Module future 

Runtime-neutral helpers for Futures, built on the standard library only.

No reactor, timer or thread pool is involved, so none of it depends on tokio, async-std or any other runtime: block_on runs a future on the current thread, join and join_all combine futures on one task, and now_or_never and yield_now are the small building blocks around them.

Functions

block_on

Runs future to completion on the current thread and returns its output.

join

Runs two futures concurrently and completes with both outputs, once both are done.

join_all

Runs any number of futures concurrently and completes with all their outputs, in the order the futures were given.

now_or_never

Polls future exactly once and returns its output if it was already ready.

yield_now

A future that gives other tasks a turn: it is pending once, then completes.