Trait cron::lib::std::ops::Sub

#[lang = "sub"]pub trait Sub<Rhs = Self> {
    type Output;
#[must_use]    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, Copy, Clone, 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 = Self;

    fn sub(self, other: Self) -> Self::Output {
        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

type Output

The resulting type after applying the - operator.

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Required methods

#[must_use]fn sub(self, rhs: Rhs) -> Self::Output

Performs the - operation.

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Implementations on Foreign Types

impl Sub<Duration> for Instant

type Output = Instant

fn sub(self, other: Duration) -> Instant

impl Sub<Duration> for SystemTime

type Output = SystemTime

fn sub(self, dur: Duration) -> SystemTime

impl Sub<Instant> for Instant

type Output = Duration

fn sub(self, other: Instant) -> Duration

impl<'_> Sub<&'_ isize> for isize

type Output = <isize as Sub<isize>>::Output

fn sub(self, other: &isize) -> <isize as Sub<isize>>::Output

impl<'_, '_> Sub<&'_ i32> for &'_ i32

type Output = <i32 as Sub<i32>>::Output

fn sub(self, other: &i32) -> <i32 as Sub<i32>>::Output

impl<'_> Sub<&'_ Wrapping<u16>> for Wrapping<u16>

type Output = <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

fn sub(
    self,
    other: &Wrapping<u16>
) -> <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

impl Sub<i32> for i32

type Output = i32

fn sub(self, other: i32) -> i32

impl<'_, '_> Sub<&'_ i128> for &'_ i128

type Output = <i128 as Sub<i128>>::Output

fn sub(self, other: &i128) -> <i128 as Sub<i128>>::Output

impl<'a> Sub<u8> for &'a u8

type Output = <u8 as Sub<u8>>::Output

fn sub(self, other: u8) -> <u8 as Sub<u8>>::Output

impl<'_, '_> Sub<&'_ u128> for &'_ u128

type Output = <u128 as Sub<u128>>::Output

fn sub(self, other: &u128) -> <u128 as Sub<u128>>::Output

impl Sub<u64> for u64

type Output = u64

fn sub(self, other: u64) -> u64

impl Sub<Wrapping<u16>> for Wrapping<u16>

type Output = Wrapping<u16>

fn sub(self, other: Wrapping<u16>) -> Wrapping<u16>

impl Sub<Wrapping<u8>> for Wrapping<u8>

type Output = Wrapping<u8>

fn sub(self, other: Wrapping<u8>) -> Wrapping<u8>

impl<'a> Sub<i16> for &'a i16

type Output = <i16 as Sub<i16>>::Output

fn sub(self, other: i16) -> <i16 as Sub<i16>>::Output

impl Sub<i16> for i16

type Output = i16

fn sub(self, other: i16) -> i16

impl Sub<Wrapping<u64>> for Wrapping<u64>

type Output = Wrapping<u64>

fn sub(self, other: Wrapping<u64>) -> Wrapping<u64>

impl<'_> Sub<&'_ Wrapping<i32>> for Wrapping<i32>

type Output = <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

fn sub(
    self,
    other: &Wrapping<i32>
) -> <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

impl<'a> Sub<i128> for &'a i128

type Output = <i128 as Sub<i128>>::Output

fn sub(self, other: i128) -> <i128 as Sub<i128>>::Output

impl<'_> Sub<&'_ usize> for usize

type Output = <usize as Sub<usize>>::Output

fn sub(self, other: &usize) -> <usize as Sub<usize>>::Output

impl Sub<u8> for u8

type Output = u8

fn sub(self, other: u8) -> u8

impl<'_> Sub<&'_ i32> for i32

type Output = <i32 as Sub<i32>>::Output

fn sub(self, other: &i32) -> <i32 as Sub<i32>>::Output

impl<'_> Sub<&'_ Wrapping<u8>> for Wrapping<u8>

type Output = <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

fn sub(
    self,
    other: &Wrapping<u8>
) -> <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

