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2018-03-01
Channels
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I am core.async newbie, and do not understand concept of chan status(open/close). I want to check whether my chan is closed. Are there any function to check status of chan?
there are...but they're hidden, undocumented, and subject to change
clojure.core.async.impl.protocols/closed?
will do what you want; but I believe it's generally better to try and architect your system so you don't need to care if a channel is closed
if you read or write to a chan, and the op returns nil, it's closed
since the act of reading or writing doesn't have other side effects, it's safe to attempt the >!, <!, etc. and check return value and take other action if it returned nil