Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Here's the line, explained a bit:

my $regex = join '|', map "\Q$_\E?", @filelist; ^ ^ ^ ^^ | | | || | | | |+ - Last character in file name optio +nal, i.e., the "l" in html | | | + - End quote metacharacters | | + - The default scalar aliased to each @ +filelist element | + - Begin quote metacharacters (e.g., the +period) + - Join each element with alternation ("or") charac +ter

As shown, this results in the following:

1234567_3a_20101000\.html?|99877_b_20111111\.html?|99877_c_20111111\.h +tml? ...

This line builds a regex using the file names in @filelist. When passed to File::Find::Rule as the -name rule, only those files names which match the regex will be returned by File::Find::Rule, if any.

If you want File::Find::Rule to look for a particular pattern, change the regex here:

->name(qr/^(?:$regex)$/) ^^^^^^^^^^^^

However, if you want to process the files returned by File::Find::Rule, you can do something like this:

my @matchingFileNames = grep /pattern/, @found_html;

where "pattern" represents the regex that would 'filter' the elements of @found_html.

In reply to Re^3: Search array of file names in directory structure by Kenosis
in thread Search array of file names in directory structure by Anonymous Monk

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others cooling their heels in the Monastery: (6)
    As of 2017-10-17 21:06 GMT
    Find Nodes?
      Voting Booth?
      My fridge is mostly full of:

      Results (238 votes). Check out past polls.