# 1.8.0[−][src]Trait core::ops::SubAssign

    #[lang = "sub_assign"]
    pub trait SubAssign<Rhs = Self> {
        fn sub_assign(&mut self, rhs: Rhs);
    }

The subtraction assignment operator `-=`.

# Examples

This example creates a `Point` struct that implements the `SubAssign` trait, and then demonstrates sub-assigning to a mutable `Point`.

    use std::ops::SubAssign;

    #[derive(Debug, PartialEq)]
    struct Point {
        x: i32,
        y: i32,
    }

    impl SubAssign for Point {
        fn sub_assign(&mut self, other: Point) {
            *self = Point {
                x: self.x - other.x,
                y: self.y - other.y,
            };
        }
    }

    let mut point = Point { x: 3, y: 3 };
    point -= Point { x: 2, y: 3 };
    assert_eq!(point, Point {x: 1, y: 0});Run

## Required methods

### `fn sub_assign(&mut self, rhs: Rhs)`

Performs the `-=` operation.

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## Implementors

### `impl SubAssign<Wrapping<i128>> for Wrapping<i128>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<i128>)`[src]

### `impl SubAssign<Wrapping<i16>> for Wrapping<i16>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<i16>)`[src]

### `impl SubAssign<Wrapping<i32>> for Wrapping<i32>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<i32>)`[src]

### `impl SubAssign<Wrapping<i64>> for Wrapping<i64>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<i64>)`[src]

### `impl SubAssign<Wrapping<i8>> for Wrapping<i8>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<i8>)`[src]

### `impl SubAssign<Wrapping<isize>> for Wrapping<isize>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<isize>)`[src]

### `impl SubAssign<Wrapping<u128>> for Wrapping<u128>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<u128>)`[src]

### `impl SubAssign<Wrapping<u16>> for Wrapping<u16>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<u16>)`[src]

### `impl SubAssign<Wrapping<u32>> for Wrapping<u32>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<u32>)`[src]

### `impl SubAssign<Wrapping<u64>> for Wrapping<u64>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<u64>)`[src]

### `impl SubAssign<Wrapping<u8>> for Wrapping<u8>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<u8>)`[src]

### `impl SubAssign<Wrapping<usize>> for Wrapping<usize>`[src]

#### `fn sub_assign(&mut self, other: Wrapping<usize>)`[src]

### `impl SubAssign<Duration> for Duration`[src]

#### `fn sub_assign(&mut self, rhs: Duration)`[src]

### `impl SubAssign<f32> for f32`[src]

#### `fn sub_assign(&mut self, other: f32)`[src]

### `impl SubAssign<f64> for f64`[src]

#### `fn sub_assign(&mut self, other: f64)`[src]

### `impl SubAssign<i128> for i128`[src]

#### `fn sub_assign(&mut self, other: i128)`[src]

### `impl SubAssign<i16> for i16`[src]

#### `fn sub_assign(&mut self, other: i16)`[src]

### `impl SubAssign<i32> for i32`[src]

#### `fn sub_assign(&mut self, other: i32)`[src]

### `impl SubAssign<i64> for i64`[src]

#### `fn sub_assign(&mut self, other: i64)`[src]

### `impl SubAssign<i8> for i8`[src]

#### `fn sub_assign(&mut self, other: i8)`[src]

### `impl SubAssign<isize> for isize`[src]

#### `fn sub_assign(&mut self, other: isize)`[src]

### `impl SubAssign<u128> for u128`[src]

#### `fn sub_assign(&mut self, other: u128)`[src]

### `impl SubAssign<u16> for u16`[src]

#### `fn sub_assign(&mut self, other: u16)`[src]

### `impl SubAssign<u32> for u32`[src]

#### `fn sub_assign(&mut self, other: u32)`[src]

### `impl SubAssign<u64> for u64`[src]

#### `fn sub_assign(&mut self, other: u64)`[src]

### `impl SubAssign<u8> for u8`[src]

#### `fn sub_assign(&mut self, other: u8)`[src]

### `impl SubAssign<usize> for usize`[src]

#### `fn sub_assign(&mut self, other: usize)`[src]

### `impl<'a> SubAssign<&'a Wrapping<i128>> for Wrapping<i128>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<i128>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<i16>> for Wrapping<i16>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<i16>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<i32>> for Wrapping<i32>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<i32>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<i64>> for Wrapping<i64>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<i64>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<i8>> for Wrapping<i8>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<i8>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<isize>> for Wrapping<isize>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<isize>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<u128>> for Wrapping<u128>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<u128>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<u16>> for Wrapping<u16>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<u16>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<u32>> for Wrapping<u32>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<u32>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<u64>> for Wrapping<u64>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<u64>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<u8>> for Wrapping<u8>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<u8>)`[src]

### `impl<'a> SubAssign<&'a Wrapping<usize>> for Wrapping<usize>`[src]

#### `fn sub_assign(&mut self, other: &'a Wrapping<usize>)`[src]

### `impl<'a> SubAssign<&'a f32> for f32`[src]

#### `fn sub_assign(&mut self, other: &'a f32)`[src]

### `impl<'a> SubAssign<&'a f64> for f64`[src]

#### `fn sub_assign(&mut self, other: &'a f64)`[src]

### `impl<'a> SubAssign<&'a i128> for i128`[src]

#### `fn sub_assign(&mut self, other: &'a i128)`[src]

### `impl<'a> SubAssign<&'a i16> for i16`[src]

#### `fn sub_assign(&mut self, other: &'a i16)`[src]

### `impl<'a> SubAssign<&'a i32> for i32`[src]

#### `fn sub_assign(&mut self, other: &'a i32)`[src]

### `impl<'a> SubAssign<&'a i64> for i64`[src]

#### `fn sub_assign(&mut self, other: &'a i64)`[src]

### `impl<'a> SubAssign<&'a i8> for i8`[src]

#### `fn sub_assign(&mut self, other: &'a i8)`[src]

### `impl<'a> SubAssign<&'a isize> for isize`[src]

#### `fn sub_assign(&mut self, other: &'a isize)`[src]

### `impl<'a> SubAssign<&'a u128> for u128`[src]

#### `fn sub_assign(&mut self, other: &'a u128)`[src]

### `impl<'a> SubAssign<&'a u16> for u16`[src]

#### `fn sub_assign(&mut self, other: &'a u16)`[src]

### `impl<'a> SubAssign<&'a u32> for u32`[src]

#### `fn sub_assign(&mut self, other: &'a u32)`[src]

### `impl<'a> SubAssign<&'a u64> for u64`[src]

#### `fn sub_assign(&mut self, other: &'a u64)`[src]

### `impl<'a> SubAssign<&'a u8> for u8`[src]

#### `fn sub_assign(&mut self, other: &'a u8)`[src]

### `impl<'a> SubAssign<&'a usize> for usize`[src]

#### `fn sub_assign(&mut self, other: &'a usize)`[src]

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