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 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 Duration

impl SubAssign for Point

impl SubAssign for Sides

impl SubAssign for TimeDelta

impl SubAssign for nix::fcntl::AtFlags

impl SubAssign for nix::fcntl::AtFlags

impl SubAssign for nix::fcntl::FallocateFlags

impl SubAssign for nix::fcntl::FallocateFlags

impl SubAssign for nix::fcntl::FdFlag

impl SubAssign for nix::fcntl::FdFlag

impl SubAssign for nix::fcntl::OFlag

impl SubAssign for nix::fcntl::OFlag

impl SubAssign for nix::fcntl::SealFlag

impl SubAssign for nix::fcntl::SealFlag

impl SubAssign for nix::fcntl::SpliceFFlags

impl SubAssign for nix::fcntl::SpliceFFlags

impl SubAssign for nix::kmod::DeleteModuleFlags

impl SubAssign for nix::kmod::DeleteModuleFlags

impl SubAssign for nix::kmod::ModuleInitFlags

impl SubAssign for nix::kmod::ModuleInitFlags

impl SubAssign for nix::mount::MntFlags

impl SubAssign for nix::mount::MntFlags

impl SubAssign for nix::mount::MsFlags

impl SubAssign for nix::mount::MsFlags

impl SubAssign for nix::mqueue::FdFlag

impl SubAssign for nix::mqueue::FdFlag

impl SubAssign for nix::mqueue::MQ_OFlag

impl SubAssign for nix::mqueue::MQ_OFlag

impl SubAssign for nix::net::if_::InterfaceFlags

impl SubAssign for nix::net::if_::InterfaceFlags

impl SubAssign for nix::poll::PollFlags

impl SubAssign for nix::poll::PollFlags

impl SubAssign for nix::sched::sched_linux_like::CloneFlags

impl SubAssign for nix::sched::sched_linux_like::CloneFlags

impl SubAssign for nix::sys::epoll::EpollCreateFlags

impl SubAssign for nix::sys::epoll::EpollCreateFlags

impl SubAssign for nix::sys::epoll::EpollFlags

impl SubAssign for nix::sys::epoll::EpollFlags

impl SubAssign for nix::sys::eventfd::EfdFlags

impl SubAssign for nix::sys::eventfd::EfdFlags

impl SubAssign for nix::sys::inotify::AddWatchFlags

impl SubAssign for nix::sys::inotify::AddWatchFlags

impl SubAssign for nix::sys::inotify::InitFlags

impl SubAssign for nix::sys::inotify::InitFlags

impl SubAssign for nix::sys::memfd::MemFdCreateFlag

impl SubAssign for nix::sys::memfd::MemFdCreateFlag

impl SubAssign for MRemapFlags

impl SubAssign for nix::sys::mman::MapFlags

impl SubAssign for nix::sys::mman::MapFlags

impl SubAssign for nix::sys::mman::MlockAllFlags

impl SubAssign for nix::sys::mman::MlockAllFlags

impl SubAssign for nix::sys::mman::MsFlags

impl SubAssign for nix::sys::mman::MsFlags

impl SubAssign for nix::sys::mman::ProtFlags

impl SubAssign for nix::sys::mman::ProtFlags

impl SubAssign for Persona

impl SubAssign for nix::sys::ptrace::linux::Options

impl SubAssign for nix::sys::ptrace::linux::Options

impl SubAssign for nix::sys::quota::QuotaValidFlags

impl SubAssign for nix::sys::quota::QuotaValidFlags

impl SubAssign for nix::sys::signal::SaFlags

impl SubAssign for nix::sys::signal::SaFlags

impl SubAssign for nix::sys::signalfd::SfdFlags

impl SubAssign for nix::sys::signalfd::SfdFlags

impl SubAssign for nix::sys::socket::MsgFlags

impl SubAssign for nix::sys::socket::MsgFlags

impl SubAssign for nix::sys::socket::SockFlag

impl SubAssign for nix::sys::socket::SockFlag

impl SubAssign for nix::sys::stat::Mode

impl SubAssign for nix::sys::stat::Mode

impl SubAssign for nix::sys::stat::SFlag

impl SubAssign for nix::sys::stat::SFlag

impl SubAssign for nix::sys::statvfs::FsFlags

impl SubAssign for nix::sys::statvfs::FsFlags

impl SubAssign for nix::sys::termios::ControlFlags

impl SubAssign for nix::sys::termios::ControlFlags

impl SubAssign for nix::sys::termios::InputFlags

impl SubAssign for nix::sys::termios::InputFlags

impl SubAssign for nix::sys::termios::LocalFlags

impl SubAssign for nix::sys::termios::LocalFlags

impl SubAssign for nix::sys::termios::OutputFlags

impl SubAssign for nix::sys::termios::OutputFlags

impl SubAssign for nix::sys::timerfd::TimerFlags

impl SubAssign for nix::sys::timerfd::TimerFlags

impl SubAssign for nix::sys::timerfd::TimerSetTimeFlags

impl SubAssign for nix::sys::timerfd::TimerSetTimeFlags

impl SubAssign for nix::sys::wait::WaitPidFlag

impl SubAssign for nix::sys::wait::WaitPidFlag

impl SubAssign for nix::unistd::AccessFlags

impl SubAssign for nix::unistd::AccessFlags

