On Wednesday 05 May 2010 17:20:25 Akhthar Parvez K wrote:
> On Wednesday 05 May 2010, Shlomi Fish wrote:
> > 2. Don't use bareword filehandles - use lexical ones:
> >
> > open(my $output, ">>", $output) or die "Could not append to output - $!";
>
> Wouldn't there be any issues if we use same name for lexical filehandle and
> the scalar variable. Is Perl too intelligent to recognize both of them?
There certainly would be, and I don't think Perl is that intelligent to
multiplex between the two uses of the same variable. I overlooked this double
use of a variable with the same name ("$output").
So use $output_filename and $output_fh or something.
If you want to see some Evil low-level hackery that causes one variable to
masquerade as two in different contexts, see dualvar from Scalar::Util:
http://perldoc.perl.org/Scalar/Util.html
I think I've learned about it in the O'Reilly book "Perl Hacks" (which I can
recommend). (Please don't use dualvar in production code - it's a very bad
idea.).
Regards,
Shlomi Fish
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