Kas on lubatud saada teavet kanalilt, millel on seatud suletud režiim?

In Go, if a channel is closed, you can still receive data from it until the channel buffer is emptied. After all data has been read, further read operations from a closed channel return the zero value of the channel type and a flag indicating that the channel is closed.

This means it is permissible to receive information from a closed channel, but you should check the second returned value to understand whether there is still data or if the channel is completely empty.

Example:

data, ok := <-ch
if !ok {
    // channel is closed and empty
}

Attempting to send data to a closed channel will cause a panic.