Trait SubAssign 

pub trait SubAssign<Rhs = Self> {
    // Required method
    fn sub_assign(&mut self, rhs: Rhs);
}

The subtraction assignment operator -=.

Examples

This example creates a Point struct that implements the SubAssign trait, and then demonstrates sub-assigning to a mutable Point.

use std::ops::SubAssign;

#[derive(Debug, Copy, Clone, PartialEq)]
struct Point {
    x: i32,
    y: i32,
}

impl SubAssign for Point {
    fn sub_assign(&mut self, other: Self) {
        *self = Self {
            x: self.x - other.x,
            y: self.y - other.y,
        };
    }
}

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

Required Methods

fn sub_assign(&mut self, rhs: Rhs)

Performs the -= operation.

Example

let mut x: u32 = 12;
x -= 1;
assert_eq!(x, 11);

Implementors

impl SubAssign for f16

impl SubAssign for f32

impl SubAssign for f64

impl SubAssign for f128

impl SubAssign for i8

impl SubAssign for i16

impl SubAssign for i32

impl SubAssign for i64

impl SubAssign for i128

impl SubAssign for isize

impl SubAssign for u8

impl SubAssign for u16

impl SubAssign for u32

impl SubAssign for u64

impl SubAssign for u128

impl SubAssign for usize

impl SubAssign for ShutdownState

impl SubAssign for SslMode

impl SubAssign for SslOptions

impl SubAssign for SslSessionCacheMode

impl SubAssign for SslVerifyMode

impl SubAssign for X509CheckFlags

impl SubAssign for X509VerifyFlags

impl SubAssign for BigInt

impl SubAssign for BigUint

impl SubAssign for Saturating<i8>

impl SubAssign for Saturating<i16>

impl SubAssign for Saturating<i32>

impl SubAssign for Saturating<i64>

impl SubAssign for Saturating<i128>

impl SubAssign for Saturating<isize>

impl SubAssign for Saturating<u8>

impl SubAssign for Saturating<u16>

impl SubAssign for Saturating<u32>

impl SubAssign for Saturating<u64>

impl SubAssign for Saturating<u128>

impl SubAssign for Saturating<usize>

impl SubAssign for Wrapping<i8>

impl SubAssign for Wrapping<i16>

impl SubAssign for Wrapping<i32>

impl SubAssign for Wrapping<i64>

impl SubAssign for Wrapping<i128>

impl SubAssign for Wrapping<isize>

impl SubAssign for Wrapping<u8>

impl SubAssign for Wrapping<u16>

impl SubAssign for Wrapping<u32>

impl SubAssign for Wrapping<u64>

impl SubAssign for Wrapping<u128>

impl SubAssign for Wrapping<usize>

impl SubAssign for core::time::Duration

impl SubAssign for Access

impl SubAssign for AtFlags

impl SubAssign for CreateFlags

impl SubAssign for DupFlags

impl SubAssign for Duration

impl SubAssign for FallocateFlags

impl SubAssign for FdFlags

impl SubAssign for IFlags

impl SubAssign for MemfdFlags

impl SubAssign for Mode

impl SubAssign for OFlags

impl SubAssign for ReadFlags

impl SubAssign for ReadWriteFlags

impl SubAssign for RenameFlags

impl SubAssign for ResolveFlags

impl SubAssign for SealFlags

impl SubAssign for SignedDuration

impl SubAssign for StatVfsMountFlags

impl SubAssign for StatxAttributes

impl SubAssign for StatxFlags

impl SubAssign for Timespec

impl SubAssign for WatchFlags

impl SubAssign for XattrFlags

impl SubAssign<&f16> for f16

impl SubAssign<&f32> for f32

impl SubAssign<&f64> for f64

impl SubAssign<&f128> for f128

impl SubAssign<&i8> for i8

impl SubAssign<&i8> for Saturating<i8>

impl SubAssign<&i8> for Wrapping<i8>

impl SubAssign<&i16> for i16

impl SubAssign<&i16> for Saturating<i16>

impl SubAssign<&i16> for Wrapping<i16>

impl SubAssign<&i32> for i32

impl SubAssign<&i32> for Saturating<i32>

impl SubAssign<&i32> for Wrapping<i32>

impl SubAssign<&i64> for i64

impl SubAssign<&i64> for Saturating<i64>

impl SubAssign<&i64> for Wrapping<i64>

