If the initial value in your config hash contains any word character (alpha, numeric, or underscore), then the first branch will be taken, and nothing will happen.

And, of course, the obligatory cleaned up code: 

($level, $computer, $iod, $comment, $min_value, $min_time, $max_value,
+ $max_time)=
 /^\s*(\d),(\w+),([\d\.]+),([^,]+),([^,]+),(\d+:\d+),([^,]+),(\d+:\d+)
+,.*$/
   or exit_error("Cannot parse log file");
$clip=CONFIG{$computer}{iod}{$iod}{value};
if ($min_value<$clip) {
  $min_value=$clip;
  $min_time="$hour:$min";
} elsif ($max_value>$clip) {
  $max_value=$clip;
  $max_time="$hour:$min";
}
print LOG (join ',', $level, $computer, $iod, $comment,$ min_value, $m
+in_time, $max_value, $max_time, $clip, "$hour:$min"), "\n";

[download]

(Or you could possibly use split on the input line...)

Update: Whoops! I thought that logic was odd: I've inadvertantly reversed the sense of the tests. Its hould be $clip<$min_value and $clip>$max_value of course.

In reply to Re: When is not necessarily by tommyw
in thread When is not necessarily by melguin

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.