usize)`
[src]

Performs the -= operation.

`impl<'a> SubAssign<&'a usize> for usize`
1.22.0
[src]

`fn sub_assign(&mut self, other: &'a usize)`
[src]

Performs the -= operation.

`impl Ord for usize`
[src]

`fn cmp(&self, other: &usize) -> Ordering`
[src]

This method returns an Ordering between self and other. Read more

`fn max(self, other: Self) -> Self`
1.21.0
[src]

Compares and returns the maximum of two values. Read more

`fn min(self, other: Self) -> Self`
1.21.0
[src]

Compares and returns the minimum of two values. Read more

`impl<'a> BitXor<&'a usize> for usize`
[src]

`type Output = <usize as BitXor<usize>>::Output`

The resulting type after applying the ^ operator.

`fn bitxor(self, other: &'a usize) -> <usize as BitXor<usize>>::Output`
[src]

Performs the ^ operation.

`impl<'a, 'b> BitXor<&'a usize> for &'b usize`
[src]

`type Output = <usize as BitXor<usize>>::Output`

The resulting type after applying the ^ operator.

`fn bitxor(self, other: &'a usize) -> <usize as BitXor<usize>>::Output`
[src]

Performs the ^ operation.

`impl BitXor<usize> for usize`
[src]

`type Output = usize`

The resulting type after applying the ^ operator.

`fn bitxor(self, other: usize) -> usize`
[src]

Performs the ^ operation.

`impl<'a> BitXor<usize> for &'a usize`
[src]

`type Output = <usize as BitXor<usize>>::Output`

The resulting type after applying the ^ operator.

`fn bitxor(self, other: usize) -> <usize as BitXor<usize>>::Output`
[src]

Performs the ^ operation.

`impl Hash for usize`
[src]

`fn hash<H>(&self, state: &mut H) where H: Hasher,`
[src]

Feeds this value into the given [Hasher]. Read more

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

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

`impl PartialEq<usize> for usize`
[src]

`fn eq(&self, other: &usize) -> bool`
[src]

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

`fn ne(&self, other: &usize) -> bool`
[src]

This method tests for !=.

`impl Not for usize`
[src]

`type Output = usize`

The resulting type after applying the ! operator.

`fn not(self) -> usize`
[src]

Performs the unary ! operation.

`impl<'a> Not for &'a usize`
[src]

`type Output = <usize as Not>::Output`

The resulting type after applying the ! operator.

`fn not(self) -> <usize as Not>::Output`
[src]

Performs the unary ! operation.

`impl<T> SliceIndex<[T]> for usize`
1.15.0
[src]

`type Output = T`

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

The output type returned by methods.

`fn get(self, slice: &[T]) -> Option<&T>`
[src]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, if in bounds. Read more

`fn get_mut(self, slice: &mut [T]) -> Option<&mut T>`
[src]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, if in bounds. Read more

ⓘImportant traits for &'a mut I
Important traits for &'a mut I
`impl<'a, I> Iterator for &'a mut I where I: Iterator + ?Sized, type Item = ::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`
`unsafe fn get_unchecked(self, slice: &[T]) -> &T`
[src]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, without performing any bounds checking. Read more

ⓘImportant traits for &'a mut I
Important traits for &'a mut I
`impl<'a, I> Iterator for &'a mut I where I: Iterator + ?Sized, type Item = ::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`
`unsafe fn get_unchecked_mut(self, slice: &mut [T]) -> &mut T`
[src]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, without performing any bounds checking. Read more

ⓘImportant traits for &'a mut I
Important traits for &'a mut I
`impl<'a, I> Iterator for &'a mut I where I: Iterator + ?Sized, type Item = ::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`
`fn index(self, slice: &[T]) -> &T`
[src]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a shared reference to the output at this location, panicking if out of bounds. Read more

ⓘImportant traits for &'a mut I
Important traits for &'a mut I
`impl<'a, I> Iterator for &'a mut I where I: Iterator + ?Sized, type Item = ::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`
`fn index_mut(self, slice: &mut [T]) -> &mut T`
[src]

🔬 This is a nightly-only experimental API. (slice_get_slice #35729)

Returns a mutable reference to the output at this location, panicking if out of bounds. Read more

`impl From<u16> for usize`
1.26.0
[src]

`fn from(small: u16) -> usize`
[src]

Performs the conversion.

