Trait Sub

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pub trait Sub<Rhs = Self> {
    type Output;

    // Required method
    fn sub(self, rhs: Rhs) -> Self::Output;
}
Expand description

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 = Self;

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

Required Associated Types§

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type Output

The resulting type after applying the - operator.

Required Methods§

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fn sub(self, rhs: Rhs) -> Self::Output

Performs the - operation.

§Example
assert_eq!(12 - 1, 11);

Implementors§

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impl Sub for f16

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impl Sub for f32

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impl Sub for f64

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impl Sub for f128

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impl Sub for i8

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impl Sub for i16

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impl Sub for i32

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impl Sub for i64

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impl Sub for i128

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impl Sub for isize

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impl Sub for u8

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impl Sub for u16

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impl Sub for u32

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impl Sub for u64

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impl Sub for u128

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impl Sub for usize

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impl Sub for ShutdownState

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impl Sub for SslMode

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impl Sub for SslOptions

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impl Sub for SslSessionCacheMode

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impl Sub for SslVerifyMode

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impl Sub for X509CheckFlags

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impl Sub for X509VerifyFlags

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impl Sub for BigInt

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impl Sub for BigUint

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impl Sub for rama::crypto::dep::x509_parser::prelude::ASN1Time

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type Output = Option<Duration>

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impl Sub for Assume

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impl Sub for Saturating<i8>

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impl Sub for Saturating<i16>

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impl Sub for Saturating<i32>

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impl Sub for Saturating<i64>

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impl Sub for Saturating<i128>

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impl Sub for Saturating<isize>

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impl Sub for Saturating<u8>

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impl Sub for Saturating<u16>

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impl Sub for Saturating<u32>

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impl Sub for Saturating<u64>

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impl Sub for Saturating<u128>

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impl Sub for Saturating<usize>

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impl Sub for Wrapping<i8>

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impl Sub for Wrapping<i16>

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impl Sub for Wrapping<i32>

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impl Sub for Wrapping<i64>

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impl Sub for Wrapping<i128>

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impl Sub for Wrapping<isize>

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impl Sub for Wrapping<u8>

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impl Sub for Wrapping<u16>

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impl Sub for Wrapping<u32>

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impl Sub for Wrapping<u64>

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impl Sub for Wrapping<u128>

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impl Sub for Wrapping<usize>

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impl Sub for core::time::Duration

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impl Sub for std::time::Instant

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impl Sub for NaiveDate

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

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

The implementation is a wrapper around NaiveDate::signed_duration_since.

§Example

use chrono::{NaiveDate, TimeDelta};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 1), TimeDelta::zero());
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 12, 31), TimeDelta::try_days(1).unwrap());
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2014, 1, 2), TimeDelta::try_days(-1).unwrap());
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 9, 23), TimeDelta::try_days(100).unwrap());
assert_eq!(from_ymd(2014, 1, 1) - from_ymd(2013, 1, 1), TimeDelta::try_days(365).unwrap());
assert_eq!(
    from_ymd(2014, 1, 1) - from_ymd(2010, 1, 1),
    TimeDelta::try_days(365 * 4 + 1).unwrap()
);
assert_eq!(
    from_ymd(2014, 1, 1) - from_ymd(1614, 1, 1),
    TimeDelta::try_days(365 * 400 + 97).unwrap()
);
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impl Sub 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, TimeDelta};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

let d = from_ymd(2016, 7, 8);
assert_eq!(
    d.and_hms_opt(3, 5, 7).unwrap() - d.and_hms_opt(2, 4, 6).unwrap(),
    TimeDelta::try_seconds(3600 + 60 + 1).unwrap()
);

// July 8 is 190th day in the year 2016
let d0 = from_ymd(2016, 1, 1);
assert_eq!(
    d.and_hms_milli_opt(0, 7, 6, 500).unwrap() - d0.and_hms_opt(0, 0, 0).unwrap(),
    TimeDelta::try_seconds(189 * 86_400 + 7 * 60 + 6).unwrap()
        + TimeDelta::try_milliseconds(500).unwrap()
);

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

let leap = from_ymd(2015, 6, 30).and_hms_milli_opt(23, 59, 59, 1_500).unwrap();
assert_eq!(
    leap - from_ymd(2015, 6, 30).and_hms_opt(23, 0, 0).unwrap(),
    TimeDelta::try_seconds(3600).unwrap() + TimeDelta::try_milliseconds(500).unwrap()
);
assert_eq!(
    from_ymd(2015, 7, 1).and_hms_opt(1, 0, 0).unwrap() - leap,
    TimeDelta::try_seconds(3600).unwrap() - TimeDelta::try_milliseconds(500).unwrap()
);
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impl Sub for NaiveTime

