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 }
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Other changes in Swift 4.2…
- Derived collections of enum cases
- Warning and error diagnostic directives
- Dynamic member look up
- Enhanced conditional conformances
- Random number generation and shuffling
- Simpler, more secure hashing
- In-place collection element removal
- Boolean toggling
Download all Swift 4.2 changes as a playground Link to Swift 4.2 changes
