Select

Go Nil Channels Disable Select Cases

A send or receive on a nil Go channel can never proceed. Inside a select, that property removes the associated communication case from the set of cases eligible to run, without requiring a separate condition around the select. This behavior follows directly from the channel contract. The zero value of a channel is nil, and a nil channel is never ready for communication. A standalone send or receive therefore blocks indefinitely. A select treats the same operation as a case that cannot currently proceed.