Trait async_iterator::Iterator

pub trait Iterator {
    type Item;

    // Required method
    async fn next(&mut self) -> Option<Self::Item>;

    // Provided methods
    fn size_hint(&self) -> (usize, Option<usize>) { ... }
    fn map<B, F>(self, f: F) -> Map<Self, F>
       where Self: Sized,
             F: FnMut(Self::Item) -> B { ... }
    async fn collect<B: FromIterator<Self::Item>>(self) -> B
       where Self: Sized { ... }
    fn lend(self) -> Lend<Self>
       where Self: Sized { ... }
    fn lend_mut(self) -> LendMut<Self>
       where Self: Sized { ... }
}

An interface for dealing with iterators.

Required Associated Types

type Item

The type of the elements being iterated over.

Required Methods

async fn next(&mut self) -> Option<Self::Item>

Advances the iterator and returns the next value.

Provided Methods

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the iterator.

fn map<B, F>(self, f: F) -> Map<Self, F>

where Self: Sized, F: FnMut(Self::Item) -> B,

Takes a closure and creates an iterator which calls that closure on each element.

async fn collect<B: FromIterator<Self::Item>>(self) -> B

where Self: Sized,

Transforms an iterator into a collection.

fn lend(self) -> Lend<Self>

where Self: Sized,

Creates an iterator which yields a reference to self as well as the next value.

fn lend_mut(self) -> LendMut<Self>

where Self: Sized,

Creates an iterator which yields a mutable reference to self as well as the next value.

Object Safety

This trait is not object safe.

Implementors

impl<I, F, B, Fut> Iterator for Map<I, F>

where I: Iterator, F: FnMut(I::Item) -> Fut, Fut: Future<Output = B>,

type Item = B