Trait resiter::filter_map::FilterMap

pub trait FilterMap<O, E>: Sized {
    fn filter_map_ok<F, O2>(self, _: F) -> FilterMapOk<Self, F>
    where
        F: FnMut(O) -> Option<O2>;
    fn filter_map_err<F, E2>(self, _: F) -> FilterMapErr<Self, F>
    where
        F: FnMut(E) -> Option<E2>;
}

Extension trait for Iterator<Item = Result<O, E>> to selectively transform and map Oks and Errors.

Required methods

Important traits for FilterMapOk<I, F>

impl<I, O, E, F, O2> Iterator for FilterMapOk<I, F> where
    I: Iterator<Item = Result<O, E>>,
    F: FnMut(O) -> Option<O2>,  type Item = Result<O2, E>;

fn filter_map_ok<F, O2>(self, _: F) -> FilterMapOk<Self, F> where
    F: FnMut(O) -> Option<O2>, 

Important traits for FilterMapErr<I, F>

impl<I, O, E, F, E2> Iterator for FilterMapErr<I, F> where
    I: Iterator<Item = Result<O, E>>,
    F: FnMut(E) -> Option<E2>,  type Item = Result<O, E2>;

fn filter_map_err<F, E2>(self, _: F) -> FilterMapErr<Self, F> where
    F: FnMut(E) -> Option<E2>, 

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Implementors

impl<I, O, E> FilterMap<O, E> for I where
    I: Iterator<Item = Result<O, E>> + Sized, 

Important traits for FilterMapOk<I, F>

impl<I, O, E, F, O2> Iterator for FilterMapOk<I, F> where
    I: Iterator<Item = Result<O, E>>,
    F: FnMut(O) -> Option<O2>,  type Item = Result<O2, E>;

fn filter_map_ok<F, O2>(self, f: F) -> FilterMapOk<Self, F> where
    F: FnMut(O) -> Option<O2>, 

Important traits for FilterMapErr<I, F>

impl<I, O, E, F, E2> Iterator for FilterMapErr<I, F> where
    I: Iterator<Item = Result<O, E>>,
    F: FnMut(E) -> Option<E2>,  type Item = Result<O, E2>;

fn filter_map_err<F, E2>(self, f: F) -> FilterMapErr<Self, F> where
    F: FnMut(E) -> Option<E2>, 

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