Struct core::num::NonZeroIsize 1.34.0[−][src]
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
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pub const unsafe fn new_unchecked(n: isize) -> Self
1.34.0 (const: 1.34.0)[src]
pub const fn new(n: isize) -> Option<Self>
1.34.0 (const: 1.47.0)[src]
Creates a non-zero if the given value is not zero.
pub const fn get(self) -> isize
1.34.0 (const: 1.34.0)[src]
Returns the value as a primitive type.
impl NonZeroIsize
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pub fn leading_zeros(self) -> u32
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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:
#![feature(nonzero_leading_trailing_zeros)] let n = std::num::NonZeroIsize::new(-1isize).unwrap(); assert_eq!(n.leading_zeros(), 0);Run
pub fn trailing_zeros(self) -> u32
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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:
#![feature(nonzero_leading_trailing_zeros)] let n = std::num::NonZeroIsize::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
Trait Implementations
impl Binary for NonZeroIsize
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impl BitOr<NonZeroIsize> for NonZeroIsize
1.45.0[src]
type Output = Self
The resulting type after applying the |
operator.
fn bitor(self, rhs: Self) -> Self::Output
[src]
impl BitOr<NonZeroIsize> for isize
1.45.0[src]
type Output = NonZeroIsize
The resulting type after applying the |
operator.
fn bitor(self, rhs: NonZeroIsize) -> Self::Output
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impl BitOr<isize> for NonZeroIsize
1.45.0[src]
type Output = Self
The resulting type after applying the |
operator.
fn bitor(self, rhs: isize) -> Self::Output
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impl BitOrAssign<NonZeroIsize> for NonZeroIsize
1.45.0[src]
fn bitor_assign(&mut self, rhs: Self)
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impl BitOrAssign<isize> for NonZeroIsize
1.45.0[src]
fn bitor_assign(&mut self, rhs: isize)
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impl Clone for NonZeroIsize
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fn clone(&self) -> NonZeroIsize
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl Copy for NonZeroIsize
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impl Debug for NonZeroIsize
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impl Display for NonZeroIsize
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impl Eq for NonZeroIsize
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impl From<NonZeroI16> for NonZeroIsize
1.41.0[src]
Converts NonZeroI16
to NonZeroIsize
losslessly.
fn from(small: NonZeroI16) -> Self
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impl From<NonZeroI8> for NonZeroIsize
1.41.0[src]
Converts NonZeroI8
to NonZeroIsize
losslessly.
impl From<NonZeroIsize> for isize
1.31.0[src]
fn from(nonzero: NonZeroIsize) -> Self
[src]
Converts a NonZeroIsize
into an isize
impl From<NonZeroU8> for NonZeroIsize
1.41.0[src]
Converts NonZeroU8
to NonZeroIsize
losslessly.
impl FromStr for NonZeroIsize
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 NonZeroIsize
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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 LowerHex for NonZeroIsize
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impl Octal for NonZeroIsize
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impl Ord for NonZeroIsize
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fn cmp(&self, other: &NonZeroIsize) -> Ordering
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#[must_use]fn max(self, other: Self) -> Self where
Self: Sized,
1.21.0[src]
Self: Sized,
#[must_use]fn min(self, other: Self) -> Self where
Self: Sized,
1.21.0[src]
Self: Sized,
#[must_use]fn clamp(self, min: Self, max: Self) -> Self where
Self: Sized,
1.50.0[src]
Self: Sized,
impl PartialEq<NonZeroIsize> for NonZeroIsize
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fn eq(&self, other: &NonZeroIsize) -> bool
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fn ne(&self, other: &NonZeroIsize) -> bool
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impl PartialOrd<NonZeroIsize> for NonZeroIsize
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fn partial_cmp(&self, other: &NonZeroIsize) -> Option<Ordering>
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fn lt(&self, other: &NonZeroIsize) -> bool
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fn le(&self, other: &NonZeroIsize) -> bool
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fn gt(&self, other: &NonZeroIsize) -> bool
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fn ge(&self, other: &NonZeroIsize) -> bool
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impl StructuralEq for NonZeroIsize
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impl StructuralPartialEq for NonZeroIsize
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impl TryFrom<NonZeroI128> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroI128
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroI32> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroI32
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI32) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroI64> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroI64
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroI64) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroIsize> for NonZeroU8
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroU8
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroIsize> for NonZeroU16
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroU16
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroIsize> for NonZeroI128
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroI128
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
[src]
impl TryFrom<NonZeroIsize> for NonZeroU32
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroU32
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
[src]
impl TryFrom<NonZeroIsize> for NonZeroU64
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroU64
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroIsize> for NonZeroU128
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroU128
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
[src]
impl TryFrom<NonZeroIsize> for NonZeroUsize
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroUsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
[src]
impl TryFrom<NonZeroIsize> for NonZeroI8
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroI8
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroIsize> for NonZeroI16
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroI16
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroIsize> for NonZeroI32
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroI32
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
[src]
impl TryFrom<NonZeroIsize> for NonZeroI64
1.49.0[src]
Attempts to convert NonZeroIsize
to NonZeroI64
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroIsize) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroU128> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroU128
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU128) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroU16> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroU16
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU16) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroU32> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroU32
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU32) -> Result<Self, Self::Error>
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impl TryFrom<NonZeroU64> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroU64
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroU64) -> Result<Self, Self::Error>
[src]
impl TryFrom<NonZeroUsize> for NonZeroIsize
1.49.0[src]
Attempts to convert NonZeroUsize
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: NonZeroUsize) -> Result<Self, Self::Error>
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impl TryFrom<isize> for NonZeroIsize
1.46.0[src]
Attempts to convert isize
to NonZeroIsize
.
type Error = TryFromIntError
The type returned in the event of a conversion error.
fn try_from(value: isize) -> Result<Self, Self::Error>
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impl UpperHex for NonZeroIsize
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Auto Trait Implementations
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
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,
pub fn borrow_mut(&mut Self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
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.
pub fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,