impl<'_> Sub<&'_ Wrapping<isize>> for Wrapping<isize>

type Output = <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

fn sub(
    self,
    other: &Wrapping<isize>
) -> <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

impl Sub<u16> for u16

type Output = u16

fn sub(self, other: u16) -> u16

impl Sub<Wrapping<i16>> for Wrapping<i16>

type Output = Wrapping<i16>

fn sub(self, other: Wrapping<i16>) -> Wrapping<i16>

impl<'_> Sub<&'_ Wrapping<u32>> for Wrapping<u32>

type Output = <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

fn sub(
    self,
    other: &Wrapping<u32>
) -> <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<i32>> for &'_ Wrapping<i32>

type Output = <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

fn sub(
    self,
    other: &Wrapping<i32>
) -> <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

impl<'_> Sub<&'_ Wrapping<i16>> for Wrapping<i16>

type Output = <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

fn sub(
    self,
    other: &Wrapping<i16>
) -> <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

impl<'_, '_> Sub<&'_ f64> for &'_ f64

type Output = <f64 as Sub<f64>>::Output

fn sub(self, other: &f64) -> <f64 as Sub<f64>>::Output

impl<'a> Sub<f32> for &'a f32

type Output = <f32 as Sub<f32>>::Output

fn sub(self, other: f32) -> <f32 as Sub<f32>>::Output

impl<'_, '_> Sub<&'_ Wrapping<i16>> for &'_ Wrapping<i16>

type Output = <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

fn sub(
    self,
    other: &Wrapping<i16>
) -> <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u8>> for &'_ Wrapping<u8>

type Output = <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

fn sub(
    self,
    other: &Wrapping<u8>
) -> <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

impl<'_> Sub<&'_ Wrapping<u64>> for Wrapping<u64>

type Output = <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

fn sub(
    self,
    other: &Wrapping<u64>
) -> <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

impl Sub<u128> for u128

type Output = u128

fn sub(self, other: u128) -> u128

impl Sub<isize> for isize

type Output = isize

fn sub(self, other: isize) -> isize

impl<'a> Sub<i32> for &'a i32

type Output = <i32 as Sub<i32>>::Output

fn sub(self, other: i32) -> <i32 as Sub<i32>>::Output

impl Sub<i64> for i64

type Output = i64

fn sub(self, other: i64) -> i64

impl<'a> Sub<Wrapping<u128>> for &'a Wrapping<u128>

type Output = <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

fn sub(
    self,
    other: Wrapping<u128>
) -> <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u32>> for &'_ Wrapping<u32>

type Output = <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

fn sub(
    self,
    other: &Wrapping<u32>
) -> <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

impl<'_> Sub<&'_ Wrapping<i8>> for Wrapping<i8>

type Output = <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

fn sub(
    self,
    other: &Wrapping<i8>
) -> <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<i8>> for &'_ Wrapping<i8>

type Output = <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

fn sub(
    self,
    other: &Wrapping<i8>
) -> <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

impl<'a> Sub<u32> for &'a u32

type Output = <u32 as Sub<u32>>::Output

fn sub(self, other: u32) -> <u32 as Sub<u32>>::Output

impl<'a> Sub<Wrapping<u8>> for &'a Wrapping<u8>

type Output = <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

fn sub(self, other: Wrapping<u8>) -> <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

impl<'_, '_> Sub<&'_ i16> for &'_ i16

type Output = <i16 as Sub<i16>>::Output

fn sub(self, other: &i16) -> <i16 as Sub<i16>>::Output

impl<'_> Sub<&'_ u64> for u64

type Output = <u64 as Sub<u64>>::Output

fn sub(self, other: &u64) -> <u64 as Sub<u64>>::Output

impl<'a> Sub<Wrapping<u16>> for &'a Wrapping<u16>

type Output = <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

fn sub(
    self,
    other: Wrapping<u16>
) -> <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

