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
SPONSORED Would you describe yourself as knowledgeable, but struggling when you have to come up with your own code? Fernando Olivares has a new book containing iOS rules you can immediately apply to your coding habits to see dramatic improvements, while also teaching applied programming fundamentals seen in refactored code from published apps.
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.
