Greetings most wise and helpful monks!

For whatever reason, this problem keeps cropping up, so I'm hoping someone can shed some light on the problem so I can eliminate it once and for all.

This code works: 

while (<>)
{
  if (!/^#+/)
  {
    ($source, $destination, $bytes) = split;
    $net_activity{$source}{$destination} += $bytes;
  }# ignore comments
}# read in each line of the net log

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This code does not: 
my($one_line) = '';
while ($one_line = <>)
{
  if ($one_line =~ !/^#+/)
  {
    ($source, $destination, $bytes) = split(/ /, $one_line);
    $net_activity{$source}{$destination} += $bytes;
  }# ignore comments

}# read in each line of the net log

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I get lots of these: 
Use of uninitialized value in pattern match (m//) at ./net_traffic2 li
+ne 14, <> line 5.

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The program still WORKS (i.e. does what it's supposed to do), but it throws up all those warnings first.

I know I'm doing something Very Dumb(TM) here, but if someone could point it out I'd be extremely grateful. I want to understand this whole "unitialized variable" thing because it keeps coming up even when I think I've initialized the variable. Apparently Perl and I have different ideas of what that means, so I want to get in line.

Many thanks!

C_T

Charles Thomas
Madison, WI

In reply to Help with recurring "uninitialized variable" problem. by C_T

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