Assume there is this select statement:
for {
select {
// ...
// ...
case rcvd <- first():
}
}
The rcvd channel will be set to nil or a chan value, by it's own case or
other cases.
If the rcvd channel is nil, that case should have no effect. But even when
rcvd channel is nil, the first() function will be called.
I did not expect that. Why is that so?
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