The whole thing about my variables is a bit difficult to get your head around. Advanced Perl Programming does a wonderful job of explaining it. This is some of the wisdom I think I have gained on the subject...not 100% sure of course....

Basically, a my variable is a lexical varaible. It has nothing to do with packages, so forget about that. Think in terms of lexical scope. A file is a lexical scope. A block is a lexical scope( whatever is inside a pair of { } ). A package is _not_ a lexical scope. It just seems that way, because everyone usually puts one and only one package in a file, basically creating a lexical scope for that package.

So, for your specific example, put my $image inside sub one, and you are game. If you want it to persist each time you call one, do it like this: 

Package Pack;
{ 
 my $image;
  sub one
  {
  ($image)=@_;
  }
}
  sub two
  {
  print $image;
  }

[download]
Notice the extra set of braces. We have just created a scope for $image, so that one can see it, but two can't. Hope this clears things up a bit, goldclaw

In reply to Re: Instance Module by goldclaw
in thread Instance Module by Anonymous Monk

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