Swift: 删除子View

删除一个view 下的所有子view

extension UIView {

   func clearAll(){

       ifself.subviews.count >0 {

            self.subviews.forEach({ $0.removeFromSuperview()});

            // xcode7会提示 Result of call to map is unused

           //self.subviews.map { $0.removeFromSuperview()};

        }

    }

}