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Re^3: How can you check to see if a file handle is already open?

by mifflin (Curate)
on Jan 16, 2008 at 19:58 UTC ( #662748=note: print w/ replies, xml ) Need Help??


in reply to Re^2: How can you check to see if a file handle is already open?
in thread How can you check to see if a file handle is already open?

Why not just use the IO::Handle package?

Use the opened method. It will tell you if a file handle is opened and ready.

try the following code...

use strict; use warnings; use IO::Handle; open my $fh, '>', 'file' or die $!; test_fh($fh); close $fh or die $!; test_fh($fh); sub test_fh { my ($fh) = @_; if ($fh->opened()) { print "fh is opened and ready\n"; } else { print "fh is closed\n"; } return; }


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