Struct std::num::NonZeroI8 1.34.0[−][src]
#[repr(transparent)]pub struct NonZeroI8(_);
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroI8> is the same size as i8:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroI8>>(), size_of::<i8>());Run
Implementations
impl NonZeroI8[src]
impl NonZeroI8[src]impl NonZeroI8[src]
impl NonZeroI8[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::NonZeroI8::new(-1i8).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::NonZeroI8::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
Trait Implementations
impl BitOrAssign<NonZeroI8> for NonZeroI81.45.0[src]
impl BitOrAssign<NonZeroI8> for NonZeroI81.45.0[src]pub fn bitor_assign(&mut self, rhs: NonZeroI8)[src]
impl BitOrAssign<i8> for NonZeroI81.45.0[src]
impl BitOrAssign<i8> for NonZeroI81.45.0[src]pub fn bitor_assign(&mut self, rhs: i8)[src]
impl From<NonZeroI8> for NonZeroI161.41.0[src]
impl From<NonZeroI8> for NonZeroI161.41.0[src]pub fn from(small: NonZeroI8) -> NonZeroI16[src]
Converts NonZeroI8 to NonZeroI16 losslessly.
impl From<NonZeroI8> for NonZeroI641.41.0[src]
impl From<NonZeroI8> for NonZeroI641.41.0[src]pub fn from(small: NonZeroI8) -> NonZeroI64[src]
Converts NonZeroI8 to NonZeroI64 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<NonZeroI8> for NonZeroI1281.41.0[src]
impl From<NonZeroI8> for NonZeroI1281.41.0[src]pub fn from(small: NonZeroI8) -> NonZeroI128[src]
Converts NonZeroI8 to NonZeroI128 losslessly.
impl From<NonZeroI8> for NonZeroI321.41.0[src]
impl From<NonZeroI8> for NonZeroI321.41.0[src]pub fn from(small: NonZeroI8) -> NonZeroI32[src]
Converts NonZeroI8 to NonZeroI32 losslessly.
impl PartialOrd<NonZeroI8> for NonZeroI8[src]
impl PartialOrd<NonZeroI8> for NonZeroI8[src]pub fn partial_cmp(&self, other: &NonZeroI8) -> 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 NonZeroI81.49.0[src]
impl TryFrom<NonZeroI128> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI128
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI128>>::Error>[src]
value: NonZeroI128
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI128>>::Error>
Attempts to convert NonZeroI128 to NonZeroI8.
impl TryFrom<NonZeroI16> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroI16> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI16
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI16>>::Error>[src]
value: NonZeroI16
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI16>>::Error>
Attempts to convert NonZeroI16 to NonZeroI8.
impl TryFrom<NonZeroI32> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroI8.
impl TryFrom<NonZeroI64> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroI64> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI64
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI64>>::Error>[src]
value: NonZeroI64
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroI64>>::Error>
Attempts to convert NonZeroI64 to NonZeroI8.
impl TryFrom<NonZeroI8> for NonZeroUsize1.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroUsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI8
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI8>>::Error>[src]
value: NonZeroI8
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI8>>::Error>
Attempts to convert NonZeroI8 to NonZeroUsize.
impl TryFrom<NonZeroI8> for NonZeroU161.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI8
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroI8>>::Error>[src]
value: NonZeroI8
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroI8>>::Error>
Attempts to convert NonZeroI8 to NonZeroU16.
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<NonZeroI8> for NonZeroU641.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU641.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI8
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroI8>>::Error>[src]
value: NonZeroI8
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroI8>>::Error>
Attempts to convert NonZeroI8 to NonZeroU64.
impl TryFrom<NonZeroI8> for NonZeroU1281.49.0[src]
impl TryFrom<NonZeroI8> for NonZeroU1281.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI8
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroI8>>::Error>[src]
value: NonZeroI8
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroI8>>::Error>
Attempts to convert NonZeroI8 to NonZeroU128.
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<NonZeroU128> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroU128> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU128
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU128>>::Error>[src]
value: NonZeroU128
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU128>>::Error>
Attempts to convert NonZeroU128 to NonZeroI8.
impl TryFrom<NonZeroU16> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroU16> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU16
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU16>>::Error>[src]
value: NonZeroU16
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU16>>::Error>
Attempts to convert NonZeroU16 to NonZeroI8.
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<NonZeroU64> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroU64> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU64
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU64>>::Error>[src]
value: NonZeroU64
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU64>>::Error>
Attempts to convert NonZeroU64 to NonZeroI8.
impl TryFrom<NonZeroUsize> for NonZeroI81.49.0[src]
impl TryFrom<NonZeroUsize> for NonZeroI81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroUsize>>::Error>[src]
value: NonZeroUsize
) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize to NonZeroI8.
impl Copy for NonZeroI8[src]
impl Eq for NonZeroI8[src]
impl StructuralEq for NonZeroI8[src]
impl StructuralPartialEq for NonZeroI8[src]
Auto Trait Implementations
impl RefUnwindSafe for NonZeroI8
impl Send for NonZeroI8
impl Sync for NonZeroI8
impl Unpin for NonZeroI8
impl UnwindSafe for NonZeroI8
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