1.26.0[]Primitive Type i128

The 128-bit signed integer type.

See also the std::i128 module.

Methods

impl i128
[src]

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

Examples

Basic usage:

assert_eq!(i128::min_value(), -170141183460469231731687303715884105728);Run

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

Examples

Basic usage:

assert_eq!(i128::max_value(), 170141183460469231731687303715884105727);Run

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

The string is expected to be an optional + or - 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!(i128::from_str_radix("A", 16), Ok(10));Run

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

Examples

Basic usage:

let n = 0b100_0000i128;

assert_eq!(n.count_ones(), 1);Run

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

Examples

Basic usage:

assert_eq!(i128::max_value().count_zeros(), 1);Run

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

Examples

Basic usage:

let n = -1i128;

assert_eq!(n.leading_zeros(), 0);Run

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

Examples

Basic usage:

let n = -4i128;

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

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:

let n = 0x13f40000000000000000000000004f76i128;
let m = 0x4f7613f4;

assert_eq!(n.rotate_left(16), m);Run

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:

let n = 0x4f7613f4i128;
let m = 0x13f40000000000000000000000004f76;

assert_eq!(n.rotate_right(16), m);Run

Reverses the byte order of the integer.

Examples

Basic usage:

let n = 0x12345678901234567890123456789012i128;

let m = n.swap_bytes();

assert_eq!(m, 0x12907856341290785634129078563412);Run

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

Reverses the bit pattern of the integer.

Examples

Basic usage:

#![feature(reverse_bits)]

let n = 0x12345678901234567890123456789012i128;
let m = n.reverse_bits();

assert_eq!(m, 0x48091e6a2c48091e6a2c48091e6a2c48);Run

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 = 0x1Ai128;

if cfg!(target_endian = "big") {
    assert_eq!(i128::from_be(n), n)
} else {
    assert_eq!(i128::from_be(n), n.swap_bytes())
}Run

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 = 0x1Ai128;

if cfg!(target_endian = "little") {
    assert_eq!(i128::from_le(n), n)
} else {
    assert_eq!(i128::from_le(n), n.swap_bytes())
}Run

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 = 0x1Ai128;

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

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 = 0x1Ai128;

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

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

Examples

Basic usage:

assert_eq!((i128::max_value() - 2).checked_add(1), Some(i128::max_value() - 1));
assert_eq!((i128::max_value() - 2).checked_add(3), None);Run

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

Examples

Basic usage:

assert_eq!((i128::min_value() + 2).checked_sub(1), Some(i128::min_value() + 1));
assert_eq!((i128::min_value() + 2).checked_sub(3), None);Run

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

Examples

Basic usage:

assert_eq!(i128::max_value().checked_mul(1), Some(i128::max_value()));
assert_eq!(i128::max_value().checked_mul(2), None);Run

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

Examples

Basic usage:

assert_eq!((i128::min_value() + 1).checked_div(-1), Some(170141183460469231731687303715884105727));
assert_eq!(i128::min_value().checked_div(-1), None);
assert_eq!((1i128).checked_div(0), None);Run

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

Checked Euclidean division. Computes self.div_euc(rhs), returning None if rhs == 0 or the division results in overflow.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!((i128::min_value() + 1).checked_div_euc(-1), Some(170141183460469231731687303715884105727));
assert_eq!(i128::min_value().checked_div_euc(-1), None);
assert_eq!((1i128).checked_div_euc(0), None);Run

Checked integer remainder. Computes self % rhs, returning None if rhs == 0 or the division results in overflow.

Examples

Basic usage:

use std::i128;

assert_eq!(5i128.checked_rem(2), Some(1));
assert_eq!(5i128.checked_rem(0), None);
assert_eq!(i128::MIN.checked_rem(-1), None);Run

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

Checked Euclidean modulo. Computes self.mod_euc(rhs), returning None if rhs == 0 or the division results in overflow.

