The proper Swift operator isis:
if touch.view is UIPickerView {
// touch.view is of type UIPickerView
}
Of course, if you also need to assign the view to a new constant, then theif let ... as? ...syntax is your boy, as Kevin mentioned. But if you don't need the value and only need to check the type, then you should use the is operator.
The proper Swift operator isis: if touch.view is UIPicker...
AppDelegate.swift if(resp.isKindOfClass(PayResp)){ if(res...
swift中的is的功能相当于OC中的isKindOfClass，但它只能判断的类型必须是一个确定的类型，如果是不...
isKindOfClass和isMemberOfClass的区别 isKindOfClass ：Returns a...
1.isKindOfClass[subClassObj isKindOfClass:superClass]; 返回...
面试题iskindOfClass & isMemberOfClass的理解 下面是关于iskindOfClass ...
开篇我们知道有 - (BOOL)isKindOfClass 、+(BOOL)isKindOfClass、-(BOO...
1.isMemberOfClass 和 isKindOfClass 联系与区别 isKindOfClass 用于确...
-(BOOL)isKindOfClass用来判断某个对象是否属于某个类，或者是属于某个派生类。 -(BOOL)is...
isMemberOfClass ：测试类中的直接成员关系 isKindOfClass：检测继承层次中的关系 res...
本文标题：swift中的 isKindofClass
本文链接：https://www.haomeiwen.com/subject/xtscgxtx.html
网友评论