Struct std::num::NonZeroIsize 1.34.0[−][src]
#[repr(transparent)]pub struct NonZeroIsize(_);
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroIsize> is the same size as isize:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroIsize>>(), size_of::<isize>());Run
Implementations
impl NonZeroIsize[src]
impl NonZeroIsize[src]pub const unsafe fn new_unchecked(n: isize) -> NonZeroIsize1.34.0 (const: 1.34.0)[src]
pub const fn new(n: isize) -> Option<NonZeroIsize>1.34.0 (const: 1.47.0)[src]
Creates a non-zero if the given value is not zero.
pub const fn get(self) -> isize1.34.0 (const: 1.34.0)[src]
Returns the value as a primitive type.
impl NonZeroIsize[src]
impl NonZeroIsize[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::NonZeroIsize::new(-1isize).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::NonZeroIsize::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
Trait Implementations
impl BitOr<NonZeroIsize> for NonZeroIsize1.45.0[src]
impl BitOr<NonZeroIsize> for NonZeroIsize1.45.0[src]type Output = NonZeroIsize
The resulting type after applying the | operator.
pub fn bitor(
self,
rhs: NonZeroIsize
) -> <NonZeroIsize as BitOr<NonZeroIsize>>::Output[src]
self,
rhs: NonZeroIsize
) -> <NonZeroIsize as BitOr<NonZeroIsize>>::Output
impl BitOr<NonZeroIsize> for isize1.45.0[src]
impl BitOr<NonZeroIsize> for isize1.45.0[src]type Output = NonZeroIsize
The resulting type after applying the | operator.
pub fn bitor(self, rhs: NonZeroIsize) -> <isize as BitOr<NonZeroIsize>>::Output[src]
impl BitOr<isize> for NonZeroIsize1.45.0[src]
impl BitOr<isize> for NonZeroIsize1.45.0[src]type Output = NonZeroIsize
The resulting type after applying the | operator.
pub fn bitor(self, rhs: isize) -> <NonZeroIsize as BitOr<isize>>::Output[src]
impl BitOrAssign<NonZeroIsize> for NonZeroIsize1.45.0[src]
impl BitOrAssign<NonZeroIsize> for NonZeroIsize1.45.0[src]pub fn bitor_assign(&mut self, rhs: NonZeroIsize)[src]
impl BitOrAssign<isize> for NonZeroIsize1.45.0[src]
impl BitOrAssign<isize> for NonZeroIsize1.45.0[src]pub fn bitor_assign(&mut self, rhs: isize)[src]
impl Clone for NonZeroIsize[src]
impl Clone for NonZeroIsize[src]pub fn clone(&self) -> NonZeroIsize[src]
pub fn clone_from(&mut self, source: &Self)1.0.0[src]
impl Display for NonZeroIsize[src]
impl Display for NonZeroIsize[src]impl From<NonZeroI16> for NonZeroIsize1.41.0[src]
impl From<NonZeroI16> for NonZeroIsize1.41.0[src]pub fn from(small: NonZeroI16) -> NonZeroIsize[src]
Converts NonZeroI16 to NonZeroIsize losslessly.
impl From<NonZeroI8> for NonZeroIsize1.41.0[src]
impl From<NonZeroI8> for NonZeroIsize1.41.0[src]pub fn from(small: NonZeroI8) -> NonZeroIsize[src]
Converts NonZeroI8 to NonZeroIsize losslessly.
impl From<NonZeroIsize> for isize1.31.0[src]
impl From<NonZeroIsize> for isize1.31.0[src]pub fn from(nonzero: NonZeroIsize) -> isize[src]
Converts a NonZeroIsize into an isize
impl From<NonZeroU8> for NonZeroIsize1.41.0[src]
impl From<NonZeroU8> for NonZeroIsize1.41.0[src]pub fn from(small: NonZeroU8) -> NonZeroIsize[src]
Converts NonZeroU8 to NonZeroIsize losslessly.
impl FromStr for NonZeroIsize1.35.0[src]
impl FromStr for NonZeroIsize1.35.0[src]type Err = ParseIntError
The associated error which can be returned from parsing.
