Struct sp_std::num::NonZeroIsize

1.34.0 · source ·
#[repr(transparent)]
pub struct NonZeroIsize(_);
Expand description

An integer that is known not to equal zero.

This enables some memory layout optimization. For example, Option<NonZeroIsize> is the same size as isize:

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

Layout

NonZeroIsize is guaranteed to have the same layout and bit validity as isize with the exception that 0 is not a valid instance. Option<NonZeroIsize> is guaranteed to be compatible with isize, including in FFI.

Implementations§

source§

impl NonZeroIsize

const: 1.34.0 · source

pub const unsafe fn new_unchecked(n: isize) -> NonZeroIsize

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: isize) -> Option<NonZeroIsize>

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

const: 1.34.0 · source

pub const fn get(self) -> isize

Returns the value as a primitive type.

source§

impl NonZeroIsize

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::NonZeroIsize::new(-1isize).unwrap();

assert_eq!(n.leading_zeros(), 0);
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::NonZeroIsize::new(0b0101000).unwrap();

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

impl NonZeroIsize

1.64.0 (const: 1.64.0) · source

pub const fn abs(self) -> NonZeroIsize

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

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

assert_eq!(pos, pos.abs());
assert_eq!(pos, neg.abs());
1.64.0 (const: 1.64.0) · source

pub const fn checked_abs(self) -> Option<NonZeroIsize>

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

Example
let pos = NonZeroIsize::new(1)?;
let neg = NonZeroIsize::new(-1)?;
let min = NonZeroIsize::new(isize::MIN)?;

assert_eq!(Some(pos), neg.checked_abs());
assert_eq!(None, min.checked_abs());
1.64.0 (const: 1.64.0) · source

pub const fn overflowing_abs(self) -> (NonZeroIsize, bool)

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

Example
let pos = NonZeroIsize::new(1)?;
let neg = NonZeroIsize::new(-1)?;
let min = NonZeroIsize::new(isize::MIN)?;

assert_eq!((pos, false), pos.overflowing_abs());
assert_eq!((pos, false), neg.overflowing_abs());
assert_eq!((min, true), min.overflowing_abs());
1.64.0 (const: 1.64.0) · source

pub const fn saturating_abs(self) -> NonZeroIsize

Saturating absolute value, see isize::saturating_abs.

Example
let pos = NonZeroIsize::new(1)?;
let neg = NonZeroIsize::new(-1)?;
let min = NonZeroIsize::new(isize::MIN)?;
let min_plus = NonZeroIsize::new(isize::MIN + 1)?;
let max = NonZeroIsize::new(isize::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());
1.64.0 (const: 1.64.0) · source

pub const fn wrapping_abs(self) -> NonZeroIsize

Wrapping absolute value, see isize::wrapping_abs.

Example
let pos = NonZeroIsize::new(1)?;
let neg = NonZeroIsize::new(-1)?;
let min = NonZeroIsize::new(isize::MIN)?;

assert_eq!(pos, pos.wrapping_abs());
assert_eq!(pos, neg.wrapping_abs());
assert_eq!(min, min.wrapping_abs());
assert_eq!(max, (-max).wrapping_abs());
1.64.0 (const: 1.64.0) · source

pub const fn unsigned_abs(self) -> NonZeroUsize

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

Example

let u_pos = NonZeroUsize::new(1)?;
let i_pos = NonZeroIsize::new(1)?;
let i_neg = NonZeroIsize::new(-1)?;
let i_min = NonZeroIsize::new(isize::MIN)?;
let u_max = NonZeroUsize::new(usize::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());
1.71.0 (const: 1.71.0) · source

pub const fn is_positive(self) -> bool

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

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

assert!(pos_five.is_positive());
assert!(!neg_five.is_positive());
1.71.0 (const: 1.71.0) · source

pub const fn is_negative(self) -> bool

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

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

assert!(neg_five.is_negative());
assert!(!pos_five.is_negative());
1.71.0 (const: 1.71.0) · source

pub const fn checked_neg(self) -> Option<NonZeroIsize>

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

Example
let pos_five = NonZeroIsize::new(5)?;
let neg_five = NonZeroIsize::new(-5)?;
let min = NonZeroIsize::new(isize::MIN)?;

assert_eq!(pos_five.checked_neg(), Some(neg_five));
assert_eq!(min.checked_neg(), None);
1.71.0 (const: 1.71.0) · source

pub const fn overflowing_neg(self) -> (NonZeroIsize, bool)

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

See isize::overflowing_neg for documentation on overflow behaviour.

