# 1.34.0[−][src]Struct core::num::NonZeroI32

    #[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

## Methods

### `impl NonZeroI32`[src]

#### `pub const unsafe fn new_unchecked(n: i32) -> Self`[src]

Creates a non-zero without checking the value.

# Safety

The value must not be zero.

#### `pub fn new(n: i32) -> Option<Self>`[src]

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

#### `pub const fn get(self) -> i32`[src]

Returns the value as a primitive type.

## Trait Implementations

### `impl Copy for NonZeroI32`[src]

### `impl PartialEq<NonZeroI32> for NonZeroI32`[src]

#### `fn eq(&self, other: &NonZeroI32) -> bool`[src]

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

#### `fn ne(&self, other: &NonZeroI32) -> bool`[src]

This method tests for `!=`.

### `impl Eq for NonZeroI32`[src]

### `impl Ord for NonZeroI32`[src]

#### `fn cmp(&self, other: &NonZeroI32) -> Ordering`[src]

This method returns an `Ordering` between `self` and `other`. Read more

#### `fn max(self, other: Self) -> Self where
Self: Sized,` 1.21.0[src]

Compares and returns the maximum of two values. Read more

#### `fn min(self, other: Self) -> Self where
Self: Sized,` 1.21.0[src]

Compares and returns the minimum of two values. Read more

#### `fn clamp(self, min: Self, max: Self) -> Self where
Self: Sized,` [src]

🔬 This is a nightly-only experimental API. (`clamp` #44095)

Restrict a value to a certain interval. Read more

### `impl PartialOrd<NonZeroI32> for NonZeroI32`[src]

#### `fn partial_cmp(&self, other: &NonZeroI32) -> Option<Ordering>`[src]

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

#### `fn lt(&self, other: &NonZeroI32) -> bool`[src]

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

#### `fn le(&self, other: &NonZeroI32) -> bool`[src]

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

#### `fn gt(&self, other: &NonZeroI32) -> bool`[src]

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

#### `fn ge(&self, other: &NonZeroI32) -> bool`[src]

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

### `impl Clone for NonZeroI32`[src]

#### `fn clone(&self) -> NonZeroI32`[src]

Returns a copy of the value. Read more

#### `fn clone_from(&mut self, source: &Self)`1.0.0[src]

Performs copy-assignment from `source`. Read more

### `impl From<NonZeroI32> for i32` 1.31.0[src]

#### `fn from(nonzero: NonZeroI32) -> Self`[src]

Performs the conversion.

### `impl FromStr for NonZeroI32` 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]

Parses a string `s` to return a value of this type. Read more

### `impl Hash for NonZeroI32`[src]

#### `fn hash<__H: Hasher>(&self, state: &mut __H)`[src]

Feeds this value into the given [`Hasher`]. Read more

#### `fn hash_slice<H: Hasher>(data: &[Self], state: &mut H) where
Self: Sized,` 1.3.0[src]

Feeds a slice of this type into the given [`Hasher`]. Read more

### `impl Debug for NonZeroI32`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Display for NonZeroI32`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

### `impl Octal for NonZeroI32`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter.

### `impl Binary for NonZeroI32`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter.

### `impl LowerHex for NonZeroI32`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter.

### `impl UpperHex for NonZeroI32`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter.

## Auto Trait Implementations

### `impl Send for NonZeroI32`

### `impl Sync for NonZeroI32`

## Blanket Implementations

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(Self) -> U`[src]

Performs the conversion.

### `impl<T> From<T> for T`[src]

#### `fn from(T) -> T`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

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

The type returned in the event of a conversion error.

#### `fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&Self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut Self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&Self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)