>I want to have an array, say 5x5 with all nils unless set to something else.
>However, when I set m[0][0] to 0 .. all 0 indices are set to zero.. Hmm..
>never asked for that to be the case.
>There's some funky stuff going on here.
>irb(main):001:0> n = 5
>=> 5
>irb(main):002:0> m = [[nil]*n]*n