1.28.0[−][src]Struct core::num::NonZeroUsize
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroUsize>
is the same size as usize
:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroUsize>>(), size_of::<usize>());Run
Methods
impl NonZeroUsize
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pub const unsafe fn new_unchecked(n: usize) -> Self
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pub fn new(n: usize) -> Option<Self>
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Creates a non-zero if the given value is not zero.
pub const fn get(self) -> usize
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Returns the value as a primitive type.
Trait Implementations
impl Copy for NonZeroUsize
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impl PartialEq<NonZeroUsize> for NonZeroUsize
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fn eq(&self, other: &NonZeroUsize) -> bool
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fn ne(&self, other: &NonZeroUsize) -> bool
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impl Eq for NonZeroUsize
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impl Ord for NonZeroUsize
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fn cmp(&self, other: &NonZeroUsize) -> Ordering
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fn max(self, other: Self) -> Self where
Self: Sized,
1.21.0[src]
Self: Sized,
fn min(self, other: Self) -> Self where
Self: Sized,
1.21.0[src]
Self: Sized,
fn clamp(self, min: Self, max: Self) -> Self where
Self: Sized,
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Self: Sized,
impl PartialOrd<NonZeroUsize> for NonZeroUsize
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fn partial_cmp(&self, other: &NonZeroUsize) -> Option<Ordering>
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fn lt(&self, other: &NonZeroUsize) -> bool
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fn le(&self, other: &NonZeroUsize) -> bool
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fn gt(&self, other: &NonZeroUsize) -> bool
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fn ge(&self, other: &NonZeroUsize) -> bool
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impl Clone for NonZeroUsize
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fn clone(&self) -> NonZeroUsize
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl From<NonZeroUsize> for usize
1.31.0[src]
fn from(nonzero: NonZeroUsize) -> Self
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impl FromStr for NonZeroUsize
1.35.0[src]
type Err = ParseIntError
The associated error which can be returned from parsing.
fn from_str(src: &str) -> Result<Self, Self::Err>
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impl Hash for NonZeroUsize
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fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash_slice<H: Hasher>(data: &[Self], state: &mut H) where
Self: Sized,
1.3.0[src]
Self: Sized,
impl Debug for NonZeroUsize
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impl Display for NonZeroUsize
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impl Octal for NonZeroUsize
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impl Binary for NonZeroUsize
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impl LowerHex for NonZeroUsize
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impl UpperHex for NonZeroUsize
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Auto Trait Implementations
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> From<T> for T
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut Self) -> &mut T
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,