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 FileType

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::RenameFlags

impl SubAssign for nix::fcntl::RenameFlags

impl SubAssign for nix::fcntl::ResolveFlag

impl SubAssign for nix::fcntl::ResolveFlag

impl SubAssign for nix::fcntl::SealFlag

impl SubAssign for nix::fcntl::SealFlag

impl SubAssign for PollFlags

impl SubAssign for PosixSpawnFlags

impl SubAssign for MFdFlags

impl SubAssign for MemFdCreateFlag

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::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 ControlFlags

impl SubAssign for InputFlags

impl SubAssign for LocalFlags

impl SubAssign for OutputFlags

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 CipherCtxFlags

impl SubAssign for CMSOptions

impl SubAssign for OcspFlag

impl SubAssign for Pkcs7Flags

impl SubAssign for ExtensionContext

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 rustix::backend::fs::inotify::CreateFlags

impl SubAssign for rustix::backend::fs::inotify::CreateFlags

impl SubAssign for rustix::backend::fs::inotify::ReadFlags

impl SubAssign for rustix::backend::fs::inotify::ReadFlags

impl SubAssign for rustix::backend::fs::inotify::WatchFlags

impl SubAssign for rustix::backend::fs::inotify::WatchFlags

impl SubAssign for rustix::backend::fs::types::Access

impl SubAssign for rustix::backend::fs::types::Access

impl SubAssign for rustix::backend::fs::types::AtFlags

impl SubAssign for rustix::backend::fs::types::AtFlags

impl SubAssign for rustix::backend::fs::types::FallocateFlags

impl SubAssign for rustix::backend::fs::types::FallocateFlags

impl SubAssign for rustix::backend::fs::types::MemfdFlags

impl SubAssign for rustix::backend::fs::types::MemfdFlags

impl SubAssign for rustix::backend::fs::types::Mode

impl SubAssign for rustix::backend::fs::types::Mode

impl SubAssign for rustix::backend::fs::types::OFlags

impl SubAssign for rustix::backend::fs::types::OFlags

impl SubAssign for rustix::backend::fs::types::RenameFlags

impl SubAssign for rustix::backend::fs::types::RenameFlags

impl SubAssign for rustix::backend::fs::types::ResolveFlags

impl SubAssign for rustix::backend::fs::types::ResolveFlags

impl SubAssign for rustix::backend::fs::types::SealFlags

impl SubAssign for rustix::backend::fs::types::SealFlags

impl SubAssign for rustix::backend::fs::types::StatVfsMountFlags

impl SubAssign for rustix::backend::fs::types::StatVfsMountFlags

impl SubAssign for rustix::backend::fs::types::StatxFlags

impl SubAssign for rustix::backend::io::types::DupFlags

impl SubAssign for rustix::backend::io::types::DupFlags

impl SubAssign for rustix::backend::io::types::FdFlags

impl SubAssign for rustix::backend::io::types::FdFlags

impl SubAssign for rustix::backend::io::types::ReadWriteFlags

impl SubAssign for rustix::backend::io::types::ReadWriteFlags

impl SubAssign for MountFlags

impl SubAssign for MountPropagationFlags

impl SubAssign for UnmountFlags

impl SubAssign for rustix::fs::ioctl::IFlags

impl SubAssign for rustix::fs::ioctl::IFlags

impl SubAssign for StatxAttributes

impl SubAssign for rustix::fs::statx::StatxFlags

impl SubAssign for rustix::fs::xattr::XattrFlags

impl SubAssign for rustix::fs::xattr::XattrFlags

impl SubAssign for Timespec

impl SubAssign for CodegenConfig

impl SubAssign for TimeDelta

impl SubAssign for Effects

Examples

let mut effects = anstyle::Effects::BOLD | anstyle::Effects::UNDERLINE;
effects -= anstyle::Effects::BOLD;
assert_eq!(format!("{:?}", effects), "Effects(UNDERLINE)");

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 SignedDuration

impl SubAssign for BigInt

impl SubAssign for BigUint

impl SubAssign for Modifiers

impl SubAssign for 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 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<&BigInt> for BigInt

impl SubAssign<&BigUint> for BigUint

impl SubAssign<i8> for Weekday

impl SubAssign<i8> for Saturating<i8>

impl SubAssign<i8> for Wrapping<i8>

impl SubAssign<i8> for BigInt

impl SubAssign<i16> for Weekday

impl SubAssign<i16> for Saturating<i16>

impl SubAssign<i16> for Wrapping<i16>

impl SubAssign<i16> for BigInt

impl SubAssign<i32> for Weekday

impl SubAssign<i32> for Saturating<i32>

impl SubAssign<i32> for Wrapping<i32>

impl SubAssign<i32> for BigInt

impl SubAssign<i64> for Weekday

impl SubAssign<i64> for Saturating<i64>

impl SubAssign<i64> for Wrapping<i64>

impl SubAssign<i64> for BigInt

impl SubAssign<i128> for Saturating<i128>

impl SubAssign<i128> for Wrapping<i128>

impl SubAssign<i128> for BigInt

impl SubAssign<isize> for Saturating<isize>

impl SubAssign<isize> for Wrapping<isize>

impl SubAssign<isize> for BigInt

impl SubAssign<u8> for Saturating<u8>

impl SubAssign<u8> for Wrapping<u8>

impl SubAssign<u8> for BigInt

impl SubAssign<u8> for BigUint

impl SubAssign<u16> for Saturating<u16>

impl SubAssign<u16> for Wrapping<u16>

impl SubAssign<u16> for BigInt

impl SubAssign<u16> for BigUint

impl SubAssign<u32> for Saturating<u32>

impl SubAssign<u32> for Wrapping<u32>

impl SubAssign<u32> for BigInt

impl SubAssign<u32> for BigUint

impl SubAssign<u64> for Saturating<u64>

impl SubAssign<u64> for Wrapping<u64>

impl SubAssign<u64> for BigInt

impl SubAssign<u64> for BigUint

impl SubAssign<u128> for Saturating<u128>

impl SubAssign<u128> for Wrapping<u128>

impl SubAssign<u128> for BigInt

impl SubAssign<u128> for BigUint

impl SubAssign<usize> for Saturating<usize>

impl SubAssign<usize> for Wrapping<usize>

impl SubAssign<usize> for BigInt

impl SubAssign<usize> for BigUint

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 SubAssign<Effects> for Style

Examples

let mut style = anstyle::Style::new().bold().underline();
style -= anstyle::Effects::BOLD.into();

impl SubAssign<SignedDuration> for rustmax::jiff::civil::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 rustmax::jiff::civil::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 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<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<Span> for rustmax::jiff::civil::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 rustmax::jiff::civil::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 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 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<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<Duration> for rustmax::jiff::civil::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 rustmax::jiff::civil::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 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 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 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 rustmax::tokio::time::Instant

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

impl SubAssign<Duration> for SystemTime

impl<'a> SubAssign<&'a EvalResult> for EvalResult

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

where T: Counter,

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 Histogram<T>

where T: Counter,

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, LaneCount<N>: SupportedLaneCount,

impl<Tz> SubAssign<TimeDelta> for rustmax::chrono::Date<Tz>

where Tz: TimeZone,

impl<Tz> SubAssign<TimeDelta> for rustmax::chrono::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.

impl<Tz> SubAssign<Duration> for rustmax::chrono::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.