impl<'_, '_> Sub<&'_ u8> for &'_ u8

type Output = <u8 as Sub<u8>>::Output

fn sub(self, other: &u8) -> <u8 as Sub<u8>>::Output

impl<'_, '_> Sub<&'_ u64> for &'_ u64

type Output = <u64 as Sub<u64>>::Output

fn sub(self, other: &u64) -> <u64 as Sub<u64>>::Output

impl Sub<usize> for usize

type Output = usize

fn sub(self, other: usize) -> usize

impl Sub<Wrapping<u128>> for Wrapping<u128>

type Output = Wrapping<u128>

fn sub(self, other: Wrapping<u128>) -> Wrapping<u128>

impl<'a> Sub<i64> for &'a i64

type Output = <i64 as Sub<i64>>::Output

fn sub(self, other: i64) -> <i64 as Sub<i64>>::Output

impl Sub<f64> for f64

type Output = f64

fn sub(self, other: f64) -> f64

impl<'a> Sub<f64> for &'a f64

type Output = <f64 as Sub<f64>>::Output

fn sub(self, other: f64) -> <f64 as Sub<f64>>::Output

impl Sub<Wrapping<i64>> for Wrapping<i64>

type Output = Wrapping<i64>

fn sub(self, other: Wrapping<i64>) -> Wrapping<i64>

impl<'a> Sub<Wrapping<i128>> for &'a Wrapping<i128>

type Output = <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

fn sub(
    self,
    other: Wrapping<i128>
) -> <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

impl<'_> Sub<&'_ i16> for i16

type Output = <i16 as Sub<i16>>::Output

fn sub(self, other: &i16) -> <i16 as Sub<i16>>::Output

impl<'_, '_> Sub<&'_ u32> for &'_ u32

type Output = <u32 as Sub<u32>>::Output

fn sub(self, other: &u32) -> <u32 as Sub<u32>>::Output

impl<'_, '_> Sub<&'_ u16> for &'_ u16

type Output = <u16 as Sub<u16>>::Output

fn sub(self, other: &u16) -> <u16 as Sub<u16>>::Output

impl<'_, '_> Sub<&'_ f32> for &'_ f32

type Output = <f32 as Sub<f32>>::Output

fn sub(self, other: &f32) -> <f32 as Sub<f32>>::Output

impl<'_> Sub<&'_ u128> for u128

type Output = <u128 as Sub<u128>>::Output

fn sub(self, other: &u128) -> <u128 as Sub<u128>>::Output

impl<'a> Sub<Wrapping<i16>> for &'a Wrapping<i16>

type Output = <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

fn sub(
    self,
    other: Wrapping<i16>
) -> <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

impl<'a> Sub<Wrapping<usize>> for &'a Wrapping<usize>

type Output = <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

fn sub(
    self,
    other: Wrapping<usize>
) -> <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

impl<'a> Sub<u128> for &'a u128

type Output = <u128 as Sub<u128>>::Output

fn sub(self, other: u128) -> <u128 as Sub<u128>>::Output

impl<'a> Sub<Wrapping<i32>> for &'a Wrapping<i32>

type Output = <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

fn sub(
    self,
    other: Wrapping<i32>
) -> <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

impl<'a> Sub<isize> for &'a isize

type Output = <isize as Sub<isize>>::Output

fn sub(self, other: isize) -> <isize as Sub<isize>>::Output

impl<'_> Sub<&'_ u32> for u32

type Output = <u32 as Sub<u32>>::Output

fn sub(self, other: &u32) -> <u32 as Sub<u32>>::Output

impl<'_, '_> Sub<&'_ Wrapping<usize>> for &'_ Wrapping<usize>

type Output = <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

fn sub(
    self,
    other: &Wrapping<usize>
) -> <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

impl<'_> Sub<&'_ Wrapping<u128>> for Wrapping<u128>

type Output = <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

fn sub(
    self,
    other: &Wrapping<u128>
) -> <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

impl<'_, '_> Sub<&'_ isize> for &'_ isize

type Output = <isize as Sub<isize>>::Output

fn sub(self, other: &isize) -> <isize as Sub<isize>>::Output

impl<'_> Sub<&'_ Wrapping<usize>> for Wrapping<usize>

type Output = <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

fn sub(
    self,
    other: &Wrapping<usize>
) -> <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

