Trait async_std::stream::FusedStream [−][src]
A stream that always continues to yield None when exhausted.
Calling next on a fused stream that has returned None once is guaranteed
to return None again. This trait should be implemented by all streams
that behave this way because it allows optimizing Stream::fuse.
Note: In general, you should not use FusedStream in generic bounds if
you need a fused stream. Instead, you should just call Stream::fuse
on the stream. If the stream is already fused, the additional Fuse
wrapper will be a no-op with no performance penalty.