PitifulProgrammer:

If $file_name contains the string "foo_bar", then -e "$file_name.xml" checks whether "foo_bar.xml" exists, and similarly, -e "$file_name.xml.bak" checks for "foo_bar.xml.bak". I didn't use a different list for the .bak files because they're only relevant if you have the original, and I can construct the name of the backup file easily given the base file name. I stripped the .xml off the end originally, because I was expecting the backups to have a .bak extension without the .xml part. Otherwise, we could simply skip the map statement, and then use -e "$file_name" for the .xml file[1], and -e "$file_name.bak" for the second one.

[1] You don't need the quotes in the first one if you're not building a string from multiple parts, but I left 'em in for symmetry.

...roboticus

When your only tool is a hammer, all problems look like your thumb.

In reply to Re^9: comparing contents of two arrays and output differences by roboticus
in thread comparing contents of two arrays and output differences by PitifulProgrammer

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.