Struct core::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]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]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.
fn bitor(self, rhs: NonZeroIsize) -> Self::Output[src]
impl BitOr<isize> for NonZeroIsize1.45.0[src]
impl BitOr<isize> for NonZeroIsize1.45.0[src]impl BitOrAssign<NonZeroIsize> for NonZeroIsize1.45.0[src]
impl BitOrAssign<NonZeroIsize> for NonZeroIsize1.45.0[src]fn bitor_assign(&mut self, rhs: Self)[src]
impl BitOrAssign<isize> for NonZeroIsize1.45.0[src]
impl BitOrAssign<isize> for NonZeroIsize1.45.0[src]fn bitor_assign(&mut self, rhs: isize)[src]
impl Clone for NonZeroIsize[src]
impl Clone for NonZeroIsize[src]fn clone(&self) -> NonZeroIsize[src]
fn clone_from(&mut self, source: &Self)1.0.0[src]
impl From<NonZeroI16> for NonZeroIsize1.41.0[src]
impl From<NonZeroI16> for NonZeroIsize1.41.0[src]fn from(small: NonZeroI16) -> Self[src]
Converts NonZeroI16 to NonZeroIsize losslessly.
impl From<NonZeroI8> for NonZeroIsize1.41.0[src]
impl From<NonZeroI8> for NonZeroIsize1.41.0[src]impl From<NonZeroIsize> for isize1.31.0[src]
impl From<NonZeroIsize> for isize1.31.0[src]fn from(nonzero: NonZeroIsize) -> Self[src]
Converts a NonZeroIsize into an isize
impl From<NonZeroU8> for NonZeroIsize1.41.0[src]
impl From<NonZeroU8> for NonZeroIsize1.41.0[src]impl FromStr for NonZeroIsize1.35.0[src]
impl FromStr for NonZeroIsize1.35.0[src]impl Hash for NonZeroIsize[src]
impl Hash 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]fn eq(&self, other: &NonZeroIsize) -> bool[src]
fn ne(&self, other: &NonZeroIsize) -> bool[src]
impl PartialOrd<NonZeroIsize> for NonZeroIsize[src]
impl PartialOrd<NonZeroIsize> for NonZeroIsize[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.
fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroI32) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroI64) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroU8.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroU16.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroI128.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroU32.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroU64.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroU128.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroI16.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroI32.
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.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroIsize to NonZeroI64.
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.
fn try_from(value: NonZeroU128) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroU16) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroU32) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroU64) -> Result<Self, Self::Error>[src]
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.
fn try_from(value: NonZeroUsize) -> Result<Self, Self::Error>[src]
Attempts to convert NonZeroUsize to NonZeroIsize.
impl TryFrom<isize> for NonZeroIsize1.46.0[src]
impl TryFrom<isize> for NonZeroIsize1.46.0[src]