Examples

Basic usage:

#![feature(euclidean_division)]
use std::i128;

assert_eq!(5i128.checked_mod_euc(2), Some(1));
assert_eq!(5i128.checked_mod_euc(0), None);
assert_eq!(i128::MIN.checked_mod_euc(-1), None);Run

Checked negation. Computes -self, returning None if self == MIN.

Examples

Basic usage:

use std::i128;

assert_eq!(5i128.checked_neg(), Some(-5));
assert_eq!(i128::MIN.checked_neg(), None);Run

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!(0x1i128.checked_shl(4), Some(0x10));
assert_eq!(0x1i128.checked_shl(129), None);Run

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!(0x10i128.checked_shr(4), Some(0x1));
assert_eq!(0x10i128.checked_shr(128), None);Run

Checked absolute value. Computes self.abs(), returning None if self == MIN.

Examples

Basic usage:

use std::i128;

assert_eq!((-5i128).checked_abs(), Some(5));
assert_eq!(i128::MIN.checked_abs(), None);Run

🔬 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!(8i128.checked_pow(2), Some(64));
assert_eq!(i128::max_value().checked_pow(2), None);Run

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

Examples

Basic usage:

assert_eq!(100i128.saturating_add(1), 101);
assert_eq!(i128::max_value().saturating_add(100), i128::max_value());Run

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

Examples

Basic usage:

assert_eq!(100i128.saturating_sub(127), -27);
assert_eq!(i128::min_value().saturating_sub(100), i128::min_value());Run

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

Examples

Basic usage:

use std::i128;

assert_eq!(10i128.saturating_mul(12), 120);
assert_eq!(i128::MAX.saturating_mul(10), i128::MAX);
assert_eq!(i128::MIN.saturating_mul(10), i128::MIN);Run

🔬 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::i128;

assert_eq!((-4i128).saturating_pow(3), -64);
assert_eq!(i128::MIN.saturating_pow(2), i128::MAX);
assert_eq!(i128::MIN.saturating_pow(3), i128::MIN);Run

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

Examples

Basic usage:

assert_eq!(100i128.wrapping_add(27), 127);
assert_eq!(i128::max_value().wrapping_add(2), i128::min_value() + 1);Run

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

Examples

Basic usage:

assert_eq!(0i128.wrapping_sub(127), -127);
assert_eq!((-2i128).wrapping_sub(i128::max_value()), i128::max_value());Run

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

Examples

Basic usage:

assert_eq!(10i128.wrapping_mul(12), 120);
assert_eq!(11i8.wrapping_mul(12), -124);Run

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

The only case where such wrapping can occur is when one divides MIN / -1 on a signed type (where MIN is the negative minimal value for the type); this is equivalent to -MIN, a positive value that is too large to represent in the type. In such a case, this function returns MIN itself.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

assert_eq!(100i128.wrapping_div(10), 10);
assert_eq!((-128i8).wrapping_div(-1), -128);Run

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

Wrapping Euclidean division. Computes self.div_euc(rhs), wrapping around at the boundary of the type.

Wrapping will only occur in MIN / -1 on a signed type (where MIN is the negative minimal value for the type). This is equivalent to -MIN, a positive value that is too large to represent in the type. In this case, this method returns MIN itself.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(100i128.wrapping_div_euc(10), 10);
assert_eq!((-128i8).wrapping_div_euc(-1), -128);Run

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

Such wrap-around never actually occurs mathematically; implementation artifacts make x % y invalid for MIN / -1 on a signed type (where MIN is the negative minimal value). In such a case, this function returns 0.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

assert_eq!(100i128.wrapping_rem(10), 0);
assert_eq!((-128i8).wrapping_rem(-1), 0);Run

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

Wrapping Euclidean modulo. Computes self.mod_euc(rhs), wrapping around at the boundary of the type.

Wrapping will only occur in MIN % -1 on a signed type (where MIN is the negative minimal value for the type). In this case, this method returns 0.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

#![feature(euclidean_division)]
assert_eq!(100i128.wrapping_mod_euc(10), 0);
assert_eq!((-128i8).wrapping_mod_euc(-1), 0);Run

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

The only case where such wrapping can occur is when one negates MIN on a signed type (where MIN is the negative minimal value for the type); this is a positive value that is too large to represent in the type. In such a case, this function returns MIN itself.

