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 WithdrawReasons

impl SubAssign for Weight

impl SubAssign for U256

impl SubAssign for U512

impl SubAssign for Capabilities

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 topsoil_core::runtime::std::num::Wrapping<i8>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<i16>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<i32>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<i64>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<i128>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<isize>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<u8>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<u16>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<u32>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<u64>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<u128>

impl SubAssign for topsoil_core::runtime::std::num::Wrapping<usize>

impl SubAssign for topsoil_core::runtime::std::time::Duration

impl SubAssign for Checked<Limb>

impl SubAssign for crypto_bigint::wrapping::Wrapping<Limb>

impl SubAssign for EdwardsPoint

impl SubAssign for RistrettoPoint

impl SubAssign for curve25519_dalek::scalar::Scalar

impl SubAssign for ProjectivePoint

impl SubAssign for k256::arithmetic::scalar::Scalar

impl SubAssign for primitive_types::U128

impl SubAssign for Slot

impl SubAssign for time::duration::Duration

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 topsoil_core::runtime::std::num::Wrapping<i8>

impl SubAssign<&i16> for i16

impl SubAssign<&i16> for Saturating<i16>

impl SubAssign<&i16> for topsoil_core::runtime::std::num::Wrapping<i16>

impl SubAssign<&i32> for i32

impl SubAssign<&i32> for Saturating<i32>

impl SubAssign<&i32> for topsoil_core::runtime::std::num::Wrapping<i32>

impl SubAssign<&i64> for i64

impl SubAssign<&i64> for Saturating<i64>

impl SubAssign<&i64> for topsoil_core::runtime::std::num::Wrapping<i64>

impl SubAssign<&i128> for i128

impl SubAssign<&i128> for Saturating<i128>

impl SubAssign<&i128> for topsoil_core::runtime::std::num::Wrapping<i128>

impl SubAssign<&isize> for isize

impl SubAssign<&isize> for Saturating<isize>

impl SubAssign<&isize> for topsoil_core::runtime::std::num::Wrapping<isize>

impl SubAssign<&u8> for u8

impl SubAssign<&u8> for Saturating<u8>

impl SubAssign<&u8> for topsoil_core::runtime::std::num::Wrapping<u8>

impl SubAssign<&u16> for u16

impl SubAssign<&u16> for Saturating<u16>

impl SubAssign<&u16> for topsoil_core::runtime::std::num::Wrapping<u16>

impl SubAssign<&u32> for u32

impl SubAssign<&u32> for Saturating<u32>

impl SubAssign<&u32> for topsoil_core::runtime::std::num::Wrapping<u32>

impl SubAssign<&u64> for u64

impl SubAssign<&u64> for Saturating<u64>

impl SubAssign<&u64> for topsoil_core::runtime::std::num::Wrapping<u64>

impl SubAssign<&u128> for u128

impl SubAssign<&u128> for Saturating<u128>

impl SubAssign<&u128> for topsoil_core::runtime::std::num::Wrapping<u128>

impl SubAssign<&usize> for usize

impl SubAssign<&usize> for Saturating<usize>

impl SubAssign<&usize> for topsoil_core::runtime::std::num::Wrapping<usize>

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 topsoil_core::runtime::std::num::Wrapping<i8>

impl SubAssign<&Wrapping<i16>> for topsoil_core::runtime::std::num::Wrapping<i16>

impl SubAssign<&Wrapping<i32>> for topsoil_core::runtime::std::num::Wrapping<i32>

impl SubAssign<&Wrapping<i64>> for topsoil_core::runtime::std::num::Wrapping<i64>

impl SubAssign<&Wrapping<i128>> for topsoil_core::runtime::std::num::Wrapping<i128>

impl SubAssign<&Wrapping<isize>> for topsoil_core::runtime::std::num::Wrapping<isize>

impl SubAssign<&Wrapping<u8>> for topsoil_core::runtime::std::num::Wrapping<u8>

impl SubAssign<&Wrapping<u16>> for topsoil_core::runtime::std::num::Wrapping<u16>

impl SubAssign<&Wrapping<u32>> for topsoil_core::runtime::std::num::Wrapping<u32>

impl SubAssign<&Wrapping<u64>> for topsoil_core::runtime::std::num::Wrapping<u64>

impl SubAssign<&Wrapping<u128>> for topsoil_core::runtime::std::num::Wrapping<u128>

impl SubAssign<&Wrapping<usize>> for topsoil_core::runtime::std::num::Wrapping<usize>