`impl From<u8> for usize`
1.5.0
[src]

`fn from(small: u8) -> usize`
[src]

Performs the conversion.

`impl FromStr for usize`
[src]

`type Err = ParseIntError`

The associated error which can be returned from parsing.

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

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

`impl LowerHex for usize`
[src]

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

Formats the value using the given formatter.

`impl Display for usize`
[src]

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

Formats the value using the given formatter. Read more

`impl Mul<usize> for usize`
[src]

`type Output = usize`

The resulting type after applying the * operator.

`fn mul(self, other: usize) -> usize`
[src]

Performs the * operation.

`impl<'a> Mul<&'a usize> for usize`
[src]

`type Output = <usize as Mul<usize>>::Output`

The resulting type after applying the * operator.

`fn mul(self, other: &'a usize) -> <usize as Mul<usize>>::Output`
[src]

Performs the * operation.

`impl<'a, 'b> Mul<&'a usize> for &'b usize`
[src]

`type Output = <usize as Mul<usize>>::Output`

The resulting type after applying the * operator.

`fn mul(self, other: &'a usize) -> <usize as Mul<usize>>::Output`
[src]

Performs the * operation.

`impl<'a> Mul<usize> for &'a usize`
[src]

`type Output = <usize as Mul<usize>>::Output`

The resulting type after applying the * operator.

`fn mul(self, other: usize) -> <usize as Mul<usize>>::Output`
[src]

Performs the * operation.

`impl Product<usize> for usize`
1.12.0
[src]

`fn product(iter: I) -> usize where I: Iterator<Item = usize>,`
[src]

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

`impl<'a> Product<&'a usize> for usize`
1.12.0
[src]

`fn product(iter: I) -> usize where I: Iterator<Item = &'a usize>,`
[src]

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

`impl BitXorAssign<usize> for usize`
1.8.0
[src]

`fn bitxor_assign(&mut self, other: usize)`
[src]

Performs the ^= operation.

`impl<'a> BitXorAssign<&'a usize> for usize`
1.22.0
[src]

`fn bitxor_assign(&mut self, other: &'a usize)`
[src]

Performs the ^= operation.

`impl<'a> BitAndAssign<&'a usize> for usize`
1.22.0
[src]

`fn bitand_assign(&mut self, other: &'a usize)`
[src]

Performs the &= operation.

`impl BitAndAssign<usize> for usize`
1.8.0
[src]

`fn bitand_assign(&mut self, other: usize)`
[src]

Performs the &= operation.

`impl<'a, 'b> BitOr<&'a usize> for &'b usize`
[src]

`type Output = <usize as BitOr<usize>>::Output`

The resulting type after applying the | operator.

`fn bitor(self, other: &'a usize) -> <usize as BitOr<usize>>::Output`
[src]

Performs the | operation.

`impl<'a> BitOr<&'a usize> for usize`
[src]

`type Output = <usize as BitOr<usize>>::Output`

The resulting type after applying the | operator.

`fn bitor(self, other: &'a usize) -> <usize as BitOr<usize>>::Output`
[src]

Performs the | operation.

`impl BitOr<usize> for usize`
[src]

`type Output = usize`

The resulting type after applying the | operator.

`fn bitor(self, rhs: usize) -> usize`
[src]

Performs the | operation.

`impl<'a> BitOr<usize> for &'a usize`
[src]

`type Output = <usize as BitOr<usize>>::Output`

The resulting type after applying the | operator.

`fn bitor(self, other: usize) -> <usize as BitOr<usize>>::Output`
[src]

Performs the | operation.

`impl RemAssign<usize> for usize`
1.8.0
[src]

`fn rem_assign(&mut self, other: usize)`
[src]

Performs the %= operation.

`impl<'a> RemAssign<&'a usize> for usize`
1.22.0
[src]

`fn rem_assign(&mut self, other: &'a usize)`
[src]

Performs the %= operation.