Subtracts another NaiveTime from the current time. Returns a TimeDelta 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, TimeDelta};

let from_hmsm = |h, m, s, milli| NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap();

assert_eq!(from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 900), TimeDelta::zero());
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 7, 875),
    TimeDelta::try_milliseconds(25).unwrap()
);
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 6, 925),
    TimeDelta::try_milliseconds(975).unwrap()
);
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(3, 5, 0, 900),
    TimeDelta::try_seconds(7).unwrap()
);
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(3, 0, 7, 900),
    TimeDelta::try_seconds(5 * 60).unwrap()
);
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(0, 5, 7, 900),
    TimeDelta::try_seconds(3 * 3600).unwrap()
);
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(4, 5, 7, 900),
    TimeDelta::try_seconds(-3600).unwrap()
);
assert_eq!(
    from_hmsm(3, 5, 7, 900) - from_hmsm(2, 4, 6, 800),
    TimeDelta::try_seconds(3600 + 60 + 1).unwrap() + TimeDelta::try_milliseconds(100).unwrap()
);

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), TimeDelta::try_seconds(1).unwrap());
assert_eq!(from_hmsm(3, 0, 59, 1_500) - from_hmsm(3, 0, 59, 0),
           TimeDelta::try_milliseconds(1500).unwrap());
assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(3, 0, 0, 0), TimeDelta::try_seconds(60).unwrap());
assert_eq!(from_hmsm(3, 0, 0, 0) - from_hmsm(2, 59, 59, 1_000), TimeDelta::try_seconds(1).unwrap());
assert_eq!(from_hmsm(3, 0, 59, 1_000) - from_hmsm(2, 59, 59, 1_000),
           TimeDelta::try_seconds(61).unwrap());
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impl Sub for TimeDelta

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impl Sub for ATerm

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impl Sub for Z0

Z0 - Z0 = Z0

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impl Sub for UTerm

UTerm - UTerm = UTerm

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impl Sub for ASN1Time

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type Output = Option<Duration>

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impl Sub for Date

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type Output = Duration

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impl Sub for Duration

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type Output = Duration

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impl Sub for Instant

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impl Sub for OffsetDateTime

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type Output = Duration

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impl Sub for PrimitiveDateTime

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type Output = Duration

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impl Sub for Ready

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type Output = Ready

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impl Sub for Time

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type Output = Duration

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impl Sub for UtcDateTime

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type Output = Duration

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impl Sub<&f16> for &f16

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impl Sub<&f16> for f16

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impl Sub<&f32> for &f32

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impl Sub<&f32> for f32

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impl Sub<&f64> for &f64

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impl Sub<&f64> for f64

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impl Sub<&f128> for &f128

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impl Sub<&f128> for f128

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impl Sub<&i8> for &i8

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impl Sub<&i8> for &BigInt

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impl Sub<&i8> for i8

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impl Sub<&i8> for BigInt

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impl Sub<&i16> for &i16

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impl Sub<&i16> for &BigInt

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impl Sub<&i16> for i16

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impl Sub<&i16> for BigInt

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impl Sub<&i32> for &i32

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impl Sub<&i32> for &BigInt

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impl Sub<&i32> for i32

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impl Sub<&i32> for BigInt

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impl Sub<&i64> for &i64

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impl Sub<&i64> for &BigInt

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impl Sub<&i64> for i64

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impl Sub<&i64> for BigInt

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impl Sub<&i128> for &i128

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impl Sub<&i128> for &BigInt

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impl Sub<&i128> for i128

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impl Sub<&i128> for BigInt

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impl Sub<&isize> for &isize

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impl Sub<&isize> for &BigInt

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impl Sub<&isize> for isize

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impl Sub<&isize> for BigInt

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impl Sub<&u8> for &u8

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impl Sub<&u8> for &BigInt

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impl Sub<&u8> for &BigUint

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impl Sub<&u8> for u8

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impl Sub<&u8> for BigInt

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impl Sub<&u8> for BigUint

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impl Sub<&u16> for &u16

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impl Sub<&u16> for &BigInt

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impl Sub<&u16> for &BigUint

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impl Sub<&u16> for u16

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impl Sub<&u16> for BigInt

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impl Sub<&u16> for BigUint

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impl Sub<&u32> for &u32

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impl Sub<&u32> for &BigInt

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impl Sub<&u32> for &BigUint

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impl Sub<&u32> for u32

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impl Sub<&u32> for BigInt

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impl Sub<&u32> for BigUint

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impl Sub<&u64> for &u64

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impl Sub<&u64> for &BigInt

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impl Sub<&u64> for &BigUint

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impl Sub<&u64> for u64

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impl Sub<&u64> for BigInt

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impl Sub<&u64> for BigUint

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impl Sub<&u128> for &u128

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impl Sub<&u128> for &BigInt

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impl Sub<&u128> for &BigUint

