Struct std::num::NonZeroU32

[+] Show type declaration

pub struct NonZeroU32(_);

🔬 This is a nightly-only experimental API. (nonzero #49137)

[−] Expand description

An integer that is known not to equal zero.

This may enable some memory layout optimization such as:

use std::mem::size_of;
assert_eq!(size_of::<Option<std::num::NonZeroU32>>(), size_of::<u32>());

Methods

impl NonZeroU32

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pub const unsafe fn new_unchecked(n: u32) -> NonZeroU32

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🔬 This is a nightly-only experimental API. (nonzero #49137)

Create a non-zero without checking the value.

Safety

The value must not be zero.

pub fn new(n: u32) -> Option<NonZeroU32>

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🔬 This is a nightly-only experimental API. (nonzero #49137)

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

pub fn get(self) -> u32

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🔬 This is a nightly-only experimental API. (nonzero #49137)

Returns the value as a primitive type.

Trait Implementations

impl Copy for NonZeroU32

impl Binary for NonZeroU32

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

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Formats the value using the given formatter.

impl Debug for NonZeroU32

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

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Formats the value using the given formatter.

impl Ord for NonZeroU32

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fn cmp(&self, __arg_0: &NonZeroU32) -> Ordering

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This method returns an Ordering between self and other.

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

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Compares and returns the maximum of two values.

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

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Compares and returns the minimum of two values.

impl Hash for NonZeroU32

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fn hash<__H>(&self, __arg_0: &mut __H) where     __H: Hasher,

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Feeds this value into the given [Hasher].

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

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

impl PartialEq<NonZeroU32> for NonZeroU32

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fn eq(&self, __arg_0: &NonZeroU32) -> bool

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

fn ne(&self, __arg_0: &NonZeroU32) -> bool

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This method tests for !=.

impl LowerHex for NonZeroU32

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

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Formats the value using the given formatter.

impl Display for NonZeroU32

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

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Formats the value using the given formatter.

impl UpperHex for NonZeroU32

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

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Formats the value using the given formatter.

impl Clone for NonZeroU32

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fn clone(&self) -> NonZeroU32

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Returns a copy of the value.

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

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Performs copy-assignment from source.

impl PartialOrd<NonZeroU32> for NonZeroU32

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fn partial_cmp(&self, __arg_0: &NonZeroU32) -> Option<Ordering>

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

fn lt(&self, __arg_0: &NonZeroU32) -> bool

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

fn le(&self, __arg_0: &NonZeroU32) -> bool

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

fn gt(&self, __arg_0: &NonZeroU32) -> bool

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

fn ge(&self, __arg_0: &NonZeroU32) -> bool

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

impl Octal for NonZeroU32

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

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Formats the value using the given formatter.

impl Eq for NonZeroU32