Examples

Basic usage:

assert_eq!(100i128.wrapping_neg(), -100);
assert_eq!(i128::min_value().wrapping_neg(), i128::min_value());Run

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!((-1i128).wrapping_shl(7), -128);
assert_eq!((-1i128).wrapping_shl(128), -1);Run

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!((-128i128).wrapping_shr(7), -1);
assert_eq!((-128i16).wrapping_shr(64), -128);Run

Wrapping (modular) absolute value. Computes self.abs(), wrapping around at the boundary of the type.

The only case where such wrapping can occur is when one takes the absolute value of the negative minimal value for the type this is a positive value that is too large to represent in the type. In such a case, this function returns MIN itself.

Examples

Basic usage:

assert_eq!(100i128.wrapping_abs(), 100);
assert_eq!((-100i128).wrapping_abs(), 100);
assert_eq!(i128::min_value().wrapping_abs(), i128::min_value());
assert_eq!((-128i8).wrapping_abs() as u8, 128);Run

🔬 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!(3i128.wrapping_pow(4), 81);
assert_eq!(3i8.wrapping_pow(5), -13);
assert_eq!(3i8.wrapping_pow(6), -39);Run

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::i128;

assert_eq!(5i128.overflowing_add(2), (7, false));
assert_eq!(i128::MAX.overflowing_add(1), (i128::MIN, true));Run

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::i128;

assert_eq!(5i128.overflowing_sub(2), (3, false));
assert_eq!(i128::MIN.overflowing_sub(1), (i128::MAX, true));Run

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:

assert_eq!(5i128.overflowing_mul(2), (10, false));
assert_eq!(1_000_000_000i32.overflowing_mul(10), (1410065408, true));Run

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. If an overflow would occur then self is returned.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

use std::i128;

assert_eq!(5i128.overflowing_div(2), (2, false));
assert_eq!(i128::MIN.overflowing_div(-1), (i128::MIN, true));Run

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

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

Returns a tuple of the divisor along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would occur then self is returned.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

#![feature(euclidean_division)]
use std::i128;

assert_eq!(5i128.overflowing_div_euc(2), (2, false));
assert_eq!(i128::MIN.overflowing_div_euc(-1), (i128::MIN, true));Run

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. If an overflow would occur then 0 is returned.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

use std::i128;

assert_eq!(5i128.overflowing_rem(2), (1, false));
assert_eq!(i128::MIN.overflowing_rem(-1), (0, true));Run

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

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

Returns a tuple of the remainder after dividing along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would occur then 0 is returned.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

#![feature(euclidean_division)]
use std::i128;

assert_eq!(5i128.overflowing_mod_euc(2), (1, false));
assert_eq!(i128::MIN.overflowing_mod_euc(-1), (0, true));Run

Negates self, overflowing if this is equal to the minimum value.

Returns a tuple of the negated version of self along with a boolean indicating whether an overflow happened. If self is the minimum value (e.g. i32::MIN for values of type i32), then the minimum value will be returned again and true will be returned for an overflow happening.

Examples

Basic usage:

use std::i128;

assert_eq!(2i128.overflowing_neg(), (-2, false));
assert_eq!(i128::MIN.overflowing_neg(), (i128::MIN, true));Run

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!(0x1i128.overflowing_shl(4), (0x10, false));
assert_eq!(0x1i32.overflowing_shl(36), (0x10, true));Run

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!(0x10i128.overflowing_shr(4), (0x1, false));
assert_eq!(0x10i32.overflowing_shr(36), (0x1, true));Run

Computes the absolute value of self.

Returns a tuple of the absolute version of self along with a boolean indicating whether an overflow happened. If self is the minimum value (e.g. i128::MIN for values of type i128), then the minimum value will be returned again and true will be returned for an overflow happening.