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impl Sub<&u128> for u128

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impl Sub<&u128> for BigInt

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impl Sub<&u128> for BigUint

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impl Sub<&usize> for &usize

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impl Sub<&usize> for &BigInt

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impl Sub<&usize> for &BigUint

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impl Sub<&usize> for usize

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impl Sub<&usize> for BigInt

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impl Sub<&usize> for BigUint

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impl Sub<&BigNumRef> for &BigNumRef

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impl Sub<&BigInt> for &i8

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impl Sub<&BigInt> for &i16

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impl Sub<&BigInt> for &i32

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impl Sub<&BigInt> for &i64

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impl Sub<&BigInt> for &i128

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impl Sub<&BigInt> for &isize

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impl Sub<&BigInt> for &u8

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impl Sub<&BigInt> for &u16

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impl Sub<&BigInt> for &u32

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impl Sub<&BigInt> for &u64

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impl Sub<&BigInt> for &u128

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impl Sub<&BigInt> for &usize

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impl Sub<&BigInt> for &BigInt

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impl Sub<&BigInt> for i8

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impl Sub<&BigInt> for i16

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impl Sub<&BigInt> for i32

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impl Sub<&BigInt> for i64

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impl Sub<&BigInt> for i128

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impl Sub<&BigInt> for isize

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impl Sub<&BigInt> for u8

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impl Sub<&BigInt> for u16

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impl Sub<&BigInt> for u32

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impl Sub<&BigInt> for u64

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impl Sub<&BigInt> for u128

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impl Sub<&BigInt> for usize

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impl Sub<&BigInt> for BigInt

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impl Sub<&BigUint> for &u8

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impl Sub<&BigUint> for &u16

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impl Sub<&BigUint> for &u32

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impl Sub<&BigUint> for &u64

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impl Sub<&BigUint> for &u128

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impl Sub<&BigUint> for &usize

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impl Sub<&BigUint> for &BigUint

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impl Sub<&BigUint> for u8

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impl Sub<&BigUint> for u16

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impl Sub<&BigUint> for u32

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impl Sub<&BigUint> for u64

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impl Sub<&BigUint> for u128

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impl Sub<&BigUint> for usize

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impl Sub<&BigUint> for BigUint

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impl Sub<&Saturating<i8>> for &Saturating<i8>

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impl Sub<&Saturating<i8>> for Saturating<i8>

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impl Sub<&Saturating<i16>> for &Saturating<i16>

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impl Sub<&Saturating<i16>> for Saturating<i16>

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impl Sub<&Saturating<i32>> for &Saturating<i32>

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impl Sub<&Saturating<i32>> for Saturating<i32>

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impl Sub<&Saturating<i64>> for &Saturating<i64>

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impl Sub<&Saturating<i64>> for Saturating<i64>

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impl Sub<&Saturating<i128>> for &Saturating<i128>

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impl Sub<&Saturating<i128>> for Saturating<i128>

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impl Sub<&Saturating<isize>> for &Saturating<isize>

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impl Sub<&Saturating<isize>> for Saturating<isize>

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impl Sub<&Saturating<u8>> for &Saturating<u8>

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impl Sub<&Saturating<u8>> for Saturating<u8>

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impl Sub<&Saturating<u16>> for &Saturating<u16>

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impl Sub<&Saturating<u16>> for Saturating<u16>

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impl Sub<&Saturating<u32>> for &Saturating<u32>

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impl Sub<&Saturating<u32>> for Saturating<u32>

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impl Sub<&Saturating<u64>> for &Saturating<u64>

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impl Sub<&Saturating<u64>> for Saturating<u64>

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impl Sub<&Saturating<u128>> for &Saturating<u128>

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impl Sub<&Saturating<u128>> for Saturating<u128>

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impl Sub<&Saturating<usize>> for &Saturating<usize>

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impl Sub<&Saturating<usize>> for Saturating<usize>

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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impl Sub<i8> for &BigInt

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impl Sub<i8> for BigInt

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impl Sub<i16> for &BigInt

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impl Sub<i16> for BigInt

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impl Sub<i32> for &BigInt

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impl Sub<i32> for BigInt

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impl Sub<i64> for &BigInt

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impl Sub<i64> for BigInt

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impl Sub<i128> for &BigInt

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impl Sub<i128> for BigInt

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impl Sub<isize> for &BigInt

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impl Sub<isize> for BigInt

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impl Sub<u8> for &BigInt

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impl Sub<u8> for &BigUint

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impl Sub<u8> for BigInt

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impl Sub<u8> for BigUint

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impl Sub<u16> for &BigInt

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impl Sub<u16> for &BigUint

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impl Sub<u16> for BigInt

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impl Sub<u16> for BigUint

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impl Sub<u32> for &BigInt

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impl Sub<u32> for &BigUint

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impl Sub<u32> for BigInt

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impl Sub<u32> for BigUint

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impl Sub<u64> for &BigInt

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impl Sub<u64> for &BigUint

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impl Sub<u64> for BigInt

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impl Sub<u64> for BigUint

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impl Sub<u128> for &BigInt

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impl Sub<u128> for &BigUint

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impl Sub<u128> for BigInt

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impl Sub<u128> for BigUint

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impl Sub<usize> for &BigInt

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impl Sub<usize> for &BigUint

