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 Build a functional Twitter clone using APIs and SwiftUI with Stream's 7-part tutorial series. In just four days, learn how to create your own Twitter using Stream Chat, Algolia, 100ms, Mux, and RevenueCat.
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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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