Thanks, that makes sense in the context of the dictionary definition now. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Raul Miller Sent: Sunday, 12 December 2010 8:02 a.m. To: Programming forum Subject: Re: [Jprogramming] Sudoku solution query
On Sat, Dec 11, 2010 at 12:40 AM, Robert Goudie <[email protected]> wrote: > j =. (]/. i...@#) ,{;~3#i.3 > > generates the indicies for each box. As a relative newcomer to J I am > trying to figure out the relationship between the matrix created by the > expression on the LHS of the ravel (,) and the paired box values on the RHS > of this expression. Have you looked up /. in J's dictionary? http://www.jsoftware.com/help/dictionary/d421.htm If t=. ,{;~3#i.3 then (]/. i...@#) t is t ]/. i.81 So the boxes are the keys being used by ]/. and all of the numbers corresponding to the same kind of box get arranged in a single row of the result. Does this help? -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
