Dear Monks,

I have this snippet (credit Aighearach) that try to open files under subdirectory 'mysubdir'
and then stored them into a hash with filename as key and its content as values.
#!/usr/bin/perl -w use Data::Dumper; use strict; my $mydir = 'mysubdir\*'; my @filear = glob($mydir); my %hash = make_hash(@filear); sub make_hash { (local $/)=undef; my (@files,%hash); @files = @_; foreach my $file ( @files ) { open( my $fh, $file ) or next; $hash{$file} = <$file>; # This line gives "unopened filehandle wa +rning" }; return %hash; } print Dumper \%hash;
However, instead of giving the file contents as its values, it gives "undef" instead, like this.
$VAR1 = { 'mysubdir\\file1.txt' => undef, 'mysubdir\\file2.txt' => undef };
Please advice what's wrong with my code above.
Regards,
Edward

In reply to Unopened Filehandle Problem by monkfan

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.