My first module

[rvBasic]

Having written some general subs, I thought it useful to put them in a module myUtil.pm. It was structured as follows:

use strict;
sub AAA {xxx;}
sub BBB {yyy;}

The module was put in the same library as the following main (rvBasic.pl)program:

use qw(AAA);
$zz=&AAA($a1,$a2);

The program aborted with the following messages
myUtil.pm did not return a true value at rvBasic.pl line 2
BEGIN failed compilation - aborted rvBasic.pl at line 2
After some trial and error, I modified the module as follows:

use strict;
return(1);
sub AAA {xxx;}
sub BBB {yyy;}

And everything worked smooth.

So, I should be happy. But I don't really understand why it works now. I read in the documentation the use is used at "compile" time, but obviously it does some execution as it asked for a true value?

Can somebody clarify this?


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In theory, there is no difference between theory and practice. In practice, there is. [attributed to Yogi Berra]

 

[feherke]

Hi

1; # don't forget to return a true value from the file

Do you have it ?

Feherke.

http://rootshell.be/~feherke/