`impl Step for usize`
[src]

`fn steps_between(start: &usize, end: &usize) -> Option<usize>`
[src]

🔬 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. Read more

`fn add_usize(&self, n: usize) -> Option<usize>`
[src]

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

likely to be replaced by finer-grained traits

Add an usize, returning None on overflow

`fn replace_one(&mut self) -> usize`
[src]

🔬 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) -> usize`
[src]

🔬 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) -> usize`
[src]

🔬 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) -> usize`
[src]

🔬 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> MulAssign<&'a usize> for usize`
1.22.0
[src]

`fn mul_assign(&mut self, other: &'a usize)`
[src]

Performs the *= operation.

`impl MulAssign<usize> for usize`
1.8.0
[src]

`fn mul_assign(&mut self, other: usize)`
[src]

Performs the *= operation.

`impl AddAssign<usize> for usize`
1.8.0
[src]

`fn add_assign(&mut self, other: usize)`
[src]

Performs the += operation.

`impl<'a> AddAssign<&'a usize> for usize`
1.22.0
[src]

`fn add_assign(&mut self, other: &'a usize)`
[src]

Performs the += operation.

`impl Default for usize`
[src]

`fn default() -> usize`
[src]

Returns the default value of 0

`impl UpperHex for usize`
[src]

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

Formats the value using the given formatter.

`impl ShrAssign<i64> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: i64)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a u64> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a u64)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a i8> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a i8)`
[src]

Performs the >>= operation.

`impl ShrAssign<i128> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: i128)`
[src]

Performs the >>= operation.

`impl ShrAssign<u16> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: u16)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a u32> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a u32)`
[src]

Performs the >>= operation.

`impl ShrAssign<usize> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: usize)`
[src]

Performs the >>= operation.

`impl ShrAssign<u8> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: u8)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a usize> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a usize)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a i16> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a i16)`
[src]

Performs the >>= operation.

`impl ShrAssign<u64> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: u64)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a i128> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a i128)`
[src]

Performs the >>= operation.

`impl ShrAssign<i16> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: i16)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a u128> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a u128)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a u8> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a u8)`
[src]

Performs the >>= operation.

`impl ShrAssign<u128> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: u128)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a isize> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a isize)`
[src]

Performs the >>= operation.

`impl ShrAssign<isize> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: isize)`
[src]

Performs the >>= operation.

`impl ShrAssign<u32> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: u32)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a i32> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a i32)`
[src]

Performs the >>= operation.

`impl ShrAssign<i8> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: i8)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a u16> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a u16)`
[src]

Performs the >>= operation.

`impl<'a> ShrAssign<&'a i64> for usize`
1.22.0
[src]

`fn shr_assign(&mut self, other: &'a i64)`
[src]

Performs the >>= operation.

`impl ShrAssign<i32> for usize`
1.8.0
[src]

`fn shr_assign(&mut self, other: i32)`
[src]

Performs the >>= operation.

`impl PartialOrd<usize> for usize`
[src]

`fn partial_cmp(&self, other: &usize) -> Option<Ordering>`
[src]

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

`fn lt(&self, other: &usize) -> bool`
[src]

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

`fn le(&self, other: &usize) -> bool`
[src]

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

`fn ge(&self, other: &usize) -> bool`
[src]

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

`fn gt(&self, other: &usize) -> bool`
[src]

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

`impl Octal for usize`
[src]

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

Formats the value using the given formatter.

`impl<'a, 'b> Sub<&'a usize> for &'b usize`
[src]

`type Output = <usize as Sub<usize>>::Output`

The resulting type after applying the - operator.

`fn sub(self, other: &'a usize) -> <usize as Sub<usize>>::Output`
[src]

Performs the - operation.

`impl<'a> Sub<usize> for &'a usize`
[src]

`type Output = <usize as Sub<usize>>::Output`

The resulting type after applying the - operator.

`fn sub(self, other: usize) -> <usize as Sub<usize>>::Output`
[src]

Performs the - operation.

`impl Sub<usize> for usize`
[src]

`type Output = usize`

The resulting type after applying the - operator.

`fn sub(self, other: usize) -> usize`
[src]

Performs the - operation.

`impl<'a> Sub<&'a usize> for usize`
[src]

`type Output = <usize as Sub<usize>>::Output`

The resulting type after applying the - operator.