What are the changes in Swift 2.0?
Swift version: 5.2
Swift 2.0 introduced a lot of major language changes. You can read my full article explaining the changes with code examples by clicking here, but here are the highlights:
- Checked exceptions using
try/catch - Automatically synthesized headers
- The
guardkeyword to check input while unwrapping optionals - Measuring strings is now done using
characters.count(Note: this was later un-done in Swift 4.) - Delayed code execution using the
deferkeyword - You now get mutability warnings if you declare variables that never get changed
- API availability checking is now built right in
- The
performSelector()family of functions is now available
Sponsor Hacking with Swift and reach the world's largest Swift community!
Available from iOS 7.0
Similar solutions…
- How to install a beta version of Swift
- How to fix “argument of #selector refers to instance method that is not exposed to Objective-C”
- How to handle unknown properties and methods using @dynamicMemberLookup
- How to create a project using Swift Package Manager
- What’s in the basic template?
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