impl Sub<i128> for i128

type Output = i128

fn sub(self, other: i128) -> i128

impl<'_, '_> Sub<&'_ Wrapping<isize>> for &'_ Wrapping<isize>

type Output = <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

fn sub(
    self,
    other: &Wrapping<isize>
) -> <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

impl<'a> Sub<Wrapping<i64>> for &'a Wrapping<i64>

type Output = <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

fn sub(
    self,
    other: Wrapping<i64>
) -> <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

impl<'_, '_> Sub<&'_ i8> for &'_ i8

type Output = <i8 as Sub<i8>>::Output

fn sub(self, other: &i8) -> <i8 as Sub<i8>>::Output

impl<'_> Sub<&'_ u8> for u8

type Output = <u8 as Sub<u8>>::Output

fn sub(self, other: &u8) -> <u8 as Sub<u8>>::Output

impl<'_> Sub<&'_ u16> for u16

type Output = <u16 as Sub<u16>>::Output

fn sub(self, other: &u16) -> <u16 as Sub<u16>>::Output

impl<'_> Sub<&'_ f32> for f32

type Output = <f32 as Sub<f32>>::Output

fn sub(self, other: &f32) -> <f32 as Sub<f32>>::Output

impl Sub<f32> for f32

type Output = f32

fn sub(self, other: f32) -> f32

impl Sub<Wrapping<isize>> for Wrapping<isize>

type Output = Wrapping<isize>

fn sub(self, other: Wrapping<isize>) -> Wrapping<isize>

impl<'_, '_> Sub<&'_ usize> for &'_ usize

type Output = <usize as Sub<usize>>::Output

fn sub(self, other: &usize) -> <usize as Sub<usize>>::Output

impl<'a> Sub<i8> for &'a i8

type Output = <i8 as Sub<i8>>::Output

fn sub(self, other: i8) -> <i8 as Sub<i8>>::Output

impl<'_> Sub<&'_ f64> for f64

type Output = <f64 as Sub<f64>>::Output

fn sub(self, other: &f64) -> <f64 as Sub<f64>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u128>> for &'_ Wrapping<u128>

type Output = <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

fn sub(
    self,
    other: &Wrapping<u128>
) -> <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

impl Sub<Wrapping<i8>> for Wrapping<i8>

type Output = Wrapping<i8>

fn sub(self, other: Wrapping<i8>) -> Wrapping<i8>

impl<'_, '_> Sub<&'_ Wrapping<i64>> for &'_ Wrapping<i64>

type Output = <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

fn sub(
    self,
    other: &Wrapping<i64>
) -> <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

impl<'_> Sub<&'_ Wrapping<i128>> for Wrapping<i128>

type Output = <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

fn sub(
    self,
    other: &Wrapping<i128>
) -> <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

impl<'a> Sub<u64> for &'a u64

type Output = <u64 as Sub<u64>>::Output

fn sub(self, other: u64) -> <u64 as Sub<u64>>::Output

impl Sub<Wrapping<i32>> for Wrapping<i32>

type Output = Wrapping<i32>

fn sub(self, other: Wrapping<i32>) -> Wrapping<i32>

impl<'a> Sub<usize> for &'a usize

type Output = <usize as Sub<usize>>::Output

fn sub(self, other: usize) -> <usize as Sub<usize>>::Output

impl<'a> Sub<Wrapping<u32>> for &'a Wrapping<u32>

type Output = <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

fn sub(
    self,
    other: Wrapping<u32>
) -> <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

