Curriculum Concurrency Select exercise 1 · mcq
Select
select is Go's primitive for waiting on multiple channel
operations at once. Pick the line that opens a select
block — the shape that's distinct from switch.
TypeScript: Promise.race([...]) is the closest analog
but races resolved values, not channel operations.
TypeScript reference
About this theme
select waits on multiple channel operations and runs the case for whichever is ready first. With a default branch it becomes non-blocking. Paired with time.After(d) it becomes a timeout. This is the closest thing Go has to a "wait on a set of futures" primitive.