NEW: Learn to build the incredible iOS 15 Weather app today! >>

Checking sequence elements match a condition

Available from Swift 4.2

Paul Hudson      @twostraws

SE-0207 provides a new allSatisfy() method that checks whether all items in a sequence pass a condition.

For example, if we had an array of exam results like this:

let scores = [85, 88, 95, 92]

We could decide whether a student passed their course by checking whether all their exam results were 85 or higher:

let passed = scores.allSatisfy { $0 >= 85 }
Hacking with Swift is sponsored by Essential Developer

SPONSORED Learn the most up-to-date techniques and strategies for testing new and legacy Swift code in this free practical course for iOS devs who want to become complete Senior iOS Developers.

Learn more

Sponsor Hacking with Swift and reach the world's largest Swift community!

Other changes in Swift 4.2…

Download all Swift 4.2 changes as a playground Link to Swift 4.2 changes

Browse changes in all Swift versions

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.