Trait AddAssign

pub trait AddAssign<Rhs = Self> {
    // Required method
    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, 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

fn add_assign(&mut self, rhs: Rhs)

Performs the += operation.

Example

let mut x: u32 = 12;
x += 1;
assert_eq!(x, 13);

Implementors

impl AddAssign for f16

impl AddAssign for f32

impl AddAssign for f64

impl AddAssign for f128

impl AddAssign for i8

impl AddAssign for i16

impl AddAssign for i32

impl AddAssign for i64

impl AddAssign for i128

impl AddAssign for isize

impl AddAssign for u8

impl AddAssign for u16

impl AddAssign for u32

impl AddAssign for u64

impl AddAssign for u128

impl AddAssign for usize

impl AddAssign for Saturating<i8>

impl AddAssign for Saturating<i16>

impl AddAssign for Saturating<i32>

impl AddAssign for Saturating<i64>

impl AddAssign for Saturating<i128>

impl AddAssign for Saturating<isize>

impl AddAssign for Saturating<u8>

impl AddAssign for Saturating<u16>

impl AddAssign for Saturating<u32>

impl AddAssign for Saturating<u64>

impl AddAssign for Saturating<u128>

impl AddAssign for Saturating<usize>

impl AddAssign for Wrapping<i8>

impl AddAssign for Wrapping<i16>

impl AddAssign for Wrapping<i32>

impl AddAssign for Wrapping<i64>

impl AddAssign for Wrapping<i128>

impl AddAssign for Wrapping<isize>

impl AddAssign for Wrapping<u8>

impl AddAssign for Wrapping<u16>

impl AddAssign for Wrapping<u32>

impl AddAssign for Wrapping<u64>

impl AddAssign for Wrapping<u128>

impl AddAssign for Wrapping<usize>

impl AddAssign for Duration

impl AddAssign for TimeDelta

impl AddAssign<&f16> for f16

impl AddAssign<&f32> for f32

impl AddAssign<&f64> for f64

impl AddAssign<&f128> for f128

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

Implements the += operator for appending to a String.

This has the same behavior as the push_str method.

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<i8> for Saturating<i8>

impl AddAssign<i8> for Wrapping<i8>

impl AddAssign<i16> for Saturating<i16>

impl AddAssign<i16> for Wrapping<i16>

impl AddAssign<i32> for Saturating<i32>

impl AddAssign<i32> for Wrapping<i32>

impl AddAssign<i64> for Saturating<i64>

impl AddAssign<i64> for Wrapping<i64>

impl AddAssign<i128> for Saturating<i128>

impl AddAssign<i128> for Wrapping<i128>

impl AddAssign<isize> for Saturating<isize>

impl AddAssign<isize> for Wrapping<isize>

impl AddAssign<u8> for Saturating<u8>

impl AddAssign<u8> for Wrapping<u8>

impl AddAssign<u16> for Saturating<u16>

impl AddAssign<u16> for Wrapping<u16>

impl AddAssign<u32> for Saturating<u32>

impl AddAssign<u32> for Wrapping<u32>

impl AddAssign<u64> for Saturating<u64>

impl AddAssign<u64> for Wrapping<u64>

impl AddAssign<u128> for Saturating<u128>

impl AddAssign<u128> for Wrapping<u128>

impl AddAssign<usize> for Saturating<usize>

impl AddAssign<usize> for Wrapping<usize>

impl AddAssign<Duration> for std::time::Instant

impl AddAssign<Duration> for SystemTime

impl AddAssign<Duration> for NaiveDateTime

Add-assign std::time::Duration to NaiveDateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

Panics

Panics if the resulting date would be out of range. Consider using NaiveDateTime::checked_add_signed to get an Option instead.

impl AddAssign<Duration> for NaiveTime

Add-assign std::time::Duration to NaiveTime.

This wraps around and never overflows or underflows. In particular the addition ignores integral number of days.

impl AddAssign<Duration> for Instant

impl AddAssign<TimeDelta> for NaiveDate

Add-assign of TimeDelta to NaiveDate.

This discards the fractional days in TimeDelta, rounding to the closest integral number of days towards TimeDelta::zero().

Panics

Panics if the resulting date would be out of range. Consider using NaiveDate::checked_add_signed to get an Option instead.

impl AddAssign<TimeDelta> for NaiveDateTime

Add-assign TimeDelta to NaiveDateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

Panics

Panics if the resulting date would be out of range. Consider using NaiveDateTime::checked_add_signed to get an Option instead.

impl AddAssign<TimeDelta> for NaiveTime

Add-assign TimeDelta to NaiveTime.

This wraps around and never overflows or underflows. In particular the addition ignores integral number of days.

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

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

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

where Simd<T, N>: Add<U, Output = Simd<T, N>>, T: SimdElement, LaneCount<N>: SupportedLaneCount,

impl<Tz> AddAssign<Duration> for DateTime<Tz>

where Tz: TimeZone,

Add-assign std::time::Duration to DateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

Panics

Panics if the resulting date would be out of range. Consider using DateTime<Tz>::checked_add_signed to get an Option instead.

impl<Tz> AddAssign<TimeDelta> for Date<Tz>

where Tz: TimeZone,

impl<Tz> AddAssign<TimeDelta> for DateTime<Tz>

where Tz: TimeZone,

Add-assign chrono::Duration to DateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

Panics

Panics if the resulting date would be out of range. Consider using DateTime<Tz>::checked_add_signed to get an Option instead.