Examples

Basic usage:

assert_eq!(10i128.overflowing_abs(), (10, false));
assert_eq!((-10i128).overflowing_abs(), (10, false));
assert_eq!((i128::min_value()).overflowing_abs(), (i128::min_value(), true));Run

🔬 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!(3i128.overflowing_pow(4), (81, false));
assert_eq!(3i8.overflowing_pow(5), (-13, true));Run

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

Examples

Basic usage:

let x: i128 = 2; // or any other integer type

assert_eq!(x.pow(5), 32);Run

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

Calculates the quotient of Euclidean division of self by rhs.

This computes the integer n such that self = n * rhs + self.mod_euc(rhs). In other words, the result is self / rhs rounded to the integer n such that self >= n * rhs.

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

#![feature(euclidean_division)]
let a: i128 = 7; // or any other integer type
let b = 4;

assert_eq!(a.div_euc(b), 1); // 7 >= 4 * 1
assert_eq!(a.div_euc(-b), -1); // 7 >= -4 * -1
assert_eq!((-a).div_euc(b), -2); // -7 >= 4 * -2
assert_eq!((-a).div_euc(-b), 2); // -7 >= -4 * 2Run

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

Calculates the remainder self mod rhs by Euclidean division.

In particular, the result n satisfies 0 <= n < rhs.abs().

Panics

This function will panic if rhs is 0.

Examples

Basic usage:

#![feature(euclidean_division)]
let a: i128 = 7; // or any other integer type
let b = 4;

assert_eq!(a.mod_euc(b), 3);
assert_eq!((-a).mod_euc(b), 1);
assert_eq!(a.mod_euc(-b), 3);
assert_eq!((-a).mod_euc(-b), 1);Run

Computes the absolute value of self.

Overflow behavior

The absolute value of i128::min_value() cannot be represented as an i128, and attempting to calculate it will cause an overflow. This means that code in debug mode will trigger a panic on this case and optimized code will return i128::min_value() without a panic.

Examples

Basic usage:

assert_eq!(10i128.abs(), 10);
assert_eq!((-10i128).abs(), 10);Run

Returns a number representing sign of self.

  • 0 if the number is zero
  • 1 if the number is positive
  • -1 if the number is negative

Examples

Basic usage:

assert_eq!(10i128.signum(), 1);
assert_eq!(0i128.signum(), 0);
assert_eq!((-10i128).signum(), -1);Run

Returns true if self is positive and false if the number is zero or negative.

Examples

Basic usage:

assert!(10i128.is_positive());
assert!(!(-10i128).is_positive());Run

Returns true if self is negative and false if the number is zero or positive.

Examples

Basic usage:

assert!((-10i128).is_negative());
assert!(!10i128.is_negative());Run

🔬 This is a nightly-only experimental API. (int_to_from_bytes #52963)

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

Examples

#![feature(int_to_from_bytes)]

let bytes = 0x12345678901234567890123456789012i128.to_be_bytes();
assert_eq!(bytes, [0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12]);Run

🔬 This is a nightly-only experimental API. (int_to_from_bytes #52963)

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

Examples

#![feature(int_to_from_bytes)]

let bytes = 0x12345678901234567890123456789012i128.to_le_bytes();
assert_eq!(bytes, [0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]);Run

🔬 This is a nightly-only experimental API. (int_to_from_bytes #52963)

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

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

Examples

#![feature(int_to_from_bytes)]

let bytes = 0x12345678901234567890123456789012i128.to_ne_bytes();
assert_eq!(bytes, if cfg!(target_endian = "big") {
        [0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12]
    } else {
        [0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]
    });Run

🔬 This is a nightly-only experimental API. (int_to_from_bytes #52963)

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

Examples

#![feature(int_to_from_bytes)]

let value = i128::from_be_bytes([0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12]);
assert_eq!(value, 0x12345678901234567890123456789012);Run

🔬 This is a nightly-only experimental API. (int_to_from_bytes #52963)

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

Examples

#![feature(int_to_from_bytes)]

let value = i128::from_le_bytes([0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]);
assert_eq!(value, 0x12345678901234567890123456789012);Run

🔬 This is a nightly-only experimental API. (int_to_from_bytes #52963)

