# Struct std::num::NonZeroU8

1.28.0 · source ·

    pub struct NonZeroU8(/* private fields */);

Expand description

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

## Layout

`NonZeroU8` is guaranteed to have the same layout and bit validity as `u8` with the exception that `0` is not a valid instance. `Option<NonZeroU8>` is guaranteed to be compatible with `u8`, including in FFI.

Thanks to the null pointer optimization, `NonZeroU8` and `Option<NonZeroU8>` are guaranteed to have the same size and alignment:

    use std::num::NonZeroU8;

    assert_eq!(size_of::<NonZeroU8>(), size_of::<Option<NonZeroU8>>());
    assert_eq!(align_of::<NonZeroU8>(), align_of::<Option<NonZeroU8>>());

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## Implementations§

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### impl NonZeroU8

const: 1.28.0 · source

#### pub const unsafe fn new_unchecked(n: u8) -> NonZeroU8

Creates a non-zero without checking whether the value is non-zero. This results in undefined behaviour if the value is zero.

##### Safety

The value must not be zero.

const: 1.47.0 · source

#### pub const fn new(n: u8) -> Option<NonZeroU8>

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

const: 1.34.0 · source

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

Returns the value as a primitive type.

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### impl NonZeroU8

1.53.0 (const: 1.53.0) · source

#### pub const fn leading_zeros(self) -> u32

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::NonZeroU8::new(u8::MAX).unwrap();

    assert_eq!(n.leading_zeros(), 0);

Run
1.53.0 (const: 1.53.0) · source

#### pub const fn trailing_zeros(self) -> u32

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::NonZeroU8::new(0b0101000).unwrap();

    assert_eq!(n.trailing_zeros(), 3);

Run
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### impl NonZeroU8

1.64.0 (const: 1.64.0) · source

#### pub const fn checked_add(self, other: u8) -> Option<NonZeroU8>

Adds an unsigned integer to a non-zero value. Checks for overflow and returns `None` on overflow. As a consequence, the result cannot wrap to zero.

##### Examples

    let one = NonZeroU8::new(1)?;
    let two = NonZeroU8::new(2)?;
    let max = NonZeroU8::new(u8::MAX)?;

    assert_eq!(Some(two), one.checked_add(1));
    assert_eq!(None, max.checked_add(1));

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn saturating_add(self, other: u8) -> NonZeroU8

Adds an unsigned integer to a non-zero value. Return `NonZeroU8::MAX` on overflow.

##### Examples

    let one = NonZeroU8::new(1)?;
    let two = NonZeroU8::new(2)?;
    let max = NonZeroU8::new(u8::MAX)?;

    assert_eq!(two, one.saturating_add(1));
    assert_eq!(max, max.saturating_add(1));

Run
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#### pub const unsafe fn unchecked_add(self, other: u8) -> NonZeroU8

🔬This is a nightly-only experimental API. (`nonzero_ops` #84186)

Adds an unsigned integer to a non-zero value, assuming overflow cannot occur. Overflow is unchecked, and it is undefined behaviour to overflow even if the result would wrap to a non-zero value. The behaviour is undefined as soon as `self + rhs > u8::MAX`.

##### Examples

    #![feature(nonzero_ops)]

    let one = NonZeroU8::new(1)?;
    let two = NonZeroU8::new(2)?;

    assert_eq!(two, unsafe { one.unchecked_add(1) });

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn checked_next_power_of_two(self) -> Option<NonZeroU8>

Returns the smallest power of two greater than or equal to n. Checks for overflow and returns `None` if the next power of two is greater than the type’s maximum value. As a consequence, the result cannot wrap to zero.

##### Examples

    let two = NonZeroU8::new(2)?;
    let three = NonZeroU8::new(3)?;
    let four = NonZeroU8::new(4)?;
    let max = NonZeroU8::new(u8::MAX)?;

    assert_eq!(Some(two), two.checked_next_power_of_two() );
    assert_eq!(Some(four), three.checked_next_power_of_two() );
    assert_eq!(None, max.checked_next_power_of_two() );

Run
1.67.0 (const: 1.67.0) · source

#### pub const fn ilog2(self) -> u32

Returns the base 2 logarithm of the number, rounded down.

This is the same operation as `u8::ilog2`, except that it has no failure cases to worry about since this value can never be zero.

