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mattcleary2
19,953 PointsThe function signature does not match the one accepted by the handler parameter?
Hey guys, can you please explain this question to me?
A UIAlertAction instance can be initialized with a "handler" - a function that executes code when the action is started. Why does the following function not work as a handler:
func doSomething(sender: UIStepper) {}
Why does the function signature not match the one accepted by the handler parameter? What IS a signature? and how do they work?
Thank you so much
2 Answers
akin
Courses Plus Student 2,865 PointsHi Matt ;
Method signature is complete method statement like this in C# --> public void MyMethod ( int parameter) Method signature consists of method's return value (in my example, it is void) and method parameters if there are... In your programming language, handler class or its method must be defined somewhere and your method signature can match with handler's method signature (method's return value and method parameters) If you not match this you can get error message
mattcleary2
19,953 PointsThank you!