impl SubAssign<&i128> for i128

impl SubAssign<&i128> for Saturating<i128>

impl SubAssign<&i128> for Wrapping<i128>

impl SubAssign<&isize> for isize

impl SubAssign<&isize> for Saturating<isize>

impl SubAssign<&isize> for Wrapping<isize>

impl SubAssign<&u8> for u8

impl SubAssign<&u8> for Saturating<u8>

impl SubAssign<&u8> for Wrapping<u8>

impl SubAssign<&u16> for u16

impl SubAssign<&u16> for Saturating<u16>

impl SubAssign<&u16> for Wrapping<u16>

impl SubAssign<&u32> for u32

impl SubAssign<&u32> for Saturating<u32>

impl SubAssign<&u32> for Wrapping<u32>

impl SubAssign<&u64> for u64

impl SubAssign<&u64> for Saturating<u64>

impl SubAssign<&u64> for Wrapping<u64>

impl SubAssign<&u128> for u128

impl SubAssign<&u128> for Saturating<u128>

impl SubAssign<&u128> for Wrapping<u128>

impl SubAssign<&usize> for usize

impl SubAssign<&usize> for Saturating<usize>

impl SubAssign<&usize> for Wrapping<usize>

impl SubAssign<&BigInt> for BigInt

impl SubAssign<&BigUint> for BigUint

impl SubAssign<&Saturating<i8>> for Saturating<i8>

impl SubAssign<&Saturating<i16>> for Saturating<i16>

impl SubAssign<&Saturating<i32>> for Saturating<i32>

impl SubAssign<&Saturating<i64>> for Saturating<i64>

impl SubAssign<&Saturating<i128>> for Saturating<i128>

impl SubAssign<&Saturating<isize>> for Saturating<isize>

impl SubAssign<&Saturating<u8>> for Saturating<u8>

impl SubAssign<&Saturating<u16>> for Saturating<u16>

impl SubAssign<&Saturating<u32>> for Saturating<u32>

impl SubAssign<&Saturating<u64>> for Saturating<u64>

impl SubAssign<&Saturating<u128>> for Saturating<u128>

impl SubAssign<&Saturating<usize>> for Saturating<usize>

impl SubAssign<&Wrapping<i8>> for Wrapping<i8>

impl SubAssign<&Wrapping<i16>> for Wrapping<i16>

impl SubAssign<&Wrapping<i32>> for Wrapping<i32>

impl SubAssign<&Wrapping<i64>> for Wrapping<i64>

impl SubAssign<&Wrapping<i128>> for Wrapping<i128>

impl SubAssign<&Wrapping<isize>> for Wrapping<isize>

impl SubAssign<&Wrapping<u8>> for Wrapping<u8>

impl SubAssign<&Wrapping<u16>> for Wrapping<u16>

impl SubAssign<&Wrapping<u32>> for Wrapping<u32>

impl SubAssign<&Wrapping<u64>> for Wrapping<u64>

impl SubAssign<&Wrapping<u128>> for Wrapping<u128>

impl SubAssign<&Wrapping<usize>> for Wrapping<usize>

impl SubAssign<i8> for BigInt

impl SubAssign<i8> for Saturating<i8>

impl SubAssign<i8> for Wrapping<i8>

impl SubAssign<i8> for Weekday

impl SubAssign<i16> for BigInt

impl SubAssign<i16> for Saturating<i16>

impl SubAssign<i16> for Wrapping<i16>

impl SubAssign<i16> for Weekday

impl SubAssign<i32> for BigInt

impl SubAssign<i32> for Saturating<i32>

impl SubAssign<i32> for Wrapping<i32>

impl SubAssign<i32> for Weekday

impl SubAssign<i64> for BigInt

impl SubAssign<i64> for Saturating<i64>

impl SubAssign<i64> for Wrapping<i64>

impl SubAssign<i64> for Weekday

impl SubAssign<i128> for BigInt

impl SubAssign<i128> for Saturating<i128>

impl SubAssign<i128> for Wrapping<i128>

impl SubAssign<isize> for BigInt

impl SubAssign<isize> for Saturating<isize>

impl SubAssign<isize> for Wrapping<isize>

impl SubAssign<u8> for BigInt

impl SubAssign<u8> for BigUint

impl SubAssign<u8> for Saturating<u8>

impl SubAssign<u8> for Wrapping<u8>

impl SubAssign<u16> for BigInt

impl SubAssign<u16> for BigUint

impl SubAssign<u16> for Saturating<u16>

impl SubAssign<u16> for Wrapping<u16>

impl SubAssign<u32> for BigInt

impl SubAssign<u32> for BigUint

impl SubAssign<u32> for Saturating<u32>

impl SubAssign<u32> for Wrapping<u32>

impl SubAssign<u64> for BigInt

impl SubAssign<u64> for BigUint

impl SubAssign<u64> for Saturating<u64>

