Solved

require and my

Posted on 1998-08-31
11
169 Views
Last Modified: 2010-03-05
I need a hash with hard-coded values in a 'shared' file. Other files would use the hash in the shared file. However, in the example below %hash from the shared file isn't recognized. What do I need to do to make it work?

********************** a.pl *****************************
use strict;
my (%hash);
require "b.pl";
print %hash;
 
********************** shared.pl **************************
sub gethash {
  %hash = ("number" => 123);
}
1;
0
Comment
Question by:Pakman
  • 5
  • 4
  • 2
11 Comments
 

Author Comment

by:Pakman
ID: 1204617
Woops! Forgot to add this line after the require statement:

gethash();

Problem still holds.
0
 
LVL 84

Expert Comment

by:ozo
ID: 1204618
#my (%hash);
use vars qw(%hash);
0
 
LVL 84

Expert Comment

by:ozo
ID: 1204619
#or
use strict;
my (%hash);
require "b.pl";
%hash=gethash();
print %hash;
0
Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

 

Author Comment

by:Pakman
ID: 1204620
Okay thanks.
0
 
LVL 5

Expert Comment

by:b2pi
ID: 1204621
In a little bit more modern fashion:

File B.pm (included among many)

package B;
use Exporter;
@ISA = qw(Exporter);
@EXPORT_OK = qw(%hash);

%hash = (
      hashval1 => 1,
      hashval2 => 2,
      hashval3 => 3,
      hashval4 => 4,
     );

1;
## End of file B.pm

File A.pl
#!/usr/local/bin/perl -w

use B qw(%hash);

print "Got third element as $hash{hashval3}\n";
## End of file a.pl

0
 

Author Comment

by:Pakman
ID: 1204622
Okay okay now how do I get this question to become locked so that I can grade it?
0
 
LVL 5

Expert Comment

by:b2pi
ID: 1204623
Ask ozo to submit his idea as an answer, then grade it when he does so.
0
 

Author Comment

by:Pakman
ID: 1204624
Ozo submit your idea as an answer.
0
 
LVL 84

Expert Comment

by:ozo
ID: 1204625
Which one?
You might also consider b2pi's suggestion as a more long term solution.
0
 

Author Comment

by:Pakman
ID: 1204626
This one:

Comment
      From: ozo
                                                        Date: Monday, August 31 1998 - 10:17AM PDT

      #my (%hash);
      use vars qw(%hash);
0
 
LVL 84

Accepted Solution

by:
ozo earned 150 total points
ID: 1204627
#my (%hash);
use vars qw(%hash);

#although I like %hash=gethash(); better:-)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

There are many situations when we need to display the data in sorted order. For example: Student details by name or by rank or by total marks etc. If you are working on data driven based projects then you will use sorting techniques very frequently.…
In the distant past (last year) I hacked together a little toy that would allow a couple of Manager types to query, preview, and extract data from a number of MongoDB instances, to their tool of choice: Excel (http://dilbert.com/strips/comic/2007-08…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

820 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question