Testing the lab "An Introductory Course in J" and noticed that the result was not the same in J6 and J7. Chapter 9 Section 10:
J6 result: ]op =: (i. 2 0 4) ; (i. 0 2) ; ,6 ┌────┬──┬─┐ │ │ │6│ └────┴──┴─┘ ;op NB. Result of raze 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 0 $ ;op NB. The shape of the empty result 4 1 4 J7 Result: ]op =: (i. 2 0 4) ; (i. 0 2) ; 6 NB. The operand ┌────┬──┬─┐ │ │ │6│ └────┴──┴─┘ ;op NB. Result of raze $ ;op NB. The shape of the empty result 4 0 4 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
