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Re^4: create a matrix for print 0 or 1 from pairingby jakobi (Pilgrim) |
on Oct 29, 2009 at 09:48 UTC ( [id://803917]=note: print w/replies, xml ) | Need Help?? |
change lines 5+6 to my %A; my @order=qw/horse lion mule tiger/; Keywords to check are: soft references and auto-vivification: your strings 'a' to 'd' can be abused as soft references, which happens without use strict. With use strict however, you need a real hash-ref in the elements of %A instead - see perlreftut for more on references and soft references. Or omit the initialization of your hash-of-hashes %A to autovivify any undef values automagically as required (Autovivify definition or again: perlreftut). and for your aligning your table layout, consider something like sprintf "%5s", $stringvariable
cu & HTH, Peter -- hints may be untested unless stated otherwise; use with caution & understanding.
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