first post

Hi, My first newbie post. I wish to have two arrays indexed by a hash
table. The simple program below runs and behaves properly initializing the
hash table with the information I wish it to have.

However, Perl generates the following suggestion on the @header{}
assignment statements,

"Scalar value @header{"keys"} better written as $header{"keys"} at
iifm.pl line..."

If I rewrite it as Perl suggests, the two %header{} elements get
initialized to the size of the arrays instead of the arrays. Why does Perl
make this suggestion, and how do I get rid of it without getting rid of
the "use warnings" statement?

Thanks, --H



use strict;
use warnings;
my %header;

open( IN, "<", $ARGV[0] );

@header{"keys"} = split(/\t\n/, );
@header{"info"} = split(/\t\n/, );



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Re: first post

On 11-07-20 10:28 PM, H Kern wrote:
> use strict;
> use warnings;
> my %header;
>
> open( IN, "<", $ARGV[0] );
>
> @header{"keys"} = split(/\t\n/, );
> @header{"info"} = split(/\t\n/, );

I'm not sure but I think this is what you want:

( $header{"keys"}, $header{"info"} ) = split(/\t\n/, );


Also, Data::Dumper will dump the complex structures so you can see
exactly what it is. Comment it out to stop its output.

use Data::Dumper;
print Dumper \%header;

Data::Dumper is a standard module and is installed with Perl. For a
list of all the standard modules and pragmatics, see `perldoc perlmodlib`.


--
Just my 0.00000002 million dollars worth,
Shawn

Confusion is the first step of understanding.

Programming is as much about organization and communication
as it is about coding.

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