Swift version: 5.2
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/letrather than create a so-called "pyramid of doom" with nested statements.
as?to mark forced downcasting and optional downcasting respectively.
Setdata type was introduced to handle arrays where each value can appear only once.
SPONSORED ViRE offers discoverable way of working with regex. It provides really readable regex experience, code complete & cheat sheet, unit tests, powerful replace system, step-by-step search & replace, regex visual scheme, regex history & playground. ViRE is available on Mac & iPad.
Available from iOS 7.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Link copied to your pasteboard.