Trait orx_closure::Fun

pub trait Fun<In, Out> {
    // Required method
    fn call(&self, input: In) -> Out;
}

Function trait representing In -> Out transformation.

It provides the common interface for closures, such as Closure<Capture, In, Out>, over all capture types.

Furthermore, this trait enables to forget about the capture, or equivalently drop the Capture generic parameter, by using dyn Fun<In, Out> trait object.

Relation with Fn

Fun<In, Out> can be considered equivalent to Fn(In) -> Out. The reason it co-exists is that it is not possible to implement fn_traits in stable version.

However, all that implements Fn(In) -> Out also auto-implements Fun<In, Out>.

Required Methods

fn call(&self, input: In) -> Out

Calls the function with the given input and returns the produced output.

Implementors

impl<C1, C2, C3, C4, In, Out> Fun<In, Out> for ClosureOneOf4<C1, C2, C3, C4, In, Out>

impl<C1, C2, C3, In, Out> Fun<In, Out> for ClosureOneOf3<C1, C2, C3, In, Out>

impl<C1, C2, In, Out> Fun<In, Out> for ClosureOneOf2<C1, C2, In, Out>

impl<Capture, In, Out> Fun<In, Out> for Closure<Capture, In, Out>

impl<In, Out, F: Fn(In) -> Out> Fun<In, Out> for F