Brethren,
In a learning experiment using multiple filehandles in a hash, I stumbled on something that I don't understand.

#/usr/bin/perl -w use strict; local (*E,*F,*G); my $string = <<JUNK; I will print unless I perish JUNK my %rh = (E=> *E, F=> *F, G=> *G); open $rh{$_}, ">test_$_.txt" or die $! for keys %rh; print { $rh{$_}} $_.$string for keys %rh;
# the following (incorrect) line closes the filehandles
close $_ or die $!                        for keys %rh; # so that this (correct) line dies
close $rh{$_} or die $! for keys %rh; #error: # Bad file descriptor at C:\Perl\scripts\test5.pl line 20.

Note that strict is being used.
Why is $_, above, allowed to be used as a Filehandle? In the other contexts, open() or print (), the script would have failed with appropriate messages that 'String ('F') can't be used ..' etc.

So, close() doesn't expect the same strictness that open() does. Is that as it ought to be?
(ActiveState perl 5.6.1)
mkmcconn


In reply to unexpected close() success on (non-) filehandle by mkmcconn

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.