Struct std::num::NonZeroI32 1.34.0[−][src]
#[repr(transparent)]pub struct NonZeroI32(_);
An integer that is known not to equal zero.
This enables some memory layout optimization.
For example, Option<NonZeroI32> is the same size as i32:
use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroI32>>(), size_of::<i32>());Run
Implementations
impl NonZeroI32[src]
impl NonZeroI32[src]pub const unsafe fn new_unchecked(n: i32) -> NonZeroI321.34.0 (const: 1.34.0)[src]
pub const fn new(n: i32) -> Option<NonZeroI32>1.34.0 (const: 1.47.0)[src]
Creates a non-zero if the given value is not zero.
pub const fn get(self) -> i321.34.0 (const: 1.34.0)[src]
Returns the value as a primitive type.
impl NonZeroI32[src]
impl NonZeroI32[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::NonZeroI32::new(-1i32).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::NonZeroI32::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run
Trait Implementations
impl BitOr<NonZeroI32> for i321.45.0[src]
impl BitOr<NonZeroI32> for i321.45.0[src]type Output = NonZeroI32
The resulting type after applying the | operator.
pub fn bitor(self, rhs: NonZeroI32) -> <i32 as BitOr<NonZeroI32>>::Output[src]
impl BitOr<NonZeroI32> for NonZeroI321.45.0[src]
impl BitOr<NonZeroI32> for NonZeroI321.45.0[src]type Output = NonZeroI32
The resulting type after applying the | operator.
pub fn bitor(self, rhs: NonZeroI32) -> <NonZeroI32 as BitOr<NonZeroI32>>::Output[src]
impl BitOr<i32> for NonZeroI321.45.0[src]
impl BitOr<i32> for NonZeroI321.45.0[src]type Output = NonZeroI32
The resulting type after applying the | operator.
pub fn bitor(self, rhs: i32) -> <NonZeroI32 as BitOr<i32>>::Output[src]
impl BitOrAssign<NonZeroI32> for NonZeroI321.45.0[src]
impl BitOrAssign<NonZeroI32> for NonZeroI321.45.0[src]pub fn bitor_assign(&mut self, rhs: NonZeroI32)[src]
impl BitOrAssign<i32> for NonZeroI321.45.0[src]
impl BitOrAssign<i32> for NonZeroI321.45.0[src]pub fn bitor_assign(&mut self, rhs: i32)[src]
impl Clone for NonZeroI32[src]
impl Clone for NonZeroI32[src]pub fn clone(&self) -> NonZeroI32[src]
pub fn clone_from(&mut self, source: &Self)1.0.0[src]
impl From<NonZeroI16> for NonZeroI321.41.0[src]
impl From<NonZeroI16> for NonZeroI321.41.0[src]pub fn from(small: NonZeroI16) -> NonZeroI32[src]
Converts NonZeroI16 to NonZeroI32 losslessly.
impl From<NonZeroI32> for NonZeroI1281.41.0[src]
impl From<NonZeroI32> for NonZeroI1281.41.0[src]pub fn from(small: NonZeroI32) -> NonZeroI128[src]
Converts NonZeroI32 to NonZeroI128 losslessly.
impl From<NonZeroI32> for NonZeroI641.41.0[src]
impl From<NonZeroI32> for NonZeroI641.41.0[src]pub fn from(small: NonZeroI32) -> NonZeroI64[src]
Converts NonZeroI32 to NonZeroI64 losslessly.
impl From<NonZeroI32> for i321.31.0[src]
impl From<NonZeroI32> for i321.31.0[src]pub fn from(nonzero: NonZeroI32) -> i32[src]
Converts a NonZeroI32 into an i32
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 From<NonZeroU16> for NonZeroI321.41.0[src]
impl From<NonZeroU16> for NonZeroI321.41.0[src]pub fn from(small: NonZeroU16) -> NonZeroI32[src]
Converts NonZeroU16 to NonZeroI32 losslessly.
impl From<NonZeroU8> for NonZeroI321.41.0[src]
impl From<NonZeroU8> for NonZeroI321.41.0[src]pub fn from(small: NonZeroU8) -> NonZeroI32[src]
Converts NonZeroU8 to NonZeroI32 losslessly.
