Hi All, I am trying to do something a bit simple, but am really struggling to find the right expression.
Suppose I have some data, and some default values to use in case there is no data: ]data =. a:,(1;2;3),a:,(3;2) ]fill =. 10 20 30 40 50 60 70 80 The result I want is: 10;1;2;3;50;3;2 I have tried soooo many permutation of this form with error after error... data ( [...@.(a: = [) ) fill Is there a simple trick that I am missing to do this task? Perhaps there is way to use ^: because @. is not very efficient and usually requires "0? Thanks, Matthew. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
