Trait OptionAdd 

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

    // Required method
    fn opt_add(self, rhs: Rhs) -> Option<Self::Output>;
}

Trait for values and Options addition.

Implementing this trait leads to the following auto-implementations:

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

This trait is auto-implemented for OptionOperations types implementing Add<Rhs>.

Required Associated Types

type Output

The resulting inner type after applying the addition.

Required Methods

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

Computes the addition.

Returns None if at least one argument is None.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T, InnerRhs> OptionAdd<&Option<InnerRhs>, InnerRhs> for Option<T>

where T: OptionOperations + OptionAdd<InnerRhs>, InnerRhs: Copy,

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

fn opt_add( self, rhs: &Option<InnerRhs>, ) -> Option<<Option<T> as OptionAdd<&Option<InnerRhs>, InnerRhs>>::Output>

impl<T, InnerRhs> OptionAdd<Option<InnerRhs>, InnerRhs> for Option<T>

where T: OptionOperations + OptionAdd<InnerRhs>,

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

fn opt_add( self, rhs: Option<InnerRhs>, ) -> Option<<Option<T> as OptionAdd<Option<InnerRhs>, InnerRhs>>::Output>

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

where T: OptionOperations + OptionAdd<Rhs>,

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

fn opt_add(self, rhs: Rhs) -> Option<<Option<T> as OptionAdd<Rhs>>::Output>

Implementors

impl<T, InnerRhs> OptionAdd<&Option<InnerRhs>, InnerRhs> for T

where T: OptionOperations + OptionAdd<InnerRhs>, InnerRhs: Copy,

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

impl<T, InnerRhs> OptionAdd<Option<InnerRhs>, InnerRhs> for T

where T: OptionOperations + OptionAdd<InnerRhs>,

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

impl<T, Rhs> OptionAdd<Rhs> for T

where T: OptionOperations + Add<Rhs>,

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