##### Examples

    assert_eq!(NonZeroU8::new(7).unwrap().ilog2(), 2);
    assert_eq!(NonZeroU8::new(8).unwrap().ilog2(), 3);
    assert_eq!(NonZeroU8::new(9).unwrap().ilog2(), 3);

Run
1.67.0 (const: 1.67.0) · source

#### pub const fn ilog10(self) -> u32

Returns the base 10 logarithm of the number, rounded down.

This is the same operation as `u8::ilog10`, except that it has no failure cases to worry about since this value can never be zero.

##### Examples

    assert_eq!(NonZeroU8::new(99).unwrap().ilog10(), 1);
    assert_eq!(NonZeroU8::new(100).unwrap().ilog10(), 2);
    assert_eq!(NonZeroU8::new(101).unwrap().ilog10(), 2);

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const: unstable · source

#### pub fn midpoint(self, rhs: NonZeroU8) -> NonZeroU8

🔬This is a nightly-only experimental API. (`num_midpoint` #110840)

Calculates the middle point of `self` and `rhs`.

`midpoint(a, b)` is `(a + b) >> 1` as if it were performed in a sufficiently-large signed integral type. This implies that the result is always rounded towards negative infinity and that no overflow will ever occur.

##### Examples

    #![feature(num_midpoint)]

    let one = NonZeroU8::new(1)?;
    let two = NonZeroU8::new(2)?;
    let four = NonZeroU8::new(4)?;

    assert_eq!(one.midpoint(four), two);
    assert_eq!(four.midpoint(one), two);

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### impl NonZeroU8

1.64.0 (const: 1.64.0) · source

#### pub const fn checked_mul(self, other: NonZeroU8) -> Option<NonZeroU8>

Multiplies two non-zero integers together. Checks for overflow and returns `None` on overflow. As a consequence, the result cannot wrap to zero.

##### Examples

    let two = NonZeroU8::new(2)?;
    let four = NonZeroU8::new(4)?;
    let max = NonZeroU8::new(u8::MAX)?;

    assert_eq!(Some(four), two.checked_mul(two));
    assert_eq!(None, max.checked_mul(two));

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn saturating_mul(self, other: NonZeroU8) -> NonZeroU8

Multiplies two non-zero integers together. Return `NonZeroU8::MAX` on overflow.

##### Examples

    let two = NonZeroU8::new(2)?;
    let four = NonZeroU8::new(4)?;
    let max = NonZeroU8::new(u8::MAX)?;

    assert_eq!(four, two.saturating_mul(two));
    assert_eq!(max, four.saturating_mul(max));

Run
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#### pub const unsafe fn unchecked_mul(self, other: NonZeroU8) -> NonZeroU8

🔬This is a nightly-only experimental API. (`nonzero_ops` #84186)

Multiplies two non-zero integers together, assuming overflow cannot occur. Overflow is unchecked, and it is undefined behaviour to overflow even if the result would wrap to a non-zero value. The behaviour is undefined as soon as `self * rhs > u8::MAX`.

##### Examples

    #![feature(nonzero_ops)]

    let two = NonZeroU8::new(2)?;
    let four = NonZeroU8::new(4)?;

    assert_eq!(four, unsafe { two.unchecked_mul(two) });

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn checked_pow(self, other: u32) -> Option<NonZeroU8>

Raises non-zero value to an integer power. Checks for overflow and returns `None` on overflow. As a consequence, the result cannot wrap to zero.

##### Examples

    let three = NonZeroU8::new(3)?;
    let twenty_seven = NonZeroU8::new(27)?;
    let half_max = NonZeroU8::new(u8::MAX / 2)?;

    assert_eq!(Some(twenty_seven), three.checked_pow(3));
    assert_eq!(None, half_max.checked_pow(3));

Run
1.64.0 (const: 1.64.0) · source

#### pub const fn saturating_pow(self, other: u32) -> NonZeroU8

Raise non-zero value to an integer power. Return `NonZeroU8::MAX` on overflow.

##### Examples

    let three = NonZeroU8::new(3)?;
    let twenty_seven = NonZeroU8::new(27)?;
    let max = NonZeroU8::new(u8::MAX)?;

    assert_eq!(twenty_seven, three.saturating_pow(3));
    assert_eq!(max, max.saturating_pow(3));

Run
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### impl NonZeroU8

1.59.0 (const: 1.59.0) · source

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

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:

    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());

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### impl NonZeroU8

1.70.0 · source

#### pub const MIN: NonZeroU8 = _

The smallest value that can be represented by this non-zero integer type, 1.

