Struct ordered_stream::MapOrdering

pub struct MapOrdering<S, MapInto, MapFrom> { /* private fields */ }

A stream for the map_ordering function.

Implementations

impl<S, I, F> MapOrdering<S, I, F>

pub fn into_inner(self) -> S

Convert to source stream.

Trait Implementations

impl<S: Debug, MapInto: Debug, MapFrom: Debug> Debug for MapOrdering<S, MapInto, MapFrom>

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

Formats the value using the given formatter.

impl<S, MapInto, MapFrom, NewOrdering, NewData> OrderedStream for MapOrdering<S, MapInto, MapFrom>where S: OrderedStream, MapInto: FnMut(S::Ordering, S::Data) -> (NewOrdering, NewData), MapFrom: FnMut(&NewOrdering) -> Option<S::Ordering>, NewOrdering: Ord,

type Data = NewData

The unordered data carried by this stream

type Ordering = NewOrdering

The type ordered by this stream.

fn poll_next_before( self: Pin<&mut Self>, cx: &mut Context<'_>, before: Option<&Self::Ordering> ) -> Poll<PollResult<Self::Ordering, Self::Data>>

Attempt to pull out the next value of this stream, registering the current task for wakeup if needed, and returning NoneBefore if it is known that the stream will not produce any more values ordered before the given point.

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

Returns the bounds on the remaining length of the stream.

fn position_hint(&self) -> Option<MaybeBorrowed<'_, Self::Ordering>>

The minimum value of the ordering for any future items.

impl<'__pin, S, MapInto, MapFrom> Unpin for MapOrdering<S, MapInto, MapFrom>where __Origin<'__pin, S, MapInto, MapFrom>: Unpin,