Trait nom::lib::std::ops::Sub1.0.0[][src]

#[lang = "sub"]
pub trait Sub<RHS = Self> { type Output; fn sub(self, rhs: RHS) -> Self::Output; }

The subtraction operator -.

Note that RHS is 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.

Examples

Subtractable points

use std::ops::Sub;

#[derive(Debug, PartialEq)]
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,
        }
    }
}

assert_eq!(Point { x: 3, y: 3 } - Point { x: 2, y: 3 },
           Point { x: 1, y: 0 });

Implementing Sub with generics

Here is an example of the same Point struct implementing the Sub trait using generics.

use std::ops::Sub;

#[derive(Debug, PartialEq)]
struct Point<T> {
    x: T,
    y: T,
}

// Notice that the implementation uses the associated type `Output`.
impl<T: Sub<Output=T>> Sub for Point<T> {
    type Output = Point<T>;

    fn sub(self, other: Point<T>) -> Point<T> {
        Point {
            x: self.x - other.x,
            y: self.y - other.y,
        }
    }
}

assert_eq!(Point { x: 2, y: 3 } - Point { x: 1, y: 0 },
           Point { x: 1, y: 3 });

Associated Types

The resulting type after applying the - operator.

Required Methods

Performs the - operation.

Implementations on Foreign Types

impl Sub<Duration> for Instant
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impl Sub<Duration> for SystemTime
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impl Sub<Instant> for Instant
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impl<'a> Sub<&'a i32> for i32
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impl Sub<i8x16> for i8
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impl Sub<i32x2> for i32x2
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impl<'a> Sub<&'a Wrapping<i8>> for Wrapping<i8>
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impl Sub<u16x16> for u16
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impl Sub<u16> for u16x2
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impl<'a> Sub<&'a Wrapping<i32>> for Wrapping<i32>
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impl<'a, 'b> Sub<&'a Wrapping<i32>> for &'b Wrapping<i32>
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impl<'a> Sub<&'a u32> for u32
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impl Sub<f32x4> for f32x4
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impl<'a> Sub<&'a Wrapping<u128>> for Wrapping<u128>
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impl Sub<f32x8> for f32
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impl<'a> Sub<i32> for &'a i32
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impl Sub<i32> for i32x8
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impl Sub<f32x16> for f32
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impl Sub<i16x16> for i16x16
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impl<'a> Sub<u32> for &'a u32
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impl Sub<u8x16> for u8
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impl Sub<Duration> for Duration
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impl Sub<i32x2> for i32
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impl Sub<u16x8> for u16x8
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impl Sub<i16> for i16x8
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impl<'a> Sub<&'a Wrapping<u8>> for Wrapping<u8>
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impl Sub<i8> for i8
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impl Sub<i8x4> for i8
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impl Sub<i8x64> for i8
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impl<'a> Sub<&'a u16> for u16
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impl Sub<i16x16> for i16
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impl Sub<u8> for u8x8
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impl Sub<i16> for i16x4
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impl Sub<u8x4> for u8
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impl Sub<u16> for u16x4
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impl Sub<u16> for u16x16
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impl<'a> Sub<Wrapping<i64>> for &'a Wrapping<i64>
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impl Sub<i8x64> for i8x64
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impl Sub<f32x8> for f32x8
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impl Sub<u16> for u16
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impl Sub<u8x32> for u8x32
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impl Sub<i8x32> for i8
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impl Sub<f64x2> for f64
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impl Sub<u32> for u32x8
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impl<'a> Sub<&'a i64> for i64
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impl<'a> Sub<Wrapping<u64>> for &'a Wrapping<u64>
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impl Sub<u16x8> for u16
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impl<'a> Sub<&'a Wrapping<u64>> for Wrapping<u64>
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impl<'a> Sub<i16> for &'a i16
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impl Sub<u64x4> for u64
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impl Sub<u16x16> for u16x16
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impl<'a> Sub<Wrapping<u8>> for &'a Wrapping<u8>
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impl Sub<i32> for i32x16
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impl Sub<u8> for u8x2
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impl Sub<u16x32> for u16
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impl Sub<i8> for i8x16
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impl<'a> Sub<Wrapping<i128>> for &'a Wrapping<i128>
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impl Sub<i64x8> for i64
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impl<'a> Sub<&'a u128> for u128
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impl Sub<i32> for i32x4
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impl<'a> Sub<&'a usize> for usize
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impl Sub<i8x4> for i8x4
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impl Sub<i8x32> for i8x32
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impl<'a, 'b> Sub<&'a Wrapping<usize>> for &'b Wrapping<usize>
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impl Sub<Wrapping<i128>> for Wrapping<i128>
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impl<'a, 'b> Sub<&'a Wrapping<i16>> for &'b Wrapping<i16>
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impl Sub<u8x64> for u8
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impl<'a, 'b> Sub<&'a u32> for &'b u32
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impl Sub<f64> for f64
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impl Sub<i8x8> for i8
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impl Sub<u32x16> for u32x16
