Re^3: help with simplifying program

[hdb]

Your proposal gets less combinations! I admit that using unless and != is rather confusing but it is correct. It translates into

next if $dwx == $dxy and $dxy == $dyz;

which I should have used in the first place.

[Anonymous Monk]

you are correct. I didn't pay enough attention to the unless. That will teach me to be more careful.