Trait std::ops::Add
pub trait Add<Rhs = Self> {
type Output;
// Required method
fn add(self, rhs: Rhs) -> Self::Output;
}The addition operator +.
Note that Rhs is Self by default, but this is not mandatory. For example, std::time::SystemTime implements Add<Duration>, which permits operations of the form SystemTime = SystemTime + Duration.
Examples
Addable points
use std::ops::Add;
#[derive(Debug, Copy, Clone, PartialEq)]
struct Point {
x: i32,
y: i32,
}
impl Add for Point {
type Output = Self;
fn add(self, other: Self) -> Self {
Self {
x: self.x + other.x,
y: self.y + other.y,
}
}
}
assert_eq!(Point { x: 1, y: 0 } + Point { x: 2, y: 3 },
Point { x: 3, y: 3 });Implementing Add with generics
Here is an example of the same Point struct implementing the Add trait using generics.
use std::ops::Add;
#[derive(Debug, Copy, Clone, PartialEq)]
struct Point<T> {
x: T,
y: T,
}
// Notice that the implementation uses the associated type `Output`.
impl<T: Add<Output = T>> Add for Point<T> {
type Output = Self;
fn add(self, other: Self) -> Self::Output {
Self {
x: self.x + other.x,
y: self.y + other.y,
}
}
}
assert_eq!(Point { x: 1, y: 0 } + Point { x: 2, y: 3 },
Point { x: 3, y: 3 });Required Associated Types
type OutputThe resulting type after applying the + operator.
Required Methods
fn add(self, rhs: Rhs) -> Self::OutputPerforms the + operation.
Example
assert_eq!(12 + 1, 13);Implementors
impl Add for f32type Output = f32impl Add for f64type Output = f64impl Add for i8type Output = i8impl Add for i16type Output = i16impl Add for i32type Output = i32impl Add for i64type Output = i64impl Add for i128type Output = i128impl Add for isizetype Output = isizeimpl Add for u8type Output = u8impl Add for u16type Output = u16impl Add for u32type Output = u32impl Add for u64type Output = u64impl Add for u128type Output = u128impl Add for usizetype Output = usizeimpl Add for Assumetype Output = Assumeimpl Add for Saturating<i8>type Output = Saturating<i8>impl Add for Saturating<i16>type Output = Saturating<i16>impl Add for Saturating<i32>type Output = Saturating<i32>impl Add for Saturating<i64>type Output = Saturating<i64>impl Add for Saturating<i128>type Output = Saturating<i128>impl Add for Saturating<isize>type Output = Saturating<isize>impl Add for Saturating<u8>type Output = Saturating<u8>impl Add for Saturating<u16>type Output = Saturating<u16>impl Add for Saturating<u32>type Output = Saturating<u32>impl Add for Saturating<u64>type Output = Saturating<u64>impl Add for Saturating<u128>type Output = Saturating<u128>impl Add for Saturating<usize>type Output = Saturating<usize>impl Add for Wrapping<i8>type Output = Wrapping<i8>impl Add for Wrapping<i16>type Output = Wrapping<i16>impl Add for Wrapping<i32>type Output = Wrapping<i32>impl Add for Wrapping<i64>type Output = Wrapping<i64>impl Add for Wrapping<i128>type Output = Wrapping<i128>impl Add for Wrapping<isize>type Output = Wrapping<isize>impl Add for Wrapping<u8>type Output = Wrapping<u8>impl Add for Wrapping<u16>type Output = Wrapping<u16>impl Add for Wrapping<u32>type Output = Wrapping<u32>impl Add for Wrapping<u64>type Output = Wrapping<u64>impl Add for Wrapping<u128>type