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From: worley@compass.com (Dale Worley)
Newsgroups: comp.lang.perl
Subject: Recursive use of iterators
Message-ID: <1991Apr3.233616.11680@uvaarpa.Virginia.EDU>
Date: 3 Apr 91 23:36:16 GMT
Sender: mmdf@uvaarpa.Virginia.EDU (Uvaarpa Mail System)
Reply-To: worley@compass.com
Organization: The Internet
Lines: 25

I was writing a recursive function that contained a foreach statement,
so I made sure to localize the array it was iterating over:

	local(@dependencies) = ...;
	foreach (@dependencies) {...}

Somewhat to my surprise, the recursive execution of the loop
interfered with the proper operation of the outer execution.  I found
that I have to localize the symbol table entry (if that's how you say
it):

	local(*dependencies);
	@dependencies = ...;
	foreach (@dependencies) {...}

This is probably not a bug, but it led me to wonder how you deal with
recursive loops like:

	foreach $i ($a .. $b) {...}

Dale

Dale Worley		Compass, Inc.			worley@compass.com
--
And then there is the scientific problem known as "Schroedinger's pussy"...