# Struct core::num::NonZeroI128

1.34.0 · source ·

    #[repr(transparent)]pub struct NonZeroI128(_);

Expand description

An integer that is known not to equal zero.

This enables some memory layout optimization. For example, `Option<NonZeroI128>` is the same size as `i128`:

    use std::mem::size_of;
    assert_eq!(size_of::<Option<core::num::NonZeroI128>>(), size_of::<i128>());

Run

## Implementations

source

### impl NonZeroI128

const: 1.34.0 · source

#### pub const unsafe fn new_unchecked(n: i128) -> Self

Creates a non-zero without checking whether the value is non-zero. This results in undefined behaviour if the value is zero.

##### Safety

The value must not be zero.

const: 1.47.0 · source

#### pub const fn new(n: i128) -> Option<Self>

Creates a non-zero if the given value is not zero.

const: 1.34.0 · source

#### pub const fn get(self) -> i128

Returns the value as a primitive type.

source

### impl NonZeroI128

1.53.0 (const: 1.53.0) · source

#### pub const fn leading_zeros(self) -> u32

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

On many architectures, this function can perform better than `leading_zeros()` on the underlying integer type, as special handling of zero can be avoided.

##### Examples

Basic usage:

    let n = std::num::NonZeroI128::new(-1i128).unwrap();

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

Run
1.53.0 (const: 1.53.0) · source

#### pub const fn trailing_zeros(self) -> u32

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

On many architectures, this function can perform better than `trailing_zeros()` on the underlying integer type, as special handling of zero can be avoided.

##### Examples

Basic usage:

    let n = std::num::NonZeroI128::new(0b0101000).unwrap();

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

Run
source

### impl NonZeroI128

1.64.0 (const: 1.64.0) · source

#### pub const fn abs(self) -> NonZeroI128

Computes the absolute value of self. See `i128::abs` for documentation on overflow behaviour.

##### Example

    let pos = NonZeroI128::new(1)?;
    let neg = NonZeroI128::new(-1)?;

    assert_eq!(pos, pos.abs());
    assert_eq!(pos, neg.abs());

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn checked_abs(self) -> Option<NonZeroI128>

Checked absolute value. Checks for overflow and returns `None` if `self == i128::MIN`. The result cannot be zero.

##### Example

    let pos = NonZeroI128::new(1)?;
    let neg = NonZeroI128::new(-1)?;
    let min = NonZeroI128::new(i128::MIN)?;

    assert_eq!(Some(pos), neg.checked_abs());
    assert_eq!(None, min.checked_abs());

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn overflowing_abs(self) -> (NonZeroI128, bool)

Computes the absolute value of self, with overflow information, see `i128::overflowing_abs`.

##### Example

    let pos = NonZeroI128::new(1)?;
    let neg = NonZeroI128::new(-1)?;
    let min = NonZeroI128::new(i128::MIN)?;

    assert_eq!((pos, false), pos.overflowing_abs());
    assert_eq!((pos, false), neg.overflowing_abs());
    assert_eq!((min, true), min.overflowing_abs());

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn saturating_abs(self) -> NonZeroI128

Saturating absolute value, see `i128::saturating_abs`.

##### Example

    let pos = NonZeroI128::new(1)?;
    let neg = NonZeroI128::new(-1)?;
    let min = NonZeroI128::new(i128::MIN)?;
    let min_plus = NonZeroI128::new(i128::MIN + 1)?;
    let max = NonZeroI128::new(i128::MAX)?;

    assert_eq!(pos, pos.saturating_abs());
    assert_eq!(pos, neg.saturating_abs());
    assert_eq!(max, min.saturating_abs());
    assert_eq!(max, min_plus.saturating_abs());

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn wrapping_abs(self) -> NonZeroI128

Wrapping absolute value, see `i128::wrapping_abs`.

##### Example

    let pos = NonZeroI128::new(1)?;
    let neg = NonZeroI128::new(-1)?;
    let min = NonZeroI128::new(i128::MIN)?;

    assert_eq!(pos, pos.wrapping_abs());
    assert_eq!(pos, neg.wrapping_abs());
    assert_eq!(min, min.wrapping_abs());

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn unsigned_abs(self) -> NonZeroU128

Computes the absolute value of self without any wrapping or panicking.

