f1=: 13 :'+/ x ^ i.y'
f2=: 3 :'+/ x ^ i.y' NB. Same (?) verb using explicit instead of tacit 3 f1 4 NB. Expect (3^0) + (3^1) + (3^2) + (3^3) = 40 40 3 f2 4 NB. Expect (3^0) + (3^1) + (3^2) + (3^3) = 40 |domain error: f2 | 3 f2 4 f1 [: (+/) ([ ^ ([: i. ])) f2 3 : '+/ x ^ i.y' +/ 3 ^ i.4 NB. Execute equivalent of f2 and get correct result 40 _________________________________________________________________ The next generation of Hotmail is here! http://www.newhotmail.co.uk/ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
