Hello again: Sorry to reply to my own message, but I know a little more now and could still use some clarification.
Perl's $! variable is being set by a call to close(), I'm 99% sure. However, this call to close() does not return undef, it succeeds. The call is being made on a non blocking IO::Socket object. Calling the object oriented opened() on the line before, does say it's a valid handle. I'm using Perl 5.6.0 on Mac OS X. My code does not appear to malfunction in any way. Now according to Programming Perl, "...you shouldn't depend on the value of $! to be anything particular unless you've gotten a specific error return indicating a system error." Does this basically mean that I can ignore this phantom error? The error eventually goes (checking it in the main event loop), does this mean that another system call is resetting $! when it succeeds? It does appear to come back when I close() another socket. Basically any light you can shed on how the mysterious $! works is greatly appreciated here. I feel like I'm chasing ghosts. Thanks again for your time. James P.S. It's been brought to my attention that my project isn't very "Beginners" oriented. I'm aware of this, but I had hoped the questions were generic enough to be known, especially the debugger question. Well, that and I have yet to find the [EMAIL PROTECTED] list. <wink> On Sunday, October 13, 2002, at 09:50 PM, James Edward Gray II wrote: > So, here's my main question. What's the best way to to track down the > line that is setting the $! variable? I can't quite figure out the > rules of this guy. Once it's set, what clears it? Its it localized > to subroutines or packages or anything? I mean, if I'm printing this > error out in once place, could it be happening in a far off chunk of > code? (I don't believe it's the select() complaining, but I'm not > totally sure.) I've tried to use 'b CONDITION' in the debugger to > track it down, but I can't figure out how to write the CONDITION. It > always thinks I mean a subroutine. Any help here? Basically, any and > all tips on the $! variable are needed. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
