The first pass gathers the filenames in %file. The second pass handles the files suffix per suffix if an handler of the form handle_XXX is defined for the suffix XXX. Note that you can add new handlers without touching the logic. 
#! /usr/bin/perl 
use strict;
my %file;  # hash of filenames arrays keyed by suffix

# first pass
for (<*>) {
    push @{$file{$2}}, $_  if /(.*\.(.*))/;
}

# second pass
for my $suffix (sort keys %file) {
    no strict 'refs';
    next unless defined &{"handle_$suffix"};
    &{"handle_$suffix"}($_) for   sort @{$file{$suffix}} 
      
}

# process the file with suffix '.cpp'
sub handle_cpp {
    print "$_[0]\n";
}

[download]

-- stefp

In reply to Re: Best way to match items in an array by stefp
in thread Best way to match items in an array by ibanix

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.