impl SubAssign<u64> for Wrapping<u64>

impl SubAssign<u128> for BigInt

impl SubAssign<u128> for BigUint

impl SubAssign<u128> for Saturating<u128>

impl SubAssign<u128> for Wrapping<u128>

impl SubAssign<usize> for BigInt

impl SubAssign<usize> for BigUint

impl SubAssign<usize> for Saturating<usize>

impl SubAssign<usize> for Wrapping<usize>

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

impl SubAssign<Duration> for SystemTime

impl SubAssign<Duration> for Date

impl SubAssign<Duration> for Date

Subtracts an unsigned duration of time from a date in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Date::checked_sub].

impl SubAssign<Duration> for DateTime

Subtracts an unsigned duration of time from a datetime in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [DateTime::checked_sub].

impl SubAssign<Duration> for Duration

impl SubAssign<Duration> for Instant

impl SubAssign<Duration> for Offset

Subtracts an unsigned duration of time from an offset in place. This panics on overflow.

For checked arithmetic, see [Offset::checked_sub].

impl SubAssign<Duration> for OffsetDateTime

impl SubAssign<Duration> for PrimitiveDateTime

impl SubAssign<Duration> for Time

impl SubAssign<Duration> for Time

Subtracts an unsigned duration of time in place. This uses wrapping arithmetic.

For checked arithmetic, see [Time::checked_sub].

impl SubAssign<Duration> for Timestamp

Subtracts an unsigned duration of time from a timestamp in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Timestamp::checked_sub].

impl SubAssign<Duration> for UtcDateTime

impl SubAssign<Duration> for Zoned

Subtracts an unsigned duration of time from a zoned datetime in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Zoned::checked_sub].

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

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

impl SubAssign<Duration> for SystemTime

Available on crate feature std only.

impl SubAssign<Duration> for Date

impl SubAssign<Duration> for OffsetDateTime

impl SubAssign<Duration> for PrimitiveDateTime

impl SubAssign<Duration> for Time

impl SubAssign<Duration> for UtcDateTime

impl SubAssign<SignedDuration> for Date

Subtracts a signed duration of time from a date in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Date::checked_sub].

impl SubAssign<SignedDuration> for DateTime

Subtracts a signed duration of time from a datetime in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [DateTime::checked_sub].

impl SubAssign<SignedDuration> for Offset

Subtracts a signed duration of time from an offset in place. This panics on overflow.

For checked arithmetic, see [Offset::checked_sub].

impl SubAssign<SignedDuration> for Time

Subtracts a signed duration of time in place. This uses wrapping arithmetic.

For checked arithmetic, see [Time::checked_sub].

impl SubAssign<SignedDuration> for Timestamp

Subtracts a signed duration of time from a timestamp in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Timestamp::checked_sub].

impl SubAssign<SignedDuration> for Zoned

Subtracts a signed duration of time from a zoned datetime in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Zoned::checked_sub].

impl SubAssign<Span> for Date

Subtracts a span of time from a date in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Date::checked_sub].

impl SubAssign<Span> for DateTime

Subtracts a span of time from a datetime in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [DateTime::checked_sub].

impl SubAssign<Span> for Offset

Subtracts a span of time from an offset in place. This panics on overflow.