Output = Wrapping<u128>impl Add for Wrapping<usize>type Output = Wrapping<usize>impl Add for Durationtype Output = Durationimpl Add<&f32> for &f32type Output = <f32 as Add>::Outputimpl Add<&f32> for f32type Output = <f32 as Add>::Outputimpl Add<&f64> for &f64type Output = <f64 as Add>::Outputimpl Add<&f64> for f64type Output = <f64 as Add>::Outputimpl Add<&i8> for &i8type Output = <i8 as Add>::Outputimpl Add<&i8> for i8type Output = <i8 as Add>::Outputimpl Add<&i16> for &i16type Output = <i16 as Add>::Outputimpl Add<&i16> for i16type Output = <i16 as Add>::Outputimpl Add<&i32> for &i32type Output = <i32 as Add>::Outputimpl Add<&i32> for i32type Output = <i32 as Add>::Outputimpl Add<&i64> for &i64type Output = <i64 as Add>::Outputimpl Add<&i64> for i64type Output = <i64 as Add>::Outputimpl Add<&i128> for &i128type Output = <i128 as Add>::Outputimpl Add<&i128> for i128type Output = <i128 as Add>::Outputimpl Add<&isize> for &isizetype Output = <isize as Add>::Outputimpl Add<&isize> for isizetype Output = <isize as Add>::Outputimpl Add<&str> for StringImplements the + operator for concatenating two strings.
This consumes the String on the left-hand side and re-uses its buffer (growing it if necessary). This is done to avoid allocating a new String and copying the entire contents on every operation, which would lead to O(n^2) running time when building an n-byte string by repeated concatenation.
The string on the right-hand side is only borrowed; its contents are copied into the returned String.
Examples
Concatenating two Strings takes the first by value and borrows the second:
let a = String::from("hello");
let b = String::from(" world");
let c = a + &b;
// `a` is moved and can no longer be used here.If you want to keep using the first String, you can clone it and append to the clone instead:
let a = String::from("hello");
let b = String::from(" world");
let c = a.clone() + &b;
// `a` is still valid here.Concatenating &str slices can be done by converting the first to a String:
let a = "hello";
let b = " world";
let c = a.to_string() + b;type Output = Stringimpl Add<&u8> for &u8type Output = <u8 as Add>::Outputimpl Add<&u8> for u8type Output = <u8 as Add>::Outputimpl Add<&u16> for &u16type Output = <u16 as Add>::Outputimpl Add<&u16> for u16type Output = <u16 as Add>::Outputimpl Add<&u32> for &u32type Output = <u32 as Add>::Outputimpl Add<&u32> for u32type Output = <u32 as Add>::Outputimpl Add<&u64> for &u64type Output = <u64 as Add>::Outputimpl Add<&u64> for u64type Output = <u64 as Add>::Outputimpl Add<&u128> for &u128type Output = <u128 as Add>::Outputimpl Add<&u128> for u128type Output = <u128 as Add>::Outputimpl Add<&usize> for &usizetype Output = <usize as Add>::Outputimpl Add<&usize> for usizetype Output = <usize as Add>::Outputimpl Add<&Saturating<i8>> for &Saturating<i8>type Output = <Saturating<i8> as Add>::Outputimpl Add<&Saturating<i8>> for Saturating<i8>type Output = <Saturating<i8> as Add>::Outputimpl Add<&Saturating<i16>> for &Saturating<i16>type Output = <Saturating<i16> as Add>::Outputimpl Add<&Saturating<i16>> for Saturating<i16>type Output = <Saturating<i16> as Add>::Outputimpl