pub trait OptionCheckedDiv<Rhs = Self, InnerRhs = Rhs> {
    type Output;

    // Required method
    fn opt_checked_div(self, rhs: Rhs) -> Result<Option<Self::Output>, Error>;
}
Expand description

Trait for values and Options checked division.

Implementing this trait leads to the following auto-implementations:

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

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

Required Associated Types§

type Output

The resulting inner type after applying the division.

Required Methods§

fn opt_checked_div(self, rhs: Rhs) -> Result<Option<Self::Output>, Error>

Computes the checked division.

  • Returns Ok(Some(result)) if result could be computed.
  • Returns Ok(None) if at least one argument is None.
  • Returns Err(Error::Overflow) if an overflow occured.
  • Returns Err(Error::DivisionByZero) if rhs is zero.

Implementations on Foreign Types§

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impl OptionCheckedDiv for i8

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type Output = i8

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fn opt_checked_div( self, rhs: i8 ) -> Result<Option<<i8 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for i16

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type Output = i16

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fn opt_checked_div( self, rhs: i16 ) -> Result<Option<<i16 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for i32

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type Output = i32

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fn opt_checked_div( self, rhs: i32 ) -> Result<Option<<i32 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for i64

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type Output = i64

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fn opt_checked_div( self, rhs: i64 ) -> Result<Option<<i64 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for i128

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type Output = i128

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fn opt_checked_div( self, rhs: i128 ) -> Result<Option<<i128 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for u8

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type Output = u8

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fn opt_checked_div( self, rhs: u8 ) -> Result<Option<<u8 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for u16

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type Output = u16

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fn opt_checked_div( self, rhs: u16 ) -> Result<Option<<u16 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for u32

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type Output = u32

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fn opt_checked_div( self, rhs: u32 ) -> Result<Option<<u32 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for u64

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type Output = u64

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fn opt_checked_div( self, rhs: u64 ) -> Result<Option<<u64 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv for u128

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type Output = u128

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fn opt_checked_div( self, rhs: u128 ) -> Result<Option<<u128 as OptionCheckedDiv>::Output>, Error>

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impl OptionCheckedDiv<u32> for Duration

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impl<T, InnerRhs> OptionCheckedDiv<&Option<InnerRhs>, InnerRhs> for Option<T>
where T: OptionOperations + OptionCheckedDiv<InnerRhs>, InnerRhs: Copy,

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type Output = <T as OptionCheckedDiv<InnerRhs>>::Output

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fn opt_checked_div( self, rhs: &Option<InnerRhs> ) -> Result<Option<<Option<T> as OptionCheckedDiv<&Option<InnerRhs>, InnerRhs>>::Output>, Error>

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

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type Output = <T as OptionCheckedDiv<InnerRhs>>::Output

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fn opt_checked_div( self, rhs: Option<InnerRhs> ) -> Result<Option<<Option<T> as OptionCheckedDiv<Option<InnerRhs>, InnerRhs>>::Output>, Error>

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impl<T, Rhs> OptionCheckedDiv<Rhs> for Option<T>

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type Output = <T as OptionCheckedDiv<Rhs>>::Output

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fn opt_checked_div( self, rhs: Rhs ) -> Result<Option<<Option<T> as OptionCheckedDiv<Rhs>>::Output>, Error>

Implementors§

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impl OptionCheckedDiv for Signed<u32>

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impl OptionCheckedDiv for Signed<u64>

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impl OptionCheckedDiv for Signed<usize>

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impl OptionCheckedDiv for Signed<Buffers>

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impl OptionCheckedDiv for Signed<Bytes>

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impl OptionCheckedDiv for Signed<ClockTime>

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impl OptionCheckedDiv for Signed<Default>

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impl OptionCheckedDiv for Signed<Other>

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impl OptionCheckedDiv for Signed<Percent>

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impl OptionCheckedDiv for Buffers

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type Output = u64

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impl OptionCheckedDiv for Bytes

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type Output = u64

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impl OptionCheckedDiv for ClockTime

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type Output = u64

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impl OptionCheckedDiv for Default

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type Output = u64

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impl OptionCheckedDiv for Other

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type Output = u64

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impl OptionCheckedDiv for Percent

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type Output = u32

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impl OptionCheckedDiv<i32> for Signed<u32>

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impl OptionCheckedDiv<i32> for Signed<Percent>

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impl OptionCheckedDiv<i64> for Signed<u64>

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impl OptionCheckedDiv<i64> for Signed<Buffers>

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impl OptionCheckedDiv<i64> for Signed<Bytes>

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impl OptionCheckedDiv<i64> for Signed<ClockTime>

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impl OptionCheckedDiv<i64> for Signed<Default>

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impl OptionCheckedDiv<i64> for Signed<Other>

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impl OptionCheckedDiv<isize> for Signed<usize>

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impl OptionCheckedDiv<u32> for Signed<u32>

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impl OptionCheckedDiv<u32> for Signed<Percent>

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impl OptionCheckedDiv<u32> for Percent

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impl OptionCheckedDiv<u64> for Signed<u64>

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impl OptionCheckedDiv<u64> for Signed<Buffers>

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impl OptionCheckedDiv<u64> for Signed<Bytes>

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impl OptionCheckedDiv<u64> for Signed<ClockTime>

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impl OptionCheckedDiv<u64> for Signed<Default>

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impl OptionCheckedDiv<u64> for Signed<Other>

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impl OptionCheckedDiv<u64> for Buffers

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impl OptionCheckedDiv<u64> for Bytes

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impl OptionCheckedDiv<u64> for ClockTime

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impl OptionCheckedDiv<u64> for Default

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impl OptionCheckedDiv<u64> for Other

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impl OptionCheckedDiv<usize> for Signed<usize>

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impl<T, InnerRhs> OptionCheckedDiv<&Option<InnerRhs>, InnerRhs> for T
where T: OptionOperations + OptionCheckedDiv<InnerRhs>, InnerRhs: Copy,

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type Output = <T as OptionCheckedDiv<InnerRhs>>::Output

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

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type Output = <T as OptionCheckedDiv<InnerRhs>>::Output