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Editorial Team
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Asked: 2026-05-26T21:38:07+00:00

I have a function which I would like to take in an NSString and

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I have a function which I would like to take in an NSString and an int arguments and then use the switch statement in order to return a calculated value, as in multiply the int by some constant, depending on what NSString is supplied.

Obviously, a switch statement doesn’t work for objects in Objective-C. So what is the fastest alternative? Is it if-else statements? Or is there a more elegant method?

EDIT

The reason why I care about performance is that I am modifying UI elements the user is watching as the ultimate result of these calculations and I don’t want that to feel sluggish.

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1 Answer

  1. Editorial Team

    Don’t optimize prematurely. Just make an NSDictionary that maps each string to its multiplier. Then see if that’s fast enough.

    If you need to do a different operation depending on the string, make each value in the dictionary a block that performs the appropriate operation.

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