Monday, May 8, 2017 [Tweets] [Favorites]

foreach Using Objective-C Generics

Peter Steinberger shares an Objective-C macro that lets you write foreach (object, collection), where object gets the proper type based on the collection’s type parameter. The benefits: you save space and typing vs. a standard for loop, yet you still get static checking and auto-completion. The code ends up looking like my macro from the old days before NSFastEnumeration and for…in loops.

Update (2017-05-15): Peter Steinberger:

I wrote a header that overrides mutable/Copy to pass along types+generic type data in Objective-C.

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