Hannibal #selector - Big Nerd Ranch
Just want a reminder of the syntax? Jump to the TL;DR. The selector is key to Objective-C’s dynamic runtime nature. It’s just a name that’s used, at runtime, as a key into a dictionary of function pointers. Whenever you send a message to an Objective-C object, you’re actually using a selector to look up a function to call. Sometimes selectors bubble up in Cocoa/CocoaTouch API, and you will need to
What is the Swift equivalent of respondsToSelector?
I've googled but not been able to find out what the swift equivalent to respondsToSelector: is. This is the only thing I could find (Swift alternative to respondsToSelector:) but isn't too relevant in my case as its checking the existence of the delegate, I don't have a delegate I just want to check if a new API exists or not when running on the device and if not fall back to a previous version of
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