No--it looks like I must have added the | immediately prior to the initial posting. I've taken out the $fh from the code, so it now reads:

my @files = <*.htm>;
foreach $file (@files) {
    open($file or die "can not open .txt file: $!") ;
    while(<$file>) {
    my $dom = Mojo::DOM->new(<$file>);    
    my $text = $dom->all_text();
        for (split/\s+/, $text) {
            push @sequence, $_ ;
            if (@sequence >=10) {
            shift @sequence until @sequence ==10 ;
            ++$sequences{"@sequence"};
            }
        }
    }
}
close($file) ;

[download]

This specification is what generates the "Can't use string..." error I cited.

In reply to Re^6: Use of uninitialized value in string eq by Anonymous Monk
in thread Use of uninitialized value in string eq by Anonymous Monk

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.