k is a single verb which produces 3 values for each element of its argument.
It is also a fork, and each tine of the fork has a leaf which is a bond (n&v). So if you give it a left argument, that becomes a repeat count for those operations. There are some other properties which you can observe by inspection (each tine of the fork is composed of rank zero verbs, for example). Does that help? Thanks, -- Raul On Wed, Apr 15, 2015 at 2:34 AM, Jon Hough <[email protected]> wrote: > I am slightly confused with how the tie (gerund) and or the linear > representation are related to this: > > k =: (^@:(3&*)) d. 1 2 3 > > > results in : > > > > > ((3"0 * ^@(3&*)) , (9"0 * ^@(3&*)) , 27"0 * ^@(3&*))"0 > > > Which seems to be three verbs; If I do : > k 3 > > > I get : > > > 24309.3 72927.8 218783 > And I can also do: > > > (0{k) 3 > > > 24309.3 > > > > > So whatever k is, it returns three nouns for one input noun, and it is > indexable so is an array of some sort. But what exactly (in terms of > parts-of-speech) is k? > > > >> Date: Tue, 14 Apr 2015 18:59:52 +0200 >> From: [email protected] >> To: [email protected] >> Subject: Re: [Jprogramming] Verb to string and Verb array >> >> Exactly. Actually, any time you want something to work as if it were >> assigned to a name, you'd need brackets. >> Eg: *: +&. won't work, while *: (+&.) will. But this might be out of your >> scope, since +&. is an adverb, not a verb. >> >> 2015-04-14 17:35 GMT+02:00 Jon Hough <[email protected]>: >> >> > Thanks, >> > Just to be clear, '(',')',~ is just to bracketify the verb so its fork >> > (in this case) works, right? >> > >> > --- Original Message --- >> > >> > From: "Jan-Pieter Jacobs" <[email protected]> >> > Sent: April 14, 2015 5:26 PM >> > To: [email protected] >> > Subject: Re: [Jprogramming] Verb to string and Verb array >> > >> > Hey John, >> > >> > I think 1. you can do using 5!:5: >> > >> > mean =: +/%# >> > mean i.5 >> > 2 >> > 5!:5 <'mean' >> > +/ % # >> > datatype 5!:5 <'mean' >> > literal >> > ". (('(',')',~5!:5) <'mean'),'0 1 2 3 4' >> > 2 >> > stringify =: '(',')',~5!:5 >> > (stringify <'mean') , '0 1 2 3 4' >> > (+/ % #)0 1 2 3 4 >> > >> > For point 2, you can use gerunds to pass around verbs in a list: >> > >> > ger =: +`-`*`% >> > ger >> > ┌─┬─┬─┬─┐ >> > │+│-│*│%│ >> > └─┴─┴─┴─┘ >> > 10 ((1{ger) `: 0) 20 >> > _10 >> > >> > There's a massive amount of uses for gerunds, like / , ^: , } , and so >> > on... >> > >> > If you'd want to do these things (make a noun (or list there of)) out of >> > any type of word, I think you should be looking at atomic representation. >> > >> > Jan-Pieter >> > >> > 2015-04-14 10:11 GMT+02:00 Jon Hough <[email protected]>: >> > >> > > I have a couple of questions: >> > > 1. Is it possible to convert a verb, e.g. +/%# , to a string?": '+/%# 2 >> > 3 >> > > 4' executes a stringed verb with an argument. But how would I convert a >> > > verb to a string in the first place? >> > > Also, I discovered the eval verb >> > > >> > > >> > > eval=: 1 : 0 >> > > >> > > ". 'w =. ' , u >> > > >> > > (ar < 'w') ab >> > > >> > > ) >> > > >> > > >> > > Does this have an inverse? >> > > >> > > 2. If I have two verbs (or conjunctions, adverbs for that matter), can I >> > > not pass them around in a list? >> > > e.g. in other languages, like C# I can put functions into a list >> > > (List<Action> for example). >> > > I searched JforC and the J website and couldn't find any way to do this. >> > > Thanks Jon >> > > ---------------------------------------------------------------------- >> > > For information about J forums see http://www.jsoftware.com/forums.htm >> > > >> > ---------------------------------------------------------------------- >> > For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- >> > For information about J forums see http://www.jsoftware.com/forums.htm >> > >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
