ref: 954b2fd7a8a0a65a077b61a5932ed54d3e3ef6a5
dir: /lib/thread/test/future.myr/
use std use sys use thread const main = { var f f = thread.mkfut() thread.futput(f, 123) std.assert(thread.futget(f) == 123, "the future is broken\n") f = thread.mkfut() thread.spawn({ std.usleep(10_000) thread.futput(f, 321) }) std.assert(thread.futget(f) == 321, "the future is broken\n") }