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impl Sub<usize> for BigInt

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impl Sub<usize> for BigUint

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impl Sub<BigInt> for &i8

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impl Sub<BigInt> for &i16

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impl Sub<BigInt> for &i32

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impl Sub<BigInt> for &i64

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impl Sub<BigInt> for &i128

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impl Sub<BigInt> for &isize

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impl Sub<BigInt> for &u8

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impl Sub<BigInt> for &u16

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impl Sub<BigInt> for &u32

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impl Sub<BigInt> for &u64

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impl Sub<BigInt> for &u128

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impl Sub<BigInt> for &usize

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impl Sub<BigInt> for &BigInt

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impl Sub<BigInt> for i8

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impl Sub<BigInt> for i16

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impl Sub<BigInt> for i32

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impl Sub<BigInt> for i64

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impl Sub<BigInt> for i128

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impl Sub<BigInt> for isize

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impl Sub<BigInt> for u8

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impl Sub<BigInt> for u16

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impl Sub<BigInt> for u32

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impl Sub<BigInt> for u64

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impl Sub<BigInt> for u128

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impl Sub<BigInt> for usize

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impl Sub<BigUint> for &u8

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impl Sub<BigUint> for &u16

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impl Sub<BigUint> for &u32

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impl Sub<BigUint> for &u64

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impl Sub<BigUint> for &u128

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impl Sub<BigUint> for &usize

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impl Sub<BigUint> for &BigUint

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impl Sub<BigUint> for u8

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impl Sub<BigUint> for u16

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impl Sub<BigUint> for u32

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impl Sub<BigUint> for u64

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impl Sub<BigUint> for u128

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impl Sub<BigUint> for usize

1.8.0 · Source§

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

1.8.0 · Source§

impl Sub<Duration> for SystemTime

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impl Sub<Duration> for NaiveDateTime

Subtract std::time::Duration from NaiveDateTime.

As a part of Chrono’s [leap second handling] the subtraction 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_sub_signed to get an Option instead.

Source§

impl Sub<Duration> for NaiveTime

Subtract std::time::Duration from NaiveTime.

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

§

impl Sub<Duration> for Date

§

type Output = Date

§

impl Sub<Duration> for Duration

§

type Output = Duration

§

impl Sub<Duration> for Instant

§

type Output = Instant

§

impl Sub<Duration> for OffsetDateTime

§

type Output = OffsetDateTime

§

impl Sub<Duration> for PrimitiveDateTime

§

type Output = PrimitiveDateTime

§

impl Sub<Duration> for Time

§

type Output = Time

§

impl Sub<Duration> for UtcDateTime

§

type Output = UtcDateTime

§

impl Sub<SystemTime> for OffsetDateTime

§

type Output = Duration

§

impl Sub<SystemTime> for UtcDateTime

§

type Output = Duration

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impl Sub<Months> for NaiveDate

Subtract Months from NaiveDate.

The result will be clamped to valid days in the resulting month, see checked_sub_months for details.

§Panics

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

§Example

use chrono::{Months, NaiveDate};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

assert_eq!(from_ymd(2014, 1, 1) - Months::new(11), from_ymd(2013, 2, 1));
assert_eq!(from_ymd(2014, 1, 1) - Months::new(12), from_ymd(2013, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Months::new(13), from_ymd(2012, 12, 1));
Source§

impl Sub<Months> for NaiveDateTime

Subtract Months from NaiveDateTime.

The result will be clamped to valid days in the resulting month, see NaiveDateTime::checked_sub_months for details.

§Panics

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

§Example

use chrono::{Months, NaiveDate};

assert_eq!(
    NaiveDate::from_ymd_opt(2014, 01, 01).unwrap().and_hms_opt(01, 00, 00).unwrap()
        - Months::new(11),
    NaiveDate::from_ymd_opt(2013, 02, 01).unwrap().and_hms_opt(01, 00, 00).unwrap()
);
assert_eq!(
    NaiveDate::from_ymd_opt(2014, 01, 01).unwrap().and_hms_opt(00, 02, 00).unwrap()
        - Months::new(12),
    NaiveDate::from_ymd_opt(2013, 01, 01).unwrap().and_hms_opt(00, 02, 00).unwrap()
);
assert_eq!(
    NaiveDate::from_ymd_opt(2014, 01, 01).unwrap().and_hms_opt(00, 00, 03).unwrap()
        - Months::new(13),
    NaiveDate::from_ymd_opt(2012, 12, 01).unwrap().and_hms_opt(00, 00, 03).unwrap()
);
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impl Sub<Days> for NaiveDate

Subtract Days from NaiveDate.

