The review of SE-0014 "Constraining `AnySequence.init`" ran from December 18–21, 2015. The proposal has been accepted for Swift 2.2.
swift-evolution/0014-constrained-AnySequence.md at master · apple/swift-evolution · GitHub
Thank you to everyone who participated in the review process! We welcome an implementation of this proposal, which is tracked by
[SR-474] Implement SE-0014: Constraining AnySequence.init · Issue #43091 · apple/swift · GitHub
- Doug