std::ops::AddAssign

Trait std::ops::AddAssign

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

The addition assignment operator +=.

Examples

This example creates a Point struct that implements the AddAssign trait, and then demonstrates add-assigning to a mutable Point.

use std::ops::AddAssign;

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

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

impl PartialEq for Point {
    fn eq(&self, other: &Self) -> bool {
        self.x == other.x && 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

Implementors

• impl<'a> AddAssign<&'a str> for Cow<'a, str>
• impl<'a> AddAssign<Cow<'a, str>> for Cow<'a, str>
• impl<'a> AddAssign<&'a str> for String
• impl AddAssign<Wrapping<usize>> for Wrapping<usize>
• 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<isize>> for Wrapping<isize>
• 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<usize> for usize
• impl AddAssign<u8> for u8
• impl AddAssign<u16> for u16
• impl AddAssign<u32> for u32
• impl AddAssign<u64> for u64
• impl AddAssign<u128> for u128
• impl AddAssign<isize> for isize
• impl AddAssign<i8> for i8
• impl AddAssign<i16> for i16
• impl AddAssign<i32> for i32
• impl AddAssign<i64> for i64
• impl AddAssign<i128> for i128
• impl AddAssign<f32> for f32
• impl AddAssign<f64> for f64
• impl AddAssign for Duration
• impl AddAssign<Duration> for Instant
• impl AddAssign<Duration> for SystemTime