Add<&Saturating<i32>> for &Saturating<i32>type Output = <Saturating<i32> as Add>::Outputimpl Add<&Saturating<i32>> for Saturating<i32>type Output = <Saturating<i32> as Add>::Outputimpl Add<&Saturating<i64>> for &Saturating<i64>type Output = <Saturating<i64> as Add>::Outputimpl Add<&Saturating<i64>> for Saturating<i64>type Output = <Saturating<i64> as Add>::Outputimpl Add<&Saturating<i128>> for &Saturating<i128>type Output = <Saturating<i128> as Add>::Outputimpl Add<&Saturating<i128>> for Saturating<i128>type Output = <Saturating<i128> as Add>::Outputimpl Add<&Saturating<isize>> for &Saturating<isize>type Output = <Saturating<isize> as Add>::Outputimpl Add<&Saturating<isize>> for Saturating<isize>type Output = <Saturating<isize> as Add>::Outputimpl Add<&Saturating<u8>> for &Saturating<u8>type Output = <Saturating<u8> as Add>::Outputimpl Add<&Saturating<u8>> for Saturating<u8>type Output = <Saturating<u8> as Add>::Outputimpl Add<&Saturating<u16>> for &Saturating<u16>type Output = <Saturating<u16> as Add>::Outputimpl Add<&Saturating<u16>> for Saturating<u16>type Output = <Saturating<u16> as Add>::Outputimpl Add<&Saturating<u32>> for &Saturating<u32>type Output = <Saturating<u32> as Add>::Outputimpl Add<&Saturating<u32>> for Saturating<u32>type Output = <Saturating<u32> as Add>::Outputimpl Add<&Saturating<u64>> for &Saturating<u64>type Output = <Saturating<u64> as Add>::Outputimpl Add<&Saturating<u64>> for Saturating<u64>type Output = <Saturating<u64> as Add>::Outputimpl Add<&Saturating<u128>> for &Saturating<u128>type Output = <Saturating<u128> as Add>::Outputimpl Add<&Saturating<u128>> for Saturating<u128>type Output = <Saturating<u128> as Add>::Outputimpl Add<&Saturating<usize>> for &Saturating<usize>type Output = <Saturating<usize> as Add>::Outputimpl Add<&Saturating<usize>> for Saturating<usize>type Output = <Saturating<usize> as Add>::Outputimpl Add<&Wrapping<i8>> for &Wrapping<i8>type Output = <Wrapping<i8> as Add>::Outputimpl Add<&Wrapping<i8>> for Wrapping<i8>type Output = <Wrapping<i8> as Add>::Outputimpl Add<&Wrapping<i16>> for &Wrapping<i16>type Output = <Wrapping<i16> as Add>::Outputimpl Add<&Wrapping<i16>> for Wrapping<i16>type Output = <Wrapping<i16> as Add>::Outputimpl Add<&Wrapping<i32>> for &Wrapping<i32>type Output = <Wrapping<i32> as Add>::Outputimpl Add<&Wrapping<i32>> for Wrapping<i32>type Output = <Wrapping<i32> as Add>::Outputimpl Add<&Wrapping<i64>> for &Wrapping<i64>type Output = <Wrapping<i64> as Add>::Outputimpl Add<&Wrapping<i64>> for Wrapping<i64>type Output = <Wrapping<i64> as Add>::Outputimpl Add<&Wrapping<i128>> for &Wrapping<i128>type Output = <Wrapping<i128> as Add>::Outputimpl Add<&Wrapping<i128>> for Wrapping<i128>type Output = <Wrapping<i128> as Add>::Outputimpl Add<&Wrapping<isize>> for &Wrapping<isize>type Output = <Wrapping<isize> as Add>::Outputimpl Add<&Wrapping<isize>> for Wrapping<isize>type Output = <Wrapping<isize> as Add>::Outputimpl Add<&Wrapping<u8>> for &Wrapping<u8>type Output = <Wrapping<u8> as Add>::Outputimpl Add<&Wrapping<u8>> for Wrapping<u8>type Output = <Wrapping<u8> as Add>::Outputimpl Add<&Wrapping<u16>> for &Wrapping<u16>type Output = <Wrapping<u16> as