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Trait std::ops::AddAssign ​

加法赋值运算符 +=。

rust
pub trait AddAssign\<Rhs = Self> {
    // Required method
    fn add_assign(&mut self, rhs: Rhs);
}

本示例创建一个 Point 结构体，该结构体实现 AddAssign trait，然后演示对可变 Point 的添加分配。

rust
use std::ops::AddAssign;

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

impl AddAssign for Point {
    fn add_assign(&mut self, other: Self) {
        *self = Self {
            x: self.x + other.x,
            y: self.y + other.y,
        };
    }
}

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

Required Methods ​

add_assign ​

执行 += 操作。

rust
fn add_assign(&mut self, rhs: Rhs)

参数：

  • rhs：添加的右值
rust
let mut x: u32 = 12;
x += 1;
assert_eq!(x, 13);

Implementors ​

impl AddAssign<&f32> for f32 ​

impl AddAssign<&f64> for f64 ​

impl AddAssign<&i8> for i8 ​

impl AddAssign<&i8> for Saturating<i8> ​

impl AddAssign<&i8> for Wrapping<i8> ​

impl AddAssign<&i16> for i16 ​

impl AddAssign<&i16> for Saturating<i16> ​

impl AddAssign<&i16> for Wrapping<i16> ​

impl AddAssign<&i32> for i32 ​

impl AddAssign<&i32> for Saturating<i32> ​

impl AddAssign<&i32> for Wrapping<i32> ​

impl AddAssign<&i64> for i64 ​

impl AddAssign<&i64> for Saturating<i64> ​

impl AddAssign<&i64> for Wrapping<i64> ​

impl AddAssign<&i128> for i128 ​

impl AddAssign<&i128> for Saturating<i128> ​

impl AddAssign<&i128> for Wrapping<i128> ​

impl AddAssign<&isize> for isize ​

impl AddAssign<&isize> for Saturating<isize> ​

impl AddAssign<&isize> for Wrapping<isize> ​

impl AddAssign<&str> for String ​

实现用于追加到 String 的 += 运算符。

这与 push_str 方法具有相同的行为。

impl AddAssign<&u8> for u8 ​

impl AddAssign<&u8> for Saturating<u8> ​

impl AddAssign<&u8> for Wrapping<u8> ​

impl AddAssign<&u16> for u16 ​

impl AddAssign<&u16> for Saturating<u16> ​

impl AddAssign<&u16> for Wrapping<u16> ​

impl AddAssign<&u32> for u32 ​

impl AddAssign<&u32> for Saturating<u32> ​

impl AddAssign<&u32> for Wrapping<u32> ​

impl AddAssign<&u64> for u64 ​

impl AddAssign<&u64> for Saturating<u64> ​

impl AddAssign<&u64> for Wrapping<u64> ​

impl AddAssign<&u128> for u128 ​

impl AddAssign<&u128> for Saturating<u128> ​

impl AddAssign<&u128> for Wrapping<u128> ​

impl AddAssign<&usize> for usize ​

impl AddAssign<&usize> for Saturating<usize> ​

impl AddAssign<&usize> for Wrapping<usize> ​

impl AddAssign<&Saturating<i8>> for Saturating<i8> ​

impl AddAssign<&Saturating<i16>> for Saturating<i16> ​

impl AddAssign<&Saturating<i32>> for Saturating<i32> ​

impl AddAssign<&Saturating<i64>> for Saturating<i64> ​

impl AddAssign<&Saturating<i128>> for Saturating<i128> ​

impl AddAssign<&Saturating<isize>> for Saturating<isize> ​

impl AddAssign<&Saturating<u8>> for Saturating<u8> ​

impl AddAssign<&Saturating<u16>> for Saturating<u16> ​

impl AddAssign<&Saturating<u32>> for Saturating<u32> ​

impl AddAssign<&Saturating<u64>> for Saturating<u64> ​

impl AddAssign<&Saturating<u128>> for Saturating<u128> ​

impl AddAssign<&Saturating<usize>> for Saturating<usize> ​

impl AddAssign<&Wrapping<i8>> for Wrapping<i8> ​

impl AddAssign<&Wrapping<i16>> for Wrapping<i16> ​

impl AddAssign<&Wrapping<i32>> for Wrapping<i32> ​

impl AddAssign<&Wrapping<i64>> for Wrapping<i64> ​

impl AddAssign<&Wrapping<i128>> for Wrapping<i128> ​

impl AddAssign<&Wrapping<isize>> for Wrapping<isize> ​

impl AddAssign<&Wrapping<u8>> for Wrapping<u8> ​

impl AddAssign<&Wrapping<u16>> for Wrapping<u16> ​

