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:
guardkeyword to check input while unwrapping optionals
characters.count(Note: this was later un-done in Swift 4.)
performSelector()family of functions is now available
Available from iOS 7.0
Did this solution work for you? Please pass it on!
Other people are reading…
About the Swift Knowledge Base
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.
Need to know Objective-C fast?
I wrote a book dedicated to teaching Objective-C to developers who already know Swift – it's the fastest way to get up to speed!