§Panics

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

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impl Sub<Days> for NaiveDateTime

Subtract Days from NaiveDateTime.

§Panics

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

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impl Sub<FixedOffset> for NaiveDateTime

Subtract FixedOffset from NaiveDateTime.

§Panics

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

Source§

impl Sub<FixedOffset> for NaiveTime

Subtract FixedOffset from NaiveTime.

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

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impl Sub<TimeDelta> for NaiveDate

Subtract TimeDelta from NaiveDate.

This discards the fractional days in TimeDelta, rounding to the closest integral number of days towards TimeDelta::zero(). It is the same as the addition with a negated TimeDelta.

§Panics

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

§Example

use chrono::{NaiveDate, TimeDelta};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

assert_eq!(from_ymd(2014, 1, 1) - TimeDelta::zero(), from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - TimeDelta::try_seconds(86399).unwrap(), from_ymd(2014, 1, 1));
assert_eq!(
    from_ymd(2014, 1, 1) - TimeDelta::try_seconds(-86399).unwrap(),
    from_ymd(2014, 1, 1)
);
assert_eq!(from_ymd(2014, 1, 1) - TimeDelta::try_days(1).unwrap(), from_ymd(2013, 12, 31));
assert_eq!(from_ymd(2014, 1, 1) - TimeDelta::try_days(-1).unwrap(), from_ymd(2014, 1, 2));
assert_eq!(from_ymd(2014, 1, 1) - TimeDelta::try_days(364).unwrap(), from_ymd(2013, 1, 2));
assert_eq!(
    from_ymd(2014, 1, 1) - TimeDelta::try_days(365 * 4 + 1).unwrap(),
    from_ymd(2010, 1, 1)
);
assert_eq!(
    from_ymd(2014, 1, 1) - TimeDelta::try_days(365 * 400 + 97).unwrap(),
    from_ymd(1614, 1, 1)
);
Source§

impl Sub<TimeDelta> for NaiveDateTime

Subtract TimeDelta from NaiveDateTime.

This is the same as the addition with a negated TimeDelta.

As a part of Chrono’s leap second handling the subtraction 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_sub_signed to get an Option instead.

§Example

use chrono::{NaiveDate, TimeDelta};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

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

let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
assert_eq!(hmsm(3, 5, 7, 450) - TimeDelta::try_milliseconds(670).unwrap(), 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 - TimeDelta::zero(), hmsm(3, 5, 59, 1_300));
assert_eq!(leap - TimeDelta::try_milliseconds(200).unwrap(), hmsm(3, 5, 59, 1_100));
assert_eq!(leap - TimeDelta::try_milliseconds(500).unwrap(), hmsm(3, 5, 59, 800));
assert_eq!(leap - TimeDelta::try_seconds(60).unwrap(), hmsm(3, 5, 0, 300));
assert_eq!(leap - TimeDelta::try_days(1).unwrap(),
           from_ymd(2016, 7, 7).and_hms_milli_opt(3, 6, 0, 300).unwrap());
Source§

impl Sub<TimeDelta> for NaiveTime

Subtract TimeDelta from NaiveTime.

This wraps around and never overflows or underflows. In particular the subtraction ignores integral number of days. This is the same as addition with a negated TimeDelta.

As a part of Chrono’s leap second handling, the subtraction 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, TimeDelta};

let from_hmsm = |h, m, s, milli| NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap();

assert_eq!(from_hmsm(3, 5, 7, 0) - TimeDelta::zero(), from_hmsm(3, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - TimeDelta::try_seconds(1).unwrap(), from_hmsm(3, 5, 6, 0));
assert_eq!(
    from_hmsm(3, 5, 7, 0) - TimeDelta::try_seconds(60 + 5).unwrap(),
    from_hmsm(3, 4, 2, 0)
);
assert_eq!(
    from_hmsm(3, 5, 7, 0) - TimeDelta::try_seconds(2 * 60 * 60 + 6 * 60).unwrap(),
    from_hmsm(0, 59, 7, 0)
);
assert_eq!(
    from_hmsm(3, 5, 7, 0) - TimeDelta::try_milliseconds(80).unwrap(),
    from_hmsm(3, 5, 6, 920)
);
assert_eq!(
    from_hmsm(3, 5, 7, 950) - TimeDelta::try_milliseconds(280).unwrap(),
    from_hmsm(3, 5, 7, 670)
);

