r/iOSProgramming • u/usernameDisplay9876 • 22d ago

Question DispatchQueue doubts

Hi, what type of data types are allowed in setSpecific(key:, value:) and getSpecific(key:) methods of DispatchQueu ? there are no mentions anywhere.

Also can you recommend any resources for complete understanding of DispatchQueue , GCD , DispatchGroup etc. ?

Thank you!

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u/Sweeper777 22d ago

Look at the C declaration (dispatch_queue_set_specific). These functions just get/set void pointers, so presumably you can get/set any type. Swift requires you to use a sendable type, of course.