impl SubAssign for Transformations

impl SubAssign for DndAction

impl SubAssign for wayland_client::protocol::wl_output::Mode

impl SubAssign for Capability

impl SubAssign for Resize

impl SubAssign for Transient

impl SubAssign for Kind

impl SubAssign for wayland_protocols::stable::xdg_shell::generated::client::xdg_positioner::ConstraintAdjustment

impl SubAssign for ContentHint

impl SubAssign for wayland_protocols::unstable::xdg_shell::v6::generated::client::zxdg_positioner_v6::Anchor

impl SubAssign for wayland_protocols::unstable::xdg_shell::v6::generated::client::zxdg_positioner_v6::ConstraintAdjustment

impl SubAssign for Gravity

impl SubAssign for wayland_protocols::wlr::unstable::layer_shell::v1::generated::client::zwlr_layer_surface_v1::Anchor

impl SubAssign for Flags

impl SubAssign for ModifiersState

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<&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 Saturating<i8>

impl SubAssign<i8> for Wrapping<i8>

impl SubAssign<i16> for Saturating<i16>

impl SubAssign<i16> for Wrapping<i16>

impl SubAssign<i32> for Saturating<i32>

impl SubAssign<i32> for Wrapping<i32>

impl SubAssign<i64> for Saturating<i64>

impl SubAssign<i64> for Wrapping<i64>

impl SubAssign<i128> for Saturating<i128>

impl SubAssign<i128> for Wrapping<i128>

impl SubAssign<isize> for Saturating<isize>

impl SubAssign<isize> for Wrapping<isize>

impl SubAssign<u8> for Saturating<u8>

impl SubAssign<u8> for Wrapping<u8>

impl SubAssign<u16> for Saturating<u16>

impl SubAssign<u16> for Wrapping<u16>

impl SubAssign<u32> for Saturating<u32>

impl SubAssign<u32> for Wrapping<u32>

impl SubAssign<u64> for Saturating<u64>

impl SubAssign<u64> for Wrapping<u64>

impl SubAssign<u128> for Saturating<u128>

impl SubAssign<u128> for Wrapping<u128>

impl SubAssign<usize> for Saturating<usize>

impl SubAssign<usize> for Wrapping<usize>

impl SubAssign<Duration> for Instant

impl SubAssign<Duration> for SystemTime

impl SubAssign<Duration> for NaiveDateTime

Subtract-assign std::time::Duration from NaiveDateTime.

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

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

impl SubAssign<Duration> for NaiveTime

Subtract-assign std::time::Duration from NaiveTime.

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

impl SubAssign<TimeDelta> for NaiveDate

Subtract-assign 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.

impl SubAssign<TimeDelta> for NaiveDateTime

Subtract-assign TimeDelta from NaiveDateTime.

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

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

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

impl SubAssign<TimeDelta> for NaiveTime

Subtract-assign TimeDelta from NaiveTime.

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

impl<'a, T> SubAssign<&'a Ratio<T>> for Ratio<T>

where T: Clone + Integer + NumAssign,

impl<'a, T> SubAssign<&'a T> for Ratio<T>

where T: Clone + Integer + NumAssign,

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> SubAssign for Ratio<T>

where T: Clone + Integer + NumAssign,

impl<T> SubAssign for Mat4<T>

where T: Num + Copy + SubAssign,

impl<T> SubAssign for RealImpl<T>

where T: Float,

impl<T> SubAssign for Vec2<T>

where T: SubAssign,

impl<T> SubAssign for Vec3<T>

where T: SubAssign,

impl<T> SubAssign for Vec4<T>

where T: SubAssign,

impl<T> SubAssign<T> for Ready

where T: Into<Ready>,

impl<T> SubAssign<T> for Ratio<T>

where T: Clone + Integer + NumAssign,

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

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

impl<Tz> SubAssign<Duration> for DateTime<Tz>

where Tz: TimeZone,

Subtract-assign std::time::Duration from DateTime.

As a part of Chrono’s [leap second handling], the addition 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.

impl<Tz> SubAssign<TimeDelta> for Date<Tz>

where Tz: TimeZone,

impl<Tz> SubAssign<TimeDelta> for DateTime<Tz>

where Tz: TimeZone,

Subtract-assign TimeDelta from DateTime.

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

As a part of Chrono’s [leap second handling], the addition 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.