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impl<'a, 'b> Sub<&'a u8> for &'b u8
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impl Sub<Wrapping<u128>> for Wrapping<u128>
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impl Sub<u16> for u16x8
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impl Sub<i32x4> for i32x4
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impl Sub<i16> for i16
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impl Sub<i16x2> for i16
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impl Sub<f64x8> for f64x8
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impl Sub<i16> for i16x32
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impl Sub<u16x2> for u16x2
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impl<'a, 'b> Sub<&'a Wrapping<i8>> for &'b Wrapping<i8>
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impl<'a> Sub<&'a u8> for u8
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impl Sub<u16x32> for u16x32
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impl Sub<u8x32> for u8
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impl<'a> Sub<u16> for &'a u16
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impl<'a> Sub<&'a Wrapping<u16>> for Wrapping<u16>
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impl Sub<u64> for u64x4
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impl Sub<i64> for i64x2
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impl<'a> Sub<&'a i128> for i128
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impl Sub<f32x2> for f32
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impl Sub<u8> for u8x4
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impl<'a> Sub<Wrapping<u32>> for &'a Wrapping<u32>
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impl<'a> Sub<Wrapping<usize>> for &'a Wrapping<usize>
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impl<'a> Sub<u64> for &'a u64
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impl Sub<i8> for i8x64
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impl Sub<i16> for i16x2
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impl Sub<f32> for f32x16
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impl Sub<u32x8> for u32
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impl<'a, 'b> Sub<&'a Wrapping<i128>> for &'b Wrapping<i128>
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impl<'a> Sub<&'a f32> for f32
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impl Sub<f64x2> for f64x2
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impl<'a, 'b> Sub<&'a i128> for &'b i128
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impl Sub<Wrapping<i32>> for Wrapping<i32>
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impl Sub<Wrapping<isize>> for Wrapping<isize>
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impl Sub<f64x8> for f64
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impl Sub<f32> for f32
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impl Sub<i64x8> for i64x8
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impl Sub<i16x4> for i16x4
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impl<'a> Sub<Wrapping<i32>> for &'a Wrapping<i32>
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impl Sub<u32x4> for u32x4
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impl<'a, 'b> Sub<&'a Wrapping<u8>> for &'b Wrapping<u8>
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impl Sub<i32> for i32x2
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impl Sub<u8> for u8x16
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impl<'a> Sub<&'a isize> for isize
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impl<'a> Sub<&'a Wrapping<i16>> for Wrapping<i16>
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impl Sub<i64x2> for i64
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impl Sub<Wrapping<u16>> for Wrapping<u16>
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impl Sub<u8> for u8
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impl Sub<u16x4> for u16x4
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impl<'a> Sub<usize> for &'a usize
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impl Sub<u8> for u8x64
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impl<'a, 'b> Sub<&'a f64> for &'b f64
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impl Sub<u8x8> for u8
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impl Sub<i8> for i8x4
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impl Sub<i64x4> for i64x4
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impl<'a, 'b> Sub<&'a i16> for &'b i16
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impl Sub<usize> for usize
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impl Sub<u64x8> for u64
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impl<'a> Sub<&'a i8> for i8
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impl Sub<u8x8> for u8x8
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impl Sub<i128> for i128
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impl Sub<f32> for f32x2
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impl Sub<i16x2> for i16x2
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impl Sub<i32x8> for i32
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impl Sub<u64x2> for u64x2
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impl Sub<u64x8> for u64x8
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impl<'a> Sub<Wrapping<i16>> for &'a Wrapping<i16>
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impl Sub<u16x2> for u16
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impl Sub<u8x2> for u8x2
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impl Sub<f32x4> for f32
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impl Sub<f64x4> for f64x4
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impl Sub<u32x16> for u32
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impl Sub<i64> for i64
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impl<'a, 'b> Sub<&'a u64> for &'b u64
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impl<'a> Sub<i8> for &'a i8
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impl Sub<u8x2> for u8
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impl<'a, 'b> Sub<&'a f32> for &'b f32
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impl Sub<i8> for i8x2
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impl<'a> Sub<u8> for &'a u8
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impl Sub<u16x4> for u16
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impl<'a> Sub<Wrapping<i8>> for &'a Wrapping<i8>
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impl<'a, 'b> Sub<&'a Wrapping<isize>> for &'b Wrapping<isize>
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impl Sub<i32> for i32
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impl Sub<u8x4> for u8x4
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impl Sub<f64> for f64x2
