std::ops::Sub
Trait std::ops::Sub
#[lang = "sub"]
pub trait Sub<RHS = Self> {
type Output;
fn sub(self, rhs: RHS) -> Self::Output;
}
The subtraction operator -.
Examples
This example creates a Point struct that implements the Sub trait, and then demonstrates subtracting two Points.
use std::ops::Sub;
#[derive(Debug)]
struct Point {
x: i32,
y: i32,
}
impl Sub for Point {
type Output = Point;
fn sub(self, other: Point) -> Point {
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
}
}
fn main() {
assert_eq!(Point { x: 3, y: 3 } - Point { x: 2, y: 3 },
Point { x: 1, y: 0 });
} Note that RHS = Self by default, but this is not mandatory. For example, std::time::SystemTime implements Sub<Duration>, which permits operations of the form SystemTime = SystemTime - Duration.
Associated Types
type Output
The resulting type after applying the - operator
Required Methods
Implementors
impl<'a, 'b, T> Sub<&'b BTreeSet<T>> for &'a BTreeSet<T> where
T: Ord + Clone,impl Sub<Wrapping<usize>> for Wrapping<usize>impl Sub<Wrapping<u8>> for Wrapping<u8>impl Sub<Wrapping<u16>> for Wrapping<u16>impl Sub<Wrapping<u32>> for Wrapping<u32>impl Sub<Wrapping<u64>> for Wrapping<u64>impl Sub<Wrapping<u128>> for Wrapping<u128>impl Sub<Wrapping<isize>> for Wrapping<isize>impl Sub<Wrapping<i8>> for Wrapping<i8>impl Sub<Wrapping<i16>> for Wrapping<i16>impl Sub<Wrapping<i32>> for Wrapping<i32>impl Sub<Wrapping<i64>> for Wrapping<i64>impl Sub<Wrapping<i128>> for Wrapping<i128>impl<'a> Sub<Wrapping<usize>> for &'a Wrapping<usize>impl<'a> Sub<&'a Wrapping<usize>> for Wrapping<usize>impl<'a, 'b> Sub<&'a Wrapping<usize>> for &'b Wrapping<usize>impl<'a> Sub<Wrapping<u8>> for &'a Wrapping<u8>impl<'a> Sub<&'a Wrapping<u8>> for Wrapping<u8>impl<'a, 'b> Sub<&'a Wrapping<u8>> for &'b Wrapping<u8>impl<'a> Sub<Wrapping<u16>> for &'a Wrapping<u16>impl<'a> Sub<&'a Wrapping<u16>> for Wrapping<u16>impl<'a, 'b> Sub<&'a Wrapping<u16>> for &'b Wrapping<u16>impl<'a> Sub<Wrapping<u32>> for &'a Wrapping<u32>impl<'a> Sub<&'a Wrapping<u32>> for Wrapping<u32>impl<'a, 'b> Sub<&'a Wrapping<u32>> for &'b Wrapping<u32>impl<'a> Sub<Wrapping<u64>> for &'a Wrapping<u64>impl<'a> Sub<&'a Wrapping<u64>> for Wrapping<u64>impl<'a, 'b> Sub<&'a Wrapping<u64>> for &'b Wrapping<u64>impl<'a> Sub<Wrapping<u128>> for &'a Wrapping<u128>impl<'a> Sub<&'a Wrapping<u128>> for Wrapping<u128>impl<'a, 'b> Sub<&'a Wrapping<u128>> for &'b Wrapping<u128>impl<'a> Sub<Wrapping<isize>> for &'a Wrapping<isize>impl<'a> Sub<&'a Wrapping<isize>> for Wrapping<isize>impl<'a, 'b> Sub<&'a Wrapping<isize>> for &'b Wrapping<isize>impl<'a> Sub<Wrapping<i8>> for &'a Wrapping<i8>impl<'a> Sub<&'a Wrapping<i8>> for Wrapping<i8>impl<'a, 'b> Sub<&'a Wrapping<i8>> for &'b Wrapping<i8>impl<'a> Sub<Wrapping<i16>> for &'a Wrapping<i16>impl<'a> Sub<&'a Wrapping<i16>> for Wrapping<i16>impl<'a, 'b> Sub<&'a Wrapping<i16>> for &'b Wrapping<i16>impl<'a> Sub<Wrapping<i32>> for &'a Wrapping<i32>impl<'a> Sub<&'a Wrapping<i32>> for Wrapping<i32>impl<'a, 'b> Sub<&'a Wrapping<i32>> for &'b Wrapping<i32>impl<'a> Sub<Wrapping<i64>> for &'a Wrapping<i64>impl<'a> Sub<&'a Wrapping<i64>> for Wrapping<i64>impl<'a, 'b> Sub<&'a Wrapping<i64>> for &'b Wrapping<i64>impl<'a> Sub<Wrapping<i128>> for &'a Wrapping<i128>impl<'a> Sub<&'a Wrapping<i128>> for Wrapping<i128>impl<'a, 'b> Sub<&'a Wrapping<i128>> for &'b Wrapping<i128>impl Sub<usize> for usizeimpl Sub<u8> for u8impl Sub<u16> for u16impl Sub<u32> for u32impl Sub<u64> for u64impl Sub<u128> for u128impl Sub<isize> for isizeimpl Sub<i8> for i8impl Sub<i16> for i16impl Sub<i32> for i32impl Sub<i64> for i64impl Sub<i128> for i128impl Sub<f32> for f32impl Sub<f64> for f64impl<'a> Sub<usize> for &'a usizeimpl<'a> Sub<&'a usize> for usizeimpl<'a, 'b> Sub<&'a usize> for &'b usizeimpl<'a> Sub<u8> for &'a u8impl<'a> Sub<&'a u8> for u8impl<'a, 'b> Sub<&'a u8> for &'b u8impl<'a> Sub<u16> for &'a u16impl<'a> Sub<&'a u16> for u16impl<'a, 'b> Sub<&'a u16> for &'b u16impl<'a> Sub<u32> for &'a u32impl<'a> Sub<&'a u32> for u32impl<'a, 'b> Sub<&'a u32> for &'b u32impl<'a> Sub<u64> for &'a u64impl<'a> Sub<&'a u64> for u64impl<'a, 'b> Sub<&'a u64> for &'b u64impl<'a> Sub<u128> for &'a u128impl<'a> Sub<&'a u128> for u128impl<'a, 'b> Sub<&'a u128> for &'b u128impl<'a> Sub<isize> for &'a isizeimpl<'a> Sub<&'a isize> for isizeimpl<'a, 'b> Sub<&'a isize> for &'b isizeimpl<'a> Sub<i8> for &'a i8impl<'a> Sub<&'a i8> for i8impl<'a, 'b> Sub<&'a i8> for &'b i8impl<'a> Sub<i16> for &'a i16impl<'a> Sub<&'a i16> for i16impl<'a, 'b> Sub<&'a i16> for &'b i16impl<'a> Sub<i32> for &'a i32impl<'a> Sub<&'a i32> for i32impl<'a, 'b> Sub<&'a i32> for &'b i32impl<'a> Sub<i64> for &'a i64impl<'a> Sub<&'a i64> for i64impl<'a, 'b> Sub<&'a i64> for &'b i64impl<'a> Sub<i128> for &'a i128impl<'a> Sub<&'a i128> for i128impl<'a, 'b> Sub<&'a i128> for &'b i128impl<'a> Sub<f32> for &'a f32impl<'a> Sub<&'a f32> for f32impl<'a, 'b> Sub<&'a f32> for &'b f32impl<'a> Sub<f64> for &'a f64impl<'a> Sub<&'a f64> for f64impl<'a, 'b> Sub<&'a f64> for &'b f64impl<'a, 'b, T, S> Sub<&'b HashSet<T, S>> for &'a HashSet<T, S> where
T: Eq + Hash + Clone,
S: BuildHasher + Default,impl Sub for Durationimpl Sub<Duration> for Instantimpl Sub<Instant> for Instantimpl Sub<Duration> for SystemTime
© 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.Sub.html
