chickadee » gochan » gochan-after

gochan-after duration/msprocedure

Returns a gochan that will "send" a single message after duration/ms milliseconds of its creation. The message is the (current-milliseconds) value at the time of the timeout (not when the message was received). Receiving more than once on an gochan-after channel will block indefinitely or deadlock the second time.

 ((chan1 -> msg)                (print "chan1 says " msg))
 (((gochan-after 1000) -> when) (print "chan1 took too long")))

You cannot send to or close a timer channel. These are special records that contain information about when the next timer will trigger. Creating timers is a relatively cheap operation, and unlike golang.time.After, may be garbage-collected before the timer triggers. Creating a timer does not spawn a new thread.