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Re: [vox-tech] Perl: Checking if a hash exists and is true
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Re: [vox-tech] Perl: Checking if a hash exists and is true



On Mon, Jul 09, 2001 at 07:38:41PM -0500, Jay Strauss wrote:
> strict should complain if it was a bareword, right???

Hm...  Well, I /thought/ so, although now that I've tried it, I got no
complaints at all. Strange...  I could swear it used to bug me about
that...  Oh well.  :-/

Micah

> 
> ----- Original Message -----
> From: "Micah Cowan" <micah@cowanbox.com>
> To: <vox-tech@franz.mother.com>
> Sent: Monday, July 09, 2001 7:18 PM
> Subject: Re: [vox-tech] Perl: Checking if a hash exists and is true
> 
> 
> > On Mon, Jul 09, 2001 at 05:46:54PM -0500, Jay Strauss wrote:
> > > Too bad, but as far as barewords and extra "$" go (Micah, I don't want
> to
> > > say you're wrong :-)), but a little example:
> > >
> > > [jdedev]/home/oracle/bin> cat tmp
> > > #!/opt/perl/bin/perl -w
> > >
> > > use strict;
> > >
> > > my $help = 0;
> > > my %hash = (help=>\$help);
> > > my $refHash = \%hash;
> > >
> > > print "w/o \{\}\t: $refHash->{help}\n";
> > > print "w \{\}\t: ${$refHash->{help}}\n";
> > >
> > > [jdedev]/home/oracle/bin> ./tmp
> > > w/o {}  : SCALAR(0x400493d0)
> > > w {}    : 0
> > >
> > > Jay
> >
> > Oh; sorry.  Didn't realize that the value of $refHash->{'help'} was a
> > scalar (brainfart).  Of course, you're correct with the ${}.  However,
> > the statement about the bareword still stands.
> >
> > Micah


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