Shouln't the expressions below be added to Phrases? in 4C.Test perhaps. With the variant 0 [EMAIL PROTECTED] ~: (Bill Lam).
Also, in Phrases 8A. Numbers & Counting, Index from boolean could be replaced by the newer primitive I. , isn't? ~ Gilles Roger Hui wrote: > The problem can be solved in many ways. If efficiency is a concern > you'd have to do some benchmarks to see which one is more efficient. > > *./@~: > i.~ -: i:~ > # = [EMAIL PROTECTED] > -:~. > > My guess is that the first one is the most efficient. > > > > ----- Original Message ----- > From: bill lam <[EMAIL PROTECTED]> > Date: Tuesday, December 11, 2007 7:36 > Subject: [Jprogramming] test for unique > To: Programming forum <[EMAIL PROTECTED]> > >>Any suggestion for a good phrase for testing whether all items >>are unique? >>eg. >> unique 2 3 1 >>1 >> >> unique 4 2$'ABC' >>0 > > ---------------------------------------------------------------------- ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