The subtraction wraps around.

assert_eq!(from_hmsm(3, 5, 7, 0) - TimeDelta::try_seconds(8*60*60).unwrap(), from_hmsm(19, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - TimeDelta::try_days(800).unwrap(), 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 - TimeDelta::zero(), from_hmsm(3, 5, 59, 1_300));
assert_eq!(leap - TimeDelta::try_milliseconds(200).unwrap(), from_hmsm(3, 5, 59, 1_100));
assert_eq!(leap - TimeDelta::try_milliseconds(500).unwrap(), from_hmsm(3, 5, 59, 800));
assert_eq!(leap - TimeDelta::try_seconds(60).unwrap(), from_hmsm(3, 5, 0, 300));
assert_eq!(leap - TimeDelta::try_days(1).unwrap(), from_hmsm(3, 6, 0, 300));
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impl Sub<B0> for UTerm

UTerm - B0 = Term

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impl Sub<B1> for UInt<UTerm, B1>

UInt<UTerm, B1> - B1 = UTerm

§

impl Sub<Duration> for core::time::Duration

§

type Output = Duration

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

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impl Sub<Duration> for SystemTime

§

impl Sub<Duration> for Date

§

type Output = Date

§

impl Sub<Duration> for OffsetDateTime

§

type Output = OffsetDateTime

§

impl Sub<Duration> for PrimitiveDateTime

§

type Output = PrimitiveDateTime

§

impl Sub<Duration> for Time

§

type Output = Time

§

impl Sub<Duration> for UtcDateTime

§

type Output = UtcDateTime

§

impl Sub<OffsetDateTime> for SystemTime

§

type Output = Duration

§

impl Sub<OffsetDateTime> for UtcDateTime

§

type Output = Duration

§

impl Sub<UtcDateTime> for SystemTime

§

type Output = Duration

§

impl Sub<UtcDateTime> for OffsetDateTime

§

type Output = Duration

1.0.0 · Source§

impl<'a> Sub<f16> for &'a f16

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

impl<'a> Sub<f128> for &'a f128

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.0.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.74.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

1.14.0 · Source§

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

§

impl<'a, 'b> Sub<&'b BigNum> for &'a BigNum

§

impl<'a, 'b> Sub<&'b BigNum> for &'a BigNumRef

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impl<'a, 'b> Sub<&'b BigNumRef> for &'a BigNum

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impl<'lhs, 'rhs, T, const N: usize> Sub<&'rhs Simd<T, N>> for &'lhs Simd<T, N>
where T: SimdElement, Simd<T, N>: Sub<Output = Simd<T, N>>, LaneCount<N>: SupportedLaneCount,

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type Output = Simd<T, N>

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impl<O> Sub for F32<O>
where O: ByteOrder,

§

type Output = F32<O>

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impl<O> Sub for F64<O>
where O: ByteOrder,

§

type Output = F64<O>

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impl<O> Sub for I16<O>
where O: ByteOrder,

§

type Output = I16<O>

§

impl<O> Sub for I32<O>
where O: ByteOrder,

§

type Output = I32<O>

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impl<O> Sub for I64<O>
where O: ByteOrder,

§

type Output = I64<O>

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impl<O> Sub for I128<O>
where O: ByteOrder,

§

type Output = I128<O>

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impl<O> Sub for Isize<O>
where O: ByteOrder,

§

type Output = Isize<O>

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impl<O> Sub for U16<O>
where O: ByteOrder,

§

type Output = U16<O>

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impl<O> Sub for U32<O>
where O: ByteOrder,

§

type Output = U32<O>

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impl<O> Sub for U64<O>
where O: ByteOrder,

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type Output = U64<O>

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impl<O> Sub for U128<O>
where O: ByteOrder,

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type Output = U128<O>

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impl<O> Sub for Usize<O>
where O: ByteOrder,

§

type Output = Usize<O>

§

impl<O> Sub<f32> for F32<O>
where O: ByteOrder,

§

type Output = F32<O>

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impl<O> Sub<f64> for F64<O>
where O: ByteOrder,

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type Output = F64<O>

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impl<O> Sub<i16> for I16<O>
where O: ByteOrder,

§

type Output = I16<O>

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impl<O> Sub<i32> for I32<O>
where O: ByteOrder,

