core::ops::SubAssign - Rust
Description: API documentation for the Rust `SubAssign` trait in crate `core`.
Keywords: rust, rustlang, rust-lang, SubAssign

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

    #[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.

## Implementors

- `impl SubAssign for Wrapping<usize>` | [src]

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

- `impl SubAssign for Wrapping<u8>` | [src]

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

- `impl SubAssign for Wrapping<u16>` | [src]

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

- `impl SubAssign for Wrapping<u32>` | [src]

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

- `impl SubAssign for Wrapping<u64>` | [src]

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

- `impl SubAssign for Wrapping<u128>` | [src]

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

- `impl SubAssign for Wrapping<isize>` | [src]

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

- `impl SubAssign for Wrapping<i8>` | [src]

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

- `impl SubAssign for Wrapping<i16>` | [src]

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

- `impl SubAssign for Wrapping<i32>` | [src]

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

- `impl SubAssign for Wrapping<i64>` | [src]

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

- `impl SubAssign for Wrapping<i128>` | [src]

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

- `impl SubAssign for usize` | [src]

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

- `impl SubAssign for u8` | [src]

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

- `impl SubAssign for u16` | [src]

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

- `impl SubAssign for u32` | [src]

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

- `impl SubAssign for u64` | [src]

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

- `impl SubAssign for u128` | [src]

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

- `impl SubAssign for isize` | [src]

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

- `impl SubAssign for i8` | [src]

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

- `impl SubAssign for i16` | [src]

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

- `impl SubAssign for i32` | [src]

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

- `impl SubAssign for i64` | [src]

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

- `impl SubAssign for i128` | [src]

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

- `impl SubAssign for f32` | [src]

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

- `impl SubAssign for f64` | [src]

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

- `impl SubAssign for Duration` | [src]

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