Path: utzoo!censor!geac!torsqnt!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!usenet.ins.cwru.edu!ncoast!allbery
From: allbery@NCoast.ORG (Brandon S. Allbery KB8JRR)
Newsgroups: comp.lang.perl
Subject: Re: defined keys that aren't defined
Message-ID: <1990Dec18.234658.4197@NCoast.ORG>
Date: 18 Dec 90 23:46:58 GMT
References: <111562@convex.convex.com>
Reply-To: allbery@ncoast.ORG.ORG (Brandon S. Allbery KB8JRR)
Followup-To: comp.lang.perl
Organization: North Coast Computer Resources (ncoast)
Lines: 21

As quoted from <111562@convex.convex.com> by tchrist@convex.com (Tom Christiansen):
+---------------
|     @x{'a'..'g'} = ();
|     print("keys are: ", join(", ", sort keys %x), "\n");
|     print((defined $x{'c'}) ? "defined" : "not defined", "\n");
| 
| This prints "not defined".  Keys claims that there's a "c" element, 
| but defined says otherwise.  This seems inconsistent.  I'm still 
| looking for a useful application of this phenomenon.
+---------------

Symbol tables.  You've seen symbol "c", but you don't know what its value is
yet.  (Come to think of it, isn't this used in the current implementation of
packages?)

++Brandon
-- 
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