Struct std::num::NonZeroU32 1.28.0[−][src]
#[repr(transparent)]pub struct NonZeroU32(_);
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroU32> is the same size as u32:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroU32>>(), size_of::<u32>());Run
Implementations
impl NonZeroU32[src]
impl NonZeroU32[src]pub const unsafe fn new_unchecked(n: u32) -> NonZeroU321.28.0 (const: 1.28.0)[src]
pub const fn new(n: u32) -> Option<NonZeroU32>1.28.0 (const: 1.47.0)[src]
Creates a non-zero if the given value is not zero.
pub const fn get(self) -> u321.28.0 (const: 1.34.0)[src]
Returns the value as a primitive type.
impl NonZeroU32[src]
impl NonZeroU32[src]pub const fn leading_zeros(self) -> u321.53.0 (const: 1.53.0)[src]
Returns the number of leading zeros in the binary representation of self.
On many architectures, this function can perform better than leading_zeros() on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroU32::new(u32::MAX).unwrap(); assert_eq!(n.leading_zeros(), 0);Run
pub const fn trailing_zeros(self) -> u321.53.0 (const: 1.53.0)[src]
Returns the number of trailing zeros in the binary representation
of self.
On many architectures, this function can perform better than trailing_zeros() on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
let n = std::num::NonZeroU32::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
impl NonZeroU32[src]
impl NonZeroU32[src]pub const fn is_power_of_two(self) -> bool[src]
Returns true if and only if self == (1 << k) for some k.
On many architectures, this function can perform better than is_power_of_two()
on the underlying integer type, as special handling of zero can be avoided.
Examples
Basic usage:
#![feature(nonzero_is_power_of_two)] let eight = std::num::NonZeroU32::new(8).unwrap(); assert!(eight.is_power_of_two()); let ten = std::num::NonZeroU32::new(10).unwrap(); assert!(!ten.is_power_of_two());Run
Trait Implementations
impl BitOr<NonZeroU32> for NonZeroU321.45.0[src]
impl BitOr<NonZeroU32> for NonZeroU321.45.0[src]type Output = NonZeroU32
The resulting type after applying the | operator.
pub fn bitor(self, rhs: NonZeroU32) -> <NonZeroU32 as BitOr<NonZeroU32>>::Output[src]
impl BitOr<NonZeroU32> for u321.45.0[src]
impl BitOr<NonZeroU32> for u321.45.0[src]type Output = NonZeroU32
The resulting type after applying the | operator.
pub fn bitor(self, rhs: NonZeroU32) -> <u32 as BitOr<NonZeroU32>>::Output[src]
impl BitOr<u32> for NonZeroU321.45.0[src]
impl BitOr<u32> for NonZeroU321.45.0[src]type Output = NonZeroU32
The resulting type after applying the | operator.
pub fn bitor(self, rhs: u32) -> <NonZeroU32 as BitOr<u32>>::Output[src]
impl BitOrAssign<NonZeroU32> for NonZeroU321.45.0[src]
impl BitOrAssign<NonZeroU32> for NonZeroU321.45.0[src]pub fn bitor_assign(&mut self, rhs: NonZeroU32)[src]
impl BitOrAssign<u32> for NonZeroU321.45.0[src]
impl BitOrAssign<u32> for NonZeroU321.45.0[src]pub fn bitor_assign(&mut self, rhs: u32)[src]
impl Clone for NonZeroU32[src]
impl Clone for NonZeroU32[src]pub fn clone(&self) -> NonZeroU32[src]
pub fn clone_from(&mut self, source: &Self)1.0.0[src]
impl Div<NonZeroU32> for u321.51.0[src]
impl Div<NonZeroU32> for u321.51.0[src]impl From<NonZeroU16> for NonZeroU321.41.0[src]
impl From<NonZeroU16> for NonZeroU321.41.0[src]pub fn from(small: NonZeroU16) -> NonZeroU32[src]
Converts NonZeroU16 to NonZeroU32 losslessly.
impl From<NonZeroU32> for NonZeroU641.41.0[src]
impl From<NonZeroU32> for NonZeroU641.41.0[src]pub fn from(small: NonZeroU32) -> NonZeroU64[src]
Converts NonZeroU32 to NonZeroU64 losslessly.
impl From<NonZeroU32> for NonZeroI1281.41.0[src]
impl From<NonZeroU32> for NonZeroI1281.41.0[src]pub fn from(small: NonZeroU32) -> NonZeroI128[src]
Converts NonZeroU32 to NonZeroI128 losslessly.
impl From<NonZeroU32> for NonZeroU1281.41.0[src]
impl From<NonZeroU32> for NonZeroU1281.41.0[src]pub fn from(small: NonZeroU32) -> NonZeroU128[src]
Converts NonZeroU32 to NonZeroU128 losslessly.
impl From<NonZeroU32> for u321.31.0[src]
impl From<NonZeroU32> for u321.31.0[src]pub fn from(nonzero: NonZeroU32) -> u32[src]
Converts a NonZeroU32 into an u32
impl From<NonZeroU32> for NonZeroI641.41.0[src]
impl From<NonZeroU32> for NonZeroI641.41.0[src]pub fn from(small: NonZeroU32) -> NonZeroI64[src]
Converts NonZeroU32 to NonZeroI64 losslessly.
