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From: neveu@fugitive.berkeley.edu (Charles Neveu)
Newsgroups: comp.sys.next
Subject: Null Selector (was Re: Question about Objective-C's @selector)
Summary: How do you define a null or empty SEL variable?
Keywords: SEL
Message-ID: <1990Jul18.010605.4594@agate.berkeley.edu>
Date: 18 Jul 90 01:06:05 GMT
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Sender:Charles Neveu

I have a question about SEL variables. How do you initialize a SEL variable
to have an invalid, or null, value.  That is, I have a SEL variable that I
want to initialize to a value that is invalid; some part of the program will
set the value to a valid selector; another part of the program will check 
the value to determine whether it is valid and if it is, send that message
to an object. 
So what do I initialize the variable to? 0? -1? (int) NULL?

Thanks,
Charles