impl Sub<Duration> for Duration

type Output = Duration

fn sub(self, rhs: Duration) -> Duration

impl Sub<i8> for i8

type Output = i8

fn sub(self, other: i8) -> i8

impl Sub<Wrapping<usize>> for Wrapping<usize>

type Output = Wrapping<usize>

fn sub(self, other: Wrapping<usize>) -> Wrapping<usize>

impl<'_> Sub<&'_ i128> for i128

type Output = <i128 as Sub<i128>>::Output

fn sub(self, other: &i128) -> <i128 as Sub<i128>>::Output

impl Sub<Wrapping<u32>> for Wrapping<u32>

type Output = Wrapping<u32>

fn sub(self, other: Wrapping<u32>) -> Wrapping<u32>

impl<'_, '_> Sub<&'_ Wrapping<i128>> for &'_ Wrapping<i128>

type Output = <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

fn sub(
    self,
    other: &Wrapping<i128>
) -> <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

impl<'a> Sub<Wrapping<i8>> for &'a Wrapping<i8>

type Output = <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

fn sub(self, other: Wrapping<i8>) -> <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

impl Sub<u32> for u32

type Output = u32

fn sub(self, other: u32) -> u32

impl<'_> Sub<&'_ Wrapping<i64>> for Wrapping<i64>

type Output = <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

fn sub(
    self,
    other: &Wrapping<i64>
) -> <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

impl<'a> Sub<Wrapping<isize>> for &'a Wrapping<isize>

type Output = <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

fn sub(
    self,
    other: Wrapping<isize>
) -> <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

impl<'_> Sub<&'_ i64> for i64

type Output = <i64 as Sub<i64>>::Output

fn sub(self, other: &i64) -> <i64 as Sub<i64>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u16>> for &'_ Wrapping<u16>

type Output = <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

fn sub(
    self,
    other: &Wrapping<u16>
) -> <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

impl<'_> Sub<&'_ i8> for i8

type Output = <i8 as Sub<i8>>::Output

fn sub(self, other: &i8) -> <i8 as Sub<i8>>::Output

impl<'a> Sub<u16> for &'a u16

type Output = <u16 as Sub<u16>>::Output

fn sub(self, other: u16) -> <u16 as Sub<u16>>::Output

impl Sub<Wrapping<i128>> for Wrapping<i128>

type Output = Wrapping<i128>

fn sub(self, other: Wrapping<i128>) -> Wrapping<i128>

impl<'_, '_> Sub<&'_ i64> for &'_ i64

type Output = <i64 as Sub<i64>>::Output

fn sub(self, other: &i64) -> <i64 as Sub<i64>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u64>> for &'_ Wrapping<u64>

type Output = <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

fn sub(
    self,
    other: &Wrapping<u64>
) -> <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

impl<'a> Sub<Wrapping<u64>> for &'a Wrapping<u64>

type Output = <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

fn sub(
    self,
    other: Wrapping<u64>
) -> <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

impl<'_, '_, T, S> Sub<&'_ HashSet<T, S>> for &'_ HashSet<T, S> where
    S: BuildHasher + Default,
    T: Eq + Hash + Clone, 

type Output = HashSet<T, S>

fn sub(self, rhs: &HashSet<T, S>) -> HashSet<T, S>

Returns the difference of self and rhs as a new HashSet<T, S>.

Examples

use hashbrown::HashSet;

let a: HashSet<_> = vec![1, 2, 3].into_iter().collect();
let b: HashSet<_> = vec![3, 4, 5].into_iter().collect();

let set = &a - &b;

let mut i = 0;
let expected = [1, 2];
for x in &set {
    assert!(expected.contains(x));
    i += 1;
}
assert_eq!(i, expected.len());

impl Sub<Timespec> for Timespec

type Output = Duration

fn sub(self, other: Timespec) -> Duration

impl Sub<Duration> for SteadyTime

type Output = SteadyTime

fn sub(self, other: Duration) -> SteadyTime

impl Sub<Duration> for Timespec

type Output = Timespec

fn sub(self, other: Duration) -> Timespec

impl Sub<Duration> for Tm

type Output = Tm

fn sub(self, other: Duration) -> Tm

The resulting Tm is in UTC.

impl Sub<Tm> for Tm

type Output = Duration

fn sub(self, other: Tm) -> Duration

impl Sub<SteadyTime> for SteadyTime

type Output = Duration

fn sub(self, other: SteadyTime) -> Duration

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Implementors

impl Sub<Duration> for cron::Duration

type Output = Duration

fn sub(self, rhs: Duration) -> Duration

impl Sub<Duration> for NaiveDate

A subtraction of Duration from NaiveDate discards the fractional days, rounding to the closest integral number of days towards Duration::zero(). It is the same as the addition with a negated Duration.

Panics on underflow or overflow. Use NaiveDate::checked_sub_signed to detect that.

Example

use chrono::NaiveDate;
use time::Duration;

let from_ymd = NaiveDate::from_ymd;

assert_eq!(from_ymd(2014, 1, 1) - Duration::zero(),             from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(86399),     from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(-86399),    from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(1),            from_ymd(2013, 12, 31));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(-1),           from_ymd(2014, 1, 2));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(364),          from_ymd(2013, 1, 2));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*4 + 1),    from_ymd(2010, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*400 + 97), from_ymd(1614, 1, 1));

type Output = NaiveDate

fn sub(self, rhs: Duration) -> NaiveDate

impl Sub<Duration> for NaiveDateTime

A subtraction of Duration from NaiveDateTime yields another NaiveDateTime. It is the same as the addition with a negated Duration.

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 on underflow or overflow. Use NaiveDateTime::checked_sub_signed to detect that.

Example

use chrono::NaiveDate;
use time::Duration;

let from_ymd = NaiveDate::from_ymd;

let d = from_ymd(2016, 7, 8);
let hms = |h, m, s| d.and_hms(h, m, s);
assert_eq!(hms(3, 5, 7) - Duration::zero(),             hms(3, 5, 7));
assert_eq!(hms(3, 5, 7) - Duration::seconds(1),         hms(3, 5, 6));
assert_eq!(hms(3, 5, 7) - Duration::seconds(-1),        hms(3, 5, 8));
assert_eq!(hms(3, 5, 7) - Duration::seconds(3600 + 60), hms(2, 4, 7));
assert_eq!(hms(3, 5, 7) - Duration::seconds(86_400),
           from_ymd(2016, 7, 7).and_hms(3, 5, 7));
assert_eq!(hms(3, 5, 7) - Duration::days(365),
           from_ymd(2015, 7, 9).and_hms(3, 5, 7));

let hmsm = |h, m, s, milli| d.and_hms_milli(h, m, s, milli);
assert_eq!(hmsm(3, 5, 7, 450) - Duration::milliseconds(670), hmsm(3, 5, 6, 780));

Leap seconds are handled, but the subtraction assumes that it is the only leap second happened.

let leap = hmsm(3, 5, 59, 1_300);
assert_eq!(leap - Duration::zero(),            hmsm(3, 5, 59, 1_300));
assert_eq!(leap - Duration::milliseconds(200), hmsm(3, 5, 59, 1_100));
assert_eq!(leap - Duration::milliseconds(500), hmsm(3, 5, 59, 800));
assert_eq!(leap - Duration::seconds(60),       hmsm(3, 5, 0, 300));
assert_eq!(leap - Duration::days(1),
           from_ymd(2016, 7, 7).and_hms_milli(3, 6, 0, 300));

type Output = NaiveDateTime

fn sub(self, rhs: Duration) -> NaiveDateTime

impl Sub<Duration> for NaiveTime

A subtraction of Duration from NaiveTime wraps around and never overflows or underflows. In particular the addition ignores integral number of days. It is the same as the addition with a negated Duration.