##### Examples

    assert_eq!(NonZeroU8::MIN.get(), 1u8);

Run
1.70.0 · source

#### pub const MAX: NonZeroU8 = _

The largest value that can be represented by this non-zero integer type, equal to `u8::MAX`.

##### Examples

    assert_eq!(NonZeroU8::MAX.get(), u8::MAX);

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### impl NonZeroU8

1.67.0 · source

#### pub const BITS: u32 = 8u32

The size of this non-zero integer type in bits.

This value is equal to `u8::BITS`.

##### Examples

    assert_eq!(NonZeroU8::BITS, u8::BITS);

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## Trait Implementations§

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### impl Binary for NonZeroU8

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.
1.45.0 · source§

### impl BitOr<NonZeroU8> for u8

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#### type Output = NonZeroU8

The resulting type after applying the `|` operator.
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#### fn bitor(self, rhs: NonZeroU8) -> <u8 as BitOr<NonZeroU8>>::Output

Performs the `|` operation. Read more
1.45.0 · source§

### impl BitOr<u8> for NonZeroU8

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#### type Output = NonZeroU8

The resulting type after applying the `|` operator.
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#### fn bitor(self, rhs: u8) -> <NonZeroU8 as BitOr<u8>>::Output

Performs the `|` operation. Read more
1.45.0 · source§

### impl BitOr for NonZeroU8

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#### type Output = NonZeroU8

The resulting type after applying the `|` operator.
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#### fn bitor(self, rhs: NonZeroU8) -> <NonZeroU8 as BitOr>::Output

Performs the `|` operation. Read more
1.45.0 · source§

### impl BitOrAssign<u8> for NonZeroU8

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

Performs the `|=` operation. Read more
1.45.0 · source§

### impl BitOrAssign for NonZeroU8

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#### fn bitor_assign(&mut self, rhs: NonZeroU8)

Performs the `|=` operation. Read more
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### impl Clone for NonZeroU8

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#### fn clone(&self) -> NonZeroU8

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from `source`. Read more
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### impl Debug for NonZeroU8

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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### impl Display for NonZeroU8

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
1.51.0 · source§

### impl Div<NonZeroU8> for u8

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

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

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#### type Output = u8

The resulting type after applying the `/` operator.
1.41.0 · source§

### impl From<NonZeroU8> for NonZeroI128

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#### fn from(small: NonZeroU8) -> NonZeroI128

Converts `NonZeroU8` to `NonZeroI128` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroI16

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#### fn from(small: NonZeroU8) -> NonZeroI16

Converts `NonZeroU8` to `NonZeroI16` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroI32

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#### fn from(small: NonZeroU8) -> NonZeroI32

Converts `NonZeroU8` to `NonZeroI32` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroI64

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#### fn from(small: NonZeroU8) -> NonZeroI64

Converts `NonZeroU8` to `NonZeroI64` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroIsize

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#### fn from(small: NonZeroU8) -> NonZeroIsize

Converts `NonZeroU8` to `NonZeroIsize` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroU128

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#### fn from(small: NonZeroU8) -> NonZeroU128

Converts `NonZeroU8` to `NonZeroU128` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroU16

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#### fn from(small: NonZeroU8) -> NonZeroU16

Converts `NonZeroU8` to `NonZeroU16` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroU32

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#### fn from(small: NonZeroU8) -> NonZeroU32

Converts `NonZeroU8` to `NonZeroU32` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroU64

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#### fn from(small: NonZeroU8) -> NonZeroU64

Converts `NonZeroU8` to `NonZeroU64` losslessly.

1.41.0 · source§

### impl From<NonZeroU8> for NonZeroUsize

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#### fn from(small: NonZeroU8) -> NonZeroUsize

Converts `NonZeroU8` to `NonZeroUsize` losslessly.