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

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

Examples

#![feature(int_to_from_bytes)]

let value = i128::from_ne_bytes(if cfg!(target_endian = "big") {
        [0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12]
    } else {
        [0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78, 0x56, 0x34, 0x12]
    });
assert_eq!(value, 0x12345678901234567890123456789012);Run

Trait Implementations

impl Clone for i128
1.0.0
[src]

Performs copy-assignment from source. Read more

impl PartialOrd<i128> for i128
1.0.0
[src]

impl LowerHex for i128
1.0.0
[src]

impl<'a> ShlAssign<&'a i16> for i128
1.22.0
[src]

impl ShlAssign<i16> for i128
1.8.0
[src]

impl<'a> ShlAssign<&'a u8> for i128
1.22.0
[src]

impl ShlAssign<usize> for i128
1.8.0
[src]

impl<'a> ShlAssign<&'a u128> for i128
1.22.0
[src]

impl<'a> ShlAssign<&'a u16> for i128
1.22.0
[src]

impl<'a> ShlAssign<&'a i32> for i128
1.22.0
[src]

impl<'a> ShlAssign<&'a u32> for i128
1.22.0
[src]

impl<'a> ShlAssign<&'a i64> for i128
1.22.0
[src]

impl ShlAssign<u8> for i128
1.8.0
[src]

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

impl ShlAssign<isize> for i128
1.8.0
[src]

impl ShlAssign<u128> for i128
1.8.0
[src]

impl ShlAssign<u32> for i128
1.8.0
[src]

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

impl ShlAssign<i128> for i128
1.8.0
[src]

impl<'a> ShlAssign<&'a i8> for i128
1.22.0
[src]

impl ShlAssign<u64> for i128
1.8.0
[src]

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

impl ShlAssign<i64> for i128
1.8.0
[src]

impl<'a> ShlAssign<&'a u64> for i128
1.22.0
[src]

impl ShlAssign<u16> for i128
1.8.0
[src]

impl ShlAssign<i32> for i128
1.8.0
[src]

impl ShlAssign<i8> for i128
1.8.0
[src]

impl<'a> Div<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the / operator.

impl Div<i128> for i128
1.0.0
[src]

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

The resulting type after applying the / operator.

impl<'a, 'b> Div<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the / operator.

impl<'a> Div<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the / operator.

impl Display for i128
1.0.0
[src]

impl BitXorAssign<i128> for i128
1.8.0
[src]

impl<'a> BitXorAssign<&'a i128> for i128
1.22.0
[src]

impl Ord for i128
1.0.0
[src]

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

impl BitOrAssign<i128> for i128
1.8.0
[src]

impl<'a> BitOrAssign<&'a i128> for i128
1.22.0
[src]

impl<'a> BitAndAssign<&'a i128> for i128
1.22.0
[src]

impl BitAndAssign<i128> for i128
1.8.0
[src]

impl Add<i128> for i128
1.0.0
[src]

The resulting type after applying the + operator.

impl<'a, 'b> Add<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the + operator.

impl<'a> Add<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the + operator.

impl<'a> Add<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the + operator.

impl Sum<i128> for i128
1.12.0
[src]

impl<'a> Sum<&'a i128> for i128
1.12.0
[src]

impl Eq for i128
1.0.0
[src]

impl FromStr for i128
1.0.0
[src]

The associated error which can be returned from parsing.

impl Step for i128
[src]

impl PartialEq<i128> for i128
1.0.0
[src]

impl<'a> BitOr<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the | operator.

impl<'a, 'b> BitOr<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the | operator.

impl<'a> BitOr<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the | operator.

impl BitOr<i128> for i128
1.0.0
[src]

The resulting type after applying the | operator.

impl From<u16> for i128
[src]

Converts u16 to i128 losslessly.

impl From<i16> for i128
[src]

Converts i16 to i128 losslessly.

impl From<u8> for i128
[src]

Converts u8 to i128 losslessly.

impl From<u64> for i128
[src]

Converts u64 to i128 losslessly.

impl From<i8> for i128
[src]

Converts i8 to i128 losslessly.

impl From<bool> for i128
1.28.0
[src]

Converts a bool to a i128. The resulting value is 0 for false and 1 for true values.

