Struct std::num::NonZeroUsize[][src]

pub struct NonZeroUsize(_);
🔬 This is a nightly-only experimental API. (nonzero #49137)

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>());Run

Methods

impl NonZeroUsize
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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.

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

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

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

Returns the value as a primitive type.

Trait Implementations

impl UpperHex for NonZeroUsize
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Formats the value using the given formatter.

impl Clone for NonZeroUsize
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Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl Octal for NonZeroUsize
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Formats the value using the given formatter.

impl PartialOrd<NonZeroUsize> for NonZeroUsize
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This method returns an ordering between self and other values if one exists. Read more

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

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

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

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

impl Ord for NonZeroUsize
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This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

impl Copy for NonZeroUsize
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impl Hash for NonZeroUsize
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Feeds this value into the given [Hasher]. Read more

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

impl Eq for NonZeroUsize
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impl PartialEq<NonZeroUsize> for NonZeroUsize
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This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

impl LowerHex for NonZeroUsize
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Formats the value using the given formatter.

impl Display for NonZeroUsize
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Formats the value using the given formatter. Read more

impl Binary for NonZeroUsize
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Formats the value using the given formatter.

impl Debug for NonZeroUsize
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Formats the value using the given formatter. Read more

Auto Trait Implementations

impl Send for NonZeroUsize

impl Sync for NonZeroUsize