Jacob’s Tech Tavern

Jacob’s Tech Tavern

Method Dispatch in Swift: The Complete Guide

How does Swift *really* execute function calls?

Jacob Bartlett's avatar
Jacob Bartlett
Dec 01, 2025

If you’re like me, you’ve worked with a grizzled staff engineer that generously doles out helpful nitpicks to improve the performance of your code.

Perhaps, like me, you’ve also been that grizzled engineer.

You know the sort.

Nitpicks like “this method should be declared fileprivate”, or “keep your generics in the same file where they’re used”, and the al…

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