Swift3.0 - 对象的标识

• 怎么获取类的标识

代码语言：javascript复制

class Student { 
}
let x = Student()
let y = x
print(ObjectIdentifier(x) == ObjectIdentifier(y))
print(x === y)
let z = Student()
print(ObjectIdentifier(x) == ObjectIdentifier(z))
print(x === z)

创建对象的时候,会给对象分配一个独一无二的标识

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