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

Example

use chrono::NaiveTime;
use time::Duration;

let from_hmsm = NaiveTime::from_hms_milli;

assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::zero(),                  from_hmsm(3, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(1),              from_hmsm(3, 5, 6, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(60 + 5),         from_hmsm(3, 4, 2, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(2*60*60 + 6*60), from_hmsm(0, 59, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::milliseconds(80),        from_hmsm(3, 5, 6, 920));
assert_eq!(from_hmsm(3, 5, 7, 950) - Duration::milliseconds(280),     from_hmsm(3, 5, 7, 670));

The subtraction wraps around.

assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(8*60*60), from_hmsm(19, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::days(800),        from_hmsm(3, 5, 7, 0));

Leap seconds are handled, but the subtraction assumes that it is the only leap second happened.

let leap = from_hmsm(3, 5, 59, 1_300);
assert_eq!(leap - Duration::zero(),            from_hmsm(3, 5, 59, 1_300));
assert_eq!(leap - Duration::milliseconds(200), from_hmsm(3, 5, 59, 1_100));
assert_eq!(leap - Duration::milliseconds(500), from_hmsm(3, 5, 59, 800));
assert_eq!(leap - Duration::seconds(60),       from_hmsm(3, 5, 0, 300));
assert_eq!(leap - Duration::days(1),           from_hmsm(3, 6, 0, 300));

type Output = NaiveTime

fn sub(self, rhs: Duration) -> NaiveTime

impl Sub<FixedOffset> for NaiveDateTime

type Output = NaiveDateTime

fn sub(self, rhs: FixedOffset) -> NaiveDateTime

impl Sub<FixedOffset> for NaiveTime

type Output = NaiveTime

fn sub(self, rhs: FixedOffset) -> NaiveTime

impl Sub<NaiveDate> for NaiveDate

Subtracts another NaiveDate from the current date. Returns a Duration of integral numbers.

This does not overflow or underflow at all, as all possible output fits in the range of Duration.

The implementation is a wrapper around NaiveDate::signed_duration_since.

Example

use chrono::NaiveDate;
use time::Duration;

let from_ymd = NaiveDate::from_ymd;

assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 1), Duration::zero());
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 12, 31), Duration::days(1));
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 2), Duration::days(-1));
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 9, 23), Duration::days(100));
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 1, 1), Duration::days(365));
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2010, 1, 1), Duration::days(365*4 + 1));
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(1614, 1, 1), Duration::days(365*400 + 97));

type Output = Duration

fn sub(self, rhs: NaiveDate) -> Duration

impl Sub<NaiveDateTime> for NaiveDateTime

Subtracts another NaiveDateTime from the current date and time. This does not overflow or underflow at all.

As a part of Chrono's leap second handling, the subtraction assumes that there is no leap second ever, except when any of the NaiveDateTimes themselves represents a leap second in which case the assumption becomes that there are exactly one (or two) leap second(s) ever.

The implementation is a wrapper around NaiveDateTime::signed_duration_since.

Example

use chrono::NaiveDate;
use time::Duration;

let from_ymd = NaiveDate::from_ymd;

let d = from_ymd(2016, 7, 8);
assert_eq!(d.and_hms(3, 5, 7) - d.and_hms(2, 4, 6), Duration::seconds(3600 + 60 + 1));

// July 8 is 190th day in the year 2016
let d0 = from_ymd(2016, 1, 1);
assert_eq!(d.and_hms_milli(0, 7, 6, 500) - d0.and_hms(0, 0, 0),
           Duration::seconds(189 * 86_400 + 7 * 60 + 6) + Duration::milliseconds(500));

Leap seconds are handled, but the subtraction assumes that there were no other leap seconds happened.

let leap = from_ymd(2015, 6, 30).and_hms_milli(23, 59, 59, 1_500);
assert_eq!(leap - from_ymd(2015, 6, 30).and_hms(23, 0, 0),
           Duration::seconds(3600) + Duration::milliseconds(500));
assert_eq!(from_ymd(2015, 7, 1).and_hms(1, 0, 0) - leap,
           Duration::seconds(3600) - Duration::milliseconds(500));

type Output = Duration

fn sub(self, rhs: NaiveDateTime) -> Duration

impl Sub<NaiveTime> for NaiveTime

Subtracts another NaiveTime from the current time. Returns a Duration within +/- 1 day. This does not overflow or underflow at all.

