Struct nonzero_signed::NonZeroIsize

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

Deprecated since 1.0.3:

These became part of std::num in Rust 1.34, please use the std types instead of this crate.

An integer that is known not to equal zero.

This enables some memory layout optimization. For example, Option<NonZeroI32> is the same size as i32:

use std::mem::size_of;
use nonzero_signed::NonZeroI32;
assert_eq!(size_of::<Option<NonZeroI32>>(), size_of::<i32>());

Methods

impl NonZeroIsize

pub unsafe fn new_unchecked(n: isize) -> Self

Create a non-zero without checking the value.

Safety

The value must not be zero.

pub fn new(n: isize) -> Option<Self>

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

pub fn get(self) -> isize

Returns the value as a primitive type.

Trait Implementations

impl Copy for NonZeroIsize

impl PartialEq<NonZeroIsize> for NonZeroIsize

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

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

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

This method tests for !=.

impl Clone for NonZeroIsize

fn clone(&self) -> NonZeroIsize

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for NonZeroIsize

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl Eq for NonZeroIsize

impl PartialOrd<NonZeroIsize> for NonZeroIsize

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

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

#[must_use]

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

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

#[must_use]

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

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

#[must_use]

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

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

#[must_use]

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

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

impl Display for NonZeroIsize

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

Formats the value using the given formatter.

impl Debug for NonZeroIsize

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

Formats the value using the given formatter.

impl Hash for NonZeroIsize

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

Feeds this value into the given [Hasher].

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

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

impl Octal for NonZeroIsize

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

Formats the value using the given formatter.

impl Binary for NonZeroIsize

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

Formats the value using the given formatter.

impl LowerHex for NonZeroIsize

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

Formats the value using the given formatter.

impl UpperHex for NonZeroIsize

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

Formats the value using the given formatter.