Example
let pos_five = NonZeroIsize::new(5)?;
let neg_five = NonZeroIsize::new(-5)?;
let min = NonZeroIsize::new(isize::MIN)?;

assert_eq!(pos_five.overflowing_neg(), (neg_five, false));
assert_eq!(min.overflowing_neg(), (min, true));
1.71.0 (const: 1.71.0) · source

pub const fn saturating_neg(self) -> NonZeroIsize

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

Example
let pos_five = NonZeroIsize::new(5)?;
let neg_five = NonZeroIsize::new(-5)?;
let min = NonZeroIsize::new(isize::MIN)?;
let min_plus_one = NonZeroIsize::new(isize::MIN + 1)?;
let max = NonZeroIsize::new(isize::MAX)?;

assert_eq!(pos_five.saturating_neg(), neg_five);
assert_eq!(min.saturating_neg(), max);
assert_eq!(max.saturating_neg(), min_plus_one);
1.71.0 (const: 1.71.0) · source

pub const fn wrapping_neg(self) -> NonZeroIsize

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

See isize::wrapping_neg for documentation on overflow behaviour.

Example
let pos_five = NonZeroIsize::new(5)?;
let neg_five = NonZeroIsize::new(-5)?;
let min = NonZeroIsize::new(isize::MIN)?;

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

impl NonZeroIsize

1.64.0 (const: 1.64.0) · source

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

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 = NonZeroIsize::new(2)?;
let four = NonZeroIsize::new(4)?;
let max = NonZeroIsize::new(isize::MAX)?;

assert_eq!(Some(four), two.checked_mul(two));
assert_eq!(None, max.checked_mul(two));
1.64.0 (const: 1.64.0) · source

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

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

Examples
let two = NonZeroIsize::new(2)?;
let four = NonZeroIsize::new(4)?;
let max = NonZeroIsize::new(isize::MAX)?;

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

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

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

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 > isize::MAX, or self * rhs < isize::MIN.

Examples
#![feature(nonzero_ops)]

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

assert_eq!(four, unsafe { two.unchecked_mul(two) });
1.64.0 (const: 1.64.0) · source

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

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 = NonZeroIsize::new(3)?;
let twenty_seven = NonZeroIsize::new(27)?;
let half_max = NonZeroIsize::new(isize::MAX / 2)?;

assert_eq!(Some(twenty_seven), three.checked_pow(3));
assert_eq!(None, half_max.checked_pow(3));
1.64.0 (const: 1.64.0) · source

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

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

Examples
let three = NonZeroIsize::new(3)?;
let twenty_seven = NonZeroIsize::new(27)?;
let max = NonZeroIsize::new(isize::MAX)?;

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

impl NonZeroIsize

1.70.0 · source

pub const MIN: NonZeroIsize = Self::new(isize::MIN).unwrap()

The smallest value that can be represented by this non-zero integer type, equal to isize::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
assert_eq!(NonZeroIsize::MIN.get(), isize::MIN);
1.70.0 · source

pub const MAX: NonZeroIsize = Self::new(isize::MAX).unwrap()

The largest value that can be represented by this non-zero integer type, equal to isize::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
assert_eq!(NonZeroIsize::MAX.get(), isize::MAX);
source§

impl NonZeroIsize

1.67.0 · source

pub const BITS: u32 = 64u32

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

This value is equal to isize::BITS.

Examples

assert_eq!(NonZeroIsize::BITS, isize::BITS);

Trait Implementations§

source§

impl Binary for NonZeroIsize

source§

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

Formats the value using the given formatter.
1.45.0 · source§

impl BitOr<NonZeroIsize> for NonZeroIsize

§

type Output = NonZeroIsize

The resulting type after applying the | operator.
source§

fn bitor( self, rhs: NonZeroIsize ) -> <NonZeroIsize as BitOr<NonZeroIsize>>::Output

Performs the | operation. Read more
1.45.0 · source§

impl BitOr<NonZeroIsize> for isize

§

type Output = NonZeroIsize

The resulting type after applying the | operator.
source§

fn bitor(self, rhs: NonZeroIsize) -> <isize as BitOr<NonZeroIsize>>::Output

Performs the | operation. Read more
1.45.0 · source§

impl BitOr<isize> for NonZeroIsize

§

type Output = NonZeroIsize

The resulting type after applying the | operator.
source§

fn bitor(self, rhs: isize) -> <NonZeroIsize as BitOr<isize>>::Output

Performs the | operation. Read more
1.45.0 · source§

impl BitOrAssign<NonZeroIsize> for NonZeroIsize

source§

fn bitor_assign(&mut self, rhs: NonZeroIsize)

Performs the |= operation. Read more
1.45.0 · source§

impl BitOrAssign<isize> for NonZeroIsize

source§

fn bitor_assign(&mut self, rhs: isize)

Performs the |= operation. Read more
source§

impl Clone for NonZeroIsize

source§

fn clone(&self) -> NonZeroIsize

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 NonZeroIsize

source§

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

Formats the value using the given formatter. Read more
source§

impl Display for NonZeroIsize

source§

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

Formats the value using the given formatter. Read more
1.41.0 · source§

impl From<NonZeroI16> for NonZeroIsize

source§

fn from(small: NonZeroI16) -> NonZeroIsize

Converts NonZeroI16 to NonZeroIsize losslessly.

