Is there a difference between performSelector and performSelector:withDelay of 0?

Question

Rupert · Accepted Answer

Calling performSelector will call that function synchronously. Calling performSelector:withDelay: of 0 will perform that function on the next run loop.

Yes · Answer

Yes. The difference is when the selector is executed. performSelector executes the selector immediately whereas performSelector:withDelay of 0 does not, as you can see from apple's documentation: "Specifying a delay of 0 does not necessarily cause the selector to be performed immediately."

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