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omochimetaru 10/25/2017 2:40 AM
https://github.com/apple/swift-evolution/blob/master/commonly_proposed.md
apple/swift-evolution
swift-evolution - This maintains proposals for changes and user-visible enhancements to the Swift Programming Language.
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2:41 AM
よくあるリジェクト
Use pattern-matching in if let instead of optional-unwrapping:
2:41 AM
これ該当してるかな if letの話
2:42 AM
Optional implicitly promotion の話はここには乗ってないっぽそう