What was your moment where a little thing just popped up and bit you on the toe?

Too many to even scratch the surface :), but one comes to mind...

When I first started with Perl, I would get the base part of a filename with: 

my $iam = `basename $0`;
chomp $iam;

[download]

Which is silly, of course.  Why go to the shell when you've got Perl?

For a long while I then used something I thought much more clever: 

(my $iam = $0) =~ s,.*/,,;

[download]
Even as I type it now, my fingers still remember it from so much usage.  It worked great, but only in Linux.

I finally started learning more about the available core modules, and now I know the way to go is: 

use File::Basename;

my $iam = basename $0;

[download]

As an aside to your meditation, if you're in Windows, you should be able to type just "filename" (without the .pl extension).  If it doesn't work, you may have to edit your "Advanced system settings" (under System in the Control Panel), and add ";.PL" to the end of the PATHEXT variable in your "System Variables" list.

s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

In reply to Re: It's the little things... by liverpole
in thread It's the little things... by Lady_Aleena

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.