I doubt performance is very important for the sizes of arguments I typically use but David's expression is more elegant.
On Tue, Jan 10, 2023 at 9:29 AM David Lambert <b49p23t...@gmail.com> wrote: > (<'ab') (1 e. E.)&> 'ac';'cab';'bca';'bab' NB. quicker? > 0 1 0 1 > > (<'ab') ([: +./ E.)&> 'ac';'cab';'bca';'bab' > 0 1 0 1 > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA Quantitative Consultant ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
