Here's a misguided implementation of singleton extension in J: flattensingles=: ,/^:(1 +/@(*/\) .= $)
It works by removing any leading "1" dimensions: $ flattensingles=: ,/^:(1 +/@(*/\) .= $) i. 1 1 2 3 2 3 So A=:1 1$4 3 2 +&flattensingles A 7 6 The reason this is misguided is that sometimes you will want a leading dimension of 1. The right way to solve this problem is to not use leading dimensions of 1 when you do not want them. (The computer cannot read your mind, though, so this is best implemented in your data.) -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
