https://github.com/frogcjn/swift-evolution/blob/master/proposals/xxxx-union-type.md <https://github.com/frogcjn/swift-evolution/blob/master/proposals/xxxx-union-type.md>
Hi, I'm now officially proposal the union type feature for Swift. Please see: https://github.com/apple/swift/commit/eb7311de065df7ea332cdde8782cb44f9f4a5121 <https://github.com/apple/swift/commit/eb7311de065df7ea332cdde8782cb44f9f4a5121> Introduction Add union type grammar, represents the type which is one of other types. var stringOrURL: String | URL = "https://www.apple.com"; I would be thankful if someone support this idea and give some advice. Thanks! -- Jiannan
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