Raul, Regarding your comment about needing paren's, I don't think I agree, unless you are thinking because the implicit part is already a verb without parens. Does the following experiment verify that no paren's are required. But perhaps you mean a fork or hook needs to be used to give the verb the extra information contained in the explicit version?
v =. filters&(link"2) tesl"3 2 'v' nl 3 ┌─┐ │v│ └─┘ $cntrl v image 3 2 2 3 2 2 Regarding your following observation, I don't understand your meaning. Why do mention the explicit verb? Are you saying there is an inherent difference between the powers of implicit and 4 : 'xxx' verbs that I don't understand? That is, are you saying that explicit verbs can split rank that implicit verbs cannot? You're correct that I have been able to make the implicit verb to work well with rank 3 "filter" value. So, the explicit form makes "filter" the left-hand (u) value of the adverb "tesl", where the implicit form can ONLY make "cntrl" the left-hand of the whole verb (which I named "v" in my example above). So, maybe that is the difference between the explicit and the implicit: the x in the explicit can force the "cntrl" to be the adverb's argument, not the verb's argument? "But another issue is that the left argument to your explicit verb is rank 4 and you want to split it at rank 3 with a different x& binding for each of these items." What do you think? Thanks, to all, On Mon, May 20, 2019 at 7:48 PM Raul Miller <rauldmil...@gmail.com> wrote: > One issue here is that you "3 2 is missing a parentheses in your tacit > sentence. (Throw in a ] placeholder to capture your y argument.) > > But another issue is that the left argument to your explicit verb is rank 4 > and you want to split it at rank 3 with a different x& binding for each of > these items. > > Maybe try rephrasing this using explicit loops to illustrate how you would > need to build a tacit version? (Personally, I wouldn't bother--it would > work, but you'd introduce so much complexity that I think your efforts > might be better spent elsewhere...) > > -- > Raul > > -- (B=) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm