I don't know if this is up to the level of some of the other code here, but sometimes, when I want to verify the contents of a few variables (here $var1, @var2, and %var3, for example purposes), I will toss the following into the code: 

if (1) { 
    use Data::Dumper; 
    local($| = 1); 
    print Data::Dumper->Dump([\$var1, \@var2, \%var3], 
      [qw(*variable1 *variable2 *variable3)]), "\n"; 
}

[download]

I can then go back and change it to if (0) to turn it off (and leave it there if I expect to need to look at the content of the variables at some point in the future), or remove it entirely once I'm finished.

Don't know if it helps anyone else, but it has proven helpful to me in the past. (And my heartfelt thanks to the monks who led me to using it, after I first started visiting.)

In reply to Re: Common Perl Idioms by atcroft
in thread Common Perl Idioms by eric256

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.