1.31.0 · source§

### impl From<NonZeroU8> for u8

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#### fn from(nonzero: NonZeroU8) -> u8

Converts a `NonZeroU8` into an `u8`

1.35.0 · source§

### impl FromStr for NonZeroU8

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#### type Err = ParseIntError

The associated error which can be returned from parsing.
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#### fn from_str(src: &str) -> Result<NonZeroU8, <NonZeroU8 as FromStr>::Err>

Parses a string `s` to return a value of this type. Read more
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### impl Hash for NonZeroU8

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

Feeds this value into the given `Hasher`. Read more
1.3.0 · source§

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

Feeds a slice of this type into the given `Hasher`. Read more
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### impl LowerHex for NonZeroU8

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.
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### impl Octal for NonZeroU8

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.
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### impl Ord for NonZeroU8

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

This method returns an `Ordering` between `self` and `other`. Read more
1.21.0 · source§

#### fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

#### fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

#### fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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### impl PartialEq for NonZeroU8

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#### fn eq(&self, other: &NonZeroU8) -> bool

This method tests for `self` and `other` values to be equal, and is used by `==`.
1.0.0 · source§

#### fn ne(&self, other: &Rhs) -> bool

This method tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl PartialOrd for NonZeroU8

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

This method returns an ordering between `self` and `other` values if one exists. Read more
1.0.0 · source§

#### fn lt(&self, other: &Rhs) -> bool

This method tests less than (for `self` and `other`) and is used by the `<` operator. Read more
1.0.0 · source§

#### fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for `self` and `other`) and is used by the `<=` operator. Read more
1.0.0 · source§

#### fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for `self` and `other`) and is used by the `>` operator. Read more
1.0.0 · source§

#### fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for `self` and `other`) and is used by the `>=` operator. Read more
1.51.0 · source§

### impl Rem<NonZeroU8> for u8

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

This operation satisfies `n % d == n - (n / d) * d`, and cannot panic.

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#### type Output = u8

The resulting type after applying the `%` operator.
1.49.0 · source§

### impl TryFrom<NonZeroI128> for NonZeroU8

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#### fn try_from( value: NonZeroI128 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI128>>::Error>

Attempts to convert `NonZeroI128` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroI16> for NonZeroU8

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#### fn try_from( value: NonZeroI16 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI16>>::Error>

Attempts to convert `NonZeroI16` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroI32> for NonZeroU8

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#### fn try_from( value: NonZeroI32 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI32>>::Error>

Attempts to convert `NonZeroI32` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroI64> for NonZeroU8

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#### fn try_from( value: NonZeroI64 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI64>>::Error>

Attempts to convert `NonZeroI64` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroI8> for NonZeroU8

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#### fn try_from( value: NonZeroI8 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroI8>>::Error>

Attempts to convert `NonZeroI8` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroIsize> for NonZeroU8

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#### fn try_from( value: NonZeroIsize ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroIsize>>::Error>

Attempts to convert `NonZeroIsize` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroU128> for NonZeroU8

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#### fn try_from( value: NonZeroU128 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroU128>>::Error>

Attempts to convert `NonZeroU128` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroU16> for NonZeroU8

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#### fn try_from( value: NonZeroU16 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroU16>>::Error>

Attempts to convert `NonZeroU16` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroU32> for NonZeroU8

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#### fn try_from( value: NonZeroU32 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroU32>>::Error>

Attempts to convert `NonZeroU32` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroU64> for NonZeroU8

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#### fn try_from( value: NonZeroU64 ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroU64>>::Error>

Attempts to convert `NonZeroU64` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroU8> for NonZeroI8

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#### fn try_from( value: NonZeroU8 ) -> Result<NonZeroI8, <NonZeroI8 as TryFrom<NonZeroU8>>::Error>

Attempts to convert `NonZeroU8` to `NonZeroI8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.49.0 · source§

### impl TryFrom<NonZeroUsize> for NonZeroU8

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#### fn try_from( value: NonZeroUsize ) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<NonZeroUsize>>::Error>

Attempts to convert `NonZeroUsize` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
1.46.0 · source§

### impl TryFrom<u8> for NonZeroU8

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#### fn try_from(value: u8) -> Result<NonZeroU8, <NonZeroU8 as TryFrom<u8>>::Error>

Attempts to convert `u8` to `NonZeroU8`.

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#### type Error = TryFromIntError

The type returned in the event of a conversion error.
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### impl UpperHex for NonZeroU8

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.
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### impl Copy for NonZeroU8

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### impl Eq for NonZeroU8

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### impl StructuralEq for NonZeroU8

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### impl StructuralPartialEq for NonZeroU8

## Auto Trait Implementations§

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### impl RefUnwindSafe for NonZeroU8

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### impl Send for NonZeroU8

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### impl Sync for NonZeroU8

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### impl Unpin for NonZeroU8

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### impl UnwindSafe for NonZeroU8

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T> ToString for T
where T: Display + ?Sized,

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#### default fn to_string(&self) -> String

Converts the given value to a `String`. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.