• Original proposal: https://github.com/apple/swift-evolution/pull/114
• Latest email: https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20171106/040950.html
• Reply: https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20171106/040951.html
• Jordan Rose on over-abstraction: http://belkadan.com/blog/2017/09/Over-abstraction/

Leave a review on iTunes and join http://spectrum.chat/specfm/swift-unwrapped