(Try answering the question vs. saying it can't be done! Grrr.)

As use is a compile-time statement, you will need to use eval to do this at run-time. 

foreach (<THRESHOLDS>) {
 chomp($_);
 if (my ($name, $value) = $_ =~/^(\w+);(\d+);$/ && $_ !~/^\#/) {
  eval "use constant $name => $value;";
  log_msg("Setting: use constant $name => $value;");
  if ($Threslabels[$Threscount] ne $name) {
   log_msg("There is something wrong with the thresholds labels, check
+ threshold
+s file!");
   exit(2);
  }
 $Threscount++;
 }
}

[download]

Also, note that I changed your use of $1 and $2 by assigning them to normal variables. This is a safety as well as documentation thing.

Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.

In reply to Re: Define constant in loop by dragonchild
in thread Define constant in loop by penantes

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