Book: explain fuse and select #88
Description
The select! macro together with FuturesExt::fuse, FusedStream and FusedFuture is a pretty powerful mechanism which isn't all that easy to understand. The current version of the doc only mentions select! in passing and doesn't address fuse at all.
Linking to the respective section in the async book, or to the trait and function definitions might help, although I am not sure how stable they are.