# Struct core::num::NonZeroU8 1.28.0[−][src]

An integer that is known not to equal zero.

This enables some memory layout optimization.
For example, `Option<NonZeroU8>`

is the same size as `u8`

:

use std::mem::size_of; assert_eq!(size_of::<Option<core::num::NonZeroU8>>(), size_of::<u8>());Run

## Implementations

`impl NonZeroU8`

[src]

`pub const unsafe fn new_unchecked(n: u8) -> Self`

1.28.0 (const: 1.34.0)[src]

`pub const fn new(n: u8) -> Option<Self>`

1.28.0 (const: 1.47.0)[src]

Creates a non-zero if the given value is not zero.

`pub const fn get(self) -> u8`

1.28.0 (const: 1.34.0)[src]

Returns the value as a primitive type.

`impl NonZeroU8`

[src]

`pub fn leading_zeros(self) -> u32`

[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:

#![feature(nonzero_leading_trailing_zeros)] let n = std::num::NonZeroU8::new(u8::MAX).unwrap(); assert_eq!(n.leading_zeros(), 0);Run

`pub fn trailing_zeros(self) -> u32`

[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:

#![feature(nonzero_leading_trailing_zeros)] let n = std::num::NonZeroU8::new(0b0101000).unwrap(); assert_eq!(n.trailing_zeros(), 3);Run

`impl NonZeroU8`

[src]

`pub const fn is_power_of_two(self) -> bool`

[src]

Returns `true`

if and only if `self == (1 << k)`

for some `k`

.

On many architectures, this function can perform better than `is_power_of_two()`

on the underlying integer type, as special handling of zero can be avoided.

# Examples

Basic usage:

#![feature(nonzero_is_power_of_two)] let eight = std::num::NonZeroU8::new(8).unwrap(); assert!(eight.is_power_of_two()); let ten = std::num::NonZeroU8::new(10).unwrap(); assert!(!ten.is_power_of_two());Run

## Trait Implementations

`impl Binary for NonZeroU8`

[src]

`impl BitOr<NonZeroU8> for NonZeroU8`

1.45.0[src]

`type Output = Self`

The resulting type after applying the `|`

operator.

`fn bitor(self, rhs: Self) -> Self::Output`

[src]

`impl BitOr<NonZeroU8> for u8`

1.45.0[src]

`type Output = NonZeroU8`

The resulting type after applying the `|`

operator.

`fn bitor(self, rhs: NonZeroU8) -> Self::Output`

[src]

`impl BitOr<u8> for NonZeroU8`

1.45.0[src]

`type Output = Self`

The resulting type after applying the `|`

operator.

`fn bitor(self, rhs: u8) -> Self::Output`

[src]

`impl BitOrAssign<NonZeroU8> for NonZeroU8`

1.45.0[src]

`fn bitor_assign(&mut self, rhs: Self)`

[src]

`impl BitOrAssign<u8> for NonZeroU8`

1.45.0[src]

`fn bitor_assign(&mut self, rhs: u8)`

[src]

`impl Clone for NonZeroU8`

[src]

`fn clone(&self) -> NonZeroU8`

[src]

`fn clone_from(&mut self, source: &Self)`

1.0.0[src]

`impl Copy for NonZeroU8`

[src]

`impl Debug for NonZeroU8`

[src]

`impl Display for NonZeroU8`

[src]

`impl Div<NonZeroU8> for u8`

1.51.0[src]

`type Output = u8`

The resulting type after applying the `/`

operator.

`fn div(self, other: NonZeroU8) -> u8`

[src]

This operation rounds towards zero, truncating any fractional part of the exact result, and cannot panic.

`impl Eq for NonZeroU8`

[src]

`impl From<NonZeroU8> for u8`

1.31.0[src]

`impl From<NonZeroU8> for NonZeroU16`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroU16`

losslessly.

`impl From<NonZeroU8> for NonZeroIsize`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroIsize`

losslessly.

`impl From<NonZeroU8> for NonZeroU32`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroU32`

losslessly.

`impl From<NonZeroU8> for NonZeroU64`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroU64`

losslessly.

