Sequentially-named variables are almost always a sign of bad design.
Consider describing $calc3 by itself. What does the name mean? If in describing the variable in human terms, you mention "third" anywhere in the description, then the variable almost certainly should have been the third element of an array.
If it's the "third" of something, you're very likely to want to perform operations on the "first", "second", "third", and so on of that category (as you discovered). And the easiest way
to do that is with an array.
Just because Perl can frequently go behind the scenes and help you discover "all variables named as $calcnnn" doesn't mean that you should contemplate your navel in every single program. Too much introspection leads to fragile programs, and in that case, be very careful how much information you put about your authorship, because your maintenance programmer will hunt you down and kill you.
-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link
or How to display code and escape characters
are good places to start.