##### Example

    let u_pos = NonZeroU128::new(1)?;
    let i_pos = NonZeroI128::new(1)?;
    let i_neg = NonZeroI128::new(-1)?;
    let i_min = NonZeroI128::new(i128::MIN)?;
    let u_max = NonZeroU128::new(u128::MAX / 2 + 1)?;

    assert_eq!(u_pos, i_pos.unsigned_abs());
    assert_eq!(u_pos, i_neg.unsigned_abs());
    assert_eq!(u_max, i_min.unsigned_abs());

Run
source

#### pub const fn is_negative(self) -> bool

🔬This is a nightly-only experimental API. (`nonzero_negation_ops` #102443)

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

##### Example

    #![feature(nonzero_negation_ops)]

    let pos_five = NonZeroI128::new(5)?;
    let neg_five = NonZeroI128::new(-5)?;

    assert!(neg_five.is_negative());
    assert!(!pos_five.is_negative());

Run
source

#### pub const fn checked_neg(self) -> Option<NonZeroI128>

🔬This is a nightly-only experimental API. (`nonzero_negation_ops` #102443)

Checked negation. Computes `-self`, returning `None` if `self == i32::MIN`.

##### Example

    #![feature(nonzero_negation_ops)]

    let pos_five = NonZeroI128::new(5)?;
    let neg_five = NonZeroI128::new(-5)?;
    let min = NonZeroI128::new(i128::MIN)?;

    assert_eq!(pos_five.checked_neg(), Some(neg_five));
    assert_eq!(min.checked_neg(), None);

Run
source

#### pub const fn overflowing_neg(self) -> (NonZeroI128, bool)

🔬This is a nightly-only experimental API. (`nonzero_negation_ops` #102443)

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

See `i128::overflowing_neg` for documentation on overflow behaviour.

##### Example

    #![feature(nonzero_negation_ops)]

    let pos_five = NonZeroI128::new(5)?;
    let neg_five = NonZeroI128::new(-5)?;
    let min = NonZeroI128::new(i128::MIN)?;

    assert_eq!(pos_five.overflowing_neg(), (neg_five, false));
    assert_eq!(min.overflowing_neg(), (min, true));

Run
source

#### pub const fn saturating_neg(self) -> NonZeroI128

🔬This is a nightly-only experimental API. (`nonzero_negation_ops` #102443)

Saturating negation. Computes `-self`, returning `MAX` if `self == i32::MIN` instead of overflowing.

##### Example

    #![feature(nonzero_negation_ops)]

    let pos_five = NonZeroI128::new(5)?;
    let neg_five = NonZeroI128::new(-5)?;
    let min = NonZeroI128::new(i128::MIN)?;
    let min_plus_one = NonZeroI128::new(i128::MIN + 1)?;
    let max = NonZeroI128::new(i128::MAX)?;

    assert_eq!(pos_five.saturating_neg(), neg_five);
    assert_eq!(min.saturating_neg(), max);
    assert_eq!(max.saturating_neg(), min_plus_one);

Run
source

#### pub const fn wrapping_neg(self) -> NonZeroI128

🔬This is a nightly-only experimental API. (`nonzero_negation_ops` #102443)

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

See `i128::wrapping_neg` for documentation on overflow behaviour.

##### Example

    #![feature(nonzero_negation_ops)]

    let pos_five = NonZeroI128::new(5)?;
    let neg_five = NonZeroI128::new(-5)?;
    let min = NonZeroI128::new(i128::MIN)?;

    assert_eq!(pos_five.wrapping_neg(), neg_five);
    assert_eq!(min.wrapping_neg(), min);

Run
source

### impl NonZeroI128

1.64.0 (const: 1.64.0) · source

#### pub const fn checked_mul(self, other: NonZeroI128) -> Option<NonZeroI128>

Multiplies two non-zero integers together. Checks for overflow and returns `None` on overflow. As a consequence, the result cannot wrap to zero.

##### Examples

    let two = NonZeroI128::new(2)?;
    let four = NonZeroI128::new(4)?;
    let max = NonZeroI128::new(i128::MAX)?;

    assert_eq!(Some(four), two.checked_mul(two));
    assert_eq!(None, max.checked_mul(two));

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn saturating_mul(self, other: NonZeroI128) -> NonZeroI128

Multiplies two non-zero integers together. Return `i128::MAX` on overflow.

##### Examples

    let two = NonZeroI128::new(2)?;
    let four = NonZeroI128::new(4)?;
    let max = NonZeroI128::new(i128::MAX)?;

    assert_eq!(four, two.saturating_mul(two));
    assert_eq!(max, four.saturating_mul(max));

Run
source

#### pub const unsafe fn unchecked_mul(self, other: NonZeroI128) -> NonZeroI128

🔬This is a nightly-only experimental API. (`nonzero_ops` #84186)

Multiplies two non-zero integers together, assuming overflow cannot occur. Overflow is unchecked, and it is undefined behaviour to overflow even if the result would wrap to a non-zero value. The behaviour is undefined as soon as `self * rhs > i128::MAX`, or `self * rhs < i128::MIN`.

