# Trait std::ops::SubAssign

1.8.0 · source ·

    pub trait SubAssign<Rhs = Self> {
        // Required method
        fn sub_assign(&mut self, rhs: Rhs);
    }

Expand description

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, Copy, Clone, PartialEq)]
    struct Point {
        x: i32,
        y: i32,
    }

    impl SubAssign for Point {
        fn sub_assign(&mut self, other: Self) {
            *self = Self {
                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§

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

Performs the `-=` operation.

##### Example

    let mut x: u32 = 12;
    x -= 1;
    assert_eq!(x, 11);

Run

## Implementors§

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### impl SubAssign for f32

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### impl SubAssign for f64

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### impl SubAssign for i8

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### impl SubAssign for i16

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### impl SubAssign for i32

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### impl SubAssign for i64

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### impl SubAssign for i128

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### impl SubAssign for isize

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### impl SubAssign for u8

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### impl SubAssign for u16

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### impl SubAssign for u32

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### impl SubAssign for u64

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### impl SubAssign for u128

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### impl SubAssign for usize

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### impl SubAssign for Saturating<i8>

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### impl SubAssign for Saturating<i16>

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### impl SubAssign for Saturating<i32>

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### impl SubAssign for Saturating<i64>

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### impl SubAssign for Saturating<i128>

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### impl SubAssign for Saturating<isize>

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### impl SubAssign for Saturating<u8>

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### impl SubAssign for Saturating<u16>

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### impl SubAssign for Saturating<u32>

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### impl SubAssign for Saturating<u64>

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### impl SubAssign for Saturating<u128>

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### impl SubAssign for Saturating<usize>

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### impl SubAssign for Wrapping<i8>

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### impl SubAssign for Wrapping<i16>

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### impl SubAssign for Wrapping<i32>

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### impl SubAssign for Wrapping<i64>

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### impl SubAssign for Wrapping<i128>

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### impl SubAssign for Wrapping<isize>

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### impl SubAssign for Wrapping<u8>

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### impl SubAssign for Wrapping<u16>

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### impl SubAssign for Wrapping<u32>

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### impl SubAssign for Wrapping<u64>

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### impl SubAssign for Wrapping<u128>

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### impl SubAssign for Wrapping<usize>

1.9.0 · source§

### impl SubAssign for Duration

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### impl SubAssign<&f32> for f32

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### impl SubAssign<&f64> for f64

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### impl SubAssign<&i8> for i8

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### impl SubAssign<&i8> for Saturating<i8>

1.22.0 · source§

### impl SubAssign<&i8> for Wrapping<i8>

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### impl SubAssign<&i16> for i16

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### impl SubAssign<&i16> for Saturating<i16>

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### impl SubAssign<&i16> for Wrapping<i16>

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### impl SubAssign<&i32> for i32

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### impl SubAssign<&i32> for Saturating<i32>

1.22.0 · source§

### impl SubAssign<&i32> for Wrapping<i32>

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### impl SubAssign<&i64> for i64

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### impl SubAssign<&i64> for Saturating<i64>

1.22.0 · source§

### impl SubAssign<&i64> for Wrapping<i64>

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### impl SubAssign<&i128> for i128

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### impl SubAssign<&i128> for Saturating<i128>

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### impl SubAssign<&i128> for Wrapping<i128>

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### impl SubAssign<&isize> for isize

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### impl SubAssign<&isize> for Saturating<isize>

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### impl SubAssign<&isize> for Wrapping<isize>

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### impl SubAssign<&u8> for u8

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### impl SubAssign<&u8> for Saturating<u8>

1.22.0 · source§

### impl SubAssign<&u8> for Wrapping<u8>

1.22.0 · source§

### impl SubAssign<&u16> for u16

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### impl SubAssign<&u16> for Saturating<u16>

1.22.0 · source§

### impl SubAssign<&u16> for Wrapping<u16>

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### impl SubAssign<&u32> for u32

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### impl SubAssign<&u32> for Saturating<u32>

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### impl SubAssign<&u32> for Wrapping<u32>

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### impl SubAssign<&u64> for u64

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### impl SubAssign<&u64> for Saturating<u64>

1.22.0 · source§

### impl SubAssign<&u64> for Wrapping<u64>

1.22.0 · source§

### impl SubAssign<&u128> for u128

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### impl SubAssign<&u128> for Saturating<u128>