Add>::Outputimpl Add<&Wrapping<u16>> for Wrapping<u16>type Output = <Wrapping<u16> as Add>::Outputimpl Add<&Wrapping<u32>> for &Wrapping<u32>type Output = <Wrapping<u32> as Add>::Outputimpl Add<&Wrapping<u32>> for Wrapping<u32>type Output = <Wrapping<u32> as Add>::Outputimpl Add<&Wrapping<u64>> for &Wrapping<u64>type Output = <Wrapping<u64> as Add>::Outputimpl Add<&Wrapping<u64>> for Wrapping<u64>type Output = <Wrapping<u64> as Add>::Outputimpl Add<&Wrapping<u128>> for &Wrapping<u128>type Output = <Wrapping<u128> as Add>::Outputimpl Add<&Wrapping<u128>> for Wrapping<u128>type Output = <Wrapping<u128> as Add>::Outputimpl Add<&Wrapping<usize>> for &Wrapping<usize>type Output = <Wrapping<usize> as Add>::Outputimpl Add<&Wrapping<usize>> for Wrapping<usize>type Output = <Wrapping<usize> as Add>::Outputimpl Add<Duration> for Instanttype Output = Instantimpl Add<Duration> for SystemTimetype Output = SystemTimeimpl<'a> Add for Cow<'a, str>type Output = Cow<'a, str>impl<'a> Add<&'a str> for Cow<'a, str>type Output = Cow<'a, str>impl<'a> Add<f32> for &'a f32type Output = <f32 as Add>::Outputimpl<'a> Add<f64> for &'a f64type Output = <f64 as Add>::Outputimpl<'a> Add<i8> for &'a i8type Output = <i8 as Add>::Outputimpl<'a> Add<i16> for &'a i16type Output = <i16 as Add>::Outputimpl<'a> Add<i32> for &'a i32type Output = <i32 as Add>::Outputimpl<'a> Add<i64> for &'a i64type Output = <i64 as Add>::Outputimpl<'a> Add<i128> for &'a i128type Output = <i128 as Add>::Outputimpl<'a> Add<isize> for &'a isizetype Output = <isize as Add>::Outputimpl<'a> Add<u8> for &'a u8type Output = <u8 as Add>::Outputimpl<'a> Add<u16> for &'a u16type Output = <u16 as Add>::Outputimpl<'a> Add<u32> for &'a u32type Output = <u32 as Add>::Outputimpl<'a> Add<u64> for &'a u64type Output = <u64 as Add>::Outputimpl<'a> Add<u128> for &'a u128type Output = <u128 as Add>::Outputimpl<'a> Add<usize> for &'a usizetype Output = <usize as Add>::Outputimpl<'a> Add<Saturating<i8>> for &'a Saturating<i8>type Output = <Saturating<i8> as Add>::Outputimpl<'a> Add<Saturating<i16>> for &'a Saturating<i16>type Output = <Saturating<i16> as Add>::Outputimpl<'a> Add<Saturating<i32>> for &'a Saturating<i32>type Output = <Saturating<i32> as Add>::Outputimpl<'a> Add<Saturating<i64>> for &'a Saturating<i64>type Output = <Saturating<i64> as Add>::Outputimpl<'a> Add<Saturating<i128>> for &'a Saturating<i128>type Output = <Saturating<i128> as Add>::Outputimpl<'a> Add<Saturating<isize>> for &'a Saturating<isize>type Output = <Saturating<isize> as Add>::Outputimpl<'a> Add<Saturating<u8>> for &'a Saturating<u8>type Output = <Saturating<u8> as Add>::Outputimpl<'a> Add<Saturating<u16>> for &'a Saturating<u16>type Output = <Saturating<u16> as Add>::Outputimpl<'a> Add<Saturating<u32>> for &'a Saturating<u32>type Output = <Saturating<u32> as Add>::Outputimpl<'a> Add<Saturating<u64>> for &'a Saturating<u64>type Output = <Saturating<u64> as Add>::Outputimpl<'a> Add<Saturating<u128>> for &'a Saturating<u128>type Output = <Saturating<u128> as Add>::Outputimpl<'a> Add<Saturating<usize>> for &'a Saturating<usize>type Output = <Saturating<usize> as Add>::Outputimpl<'a> Add<Wrapping<i8>> for &'a