Channel select

V has a select statement, which you can use to wait on multiple channels and their operations. A select statement can have multiple branches and cases, all of which can be used to represent channel push or pop operations. It can also have a timeout case, which we can define to exit out of select if none of the channel operation cases get triggered.

The select statement is syntactically similar to a match block, except that the cases of a select do not have to be of channels that accept similar data types. But for match, as explained in Chapter 6, Conditionals and Iterative Statements, all the conditional branches need to be of similar data types.

The following are a few points to keep note of when working with select statements:

• The select statement randomly picks the cases that are ready to be executed.
• The select statement blocks other cases until the active case finishes and exits out of the case.
• The cases of select statements can be of any...