Trait std::ops::AddAssign 1.8.0[−][src]
pub trait AddAssign<Rhs = Self> { fn add_assign(&mut self, rhs: Rhs); }
Expand description
加法赋值运算符 +=
。
Examples
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。
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 });Run