As a part of Chrono's leap second handling, the subtraction assumes that there is no leap second ever, except when any of the NaiveTimes themselves represents a leap second in which case the assumption becomes that there are exactly one (or two) leap second(s) ever.

The implementation is a wrapper around NaiveTime::signed_duration_since.

Example

use chrono::NaiveTime;
use time::Duration;

let from_hmsm = NaiveTime::from_hms_milli;

assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 900), Duration::zero());
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 875), Duration::milliseconds(25));
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 6, 925), Duration::milliseconds(975));
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 0, 900), Duration::seconds(7));
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 0, 7, 900), Duration::seconds(5 * 60));
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(0, 5, 7, 900), Duration::seconds(3 * 3600));
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(4, 5, 7, 900), Duration::seconds(-3600));
assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(2, 4, 6, 800),
           Duration::seconds(3600 + 60 + 1) + Duration::milliseconds(100));

Leap seconds are handled, but the subtraction assumes that there were no other leap seconds happened.

assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 59, 0), Duration::seconds(1));
assert_eq!(from_hmsm(3, 0, 59, 1_500) - from_hmsm(3, 0, 59, 0),
           Duration::milliseconds(1500));
assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 0, 0), Duration::seconds(60));
assert_eq!(from_hmsm(3, 0, 0, 0) - from_hmsm(2, 59, 59, 1_000), Duration::seconds(1));
assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(2, 59, 59, 1_000),
           Duration::seconds(61));

type Output = Duration

fn sub(self, rhs: NaiveTime) -> Duration

impl<'_, '_, T> Sub<&'_ BTreeSet<T>> for &'_ BTreeSet<T> where
    T: Clone + Ord, 

type Output = BTreeSet<T>

fn sub(self, rhs: &BTreeSet<T>) -> BTreeSet<T>

Returns the difference of self and rhs as a new BTreeSet<T>.

Examples

use std::collections::BTreeSet;

let a: BTreeSet<_> = vec![1, 2, 3].into_iter().collect();
let b: BTreeSet<_> = vec![3, 4, 5].into_iter().collect();

let result = &a - &b;
let result_vec: Vec<_> = result.into_iter().collect();
assert_eq!(result_vec, [1, 2]);

impl<'_, '_, T, S> Sub<&'_ HashSet<T, S>> for &'_ cron::lib::std::collections::HashSet<T, S> where
    S: BuildHasher + Default,
    T: Eq + Hash + Clone, 

type Output = HashSet<T, S>

fn sub(self, rhs: &HashSet<T, S>) -> HashSet<T, S>

Returns the difference of self and rhs as a new HashSet<T, S>.

Examples

use std::collections::HashSet;

let a: HashSet<_> = vec![1, 2, 3].into_iter().collect();
let b: HashSet<_> = vec![3, 4, 5].into_iter().collect();

let set = &a - &b;

let mut i = 0;
let expected = [1, 2];
for x in &set {
    assert!(expected.contains(x));
    i += 1;
}
assert_eq!(i, expected.len());

impl<Tz> Sub<Date<Tz>> for Date<Tz> where
    Tz: TimeZone, 

type Output = Duration

fn sub(self, rhs: Date<Tz>) -> Duration

impl<Tz> Sub<DateTime<Tz>> for DateTime<Tz> where
    Tz: TimeZone, 

type Output = Duration

fn sub(self, rhs: DateTime<Tz>) -> Duration

impl<Tz> Sub<Duration> for Date<Tz> where
    Tz: TimeZone, 

type Output = Date<Tz>

fn sub(self, rhs: Duration) -> Date<Tz>

impl<Tz> Sub<Duration> for DateTime<Tz> where
    Tz: TimeZone, 

type Output = DateTime<Tz>

fn sub(self, rhs: Duration) -> DateTime<Tz>

impl<Tz> Sub<FixedOffset> for DateTime<Tz> where
    Tz: TimeZone, 

type Output = DateTime<Tz>

fn sub(self, rhs: FixedOffset) -> DateTime<Tz>

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