pub trait SubAssign<Rhs = Self> {
// Required method
fn sub_assign(&mut self, rhs: Rhs);
}
Expand description
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§
1.8.0 · Sourcefn sub_assign(&mut self, rhs: Rhs)
fn sub_assign(&mut self, rhs: Rhs)
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 AtFlags
impl SubAssign for FallocateFlags
impl SubAssign for nix::fcntl::FdFlag
impl SubAssign for OFlag
impl SubAssign for SealFlag
impl SubAssign for SpliceFFlags
impl SubAssign for DeleteModuleFlags
impl SubAssign for ModuleInitFlags
impl SubAssign for MntFlags
impl SubAssign for nix::mount::MsFlags
impl SubAssign for nix::mqueue::FdFlag
impl SubAssign for MQ_OFlag
impl SubAssign for InterfaceFlags
impl SubAssign for PollFlags
impl SubAssign for CloneFlags
impl SubAssign for EpollCreateFlags
impl SubAssign for EpollFlags
impl SubAssign for EfdFlags
impl SubAssign for AddWatchFlags
impl SubAssign for InitFlags
impl SubAssign for MemFdCreateFlag
impl SubAssign for MapFlags
impl SubAssign for MlockAllFlags
impl SubAssign for nix::sys::mman::MsFlags
impl SubAssign for ProtFlags
impl SubAssign for Options
impl SubAssign for QuotaValidFlags
impl SubAssign for SaFlags
impl SubAssign for SfdFlags
impl SubAssign for MsgFlags
impl SubAssign for SockFlag
impl SubAssign for nix::sys::stat::Mode
impl SubAssign for SFlag
impl SubAssign for FsFlags
impl SubAssign for ControlFlags
impl SubAssign for InputFlags
impl SubAssign for LocalFlags
impl SubAssign for OutputFlags
impl SubAssign for WaitPidFlag
impl SubAssign for AccessFlags
impl SubAssign for Transformations
impl SubAssign for Extensions
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 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>
impl<'a, T> SubAssign<&'a T> for Ratio<T>
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 f32where
O: ByteOrder,
impl<O> SubAssign<F64<O>> for f64where
O: ByteOrder,
impl<O> SubAssign<I16<O>> for i16where
O: ByteOrder,
impl<O> SubAssign<I32<O>> for i32where
O: ByteOrder,
impl<O> SubAssign<I64<O>> for i64where
O: ByteOrder,
impl<O> SubAssign<I128<O>> for i128where
O: ByteOrder,
impl<O> SubAssign<Isize<O>> for isizewhere
O: ByteOrder,
impl<O> SubAssign<U16<O>> for u16where
O: ByteOrder,
impl<O> SubAssign<U32<O>> for u32where
O: ByteOrder,
impl<O> SubAssign<U64<O>> for u64where
O: ByteOrder,
impl<O> SubAssign<U128<O>> for u128where
O: ByteOrder,
impl<O> SubAssign<Usize<O>> for usizewhere
O: ByteOrder,
impl<T> SubAssign for Ratio<T>
impl<T> SubAssign for NotNan<T>
impl<T> SubAssign for Mat4<T>
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
impl<T> SubAssign<T> for Ratio<T>
impl<T> SubAssign<T> for NotNan<T>
Subtracts a float directly.
Panics if the provided value is NaN or the computation results in NaN
impl<T, U, const N: usize> SubAssign<U> for Simd<T, N>
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.