Swift version: 5.6
Swift 1.2 was an interim release that fixed some early confusions and annoyances in the language. Its changes weren't big, but they did help clean up and clarify Swift, and helped tide us all over until the release of Swift 2.
The important changes are:
if/let
rather than create a so-called "pyramid of doom" with nested statements.as!
and as?
to mark forced downcasting and optional downcasting respectively.NSString
, NSArray
and NSDictionary
.Set
data type was introduced to handle arrays where each value can appear only once.SPONSORED Play is the first native iOS design tool created for designers and engineers. You can install Play for iOS and iPad today and sign up to check out the Beta of our macOS app with SwiftUI code export. We're also hiring engineers!
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Available from iOS 7.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
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