Trait FilterMapDispatch 

pub trait FilterMapDispatch<'a, Brand: Kind_cdc7cd43dac7585f, A: 'a, B: 'a, FA, Marker> {
    // Required method
    fn dispatch(self, fa: FA) -> <Brand as Kind_cdc7cd43dac7585f>::Of<'a, B>;
}

Trait that routes a filter_map operation to the appropriate type class method.

The Marker type parameter is an implementation detail resolved by the compiler from the closure’s argument type; callers never specify it directly. The FA type parameter is inferred from the container argument: owned for Val dispatch, borrowed for Ref dispatch.

Type Parameters

• 'a: The lifetime of the values.
• Brand: The brand of the filterable.
• A: The type of the value(s) inside the filterable.
• B: The type of the result(s) of applying the function.
• FA: The container type (owned or borrowed), inferred from the argument.
• Marker: Dispatch marker type, inferred automatically. Either Val or Ref.

Required Methods

fn dispatch(self, fa: FA) -> <Brand as Kind_cdc7cd43dac7585f>::Of<'a, B>

Perform the dispatched filter_map operation.

Type Signature

(self, FA) -> Brand B

Parameters

• self: The closure implementing this dispatch.
• fa: The filterable instance containing the value(s).

Returns

A new filterable instance containing only the values for which the function returned Some.

Examples

use fp_library::{
	brands::*,
	functions::explicit::*,
};

let result = filter_map::<OptionBrand, _, _, _, _>(
	|x: i32| if x > 3 { Some(x * 2) } else { None },
	Some(5),
);
assert_eq!(result, Some(10));

Implementors

impl<'a, 'b, Brand, A, B, F> FilterMapDispatch<'a, Brand, A, B, &'b <Brand as Kind_cdc7cd43dac7585f>::Of<'a, A>, Ref> for F

where Brand: RefFilterable, A: 'a, B: 'a, F: Fn(&A) -> Option<B> + 'a,

Routes Fn(&A) -> Option<B> closures to RefFilterable::ref_filter_map.

The container must be passed by reference (&fa).

Type Parameters

• 'a: The lifetime of the values.
• 'b: The borrow lifetime.
• Brand: The brand of the filterable.
• A: The type of the value(s) inside the filterable.
• B: The type of the result(s) of applying the function.
• F: The closure type.

impl<'a, Brand, A, B, F> FilterMapDispatch<'a, Brand, A, B, <Brand as Kind_cdc7cd43dac7585f>::Of<'a, A>, Val> for F

where Brand: Filterable, A: 'a, B: 'a, F: Fn(A) -> Option<B> + 'a,

Routes Fn(A) -> Option<B> closures to Filterable::filter_map.

Type Parameters

• 'a: The lifetime of the values.
• Brand: The brand of the filterable.
• A: The type of the value(s) inside the filterable.
• B: The type of the result(s) of applying the function.
• F: The closure type.