Hi, What is actually the best practice to replace one item of a list?
The only way I know feels a bit complicated: a =: i. 5 0 1 2 3 4 (2 {. a), 100, (3 }. a) 0 1 100 3 4 Best regards, Sebastian ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm