objective c - Is assigning the same Action-method to multiple Cocoa UI objects e.g. NSButton possible? -

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i'm learning objc , cocoa programming, coming java world. test current skills , learning progress i'm creating small calculator app scratch (osx not ios).

my ui has 10 digit buttons 0-9 among others.

my first thought was, since action receives senders reference, make 1 action -(ibaction)capturedigit:(id)sender , grab digit button title. interface builder allows action connected 1 sender seems.

so ended creating 10 capturedigit actions in controller.

my question: first option possible somehow? thought of adding actions programmatically (is possible?) buttons, have add digit buttons outlets controller.

bonus question: can nsbutton hold kind of non visible value? not find in documentation. maybe violate mvc pattern ui know of application specific data?

thanks useful , kind answer in advance, i'm still learning

you can connect more more button single action. also, can use tag field of object give "behind scenes" value.


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