What does the "t" in dispatch_queue_t stand for?

Question

I can't seem to find out what the "t" in dispatch_queue_t stands for from Apple's GCD documentation.

At first I thought it was "thread" but after reading this question I think it means typedef. If that is the case, what is dispatch_queue_t a typedef of?

Answer 1

It stands for "type". If the docs don't specify what dispatch_queue_t is a typedef for, then it's an opaque type: you're not supposed to know, because it's an implementation detail (not part of the API spec).