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Annegret Heimerzheim
3,190 Pointscall a method who's name is contained in a variable
I have a list of method names and associated parameters which the user has configured to be executed one after another. How can I call these methods? I'm coming from the Microsoft .net world. There is a 'callbyName' command to which I can pass the function name and the parameters. I think this should be possible in iOS (Swift?) as well. Does Treehouse offer a course covering this topic or can you give me a hint where to look for an answer? Thank you very much Annegret
3 Answers
Nathan F.
30,773 PointsI'm not familiar at all with call-by-name but a quick Google search turns this up, which may help?
Annegret Heimerzheim
3,190 PointsThanks, Nathan, but the link is about function parameters.
Stone Preston
42,016 Pointsin Objective C this is known as a selector. You can read about them here.
As far as implementing a selector in Swift, give this stack overflow post a read
Looks like it may be a bit different than it was in Objective C, but looking at some of the answers in that post its still easy to do in Swift
I may be wrong, but allowing a user to to provide names of methods to call and giving the user a lot of control over code like that does not sound like a very good idea to me. It might be a good idea to look into some alternative ways of achieving your goal