Trait enso_prelude::OptionOps[−][src]

pub trait OptionOps {
    type Item;
    fn map_none<F>(self, f: F) -> Self
    where
        F: FnOnce();

    fn map_ref<U, F>(&self, f: F) -> Option<U>
    where
        F: FnOnce(&Self::Item) -> U;

    fn for_each<U, F>(self, f: F)
    where
        F: FnOnce(Self::Item) -> U;

    fn for_each_ref<U, F>(&self, f: F)
    where
        F: FnOnce(&Self::Item) -> U;

    fn contains_if<F>(&self, f: F) -> bool
    where
        F: FnOnce(&Self::Item) -> bool;
}
Expand description

Adds mapping methods to the Option type.

Associated Types

type Item[src]

Loading content...

Required methods

fn map_none<F>(self, f: F) -> Self where
    F: FnOnce(), [src]

fn map_ref<U, F>(&self, f: F) -> Option<U> where
    F: FnOnce(&Self::Item) -> U, [src]

fn for_each<U, F>(self, f: F) where
    F: FnOnce(Self::Item) -> U, [src]

fn for_each_ref<U, F>(&self, f: F) where
    F: FnOnce(&Self::Item) -> U, [src]

fn contains_if<F>(&self, f: F) -> bool where
    F: FnOnce(&Self::Item) -> bool, [src]

Expand description

Returns true if option contains Some with value matching given predicate.

Loading content...

Implementations on Foreign Types

impl<T> OptionOps for Option<T>[src]

type Item = T

fn map_none<F>(self, f: F) -> Self where
    F: FnOnce(),
    T: Sized, [src]

fn map_ref<U, F>(&self, f: F) -> Option<U> where
    F: FnOnce(&Self::Item) -> U, [src]

fn for_each<U, F>(self, f: F) where
    F: FnOnce(Self::Item) -> U, [src]

fn for_each_ref<U, F>(&self, f: F) where
    F: FnOnce(&Self::Item) -> U, [src]

fn contains_if<F>(&self, f: F) -> bool where
    F: FnOnce(&Self::Item) -> bool, [src]

Loading content...

Implementors

Loading content...