For checked arithmetic, see [Offset::checked_sub].

impl SubAssign<Span> for Time

Subtracts a span of time in place. This uses wrapping arithmetic.

For checked arithmetic, see [Time::checked_sub].

impl SubAssign<Span> for Timestamp

Subtracts a span of time from a timestamp in place.

This uses checked arithmetic and panics when it fails. To handle arithmetic without panics, use [Timestamp::checked_sub]. Note that the failure condition includes overflow and using a Span with non-zero units greater than hours.

impl SubAssign<Span> for Zoned

Subtracts a span of time from a zoned datetime in place.

This uses checked arithmetic and panics on overflow. To handle overflow without panics, use [Zoned::checked_sub].

impl<O> SubAssign for F32<O>

where O: ByteOrder,

impl<O> SubAssign for F64<O>

where O: ByteOrder,

impl<O> SubAssign for I16<O>

where O: ByteOrder,

impl<O> SubAssign for I32<O>

where O: ByteOrder,

impl<O> SubAssign for I64<O>

where O: ByteOrder,

impl<O> SubAssign for I128<O>

where O: ByteOrder,

impl<O> SubAssign for Isize<O>

where O: ByteOrder,

impl<O> SubAssign for U16<O>

where O: ByteOrder,

impl<O> SubAssign for U32<O>

where O: ByteOrder,

impl<O> SubAssign for U64<O>

where O: ByteOrder,

impl<O> SubAssign for U128<O>

where O: ByteOrder,

impl<O> SubAssign for Usize<O>

where O: ByteOrder,

impl<O> SubAssign<f32> for F32<O>

where O: ByteOrder,

impl<O> SubAssign<f64> for F64<O>

where O: ByteOrder,

impl<O> SubAssign<i16> for I16<O>

where O: ByteOrder,

impl<O> SubAssign<i32> for I32<O>

where O: ByteOrder,

impl<O> SubAssign<i64> for I64<O>

where O: ByteOrder,

impl<O> SubAssign<i128> for I128<O>

where O: ByteOrder,

impl<O> SubAssign<isize> for Isize<O>

where O: ByteOrder,

impl<O> SubAssign<u16> for U16<O>

where O: ByteOrder,

impl<O> SubAssign<u32> for U32<O>

where O: ByteOrder,

impl<O> SubAssign<u64> for U64<O>

where O: ByteOrder,

impl<O> SubAssign<u128> for U128<O>

where O: ByteOrder,

impl<O> SubAssign<usize> for Usize<O>

where O: ByteOrder,

impl<O> SubAssign<F32<O>> for f32

where O: ByteOrder,

impl<O> SubAssign<F64<O>> for f64

where O: ByteOrder,

impl<O> SubAssign<I16<O>> for i16

where O: ByteOrder,

impl<O> SubAssign<I32<O>> for i32

where O: ByteOrder,

impl<O> SubAssign<I64<O>> for i64

where O: ByteOrder,

impl<O> SubAssign<I128<O>> for i128

where O: ByteOrder,

impl<O> SubAssign<Isize<O>> for isize

where O: ByteOrder,

impl<O> SubAssign<U16<O>> for u16

where O: ByteOrder,

impl<O> SubAssign<U32<O>> for u32

where O: ByteOrder,

impl<O> SubAssign<U64<O>> for u64

where O: ByteOrder,

impl<O> SubAssign<U128<O>> for u128

where O: ByteOrder,

impl<O> SubAssign<Usize<O>> for usize

where O: ByteOrder,

impl<T, S, A> SubAssign<&HashSet<T, S, A>> for HashSet<T, S, A>

where T: Eq + Hash + Clone, S: BuildHasher, A: Allocator,

impl<T, S, A> SubAssign<&HashSet<T, S, A>> for HashSet<T, S, A>

where T: Eq + Hash + Clone, S: BuildHasher, A: Allocator,

impl<T, U, const N: usize> SubAssign<U> for Simd<T, N>

where Simd<T, N>: Sub<U, Output = Simd<T, N>>, T: SimdElement,