Examples

assert_eq!(i128::from(true), 1);
assert_eq!(i128::from(false), 0);Run

impl From<i32> for i128
[src]

Converts i32 to i128 losslessly.

impl From<u32> for i128
[src]

Converts u32 to i128 losslessly.

impl From<i64> for i128
[src]

Converts i64 to i128 losslessly.

impl Hash for i128
1.0.0
[src]

impl<'a> RemAssign<&'a i128> for i128
1.22.0
[src]

impl RemAssign<i128> for i128
1.8.0
[src]

impl<'a> DivAssign<&'a i128> for i128
1.22.0
[src]

impl DivAssign<i128> for i128
1.8.0
[src]

impl<'a> MulAssign<&'a i128> for i128
1.22.0
[src]

impl MulAssign<i128> for i128
1.8.0
[src]

impl<'a> SubAssign<&'a i128> for i128
1.22.0
[src]

impl SubAssign<i128> for i128
1.8.0
[src]

impl<'a> AddAssign<&'a i128> for i128
1.22.0
[src]

impl AddAssign<i128> for i128
1.8.0
[src]

impl<'a> Neg for &'a i128
1.0.0
[src]

The resulting type after applying the - operator.

impl Neg for i128
1.0.0
[src]

The resulting type after applying the - operator.

impl ShrAssign<u128> for i128
1.8.0
[src]

impl ShrAssign<u64> for i128
1.8.0
[src]

impl ShrAssign<i16> for i128
1.8.0
[src]

impl<'a> ShrAssign<&'a u128> for i128
1.22.0
[src]

impl<'a> ShrAssign<&'a i16> for i128
1.22.0
[src]

impl<'a> ShrAssign<&'a i32> for i128
1.22.0
[src]

impl<'a> ShrAssign<&'a u8> for i128
1.22.0
[src]

impl<'a> ShrAssign<&'a u16> for i128
1.22.0
[src]

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

impl ShrAssign<i32> for i128
1.8.0
[src]

impl ShrAssign<i128> for i128
1.8.0
[src]

impl<'a> ShrAssign<&'a u32> for i128
1.22.0
[src]

impl<'a> ShrAssign<&'a i64> for i128
1.22.0
[src]

impl<'a> ShrAssign<&'a i8> for i128
1.22.0
[src]

impl ShrAssign<u16> for i128
1.8.0
[src]

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

impl ShrAssign<usize> for i128
1.8.0
[src]

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

impl ShrAssign<i64> for i128
1.8.0
[src]

impl ShrAssign<isize> for i128
1.8.0
[src]

impl ShrAssign<u32> for i128
1.8.0
[src]

impl<'a> ShrAssign<&'a u64> for i128
1.22.0
[src]

impl ShrAssign<i8> for i128
1.8.0
[src]

impl ShrAssign<u8> for i128
1.8.0
[src]

impl Binary for i128
1.0.0
[src]

impl Debug for i128
1.0.0
[src]

impl<'a> Sub<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the - operator.

impl Sub<i128> for i128
1.0.0
[src]

The resulting type after applying the - operator.

impl<'a> Sub<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the - operator.

impl<'a, 'b> Sub<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the - operator.

impl<'a> Shr<usize> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a i16> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<u64> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<u8> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a isize> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a i8> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<i8> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<u128> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<usize> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<i16> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a usize> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<i8> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<isize> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a i32> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<u32> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a u16> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a u8> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a u32> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<i16> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a i16> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<u8> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<u16> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a i64> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<u32> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a i8> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a u16> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<u128> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<u16> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<i128> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a usize> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a u32> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<i64> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a u64> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<i64> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<isize> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a i64> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a isize> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<i32> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a u8> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<i32> for &'a i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a u128> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a u128> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl Shr<u64> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a u64> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a, 'b> Shr<&'a i32> for &'b i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> Shr<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the >> operator.

