Blog Archives

Swift 5 – it’s alive!

It’s been a couple of weeks now since Swift 5 has arrived, with a bunch of features, such as: ABI stability source compatibility isMultiple – a fancy technique for checking if a number is a multiple of another number. Dictionary

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Optionals in Swift explained – with a cat in a box!

If you’ve come to Swift from a language that doesn’t use optionals, you might find the concept a little strange and the syntax unfamiliar at first. Sometimes it helps to learn the unfamiliar with something familiar – in my lightning tour

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Get a continent from longitude-latitude

For a project I’m working on I needed to know if a point (latitude,longitude) was in a continent, and if so, which one! To do this, first I set up a Continent enum to work with, making it a String

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Getting the keyboard height

Some time ago I answered a question in StackOverflow comparing the keyboard height on the iPhone X and the iPhone 8: I got these heights by: 1. Adding an observer of the UIResponder.keyboardWillShowNotification notification: (In fact, if we want all keyboard frame

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Lightning tour of closures in Swift

Check out this video tutorial with a lightning tour of closures in Swift. It covers: Functions as data types Basic closure syntax Trailing closures   If you’re interested in more of these sorts of videos, I’ll be posting frequently over on

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Overloading functions with default parameter values

Here’s a Swifty conundrum for you! First a quick recap. Here’s a simple function with no parameters. Call it and “Hello World” will print to the console. Here’s another function with the same name. This time it has a parameter

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Lightning tour of functions in Swift

Check out this video tutorial with a lightning tour of functions in Swift. It covers: Parameter default values Optional function parameters Overloading a function If you’re interested in more of these sorts of videos, I’ll be posting frequently over on the

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