impl AddAssign<&Wrapping<u32>> for Wrapping<u32> ​

impl AddAssign<&Wrapping<u64>> for Wrapping<u64> ​

impl AddAssign<&Wrapping<u128>> for Wrapping<u128> ​

impl AddAssign<&Wrapping<usize>> for Wrapping<usize> ​

impl AddAssign<f32> for f32 ​

impl AddAssign<f64> for f64 ​

impl AddAssign<i8> for i8 ​

impl AddAssign<i8> for Saturating<i8> ​

impl AddAssign<i8> for Wrapping<i8> ​

impl AddAssign<i16> for i16 ​

impl AddAssign<i16> for Saturating<i16> ​

impl AddAssign<i16> for Wrapping<i16> ​

impl AddAssign<i32> for i32 ​

impl AddAssign<i32> for Saturating<i32> ​

impl AddAssign<i32> for Wrapping<i32> ​

impl AddAssign<i64> for i64 ​

impl AddAssign<i64> for Saturating<i64> ​

impl AddAssign<i64> for Wrapping<i64> ​

impl AddAssign<i128> for i128 ​

impl AddAssign<i128> for Saturating<i128> ​

impl AddAssign<i128> for Wrapping<i128> ​

impl AddAssign<isize> for isize ​

impl AddAssign<isize> for Saturating<isize> ​

impl AddAssign<isize> for Wrapping<isize> ​

impl AddAssign<u8> for u8 ​

impl AddAssign<u8> for Saturating<u8> ​

impl AddAssign<u8> for Wrapping<u8> ​

impl AddAssign<u16> for u16 ​

impl AddAssign<u16> for Saturating<u16> ​

impl AddAssign<u16> for Wrapping<u16> ​

impl AddAssign<u32> for u32 ​

impl AddAssign<u32> for Saturating<u32> ​

impl AddAssign<u32> for Wrapping<u32> ​

impl AddAssign<u64> for u64 ​

impl AddAssign<u64> for Saturating<u64> ​

impl AddAssign<u64> for Wrapping<u64> ​

impl AddAssign<u128> for u128 ​

impl AddAssign<u128> for Saturating<u128> ​

impl AddAssign<u128> for Wrapping<u128> ​

impl AddAssign<usize> for usize ​

impl AddAssign<usize> for Saturating<usize> ​

impl AddAssign<usize> for Wrapping<usize> ​

impl AddAssign<Saturating<i8>> for Saturating<i8> ​

impl AddAssign<Saturating<i16>> for Saturating<i16> ​

impl AddAssign<Saturating<i32>> for Saturating<i32> ​

impl AddAssign<Saturating<i64>> for Saturating<i64> ​

impl AddAssign<Saturating<i128>> for Saturating<i128> ​

impl AddAssign<Saturating<isize>> for Saturating<isize> ​

impl AddAssign<Saturating<u8>> for Saturating<u8> ​

impl AddAssign<Saturating<u16>> for Saturating<u16> ​

impl AddAssign<Saturating<u32>> for Saturating<u32> ​

impl AddAssign<Saturating<u64>> for Saturating<u64> ​

impl AddAssign<Saturating<u128>> for Saturating<u128> ​

impl AddAssign<Saturating<usize>> for Saturating<usize> ​

impl AddAssign<Wrapping<i8>> for Wrapping<i8> ​

impl AddAssign<Wrapping<i16>> for Wrapping<i16> ​

impl AddAssign<Wrapping<i32>> for Wrapping<i32> ​

impl AddAssign<Wrapping<i64>> for Wrapping<i64> ​

impl AddAssign<Wrapping<i128>> for Wrapping<i128> ​

impl AddAssign<Wrapping<isize>> for Wrapping<isize> ​

impl AddAssign<Wrapping<u8>> for Wrapping<u8> ​

impl AddAssign<Wrapping<u16>> for Wrapping<u16> ​

impl AddAssign<Wrapping<u32>> for Wrapping<u32> ​

impl AddAssign<Wrapping<u64>> for Wrapping<u64> ​

impl AddAssign<Wrapping<u128>> for Wrapping<u128> ​

impl AddAssign<Wrapping<usize>> for Wrapping<usize> ​

impl AddAssign<Duration> for Duration ​

impl AddAssign<Duration> for Instant ​

impl AddAssign<Duration> for SystemTime ​

impl<'a> AddAssign<&'a str> for Cow<'a, str> ​

impl<'a> AddAssign<Cow<'a, str>> for Cow<'a, str> ​

impl<T, U, const LANES: usize> AddAssign<U> for Simd<T, LANES> ​

rust
impl<T, U, const LANES: usize> AddAssign<U> for Simd<T, LANES>
where
  Simd<T, LANES>: Add<U, Output = Simd<T, LANES>>,
  T: SimdElement,
  LaneCount<LANES>: SupportedLaneCount,

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