##### Examples

    #![feature(nonzero_ops)]

    let two = NonZeroI128::new(2)?;
    let four = NonZeroI128::new(4)?;

    assert_eq!(four, unsafe { two.unchecked_mul(two) });

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn checked_pow(self, other: u32) -> Option<NonZeroI128>

Raises non-zero value to an integer power. Checks for overflow and returns `None` on overflow. As a consequence, the result cannot wrap to zero.

##### Examples

    let three = NonZeroI128::new(3)?;
    let twenty_seven = NonZeroI128::new(27)?;
    let half_max = NonZeroI128::new(i128::MAX / 2)?;

    assert_eq!(Some(twenty_seven), three.checked_pow(3));
    assert_eq!(None, half_max.checked_pow(3));

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn saturating_pow(self, other: u32) -> NonZeroI128

Raise non-zero value to an integer power. Return `i128::MIN` or `i128::MAX` on overflow.

##### Examples

    let three = NonZeroI128::new(3)?;
    let twenty_seven = NonZeroI128::new(27)?;
    let max = NonZeroI128::new(i128::MAX)?;

    assert_eq!(twenty_seven, three.saturating_pow(3));
    assert_eq!(max, max.saturating_pow(3));

Run
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### impl NonZeroI128

source

#### pub const MIN: Self = _

🔬This is a nightly-only experimental API. (`nonzero_min_max` #89065)

The smallest value that can be represented by this non-zero integer type, equal to `i128::MIN`.

Note: While most integer types are defined for every whole number between `MIN` and `MAX`, signed non-zero integers are a special case. They have a “gap” at 0.

##### Examples

    #![feature(nonzero_min_max)]

    assert_eq!(NonZeroI128::MIN.get(), i128::MIN);

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#### pub const MAX: Self = _

🔬This is a nightly-only experimental API. (`nonzero_min_max` #89065)

The largest value that can be represented by this non-zero integer type, equal to `i128::MAX`.

Note: While most integer types are defined for every whole number between `MIN` and `MAX`, signed non-zero integers are a special case. They have a “gap” at 0.

##### Examples

    #![feature(nonzero_min_max)]

    assert_eq!(NonZeroI128::MAX.get(), i128::MAX);

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source

### impl NonZeroI128

source

#### pub const BITS: u32 = 128u32

🔬This is a nightly-only experimental API. (`nonzero_bits` #94881)

The size of this non-zero integer type in bits.

This value is equal to `i128::BITS`.

##### Examples

    #![feature(nonzero_bits)]

    assert_eq!(NonZeroI128::BITS, i128::BITS);

Run

## Trait Implementations

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### impl Binary for NonZeroI128

source

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
1.45.0 (const: unstable) · source

### impl BitOr<NonZeroI128> for NonZeroI128

#### type Output = NonZeroI128

The resulting type after applying the `|` operator.
const: unstable · source

#### fn bitor(self, rhs: Self) -> Self::Output

Performs the `|` operation. Read more
1.45.0 (const: unstable) · source

### impl BitOr<NonZeroI128> for i128

#### type Output = NonZeroI128

The resulting type after applying the `|` operator.
const: unstable · source

#### fn bitor(self, rhs: NonZeroI128) -> Self::Output

Performs the `|` operation. Read more
1.45.0 (const: unstable) · source

### impl BitOr<i128> for NonZeroI128

#### type Output = NonZeroI128

The resulting type after applying the `|` operator.
const: unstable · source

#### fn bitor(self, rhs: i128) -> Self::Output

Performs the `|` operation. Read more
1.45.0 (const: unstable) · source

### impl BitOrAssign<NonZeroI128> for NonZeroI128

const: unstable · source

#### fn bitor_assign(&mut self, rhs: Self)

Performs the `|=` operation. Read more
1.45.0 (const: unstable) · source

### impl BitOrAssign<i128> for NonZeroI128

const: unstable · source

#### fn bitor_assign(&mut self, rhs: i128)

Performs the `|=` operation. Read more
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### impl Clone for NonZeroI128

source

#### fn clone(&self) -> NonZeroI128

Returns a copy of the value. Read more
1.0.0 · source

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

Performs copy-assignment from `source`. Read more
source

### impl Debug for NonZeroI128

source

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
source

### impl Display for NonZeroI128

source

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
1.31.0 (const: unstable) · source

