Sorry @Jon, your understanding is faulty. You can't just omit the (@:) in (u@:v).
J should come with a prominent health warning that u(v y) is not the same as (u v)y. Yet when I do a low pass over the documentation as a newcomer might see it, I don't think that fact is made sufficiently clear. IMO the clearest place is here: http://www.jsoftware.com/help/primer/hook.htm . Now compare it with: http://www.jsoftware.com/jwiki/Vocabulary/atco On Wed, Apr 30, 2014 at 4:42 PM, Jon Hough <[email protected]> wrote: > I can't understand why > func1 =. 3&+ @: (2&-) > func2 =. (3&+) (2&-) > > give different results as mondaic verbs. > func1 5 gives 0, which is what I would expect. > func2 5 gives 12, which I can't understand. > I would like to know what the difference is between func1 and func2. It is > my understanding that for monadic verbs @: is optional, so doesn't add > anything to the meaning of the whole verb. > Regards. > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
