1.28.0[][src]Struct std::num::NonZeroU64

#[repr(transparent)]
pub struct NonZeroU64(_);

An integer that is known not to equal zero.

This enables some memory layout optimization. For example, Option<NonZeroU64> is the same size as u64:

use std::mem::size_of;
assert_eq!(size_of::<Option<std::num::NonZeroU64>>(), size_of::<u64>());Run

Methods

impl NonZeroU64
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Create a non-zero without checking the value.

Safety

The value must not be zero.

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

Returns the value as a primitive type.

Trait Implementations

impl Hash for NonZeroU64
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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 Clone for NonZeroU64
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Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl PartialOrd<NonZeroU64> for NonZeroU64
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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 NonZeroU64
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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 Binary for NonZeroU64
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Formats the value using the given formatter.

impl Debug for NonZeroU64
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Formats the value using the given formatter. Read more

impl Eq for NonZeroU64
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impl PartialEq<NonZeroU64> for NonZeroU64
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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 Copy for NonZeroU64
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impl UpperHex for NonZeroU64
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Formats the value using the given formatter.

impl Octal for NonZeroU64
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Formats the value using the given formatter.

impl LowerHex for NonZeroU64
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Formats the value using the given formatter.

impl Display for NonZeroU64
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Formats the value using the given formatter. Read more

Auto Trait Implementations

impl Send for NonZeroU64

impl Sync for NonZeroU64

Blanket Implementations

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl<T> From for T
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Performs the conversion.

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
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Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
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Important traits for &'a mut I

Immutably borrows from an owned value. Read more

impl<T> BorrowMut for T where
    T: ?Sized
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Important traits for &'a mut I

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
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🔬 This is a nightly-only experimental API. (get_type_id #27745)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> ToOwned for T where
    T: Clone
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Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

recently added

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

impl<T> ToString for T where
    T: Display + ?Sized
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Converts the given value to a String. Read more