### impl From<NonZeroI128> for i128

const: unstable · source

#### fn from(nonzero: NonZeroI128) -> Self

Converts a `NonZeroI128` into an `i128`

1.41.0 (const: unstable) · source

### impl From<NonZeroI16> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroI16) -> Self

Converts `NonZeroI16` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroI32> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroI32) -> Self

Converts `NonZeroI32` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroI64> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroI64) -> Self

Converts `NonZeroI64` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroI8> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroI8) -> Self

Converts `NonZeroI8` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroU16> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroU16) -> Self

Converts `NonZeroU16` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroU32> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroU32) -> Self

Converts `NonZeroU32` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroU64> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroU64) -> Self

Converts `NonZeroU64` to `NonZeroI128` losslessly.

1.41.0 (const: unstable) · source

### impl From<NonZeroU8> for NonZeroI128

const: unstable · source

#### fn from(small: NonZeroU8) -> Self

Converts `NonZeroU8` to `NonZeroI128` losslessly.

1.35.0 · source

### impl FromStr for NonZeroI128

#### type Err = ParseIntError

The associated error which can be returned from parsing.
source

#### fn from_str(src: &str) -> Result<Self, Self::Err>

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

### impl Hash for NonZeroI128

source

#### fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given `Hasher`. Read more
1.3.0 · source

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

Feeds a slice of this type into the given `Hasher`. Read more
source

### impl LowerHex for NonZeroI128

source

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
source

### impl Octal for NonZeroI128

source

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
source

### impl Ord for NonZeroI128

source

#### fn cmp(&self, other: &NonZeroI128) -> Ordering

This method returns an `Ordering` between `self` and `other`. Read more
1.21.0 · source

#### fn max(self, other: Self) -> Selfwhere
Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source

#### fn min(self, other: Self) -> Selfwhere
Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source

#### fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: Sized,
Self: PartialOrd,

Restrict a value to a certain interval. Read more
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### impl PartialEq<NonZeroI128> for NonZeroI128

source

#### fn eq(&self, other: &NonZeroI128) -> bool

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

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

This method tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more
source

### impl PartialOrd<NonZeroI128> for NonZeroI128

source

#### fn partial_cmp(&self, other: &NonZeroI128) -> Option<Ordering>

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

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

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

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

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

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

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

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

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

### impl TryFrom<NonZeroI128> for NonZeroI16

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroI16`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroI32

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroI32`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroI64

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroI64`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroI8

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroI8`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroIsize

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroIsize`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroU128

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroU128`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroU16

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroU16`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroU32

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroU32`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroU64

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroU64`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroU8

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroU8`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroI128> for NonZeroUsize

source

#### fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroI128` to `NonZeroUsize`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroIsize> for NonZeroI128

source

#### fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>

Attempts to convert `NonZeroIsize` to `NonZeroI128`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroU128> for NonZeroI128

source

#### fn try_from(value: NonZeroU128) -> Result<Self, Self::Error>

Attempts to convert `NonZeroU128` to `NonZeroI128`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source

### impl TryFrom<NonZeroUsize> for NonZeroI128

source

#### fn try_from(value: NonZeroUsize) -> Result<Self, Self::Error>

Attempts to convert `NonZeroUsize` to `NonZeroI128`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.46.0 · source

### impl TryFrom<i128> for NonZeroI128

source

#### fn try_from(value: i128) -> Result<Self, Self::Error>

Attempts to convert `i128` to `NonZeroI128`.

#### type Error = TryFromIntError

The type returned in the event of a conversion error.
source

### impl UpperHex for NonZeroI128

source

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.
source

### impl Copy for NonZeroI128

source

### impl Eq for NonZeroI128

source

### impl StructuralEq for NonZeroI128

source

### impl StructuralPartialEq for NonZeroI128

## Auto Trait Implementations

### impl RefUnwindSafe for NonZeroI128

### impl Send for NonZeroI128

### impl Sync for NonZeroI128

### impl Unpin for NonZeroI128

### impl UnwindSafe for NonZeroI128

## Blanket Implementations

source

### impl<T> Any for Twhere
T: 'static + ?Sized,

source

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
source

### impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source

### impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

const: unstable · source

#### fn from(t: T) -> T

Returns the argument unchanged.

source

### impl<T, U> Into<U> for Twhere
U: From<T>,

const: unstable · source

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

source

### impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

#### type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source

### impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.