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omochimetaru 8/25/2017 9:46 AM
https://developer.apple.com/documentation/swift/unsafemutablepointer/2428492-withmemoryrebound
9:46 AM
介さないでいけますよ
9:47 AM
let uint64Pointer: UnsafeMutablePointer<UInt64> = fetchValue() let isNegative = uint64Pointer.withMemoryRebound(to: Int64.self) { ptr in return ptr.pointee < 0 } (edited)