# specify twig_handlers (see the XML::Twig documentation)
twig_handlers => 
   { # create a new hash-ref
       map { # transform a list into a new list 
             # create a name / subroutine pair
             $_ => sub {
                # when the subroutine is called
                # get the element name from $_->name()
                # and increase it's count entry in %found
                #
                # note: $_ is set by XML::Twig when the sub is called
                $found{$_->name()}++ 
             }; 
       } @nodes # for each element in @nodes
   }

[download]

See also map.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re^3: XML::Twig - How do I check to see if an element exists in root? by Joost
in thread XML::Twig - How do I check to see if an element exists in root? by dbmathis

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.