`impl From<NonZeroU8> for NonZeroU128`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroU128`

losslessly.

`impl From<NonZeroU8> for NonZeroUsize`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroUsize`

losslessly.

`impl From<NonZeroU8> for NonZeroI16`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroI16`

losslessly.

`impl From<NonZeroU8> for NonZeroI32`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroI32`

losslessly.

`impl From<NonZeroU8> for NonZeroI64`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroI64`

losslessly.

`impl From<NonZeroU8> for NonZeroI128`

1.41.0[src]

Converts `NonZeroU8`

to `NonZeroI128`

losslessly.

`impl FromStr for NonZeroU8`

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>`

[src]

`impl Hash for NonZeroU8`

[src]

`fn hash<__H: Hasher>(&self, state: &mut __H)`

[src]

`fn hash_slice<H: Hasher>(data: &[Self], state: &mut H) where`

Self: Sized,

1.3.0[src]

Self: Sized,

`impl LowerHex for NonZeroU8`

[src]

`impl Octal for NonZeroU8`

[src]

`impl Ord for NonZeroU8`

[src]

`fn cmp(&self, other: &NonZeroU8) -> Ordering`

[src]

`#[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<NonZeroU8> for NonZeroU8`

[src]

`impl PartialOrd<NonZeroU8> for NonZeroU8`

[src]

`fn partial_cmp(&self, other: &NonZeroU8) -> Option<Ordering>`

[src]

`fn lt(&self, other: &NonZeroU8) -> bool`

[src]

`fn le(&self, other: &NonZeroU8) -> bool`

[src]

`fn gt(&self, other: &NonZeroU8) -> bool`

[src]

`fn ge(&self, other: &NonZeroU8) -> bool`

[src]

`impl Rem<NonZeroU8> for u8`

1.51.0[src]

`type Output = u8`

The resulting type after applying the `%`

operator.

`fn rem(self, other: NonZeroU8) -> u8`

[src]

This operation satisfies `n % d == n - (n / d) * d`

, and cannot panic.

`impl StructuralEq for NonZeroU8`

[src]

`impl StructuralPartialEq for NonZeroU8`

[src]

`impl TryFrom<NonZeroI128> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroI128`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroI128) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroI16> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroI16`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroI16) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroI32> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroI32`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroI32) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroI64> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroI64`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroI64) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroI8> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroI8`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroI8) -> Result<Self, Self::Error>`

[src]

`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>`

[src]

`impl TryFrom<NonZeroU128> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroU128`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroU128) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroU16> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroU16`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroU16) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroU32> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroU32`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroU32) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroU64> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroU64`

to `NonZeroU8`

.

`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<NonZeroU8> for NonZeroI8`

1.49.0[src]

Attempts to convert `NonZeroU8`

to `NonZeroI8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroU8) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<NonZeroUsize> for NonZeroU8`

1.49.0[src]

Attempts to convert `NonZeroUsize`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: NonZeroUsize) -> Result<Self, Self::Error>`

[src]

`impl TryFrom<u8> for NonZeroU8`

1.46.0[src]

Attempts to convert `u8`

to `NonZeroU8`

.

`type Error = TryFromIntError`

The type returned in the event of a conversion error.

`fn try_from(value: u8) -> Result<Self, Self::Error>`

[src]

`impl UpperHex for NonZeroU8`

[src]

## Auto Trait Implementations

## Blanket Implementations

`impl<T> Any for T where`

T: 'static + ?Sized,

[src]

T: 'static + ?Sized,

`impl<T> Borrow<T> for T where`

T: ?Sized,

[src]

T: ?Sized,

`impl<T> BorrowMut<T> for T where`

T: ?Sized,

[src]

T: ?Sized,

`pub fn borrow_mut(&mut Self) -> &mut T`

[src]

`impl<T> From<T> for T`

[src]

`impl<T, U> Into<U> for T where`

U: From<T>,

[src]

U: From<T>,

`impl<T, U> TryFrom<U> for T where`

U: Into<T>,

[src]

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>`

[src]

`impl<T, U> TryInto<U> for T where`

U: TryFrom<T>,

[src]

U: TryFrom<T>,