switchはhashValueを見てるのか？ #CodePiece

CodePiece.swift

enum Fruit {
    case peach
    case apple
    case grape

}

var i = 3
var emptyEnumPtr = withUnsafePointer(to: &i) { UnsafeRawPointer($0) }
                .bindMemory(to: Fruit.self, capacity: MemoryLayout<Fruit>.size)
print(emptyEnumPtr.pointee) // 空
print(emptyEnumPtr.pointee.hashValue) // 0

switch emptyEnumPtr.pointee {
case .peach: print("peach") // peach
case .apple: print("apple")
case .grape: print("grape")
default: print("default")
}