Hello, I have two questions:
1) how do I find what functions are contained in a package? Can I see it also before loading it? What is the simplest way to open documentation for a package? (E.g., I want to see all functions defined in the 'stats' package, and, if possible, read what some of them are supposed to do.) Should I find and read the source? 2) I was looking around to see if and how permutations taken from n items but with lenght l <= n are usually generated by people using J. (I.e., for n=4 && l=2 I want to get 0 1 0 2 0 3 1 0 1 2 1 3 2 0 2 1 2 3 3 0 3 1 3 2 altogether n * (n-1) * ... (n-l+1) items.) But I so far only find generation of combinations and lenght-n permutations. Using combinations and permuting them sounds like undoing some work done (unnecessarily for this purpose) by the function creating the combinations. Using full lenght-n permutations and taking l elements only also doesn't sound great. In C I'd use a simple recursive procedure. Thanks for comments! Ruda ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
