swift - 使用未声明的类型错误 : How to compare object with class type?

Question

如何比较 object 与 AnyClass 泛型:

我想比较一个对象和类的类型，类名应该作为参数传递。

func checkGeneric(className: AnyClass) {
    let object = UIViewController()
    if (object is className) { // Use of undeclared type `className`
        print(className)
    }
}

checkGeneric(className: UIViewController.self)

Answer 1

您可以使用type(of:) 获取object 的类型并将其与AnyClass 进行比较。试试这个..

func checkGeneric(className: AnyClass) {
    let object = UIViewController()
    if (type(of: object) == className) { // Use of undeclared type class name
        print(className)
    }
}