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…
Before I forget…
Discoveries in Swift and iOS development! By Craig Grummitt
Blog Archives
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…
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…
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…
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…
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…
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…
Tagged with: functions, optional parameters, overloading, parameter defaults, parameters
Posted in Swift
Posted in Swift