impl From<NonZeroU8> for NonZeroU321.41.0[src]
impl From<NonZeroU8> for NonZeroU321.41.0[src]pub fn from(small: NonZeroU8) -> NonZeroU32[src]
Converts NonZeroU8 to NonZeroU32 losslessly.
impl FromStr for NonZeroU321.35.0[src]
impl FromStr for NonZeroU321.35.0[src]type Err = ParseIntError
The associated error which can be returned from parsing.
pub fn from_str(src: &str) -> Result<NonZeroU32, <NonZeroU32 as FromStr>::Err>[src]
impl Hash for NonZeroU32[src]
impl Hash for NonZeroU32[src]impl Ord for NonZeroU32[src]
impl Ord for NonZeroU32[src]impl PartialEq<NonZeroU32> for NonZeroU32[src]
impl PartialEq<NonZeroU32> for NonZeroU32[src]pub fn eq(&self, other: &NonZeroU32) -> bool[src]
pub fn ne(&self, other: &NonZeroU32) -> bool[src]
impl PartialOrd<NonZeroU32> for NonZeroU32[src]
impl PartialOrd<NonZeroU32> for NonZeroU32[src]pub fn partial_cmp(&self, other: &NonZeroU32) -> Option<Ordering>[src]
#[must_use]pub fn lt(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]pub fn le(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]pub fn gt(&self, other: &Rhs) -> bool1.0.0[src]
#[must_use]pub fn ge(&self, other: &Rhs) -> bool1.0.0[src]
impl Rem<NonZeroU32> for u321.51.0[src]
impl Rem<NonZeroU32> for u321.51.0[src]impl TryFrom<NonZeroI128> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroI128> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI128
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI128>>::Error>[src]
value: NonZeroI128
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI128>>::Error>
Attempts to convert NonZeroI128 to NonZeroU32.
impl TryFrom<NonZeroI16> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroI16> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI16
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI16>>::Error>[src]
value: NonZeroI16
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI16>>::Error>
Attempts to convert NonZeroI16 to NonZeroU32.
impl TryFrom<NonZeroI32> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroU32.
impl TryFrom<NonZeroI64> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroI64> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI64
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI64>>::Error>[src]
value: NonZeroI64
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI64>>::Error>
Attempts to convert NonZeroI64 to NonZeroU32.
impl TryFrom<NonZeroI8> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI8
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI8>>::Error>[src]
value: NonZeroI8
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroI8>>::Error>
Attempts to convert NonZeroI8 to NonZeroU32.
impl TryFrom<NonZeroIsize> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroU32.
impl TryFrom<NonZeroU128> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroU128> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU128
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroU128>>::Error>[src]
value: NonZeroU128
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroU128>>::Error>
Attempts to convert NonZeroU128 to NonZeroU32.
impl TryFrom<NonZeroU32> for NonZeroUsize1.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroUsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroUsize.
impl TryFrom<NonZeroU32> for NonZeroU81.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroU81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroU8.
impl TryFrom<NonZeroU32> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroI8.
impl TryFrom<NonZeroU32> for NonZeroI161.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroI161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroI16.
impl TryFrom<NonZeroU32> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroIsize.
impl TryFrom<NonZeroU32> for NonZeroU161.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroU161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroU16.
impl TryFrom<NonZeroU32> for NonZeroI321.49.0[src]
impl TryFrom<NonZeroU32> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU32
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU32>>::Error>[src]
value: NonZeroU32
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU32>>::Error>
Attempts to convert NonZeroU32 to NonZeroI32.
impl TryFrom<NonZeroU64> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroU64> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU64
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroU64>>::Error>[src]
value: NonZeroU64
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroU64>>::Error>
Attempts to convert NonZeroU64 to NonZeroU32.
impl TryFrom<NonZeroUsize> for NonZeroU321.49.0[src]
impl TryFrom<NonZeroUsize> for NonZeroU321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroUsize
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroUsize>>::Error>[src]
value: NonZeroUsize
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize to NonZeroU32.
impl TryFrom<u32> for NonZeroU321.46.0[src]
impl TryFrom<u32> for NonZeroU321.46.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: u32
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<u32>>::Error>[src]
value: u32
) -> Result<NonZeroU32, <NonZeroU32 as TryFrom<u32>>::Error>
Attempts to convert u32 to NonZeroU32.
impl Copy for NonZeroU32[src]
impl Eq for NonZeroU32[src]
impl StructuralEq for NonZeroU32[src]
impl StructuralPartialEq for NonZeroU32[src]
Auto Trait Implementations
impl RefUnwindSafe for NonZeroU32
impl Send for NonZeroU32
impl Sync for NonZeroU32
impl Unpin for NonZeroU32
impl UnwindSafe for NonZeroU32
Blanket Implementations
impl<T> Borrow<T> for T where
T: ?Sized, [src]
impl<T> Borrow<T> for T where
T: ?Sized, [src]pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W[src]
Notable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut Wimpl<T> BorrowMut<T> for T where
T: ?Sized, [src]
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W[src]
Notable traits for &'_ mut F
impl<'_, F> Future for &'_ mut F where
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W