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tarunon 11/1/2017 9:30 AM
https://github.com/apple/swift/blob/dd38ace506906d39913d048ff2dbae8f62dc086e/stdlib/public/runtime/SwiftValue.mm
apple/swift
swift - The Swift Programming Language
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9:30 AM
こっちのほうが良さそう
9:30 AM
というか_SwiftValueはNSObjectのサブクラスじゃん