impl SubAssign<&Checked<Limb>> for Checked<Limb>

impl SubAssign<&Wrapping<Limb>> for crypto_bigint::wrapping::Wrapping<Limb>

impl SubAssign<&AffinePoint> for ProjectivePoint

impl SubAssign<&ProjectivePoint> for ProjectivePoint

impl SubAssign<&Scalar> for k256::arithmetic::scalar::Scalar

impl SubAssign<i8> for Saturating<i8>

impl SubAssign<i8> for topsoil_core::runtime::std::num::Wrapping<i8>

impl SubAssign<i16> for Saturating<i16>

impl SubAssign<i16> for topsoil_core::runtime::std::num::Wrapping<i16>

impl SubAssign<i32> for Saturating<i32>

impl SubAssign<i32> for topsoil_core::runtime::std::num::Wrapping<i32>

impl SubAssign<i64> for Saturating<i64>

impl SubAssign<i64> for topsoil_core::runtime::std::num::Wrapping<i64>

impl SubAssign<i128> for Saturating<i128>

impl SubAssign<i128> for topsoil_core::runtime::std::num::Wrapping<i128>

impl SubAssign<isize> for Saturating<isize>

impl SubAssign<isize> for topsoil_core::runtime::std::num::Wrapping<isize>

impl SubAssign<u8> for Saturating<u8>

impl SubAssign<u8> for topsoil_core::runtime::std::num::Wrapping<u8>

impl SubAssign<u16> for Saturating<u16>

impl SubAssign<u16> for topsoil_core::runtime::std::num::Wrapping<u16>

impl SubAssign<u32> for Saturating<u32>

impl SubAssign<u32> for topsoil_core::runtime::std::num::Wrapping<u32>

impl SubAssign<u64> for Saturating<u64>

impl SubAssign<u64> for topsoil_core::runtime::std::num::Wrapping<u64>

impl SubAssign<u128> for Saturating<u128>

impl SubAssign<u128> for topsoil_core::runtime::std::num::Wrapping<u128>

impl SubAssign<usize> for Saturating<usize>

impl SubAssign<usize> for topsoil_core::runtime::std::num::Wrapping<usize>

impl SubAssign<Duration> for Instant

impl SubAssign<Duration> for SystemTime

impl SubAssign<Duration> for Date

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

impl SubAssign<Duration> for OffsetDateTime

impl SubAssign<Duration> for PrimitiveDateTime

impl SubAssign<Duration> for Time

impl SubAssign<Duration> for UtcDateTime

impl SubAssign<AffinePoint> for ProjectivePoint

impl SubAssign<Duration> for Instant

impl SubAssign<Duration> for SystemTime

Available on crate feature std only.

impl SubAssign<Duration> for topsoil_core::runtime::std::time::Duration

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<'b> SubAssign<&'b EdwardsPoint> for EdwardsPoint

impl<'b> SubAssign<&'b RistrettoPoint> for RistrettoPoint

impl<'b> SubAssign<&'b Scalar> for curve25519_dalek::scalar::Scalar

impl<C> SubAssign for ScalarPrimitive<C>

where C: Curve,

impl<C> SubAssign<&ScalarPrimitive<C>> for ScalarPrimitive<C>

where C: Curve,

impl<MOD, const LIMBS: usize> SubAssign for Residue<MOD, LIMBS>

where MOD: ResidueParams<LIMBS>,

impl<MOD, const LIMBS: usize> SubAssign<&Residue<MOD, LIMBS>> for Residue<MOD, LIMBS>

where MOD: ResidueParams<LIMBS>,

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 zerocopy::byteorder::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 zerocopy::byteorder::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, D> SubAssign for TypeWithDefault<T, D>

where T: SubAssign, D: Get<T>,

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,

impl<const LIMBS: usize> SubAssign for Checked<Uint<LIMBS>>

impl<const LIMBS: usize> SubAssign for DynResidue<LIMBS>

impl<const LIMBS: usize> SubAssign for crypto_bigint::wrapping::Wrapping<Uint<LIMBS>>

impl<const LIMBS: usize> SubAssign<&Checked<Uint<LIMBS>>> for Checked<Uint<LIMBS>>

impl<const LIMBS: usize> SubAssign<&DynResidue<LIMBS>> for DynResidue<LIMBS>

impl<const LIMBS: usize> SubAssign<&Wrapping<Uint<LIMBS>>> for crypto_bigint::wrapping::Wrapping<Uint<LIMBS>>