Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!usc!ucsd!ucbvax!agate!shelby!daemon
From: shiffman@sumex-aim.stanford.edu (Smadar Shiffman)
Newsgroups: comp.sys.next
Subject: re: Question about Objective-C's @selector
Message-ID: <2215@shelby.Stanford.EDU>
Date: 17 Jul 90 16:54:06 GMT
Sender: daemon@shelby.Stanford.EDU
Lines: 23


In article <26a20030.3d07@petunia.CalPoly.EDU> mdeale@vega.acs.calpoly.edu
(Myron Deale) writes:
>I have something like
>
>[listObject makeObjectsPerform:(SEL)aSelector with:anObject];
>
>but can "aSelector" only be a constant?
>
>I have a radio button matrix that inputs a choice between a number of
>different methods. I would like to set some kind of pointer (ala C's
>pointer to function), based upon the radio button input, though
>aSelector would have to be a variable rather than a constant literal.

You could use
[listObject makeObjectsPerform:sel_getUid(radioButtonInput) with:anObject];

where the Objective-C run-time function sel_getUid(radioButtonInput) converts
the string radioButtonInput to a selector at run time.

Hope this helps,
	Smadar
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