Wiki

Single-issue posts dealing with a particular class or problem.

Spaceship Operator

Jan 1 2017

Spaceship Operator

Xcode 8.0, Swift 3, OSX 10.11 The following is a good example of creating your own operators. In the two years since first writing this, I have not found an actual use for this, but it appears to be a common operator in Ruby, and has been implemented several times in Swift. My example code […]

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Colouring buttons

Dec 30 2016

Colouring buttons

(macOS 10.11; Xcode 8.0) This post deals with colouring buttons. Some of the techniques described are against Apple’s InterfaceDesign guidelines; others are simply against the rules of good taste. This post is an exploration of what is possible and will provide a handy reference in the future if I ever think ‘oh, I wish I […]

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Nov 27 2016

Basic (generic) swap function

(Swift 3) var a: Int = 15 var b: Int = 12 func swap( a: inout Int, b: inout Int){ (a, b) = (b, a) } print(“a is \(a) “) //15 swap(a: &a, b: &b) print(“a is \(a) “) //12 So far, so good. I really like that this is doing away with the extra […]

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