Go OR-Done-Channel Pattern: Difference between revisions
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The <code>for</code>/<code>range</code> syntax is simple and intuitive, but it cannot be used anymore if we want to [[Go_Channels#Use_a_done_Channel|make the loop preemptable by using a <code> channel]]. In that case we need to replace it with a <code>for</code>/<code>select</code> syntax and <code>case</code> for the state of the <code>done</code> channel. | The <code>for</code>/<code>range</code> syntax is simple and intuitive, but it cannot be used anymore if we want to [[Go_Channels#Use_a_done_Channel|make the loop preemptable by using a <code>done</code> channel]]. In that case we need to replace it with a <code>for</code>/<code>select</code> syntax and <code>case</code> for the state of the <code>done</code> channel. |
Revision as of 22:19, 5 February 2024
Internal
Overview
Reading from a channel until the channel is closed can be done by ranging over a channel:
for v := range c {
// do something with the channel value, we exit the loop automatically when the channel is closed
...
}
The for
/range
syntax is simple and intuitive, but it cannot be used anymore if we want to make the loop preemptable by using a done
channel. In that case we need to replace it with a for
/select
syntax and case
for the state of the done
channel.