Struct async_std::stream::TakeWhile

pub struct TakeWhile<S, P> { /* fields omitted */ }

A stream that yields elements based on a predicate.

This struct is created by the take_while method on Stream. See its documentation for more.

Trait Implementations

impl<S: Debug, P: Debug> Debug for TakeWhile<S, P>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<S, P> Stream for TakeWhile<S, P> where
    S: Stream,
    P: FnMut(&S::Item) -> bool, 

type Item = S::Item

Values yielded by the stream.

fn poll_next(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>
) -> Poll<Option<Self::Item>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if the value is not yet available, and returning None if the stream is exhausted.

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

Returns the bounds on the remaining length of the stream.

impl<'__pin, S, P> Unpin for TakeWhile<S, P> where
    __Origin<'__pin, S, P>: Unpin,