Clojurians Log v2
Clojure programming
Channels
Apps
core-async
roklenarcic 2019-10-16T20:26:06.006200Z
does it matter if channel is left unclosed?
roklenarcic 2019-10-16T20:26:54.007200Z
if I close a derived channel (one created by async/merge or async/reduce does it close underlying channel? Does any of this matter?
2019-10-16T20:31:38.008100Z
it depends, the channels returned by the combinators that come with core.async generally close the channel when they are done with them, so you don't need to (not always, read the docstrings)
roklenarcic 2019-10-16T20:38:46.008500Z
ah but what if I call close! on combinated channel
roklenarcic 2019-10-16T20:38:53.008700Z
will it close underlying ones?
2019-10-16T20:46:34.009700Z
it depends on the combinator
2019-10-16T20:46:54.010100Z
some no, some yes, some take a close? argument
2019-10-16T20:48:35.011700Z
channels are not a global resource, so closing them isn't required for them to be garbage collected or whatever, but because channels are often used for communication between different parts of a program it is good practice to close them to signal to whoever is at the other end that you are no longer sending or receiving