pub fn from_str(
src: &str
) -> Result<NonZeroIsize, <NonZeroIsize as FromStr>::Err>[src]
src: &str
) -> Result<NonZeroIsize, <NonZeroIsize as FromStr>::Err>
impl Hash for NonZeroIsize[src]
impl Hash for NonZeroIsize[src]impl LowerHex for NonZeroIsize[src]
impl LowerHex for NonZeroIsize[src]impl Ord for NonZeroIsize[src]
impl Ord for NonZeroIsize[src]impl PartialEq<NonZeroIsize> for NonZeroIsize[src]
impl PartialEq<NonZeroIsize> for NonZeroIsize[src]pub fn eq(&self, other: &NonZeroIsize) -> bool[src]
pub fn ne(&self, other: &NonZeroIsize) -> bool[src]
impl PartialOrd<NonZeroIsize> for NonZeroIsize[src]
impl PartialOrd<NonZeroIsize> for NonZeroIsize[src]pub fn partial_cmp(&self, other: &NonZeroIsize) -> 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 TryFrom<NonZeroI128> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroI128> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI128
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI128>>::Error>[src]
value: NonZeroI128
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI128>>::Error>
Attempts to convert NonZeroI128 to NonZeroIsize.
impl TryFrom<NonZeroI32> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroIsize.
impl TryFrom<NonZeroI64> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroI64> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI64
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI64>>::Error>[src]
value: NonZeroI64
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroI64>>::Error>
Attempts to convert NonZeroI64 to NonZeroIsize.
impl TryFrom<NonZeroIsize> for NonZeroU81.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroU81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroU8.
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<NonZeroIsize> for NonZeroUsize1.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroUsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroUsize.
impl TryFrom<NonZeroIsize> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroI8.
impl TryFrom<NonZeroIsize> for NonZeroI161.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroI161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroI16.
impl TryFrom<NonZeroIsize> for NonZeroI641.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroI641.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroI64, <NonZeroI64 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroI64, <NonZeroI64 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroI64.
impl TryFrom<NonZeroIsize> for NonZeroU161.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroU161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroU16.
impl TryFrom<NonZeroIsize> for NonZeroI321.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroI32.
impl TryFrom<NonZeroIsize> for NonZeroI1281.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroI1281.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroI128, <NonZeroI128 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroI128, <NonZeroI128 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroI128.
impl TryFrom<NonZeroIsize> for NonZeroU1281.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroU1281.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroU128.
impl TryFrom<NonZeroIsize> for NonZeroU641.49.0[src]
impl TryFrom<NonZeroIsize> for NonZeroU641.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroIsize
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroIsize>>::Error>[src]
value: NonZeroIsize
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroIsize>>::Error>
Attempts to convert NonZeroIsize to NonZeroU64.
impl TryFrom<NonZeroU128> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroU128> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU128
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU128>>::Error>[src]
value: NonZeroU128
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU128>>::Error>
Attempts to convert NonZeroU128 to NonZeroIsize.
impl TryFrom<NonZeroU16> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroU16> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU16
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU16>>::Error>[src]
value: NonZeroU16
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU16>>::Error>
Attempts to convert NonZeroU16 to NonZeroIsize.
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<NonZeroU64> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroU64> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU64
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU64>>::Error>[src]
value: NonZeroU64
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroU64>>::Error>
Attempts to convert NonZeroU64 to NonZeroIsize.
impl TryFrom<NonZeroUsize> for NonZeroIsize1.49.0[src]
impl TryFrom<NonZeroUsize> for NonZeroIsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroUsize
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroUsize>>::Error>[src]
value: NonZeroUsize
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize to NonZeroIsize.
impl TryFrom<isize> for NonZeroIsize1.46.0[src]
impl TryFrom<isize> for NonZeroIsize1.46.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: isize
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<isize>>::Error>[src]
value: isize
) -> Result<NonZeroIsize, <NonZeroIsize as TryFrom<isize>>::Error>
Attempts to convert isize to NonZeroIsize.
impl UpperHex for NonZeroIsize[src]
impl UpperHex for NonZeroIsize[src]impl Copy for NonZeroIsize[src]
impl Eq for NonZeroIsize[src]
impl StructuralEq for NonZeroIsize[src]
impl StructuralPartialEq for NonZeroIsize[src]
Auto Trait Implementations
impl RefUnwindSafe for NonZeroIsize
impl Send for NonZeroIsize
impl Sync for NonZeroIsize
impl Unpin for NonZeroIsize
impl UnwindSafe for NonZeroIsize
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