Swift version: 5.6
Swift’s booleans have a
toggle() method that flip them between true and false. That might sound simple, but the end result makes for much more natural Swift code:
var loggedIn = false loggedIn.toggle()
This is particularly useful in more complex data structures:
myVar.prop1.prop2.enabled.toggle() avoids the potential typing errors that could be caused using manual negation.
SAVE 50% To celebrate WWDC23, all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.
Available from iOS 8.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.