objective-c - Create method for NSString

Question

I want to create a method in Obj C taking a NSString and checking if the string is capitalized. Where do I declare it, another .m file?

Answer 1

您可以在将使用该方法的文件中为它创建一个类别，如果有很多类将使用它，则可以在另一个新文件中创建一个类别。

@interface NSString (Capitalized)
-(BOOL)isCapitalized;
@end