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impl Sub<i16x8> for i16
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impl Sub<i16> for i16x16
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impl Sub<f32x2> for f32x2
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impl Sub<f64x4> for f64
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impl Sub<i32x16> for i32
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impl Sub<i8> for i8x32
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impl<'a> Sub<Wrapping<u16>> for &'a Wrapping<u16>
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impl Sub<u64> for u64x2
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impl<'a, 'b> Sub<&'a Wrapping<i64>> for &'b Wrapping<i64>
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impl<'a, 'b> Sub<&'a i64> for &'b i64
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impl Sub<u128> for u128
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impl<'a> Sub<&'a i16> for i16
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impl Sub<i32x8> for i32x8
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impl Sub<Wrapping<i64>> for Wrapping<i64>
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impl Sub<u32> for u32
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impl<'a, 'b> Sub<&'a i8> for &'b i8
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impl Sub<i64> for i64x8
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impl<'a> Sub<i64> for &'a i64
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impl Sub<u16> for u16x32
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impl<'a> Sub<&'a Wrapping<i64>> for Wrapping<i64>
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impl<'a, 'b> Sub<&'a Wrapping<u128>> for &'b Wrapping<u128>
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impl Sub<u32x4> for u32
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impl Sub<u32x2> for u32x2
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impl<'a, 'b> Sub<&'a u16> for &'b u16
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impl Sub<i32x16> for i32x16
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impl Sub<i8x2> for i8x2
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impl<'a, 'b> Sub<&'a isize> for &'b isize
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impl Sub<Wrapping<usize>> for Wrapping<usize>
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impl<'a> Sub<Wrapping<isize>> for &'a Wrapping<isize>
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impl Sub<u8x64> for u8x64
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impl Sub<Wrapping<i16>> for Wrapping<i16>
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impl<'a> Sub<&'a f64> for f64
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impl<'a> Sub<&'a Wrapping<i128>> for Wrapping<i128>
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impl<'a, 'b> Sub<&'a u128> for &'b u128
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impl Sub<Wrapping<u32>> for Wrapping<u32>
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impl<'a> Sub<Wrapping<u128>> for &'a Wrapping<u128>
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impl<'a, 'b> Sub<&'a Wrapping<u32>> for &'b Wrapping<u32>
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impl<'a, 'b> Sub<&'a Wrapping<u16>> for &'b Wrapping<u16>
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impl<'a> Sub<&'a Wrapping<u32>> for Wrapping<u32>
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impl Sub<f32> for f32x4
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impl<'a> Sub<i128> for &'a i128
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impl<'a, 'b> Sub<&'a i32> for &'b i32
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impl<'a> Sub<u128> for &'a u128
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impl Sub<u64x4> for u64x4
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impl Sub<u32> for u32x16
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impl Sub<f64> for f64x8
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impl Sub<i64x4> for i64
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impl Sub<u64> for u64x8
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impl Sub<Wrapping<u64>> for Wrapping<u64>
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impl<'a> Sub<&'a Wrapping<isize>> for Wrapping<isize>
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impl Sub<i32x4> for i32
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impl Sub<i8x16> for i8x16
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impl Sub<u32x8> for u32x8
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impl<'a, 'b> Sub<&'a usize> for &'b usize
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impl Sub<i64x2> for i64x2
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impl Sub<i8x2> for i8
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impl<'a> Sub<f32> for &'a f32
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impl Sub<i8x8> for i8x8
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impl Sub<i16x32> for i16x32
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impl Sub<u64> for u64
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impl Sub<f32> for f32x8
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impl Sub<Wrapping<i8>> for Wrapping<i8>
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impl Sub<i8> for i8x8
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impl Sub<u32> for u32x2
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impl Sub<u8> for u8x32
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impl<'a, 'b> Sub<&'a Wrapping<u64>> for &'b Wrapping<u64>
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impl<'a> Sub<isize> for &'a isize
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impl Sub<u8x16> for u8x16
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impl Sub<f32x16> for f32x16
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impl<'a> Sub<f64> for &'a f64
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impl Sub<isize> for isize
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impl Sub<u32x2> for u32
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impl Sub<i16x32> for i16
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impl<'a> Sub<&'a Wrapping<usize>> for Wrapping<usize>
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impl Sub<i16x4> for i16
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impl Sub<u32> for u32x4
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impl<'a> Sub<&'a u64> for u64
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impl Sub<u64x2> for u64
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impl Sub<f64> for f64x4
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impl Sub<Wrapping<u8>> for Wrapping<u8>
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impl Sub<i64> for i64x4
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impl Sub<i16x8> for i16x8
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Implementors