Bartholomew Parkis wrote:
I'm having trouble understanding the u@(v"(1+lv,_)) definition of the . operator. What is lv? This doesn't seem to convert to valid code that I can put into the interpreter.
It is the left rank of v, lv is mentioned in the second paragraph in http://www.jsoftware.com/help/dictionary/dict3.htm it means the composite verb is [EMAIL PROTECTED] with with rank 1+lv,_ or (1+lv),_ eg, * is rank 0 so that (i.3 4) (+/ . *) i.4 14 38 62 (i.3 4) (+/@(*"1 _)) i.4 14 38 62 regards, ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
