Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Module definition problem

Posted on 2002-07-20
2
Medium Priority
?
237 Views
Last Modified: 2010-03-05
I'm trying to define a module:

package Foo;

use strict;

require Exporter;

our @ISA = qw(Exporter);
our @EXPORT = qw(bar);
our $VERSION = "1.0";

sub bar() {
    my $val = shift;

    print $val;
}

1;

However when I try to use the bar function as follows:

use strict;

use lib 'E:/Programming/Perl/libs';
use Foo;

bar("Test");

I get the following error:

Too many arguments for Foo::bar at test.pl line 6, near ""Test")"
Execution of test.pl aborted due to compilation errors.

What's going on here?
0
Comment
Question by:derekl
2 Comments
 
LVL 85

Accepted Solution

by:
ozo earned 400 total points
ID: 7167243
You used the prototype bar() which means that bar has no arguments.
You probably wanted either

sub bar($) {
    my $val = shift;
    print $val;
}

or

sub bar {
    my $val = shift;
    print $val;
}
0
 

Author Comment

by:derekl
ID: 7167261
Thank I would have stared at that for 4 or 5 more hours before picking it up.
0

Featured Post

Important Lessons on Recovering from Petya

In their most recent webinar, Skyport Systems explores ways to isolate and protect critical databases to keep the core of your company safe from harm.

Question has a verified solution.

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

Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
Email validation in proper way is  very important validation required in any web pages. This code is self explainable except that Regular Expression which I used for pattern matching. I originally published as a thread on my website : http://www…
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…
Six Sigma Control Plans

927 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