impl FromStr for NonZeroI321.35.0[src]
impl FromStr for NonZeroI321.35.0[src]type Err = ParseIntError
The associated error which can be returned from parsing.
pub fn from_str(src: &str) -> Result<NonZeroI32, <NonZeroI32 as FromStr>::Err>[src]
impl Hash for NonZeroI32[src]
impl Hash for NonZeroI32[src]impl Ord for NonZeroI32[src]
impl Ord for NonZeroI32[src]impl PartialEq<NonZeroI32> for NonZeroI32[src]
impl PartialEq<NonZeroI32> for NonZeroI32[src]pub fn eq(&self, other: &NonZeroI32) -> bool[src]
pub fn ne(&self, other: &NonZeroI32) -> bool[src]
impl PartialOrd<NonZeroI32> for NonZeroI32[src]
impl PartialOrd<NonZeroI32> for NonZeroI32[src]pub fn partial_cmp(&self, other: &NonZeroI32) -> 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 NonZeroI321.49.0[src]
impl TryFrom<NonZeroI128> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI128
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroI128>>::Error>[src]
value: NonZeroI128
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroI128>>::Error>
Attempts to convert NonZeroI128 to NonZeroI32.
impl TryFrom<NonZeroI32> for NonZeroU1281.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroU1281.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroU128, <NonZeroU128 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroU128.
impl TryFrom<NonZeroI32> for NonZeroU81.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroU81.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroU8.
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<NonZeroI32> for NonZeroUsize1.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroUsize1.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroUsize, <NonZeroUsize as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroUsize.
impl TryFrom<NonZeroI32> for NonZeroI161.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroI161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroI16, <NonZeroI16 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroI16.
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<NonZeroI32> for NonZeroU641.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroU641.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroU64, <NonZeroU64 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroU64.
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<NonZeroI32> for NonZeroU161.49.0[src]
impl TryFrom<NonZeroI32> for NonZeroU161.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI32
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroI32>>::Error>[src]
value: NonZeroI32
) -> Result<NonZeroU16, <NonZeroU16 as TryFrom<NonZeroI32>>::Error>
Attempts to convert NonZeroI32 to NonZeroU16.
impl TryFrom<NonZeroI64> for NonZeroI321.49.0[src]
impl TryFrom<NonZeroI64> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroI64
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroI64>>::Error>[src]
value: NonZeroI64
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroI64>>::Error>
Attempts to convert NonZeroI64 to NonZeroI32.
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<NonZeroU128> for NonZeroI321.49.0[src]
impl TryFrom<NonZeroU128> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU128
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU128>>::Error>[src]
value: NonZeroU128
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU128>>::Error>
Attempts to convert NonZeroU128 to NonZeroI32.
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 NonZeroI321.49.0[src]
impl TryFrom<NonZeroU64> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroU64
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU64>>::Error>[src]
value: NonZeroU64
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroU64>>::Error>
Attempts to convert NonZeroU64 to NonZeroI32.
impl TryFrom<NonZeroUsize> for NonZeroI321.49.0[src]
impl TryFrom<NonZeroUsize> for NonZeroI321.49.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: NonZeroUsize
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroUsize>>::Error>[src]
value: NonZeroUsize
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<NonZeroUsize>>::Error>
Attempts to convert NonZeroUsize to NonZeroI32.
impl TryFrom<i32> for NonZeroI321.46.0[src]
impl TryFrom<i32> for NonZeroI321.46.0[src]type Error = TryFromIntError
The type returned in the event of a conversion error.
pub fn try_from(
value: i32
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<i32>>::Error>[src]
value: i32
) -> Result<NonZeroI32, <NonZeroI32 as TryFrom<i32>>::Error>
Attempts to convert i32 to NonZeroI32.
impl Copy for NonZeroI32[src]
impl Eq for NonZeroI32[src]
impl StructuralEq for NonZeroI32[src]
impl StructuralPartialEq for NonZeroI32[src]
Auto Trait Implementations
impl RefUnwindSafe for NonZeroI32
impl Send for NonZeroI32
impl Sync for NonZeroI32
impl Unpin for NonZeroI32
impl UnwindSafe for NonZeroI32
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