Swift Tutorial - Extension (Swift protocol extension and Swift struct extension)
In this Swift 5.5 tutorial we'll look at Swift extension and how to do protocol extension and struct extension. Extensions in Swift can take some time to get used to, but are incredibly useful. Swift extensions allow you to, well, extend functionality of types. You can extend an Int, String, Double, a class, a struct, a protocol, etc. Very useful for adding your own functionality and keeping your code clean.
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