I think the foreign conjunction "Is NaN" is what you are after. 128!:5 y
http://www.jsoftware.com/jwiki/help/dictionary/dx128.htm > From: Leigh J. Halliwell > > I want to eliminate all instances of _. from a numeric list, e.g., x =. > 0 1 > 2 _. 3 4. But I can get J to recognize the indeterminate, because '_. > = _.' > Is false. How do I do it? Thanks. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
