Trait gstreamer::prelude::OptionOverflowingSub

pub trait OptionOverflowingSub<Rhs = Self, InnerRhs = Rhs> {
    type Output;
    fn opt_overflowing_sub(self, rhs: Rhs) -> Option<(Self::Output, bool)>;
}

Trait for values and Options overflowing substraction.

Implementing this trait leads to the following auto-implementations:

• OptionOverflowingSub<Option<InnerRhs>> for T.
• OptionOverflowingSub<Rhs> for Option<T>.
• OptionOverflowingSub<Option<InnerRhs>> for Option<T>.
• … and some variants with references.

Note that since the std library doesn’t define any OverflowingSub trait, users must provide the base implementation for the inner type.

Associated Types

type Output

The resulting inner type after applying the substraction.

Required methods

fn opt_overflowing_sub(self, rhs: Rhs) -> Option<(Self::Output, bool)>

Returns a tuple of the substraction along with a boolean indicating whether an arithmetic overflow would occur. If an overflow would have occurred then self is returned.

Returns None if at least one argument is None.

Implementations on Foreign Types

impl OptionOverflowingSub<u64, u64> for u64

type Output = u64

pub fn opt_overflowing_sub(
    self,
    rhs: u64
) -> Option<(<u64 as OptionOverflowingSub<u64, u64>>::Output, bool)>

impl OptionOverflowingSub<i8, i8> for i8

type Output = i8

pub fn opt_overflowing_sub(
    self,
    rhs: i8
) -> Option<(<i8 as OptionOverflowingSub<i8, i8>>::Output, bool)>

impl OptionOverflowingSub<i16, i16> for i16

type Output = i16

pub fn opt_overflowing_sub(
    self,
    rhs: i16
) -> Option<(<i16 as OptionOverflowingSub<i16, i16>>::Output, bool)>

impl OptionOverflowingSub<u32, u32> for u32

type Output = u32

pub fn opt_overflowing_sub(
    self,
    rhs: u32
) -> Option<(<u32 as OptionOverflowingSub<u32, u32>>::Output, bool)>

impl OptionOverflowingSub<u16, u16> for u16

type Output = u16

pub fn opt_overflowing_sub(
    self,
    rhs: u16
) -> Option<(<u16 as OptionOverflowingSub<u16, u16>>::Output, bool)>

impl OptionOverflowingSub<u8, u8> for u8

type Output = u8

pub fn opt_overflowing_sub(
    self,
    rhs: u8
) -> Option<(<u8 as OptionOverflowingSub<u8, u8>>::Output, bool)>

impl OptionOverflowingSub<i64, i64> for i64

type Output = i64

pub fn opt_overflowing_sub(
    self,
    rhs: i64
) -> Option<(<i64 as OptionOverflowingSub<i64, i64>>::Output, bool)>

impl OptionOverflowingSub<i32, i32> for i32

type Output = i32

pub fn opt_overflowing_sub(
    self,
    rhs: i32
) -> Option<(<i32 as OptionOverflowingSub<i32, i32>>::Output, bool)>

impl OptionOverflowingSub<i128, i128> for i128

type Output = i128

pub fn opt_overflowing_sub(
    self,
    rhs: i128
) -> Option<(<i128 as OptionOverflowingSub<i128, i128>>::Output, bool)>

impl OptionOverflowingSub<u128, u128> for u128

type Output = u128

pub fn opt_overflowing_sub(
    self,
    rhs: u128
) -> Option<(<u128 as OptionOverflowingSub<u128, u128>>::Output, bool)>

impl<T, Rhs> OptionOverflowingSub<Rhs, Rhs> for Option<T> where
    T: OptionOperations + OptionOverflowingSub<Rhs, Rhs>, 

type Output = <T as OptionOverflowingSub<Rhs, Rhs>>::Output

pub fn opt_overflowing_sub(
    self,
    rhs: Rhs
) -> Option<(<Option<T> as OptionOverflowingSub<Rhs, Rhs>>::Output, bool)>

impl<T, InnerRhs> OptionOverflowingSub<Option<InnerRhs>, InnerRhs> for Option<T> where
    T: OptionOperations + OptionOverflowingSub<InnerRhs, InnerRhs>, 

type Output = <T as OptionOverflowingSub<InnerRhs, InnerRhs>>::Output

pub fn opt_overflowing_sub(
    self,
    rhs: Option<InnerRhs>
) -> Option<(<Option<T> as OptionOverflowingSub<Option<InnerRhs>, InnerRhs>>::Output, bool)>

impl<'_, T, InnerRhs> OptionOverflowingSub<&'_ Option<InnerRhs>, InnerRhs> for Option<T> where
    T: OptionOperations + OptionOverflowingSub<InnerRhs, InnerRhs>,
    InnerRhs: Copy, 

type Output = <T as OptionOverflowingSub<InnerRhs, InnerRhs>>::Output

pub fn opt_overflowing_sub(
    self,
    rhs: &Option<InnerRhs>
) -> Option<(<Option<T> as OptionOverflowingSub<&'_ Option<InnerRhs>, InnerRhs>>::Output, bool)>

Implementors

impl OptionOverflowingSub<Buffers, Buffers> for Buffers

type Output = Self

impl OptionOverflowingSub<Bytes, Bytes> for Bytes

type Output = Self

impl OptionOverflowingSub<Default, Default> for Default

type Output = Self

impl OptionOverflowingSub<Percent, Percent> for Percent

type Output = Self

impl OptionOverflowingSub<ClockTime, ClockTime> for ClockTime

type Output = Self

impl<'_, T, InnerRhs> OptionOverflowingSub<&'_ Option<InnerRhs>, InnerRhs> for T where
    T: OptionOperations + OptionOverflowingSub<InnerRhs, InnerRhs>,
    InnerRhs: Copy, 

type Output = <T as OptionOverflowingSub<InnerRhs, InnerRhs>>::Output

impl<T, InnerRhs> OptionOverflowingSub<Option<InnerRhs>, InnerRhs> for T where
    T: OptionOperations + OptionOverflowingSub<InnerRhs, InnerRhs>, 

type Output = <T as OptionOverflowingSub<InnerRhs, InnerRhs>>::Output