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type Output = I32<O>

§

impl<O> Sub<i64> for I64<O>
where O: ByteOrder,

§

type Output = I64<O>

§

impl<O> Sub<i128> for I128<O>
where O: ByteOrder,

§

type Output = I128<O>

§

impl<O> Sub<isize> for Isize<O>
where O: ByteOrder,

§

type Output = Isize<O>

§

impl<O> Sub<u16> for U16<O>
where O: ByteOrder,

§

type Output = U16<O>

§

impl<O> Sub<u32> for U32<O>
where O: ByteOrder,

§

type Output = U32<O>

§

impl<O> Sub<u64> for U64<O>
where O: ByteOrder,

§

type Output = U64<O>

§

impl<O> Sub<u128> for U128<O>
where O: ByteOrder,

§

type Output = U128<O>

§

impl<O> Sub<usize> for Usize<O>
where O: ByteOrder,

§

type Output = Usize<O>

§

impl<O> Sub<F32<O>> for f32
where O: ByteOrder,

§

type Output = F32<O>

§

impl<O> Sub<F64<O>> for f64
where O: ByteOrder,

§

type Output = F64<O>

§

impl<O> Sub<I16<O>> for i16
where O: ByteOrder,

§

type Output = I16<O>

§

impl<O> Sub<I32<O>> for i32
where O: ByteOrder,

§

type Output = I32<O>

§

impl<O> Sub<I64<O>> for i64
where O: ByteOrder,

§

type Output = I64<O>

§

impl<O> Sub<I128<O>> for i128
where O: ByteOrder,

§

type Output = I128<O>

§

impl<O> Sub<Isize<O>> for isize
where O: ByteOrder,

§

type Output = Isize<O>

§

impl<O> Sub<U16<O>> for u16
where O: ByteOrder,

§

type Output = U16<O>

§

impl<O> Sub<U32<O>> for u32
where O: ByteOrder,

§

type Output = U32<O>

§

impl<O> Sub<U64<O>> for u64
where O: ByteOrder,

§

type Output = U64<O>

§

impl<O> Sub<U128<O>> for u128
where O: ByteOrder,

§

type Output = U128<O>

§

impl<O> Sub<Usize<O>> for usize
where O: ByteOrder,

§

type Output = Usize<O>

1.0.0 · Source§

impl<T, A> Sub<&BTreeSet<T, A>> for &BTreeSet<T, A>
where T: Ord + Clone, A: Allocator + Clone,

§

impl<T, S1, S2> Sub<&IndexSet<T, S2>> for &IndexSet<T, S1>
where T: Eq + Hash + Clone, S1: BuildHasher + Default, S2: BuildHasher,

§

type Output = IndexSet<T, S1>

1.0.0 · Source§

impl<T, S> Sub<&HashSet<T, S>> for &rama::crypto::dep::x509_parser::prelude::asn1_rs::nom::lib::std::collections::HashSet<T, S>
where T: Eq + Hash + Clone, S: BuildHasher + Default,

Source§

type Output = HashSet<T, S>

§

impl<T, S, A> Sub<&HashSet<T, S, A>> for &HashSet<T, S, A>
where T: Eq + Hash + Clone, S: BuildHasher + Default, A: Allocator + Default,

§

type Output = HashSet<T, S, A>

Source§

impl<T, const N: usize> Sub<&Simd<T, N>> for Simd<T, N>
where T: SimdElement, Simd<T, N>: Sub<Output = Simd<T, N>>, LaneCount<N>: SupportedLaneCount,

Source§

type Output = Simd<T, N>

Source§

impl<T, const N: usize> Sub<Simd<T, N>> for &Simd<T, N>
where T: SimdElement, Simd<T, N>: Sub<Output = Simd<T, N>>, LaneCount<N>: SupportedLaneCount,

Source§

type Output = Simd<T, N>

Source§

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

Source§

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

Source§

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

Source§

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

Subtract std::time::Duration from DateTime.

As a part of Chrono’s [leap second handling] the subtraction assumes that there is no leap second ever, except when the DateTime 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_sub_signed to get an Option instead.

Source§

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

Subtract Months from DateTime.

The result will be clamped to valid days in the resulting month, see DateTime<Tz>::checked_sub_months for details.

§Panics

Panics if:

  • The resulting date would be out of range.
  • The local time at the resulting date does not exist or is ambiguous, for example during a daylight saving time transition.

Strongly consider using DateTime<Tz>::checked_sub_months to get an Option instead.

Source§

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

Subtract Days from DateTime.

§Panics

Panics if:

  • The resulting date would be out of range.
  • The local time at the resulting date does not exist or is ambiguous, for example during a daylight saving time transition.

Strongly consider using DateTime<Tz>::checked_sub_days to get an Option instead.

Source§

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

Subtract FixedOffset from the datetime value of DateTime (offset remains unchanged).

§Panics

Panics if the resulting date would be out of range.

Source§

impl<Tz> Sub<TimeDelta> for chrono::date::Date<Tz>
where Tz: TimeZone,

Source§

type Output = Date<Tz>

Source§

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

Subtract TimeDelta from DateTime.

