You may now place multiple if let bindings on a single line separated by a comma, rather than embed them in increasingly indented pyramids.
For example, previously you would write code like this:
if let user = loadUsername() {
if let password = decryptPassword() {
authenticate(user, password)
}
}As of Swift 1.2 you can write this:
if let user = loadUsername(), let password = decryptPassword() {
authenticate(user, password)
}
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Other changes in Swift 1.2…
- The zip() function joins two sequences
- The flatMap() method transforms optionals and arrays
- Closures can now be marked @noescape
- Classes can now have static methods and properties
- Constants no longer require immediate initialization
- A new Set data structure
- Implicit bridging has been reduced
- Typecasting now includes as!
Download all Swift 1.2 changes as a playground Link to Swift 1.2 changes