1.22.0 · source§

### impl SubAssign<&u128> for Wrapping<u128>

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### impl SubAssign<&usize> for usize

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### impl SubAssign<&usize> for Saturating<usize>

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### impl SubAssign<&usize> for Wrapping<usize>

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### impl SubAssign<&Saturating<i8>> for Saturating<i8>

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### impl SubAssign<&Saturating<i16>> for Saturating<i16>

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### impl SubAssign<&Saturating<i32>> for Saturating<i32>

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### impl SubAssign<&Saturating<i64>> for Saturating<i64>

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### impl SubAssign<&Saturating<i128>> for Saturating<i128>

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### impl SubAssign<&Saturating<isize>> for Saturating<isize>

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### impl SubAssign<&Saturating<u8>> for Saturating<u8>

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### impl SubAssign<&Saturating<u16>> for Saturating<u16>

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### impl SubAssign<&Saturating<u32>> for Saturating<u32>

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### impl SubAssign<&Saturating<u64>> for Saturating<u64>

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### impl SubAssign<&Saturating<u128>> for Saturating<u128>

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### impl SubAssign<&Saturating<usize>> for Saturating<usize>

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### impl SubAssign<&Wrapping<i8>> for Wrapping<i8>

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### impl SubAssign<&Wrapping<i16>> for Wrapping<i16>

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### impl SubAssign<&Wrapping<i32>> for Wrapping<i32>

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### impl SubAssign<&Wrapping<i64>> for Wrapping<i64>

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### impl SubAssign<&Wrapping<i128>> for Wrapping<i128>

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### impl SubAssign<&Wrapping<isize>> for Wrapping<isize>

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### impl SubAssign<&Wrapping<u8>> for Wrapping<u8>

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### impl SubAssign<&Wrapping<u16>> for Wrapping<u16>

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### impl SubAssign<&Wrapping<u32>> for Wrapping<u32>

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### impl SubAssign<&Wrapping<u64>> for Wrapping<u64>

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### impl SubAssign<&Wrapping<u128>> for Wrapping<u128>

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### impl SubAssign<&Wrapping<usize>> for Wrapping<usize>

1.74.0 · source§

### impl SubAssign<i8> for Saturating<i8>

1.60.0 · source§

### impl SubAssign<i8> for Wrapping<i8>

1.74.0 · source§

### impl SubAssign<i16> for Saturating<i16>

1.60.0 · source§

### impl SubAssign<i16> for Wrapping<i16>

1.74.0 · source§

### impl SubAssign<i32> for Saturating<i32>

1.60.0 · source§

### impl SubAssign<i32> for Wrapping<i32>

1.74.0 · source§

### impl SubAssign<i64> for Saturating<i64>

1.60.0 · source§

### impl SubAssign<i64> for Wrapping<i64>

1.74.0 · source§

### impl SubAssign<i128> for Saturating<i128>

1.60.0 · source§

### impl SubAssign<i128> for Wrapping<i128>

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### impl SubAssign<isize> for Saturating<isize>

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### impl SubAssign<isize> for Wrapping<isize>

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### impl SubAssign<u8> for Saturating<u8>

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### impl SubAssign<u8> for Wrapping<u8>

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### impl SubAssign<u16> for Saturating<u16>

1.60.0 · source§

### impl SubAssign<u16> for Wrapping<u16>

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### impl SubAssign<u32> for Saturating<u32>

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### impl SubAssign<u32> for Wrapping<u32>

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### impl SubAssign<u64> for Saturating<u64>

1.60.0 · source§

### impl SubAssign<u64> for Wrapping<u64>

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### impl SubAssign<u128> for Saturating<u128>

1.60.0 · source§

### impl SubAssign<u128> for Wrapping<u128>

1.74.0 · source§

### impl SubAssign<usize> for Saturating<usize>

1.60.0 · source§

### impl SubAssign<usize> for Wrapping<usize>

1.9.0 · source§

### impl SubAssign<Duration> for Instant

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### impl SubAssign<Duration> for SystemTime

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### impl<T, U, const LANES: usize> SubAssign<U> for Simd<T, LANES>where Simd<T, LANES>: Sub<U, Output = Simd<T, LANES>>, T: SimdElement, LaneCount<LANES>: SupportedLaneCount,