in reply to Re^3: Massive expansion of a hash of arrays?
in thread Massive expansion of a hash of arrays?

Thank you so much for taking the time to explain this code. There was a lot in there that i couldn't get my head around, so your explanation is very much appreciated. I'm actually now using the code so it's good that i now know how it works!!

A final point, i tried to move the subroutine definition below the code calling it (I like to keep all my subs at the bottom), but i get an error:

Can't call method "nForX" without a package or object reference at ./test.pl line 617.

Is there a reason for this? And how do i store the sub somewhere else?

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Re^5: Massive expansion of a hash of arrays?
by farang (Chaplain) on Jul 20, 2014 at 23:32 UTC

    A final point, i tried to move the subroutine definition below the code calling it (I like to keep all my subs at the bottom), but i get an error: Can't call method "nForX" without a package or object reference at ./test.pl line 617.
    It seems you'll need to add a forward declaration with the prototype in order to move the sub definition below the calling code.

    sub nForX(&@);
...
nForX {
    print join ' ', @_;
} 3, \( @a, @b, @c );
...
sub nForX(&@) { #use of prototype here is actually irrelevant 
                #now, i.e. sub nForX {...} works the same
... }

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[d/l]

      Ok, Thanks!!

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