Wrapping<i8>type Output = <Wrapping<i8> as Add>::Outputimpl<'a> Add<Wrapping<i16>> for &'a Wrapping<i16>type Output = <Wrapping<i16> as Add>::Outputimpl<'a> Add<Wrapping<i32>> for &'a Wrapping<i32>type Output = <Wrapping<i32> as Add>::Outputimpl<'a> Add<Wrapping<i64>> for &'a Wrapping<i64>type Output = <Wrapping<i64> as Add>::Outputimpl<'a> Add<Wrapping<i128>> for &'a Wrapping<i128>type Output = <Wrapping<i128> as Add>::Outputimpl<'a> Add<Wrapping<isize>> for &'a Wrapping<isize>type Output = <Wrapping<isize> as Add>::Outputimpl<'a> Add<Wrapping<u8>> for &'a Wrapping<u8>type Output = <Wrapping<u8> as Add>::Outputimpl<'a> Add<Wrapping<u16>> for &'a Wrapping<u16>type Output = <Wrapping<u16> as Add>::Outputimpl<'a> Add<Wrapping<u32>> for &'a Wrapping<u32>type Output = <Wrapping<u32> as Add>::Outputimpl<'a> Add<Wrapping<u64>> for &'a Wrapping<u64>type Output = <Wrapping<u64> as Add>::Outputimpl<'a> Add<Wrapping<u128>> for &'a Wrapping<u128>type Output = <Wrapping<u128> as Add>::Outputimpl<'a> Add<Wrapping<usize>> for &'a Wrapping<usize>type Output = <Wrapping<usize> as Add>::Outputimpl<'lhs, 'rhs, T, const LANES: usize> Add<&'rhs Simd<T, LANES>> for &'lhs Simd<T, LANES>
where
T: SimdElement,
Simd<T, LANES>: Add<Output = Simd<T, LANES>>,
LaneCount<LANES>: SupportedLaneCount,type Output = Simd<T, LANES>impl<T, const LANES: usize> Add<&Simd<T, LANES>> for Simd<T, LANES>
where
T: SimdElement,
Simd<T, LANES>: Add<Output = Simd<T, LANES>>,
LaneCount<LANES>: SupportedLaneCount,type Output = Simd<T, LANES>impl<T, const LANES: usize> Add<Simd<T, LANES>> for &Simd<T, LANES>
where
T: SimdElement,
Simd<T, LANES>: Add<Output = Simd<T, LANES>>,
LaneCount<LANES>: SupportedLaneCount,type Output = Simd<T, LANES>impl<const N: usize> Add for Simd<f32, N>
where
f32: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<f32, N>impl<const N: usize> Add for Simd<f64, N>
where
f64: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<f64, N>impl<const N: usize> Add for Simd<i8, N>
where
i8: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<i8, N>impl<const N: usize> Add for Simd<i16, N>
where
i16: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<i16, N>impl<const N: usize> Add for Simd<i32, N>
where
i32: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<i32, N>impl<const N: usize> Add for Simd<i64, N>
where
i64: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<i64, N>impl<const N: usize> Add for Simd<isize, N>
where
isize: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<isize, N>impl<const N: usize> Add for Simd<u8, N>
where
u8: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<u8, N>impl<const N: usize> Add for Simd<u16, N>
where
u16: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<u16, N>impl<const N: usize> Add for Simd<u32, N>
where
u32: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<u32, N>impl<const N: usize> Add for Simd<u64, N>
where
u64: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<u64, N>impl<const N: usize> Add for Simd<usize, N>
where
usize: SimdElement,
LaneCount<N>: SupportedLaneCount,type Output = Simd<usize, N>© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/ops/trait.Add.html