ah ok.. i'll read some doc again then about the local thing, but i thought it was helping me..

and eventually i rewrote the code into: 

  my ($source, $destination) = get_elements ;
  scan_matrix $mode, $source, $destination;

[download]
in the loop... where $source and $destination are references to arrays...

what amazes me about perlmonks is: jeeeez, long after this problem is solved (for me), ppl keep experience-- me. so, it's not allowed to ask beginnersquestions without being degraded in your status (i mean: okay, i made a mistake... but does EVERYBODY need to degrade my status?)? hm...
makes me think twice before i ask anything on this forum.
/me crawls back in his cave...

--
to ask a question is a moment of shame
to remain ignorant is a lifelong shame

In reply to Re^7: The weirdest problem with undef by insaniac
in thread The weirdest problem with undef by insaniac

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