impl<'a> BitXor<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the ^ operator.

impl<'a, 'b> BitXor<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the ^ operator.

impl<'a> BitXor<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the ^ operator.

impl BitXor<i128> for i128
1.0.0
[src]

The resulting type after applying the ^ operator.

impl Not for i128
1.0.0
[src]

The resulting type after applying the ! operator.

impl<'a> Not for &'a i128
1.0.0
[src]

The resulting type after applying the ! operator.

impl Default for i128
1.0.0
[src]

Returns the default value of 0

impl Copy for i128
1.0.0
[src]

impl UpperHex for i128
1.0.0
[src]

impl Rem<i128> for i128
1.0.0
[src]

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

The resulting type after applying the % operator.

impl<'a, 'b> Rem<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the % operator.

impl<'a> Rem<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the % operator.

impl<'a> Rem<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the % operator.

impl Octal for i128
1.0.0
[src]

impl Mul<i128> for i128
1.0.0
[src]

The resulting type after applying the * operator.

impl<'a, 'b> Mul<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the * operator.

impl<'a> Mul<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the * operator.

impl<'a> Mul<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the * operator.

impl Product<i128> for i128
1.12.0
[src]

impl<'a> Product<&'a i128> for i128
1.12.0
[src]

impl<'a, 'b> Shl<&'a isize> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<i16> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a i32> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a isize> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a u128> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a usize> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<i64> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<usize> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a i64> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<i16> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<u128> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<u32> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<i128> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a u8> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a i64> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a i8> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a i8> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<i32> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<usize> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a u16> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<i128> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<i32> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<u32> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a i128> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a u32> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a u64> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<u128> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<isize> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<u16> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a u32> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<i8> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a u8> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<u64> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<u64> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a i32> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a i16> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<u16> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a u128> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<i64> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a u64> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<u8> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a i16> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<u8> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<&'a i128> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a u16> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a> Shl<isize> for &'a i128
1.0.0
[src]

The resulting type after applying the << operator.

impl Shl<i8> for i128
1.0.0
[src]

The resulting type after applying the << operator.

impl<'a, 'b> Shl<&'a usize> for &'b i128
1.0.0
[src]

The resulting type after applying the << operator.

impl TryFrom<isize> for i128
[src]

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

The type returned in the event of a conversion error.

impl TryFrom<usize> for i128
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl TryFrom<u128> for i128
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl BitAnd<i128> for i128
1.0.0
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The resulting type after applying the & operator.

impl<'a, 'b> BitAnd<&'a i128> for &'b i128
1.0.0
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The resulting type after applying the & operator.

impl<'a> BitAnd<&'a i128> for i128
1.0.0
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The resulting type after applying the & operator.

impl<'a> BitAnd<i128> for &'a i128
1.0.0
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The resulting type after applying the & operator.

impl CastInto<u64> for i128
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impl CastInto<usize> for i128
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impl CastInto<u32> for i128
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impl CastInto<i128> for i128
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impl CastInto<i64> for i128
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impl CastInto<i32> for i128
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impl CastInto<isize> for i128
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impl CastInto<u128> for i128
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impl Int for i128
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🔬 This is a nightly-only experimental API. (compiler_builtins_lib)

Compiler builtins. Will never become stable.

Type with the same width but other signedness

🔬 This is a nightly-only experimental API. (compiler_builtins_lib)

Compiler builtins. Will never become stable.

Unsigned version of Self

impl LargeInt for i128
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🔬 This is a nightly-only experimental API. (compiler_builtins_lib)

Compiler builtins. Will never become stable.

🔬 This is a nightly-only experimental API. (compiler_builtins_lib)

Compiler builtins. Will never become stable.

Auto Trait Implementations

impl Send for i128

impl Sync for i128

Blanket Implementations

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

impl<T> From for T
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.

impl<T, U> Into for T where
    U: From<T>, 
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impl<T> Borrow for T where
    T: ?Sized
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impl<T> BorrowMut for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> ToOwned for T where
    T: Clone
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impl<T> ToString for T where
    T: Display + ?Sized
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