Hi all@perlmonks!

Is it possible to "share" a variable in subroutines? I have a subroutine, in which I declare an array.
This array should be only "visible" inside this subroutine *and* all other subroutines which are called from inside that specific subroutine:

sub callme ($) {
   my $i = $_[0];
   $array[$i] = "printme-";
}

sub specific {
   my @array = [0, 1, 2, 3, 4, 5];

   for (my $i=0; $i<6; $i++) {
      &callme($i);
   }
   print @array;
}

[download]

The print-statement should print:
printme-printme-printme-printme-printme-printme-.
Is this possible? Putting sub callme() inside of sub specific() gives a warning stating to use an anonymous subroutine, but how do I call it from within sub specific() if it's anonymous?
I want to avoid copying around eventually quite large segments of memory when referencing and derefencing that array when passing as \@array to the called subroutine.
btw: the called subroutine does more to the array-element than just setting a new value, so it's recommended to use a subroutine here and not to put the code inside sub specific(). ;-)

Thanx in advance!
Micha

In reply to Sharing a variable between subroutines by professa

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