This is the same as the addition with a negated TimeDelta.

As a part of Chrono’s [leap second handling] the subtraction assumes that there is no leap second ever, except when the DateTime 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_sub_signed to get an Option instead.

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impl<U> Sub<B1> for UInt<U, B0>
where U: Unsigned + Sub<B1>, <U as Sub<B1>>::Output: Unsigned,

UInt<U, B0> - B1 = UInt<U - B1, B1>

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type Output = UInt<<U as Sub<B1>>::Output, B1>

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impl<U> Sub<NInt<U>> for Z0
where U: Unsigned + NonZero,

Z0 - N = P

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impl<U> Sub<PInt<U>> for Z0
where U: Unsigned + NonZero,

Z0 - P = N

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impl<U> Sub<Z0> for NInt<U>
where U: Unsigned + NonZero,

NInt - Z0 = NInt

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impl<U> Sub<Z0> for PInt<U>
where U: Unsigned + NonZero,

PInt - Z0 = PInt

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impl<U, B> Sub<B0> for UInt<U, B>
where U: Unsigned, B: Bit,

UInt - B0 = UInt

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type Output = UInt<U, B>

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impl<U, B> Sub<B1> for UInt<UInt<U, B>, B1>
where U: Unsigned, B: Bit,

UInt<U, B1> - B1 = UInt<U, B0>

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type Output = UInt<UInt<U, B>, B0>

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impl<Ul, Bl, Ur> Sub<Ur> for UInt<Ul, Bl>
where Ul: Unsigned, Bl: Bit, Ur: Unsigned, UInt<Ul, Bl>: PrivateSub<Ur>, <UInt<Ul, Bl> as PrivateSub<Ur>>::Output: Trim,

Subtracting unsigned integers. We just do our PrivateSub and then Trim the output.

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type Output = <<UInt<Ul, Bl> as PrivateSub<Ur>>::Output as Trim>::Output

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impl<Ul, Ur> Sub<NInt<Ur>> for NInt<Ul>
where Ul: Unsigned + NonZero, Ur: Unsigned + NonZero + Cmp<Ul> + PrivateIntegerAdd<<Ur as Cmp<Ul>>::Output, Ul>,

N(Ul) - N(Ur): We resolve this with our PrivateAdd

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type Output = <Ur as PrivateIntegerAdd<<Ur as Cmp<Ul>>::Output, Ul>>::Output

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impl<Ul, Ur> Sub<NInt<Ur>> for PInt<Ul>
where Ul: Unsigned + NonZero + Add<Ur>, Ur: Unsigned + NonZero, <Ul as Add<Ur>>::Output: Unsigned + NonZero,

P(Ul) - N(Ur) = P(Ul + Ur)

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type Output = PInt<<Ul as Add<Ur>>::Output>

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impl<Ul, Ur> Sub<PInt<Ur>> for NInt<Ul>
where Ul: Unsigned + NonZero + Add<Ur>, Ur: Unsigned + NonZero, <Ul as Add<Ur>>::Output: Unsigned + NonZero,

N(Ul) - P(Ur) = N(Ul + Ur)

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type Output = NInt<<Ul as Add<Ur>>::Output>

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impl<Ul, Ur> Sub<PInt<Ur>> for PInt<Ul>
where Ul: Unsigned + NonZero + Cmp<Ur> + PrivateIntegerAdd<<Ul as Cmp<Ur>>::Output, Ur>, Ur: Unsigned + NonZero,

P(Ul) - P(Ur): We resolve this with our PrivateAdd

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type Output = <Ul as PrivateIntegerAdd<<Ul as Cmp<Ur>>::Output, Ur>>::Output

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impl<Vl, Al, Vr, Ar> Sub<TArr<Vr, Ar>> for TArr<Vl, Al>
where Vl: Sub<Vr>, Al: Sub<Ar>,

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type Output = TArr<<Vl as Sub<Vr>>::Output, <Al as Sub<Ar>>::Output>

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impl<const N: usize> Sub for Simd<f32, N>

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impl<const N: usize> Sub for Simd<f64, N>

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impl<const N: usize> Sub for Simd<i8, N>

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impl<const N: usize> Sub for Simd<i16, N>

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impl<const N: usize> Sub for Simd<i32, N>

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impl<const N: usize> Sub for Simd<i64, N>

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impl<const N: usize> Sub for Simd<isize, N>

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impl<const N: usize> Sub for Simd<u8, N>

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impl<const N: usize> Sub for Simd<u16, N>

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impl<const N: usize> Sub for Simd<u32, N>

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impl<const N: usize> Sub for Simd<u64, N>

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impl<const N: usize> Sub for Simd<usize, N>