1.41.0 · source§

impl From<NonZeroI8> for NonZeroIsize

source§

fn from(small: NonZeroI8) -> NonZeroIsize

Converts NonZeroI8 to NonZeroIsize losslessly.

1.31.0 · source§

impl From<NonZeroIsize> for isize

source§

fn from(nonzero: NonZeroIsize) -> isize

Converts a NonZeroIsize into an isize

1.41.0 · source§

impl From<NonZeroU8> for NonZeroIsize

source§

fn from(small: NonZeroU8) -> NonZeroIsize

Converts NonZeroU8 to NonZeroIsize losslessly.

1.35.0 · source§

impl FromStr for NonZeroIsize

§

type Err = ParseIntError

The associated error which can be returned from parsing.
source§

fn from_str(src: &str) -> Result<NonZeroIsize, <NonZeroIsize as FromStr>::Err>

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

impl Hash for NonZeroIsize

source§

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

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

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

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

impl LowerHex for NonZeroIsize

source§

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

Formats the value using the given formatter.
1.71.0 · source§

impl Neg for &NonZeroIsize

§

type Output = <NonZeroIsize as Neg>::Output

The resulting type after applying the - operator.
source§

fn neg(self) -> <NonZeroIsize as Neg>::Output

Performs the unary - operation. Read more
1.71.0 · source§

impl Neg for NonZeroIsize

§

type Output = NonZeroIsize

The resulting type after applying the - operator.
source§

fn neg(self) -> NonZeroIsize

Performs the unary - operation. Read more
source§

impl Octal for NonZeroIsize

source§

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

Formats the value using the given formatter.
source§

impl Ord for NonZeroIsize

source§

fn cmp(&self, other: &NonZeroIsize) -> 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 + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
source§

impl PartialEq<NonZeroIsize> for NonZeroIsize

source§

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

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

impl PartialOrd<NonZeroIsize> for NonZeroIsize

source§

fn partial_cmp(&self, other: &NonZeroIsize) -> 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 NonZeroIsize

source§

fn try_from( value: NonZeroI128 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI128>>::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<NonZeroI32> for NonZeroIsize

source§

fn try_from( value: NonZeroI32 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI32>>::Error>

Attempts to convert NonZeroI32 to NonZeroIsize.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroI64> for NonZeroIsize

source§

fn try_from( value: NonZeroI64 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI64>>::Error>

Attempts to convert NonZeroI64 to NonZeroIsize.

§

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<NonZeroI128, <NonZeroI128 as TryFrom<NonZeroIsize>>::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<NonZeroIsize> for NonZeroI16

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroI16.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroI32

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroI32.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroI64

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroI64, <NonZeroI64 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroI64.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroI8

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroI8.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroU128

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroU128.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroU16

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroU16.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroU32

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroU32.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroU64

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroU64.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroU8

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroU8.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroIsize> for NonZeroUsize

source§

fn try_from( value: NonZeroIsize ) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroIsize>>::Error>

Attempts to convert NonZeroIsize to NonZeroUsize.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroU128> for NonZeroIsize

source§

fn try_from( value: NonZeroU128 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU128>>::Error>

Attempts to convert NonZeroU128 to NonZeroIsize.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroU16> for NonZeroIsize

source§

fn try_from( value: NonZeroU16 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU16>>::Error>

Attempts to convert NonZeroU16 to NonZeroIsize.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroU32> for NonZeroIsize

source§

fn try_from( value: NonZeroU32 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU32>>::Error>

Attempts to convert NonZeroU32 to NonZeroIsize.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroU64> for NonZeroIsize

source§

fn try_from( value: NonZeroU64 ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU64>>::Error>

Attempts to convert NonZeroU64 to NonZeroIsize.

§

type Error = TryFromIntError

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

impl TryFrom<NonZeroUsize> for NonZeroIsize

source§

fn try_from( value: NonZeroUsize ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroUsize>>::Error>

Attempts to convert NonZeroUsize to NonZeroIsize.

§

type Error = TryFromIntError

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

impl TryFrom<isize> for NonZeroIsize

source§

fn try_from( value: isize ) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<isize>>::Error>

Attempts to convert isize to NonZeroIsize.

§

type Error = TryFromIntError

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

impl UpperHex for NonZeroIsize

source§

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

Formats the value using the given formatter.
source§

impl Copy for NonZeroIsize

source§

impl Eq for NonZeroIsize

source§

impl StructuralEq for NonZeroIsize

source§

impl StructuralPartialEq for NonZeroIsize

Auto Trait Implementations§

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,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

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> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T> ToString for Twhere T: Display + ?Sized,

source§

default fn to_string(&self) -> String

Converts the given value to a String. Read more
source§

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

§

type Error = Infallible

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

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

Performs the conversion.