我想知道我稍后初始化的AnyObject变量的类型是什么.
例如:
例如:
var test: AnyObject test = 12.2
我无法弄清楚如何做到这一点.
您可以使用is运算符执行此操作.
示例代码:
示例代码:
var test: AnyObject test = 12.2 if test is Double { println("Double type") } else if test is Int { println("Int type") } else if test is Float { println("Float type") } else { println("Unkown type") }
根据Apple文档:
Checking Type
Use the type check operator (is) to check whether an instance is of a certain subclass type. The type check operator returns true if the instance is of that subclass type and false if it is not.