"I've been told that comments should amount for the half of your code"...

There's a style of programming where you make "executable comments" that also raise errors when something that should be true isn't: assertions in perl5.9.0. 

# Take the square root of a number.
    sub my_sqrt {
        my($num) = shift;

        # the square root of a negative number is imaginary.
        assert($num >= 0);

        return sqrt $num;
    }

[download]
The above is from Schwern's Carp::Assert. I think there are a number of other modules that do this as well, and I'm not sure which is best, because I only started experimenting with assertions myself recently. But it might be something to learn about if you are spending a lot of time meditating about commenting and error checking.

In reply to Re: Error handling - how much/where/how? by tphyahoo
in thread Error handling - how much/where/how? by Eyck

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.