Hi,
I have the following problem:
I have a set of channels #{ ... }
some of the channels are closed, some of the channels are open
* for the channels that are open, I want to (>! chan msg)
* for the channels that are closed, I want to remove the channel from the
hash-set
## Problems:
(1) (>! ... ...) always returns nil, regardless of whether the channel is
open or closed, and thus useless
(2) I could use (<! ... ) to read from the channel to see if it's nil, but
then would remove an item from the channel, which I don't want to do
## Question:
Thus, without changing the state of the channel, is there a way to see if
the channel is open/closed?
Thanks!
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