kindof the same as your idea *~(^:3) 12 429981696
completely off topic, but would it be a good or bad thing if, assuming there was a shortage of ascii mnemonics, and some need, if monadic +: and *: were redefined considering that +~ and *~ do the same? ----- Original Message ----- From: Erling Hellenäs <erl...@erlinghellenas.se> To: programm...@jsoftware.com Cc: Sent: Saturday, July 19, 2014 3:05:03 PM Subject: Re: [Jprogramming] High Speed Train Challenge Another way to do the same thing, but not a solution, is this expression: 3 (*(*(***)*)*) 4 NB. Funny way 429981696 Anyone can find a nice recursive way to write it? My best shot: 12 1:`([ * [ $: [: <: ])@.([: * ]) 8 NB. Complicated way 429981696 It's a recursion? * $: * /Erling On 2014-07-19 20:48, Raul Miller wrote: > Probably, yes. > > And I was sort of provocative by not going with the implied limitations. > > But there's can be quite a bit of ambiguity when key issues are > implied, rather than addressed or illustrated. > > This is a problem I face myself, quite often: How can I be aware of > important issues which matter to other people, when I am incredibly > focused on my own point of view? > > That said: > > (1) Erling Hellenäs had already posted some solutions which satisfied > the "one verb" constraint using * as that verb (at the time I made my > 42981696"_ post). > > (2) Realizing that derived verbs are J verbs is an important lesson > which beginning J programmers often overlook. > > You can't really be a good J progammer if you don't understand the > grammar of the language. And it's not that the grammar is hard to > understand - it's extremely simple. But it's so simple that it's also > easy to sometimes get by with false generalizations about its rules. > > This leads into the almost inevitable "no that's not what I meant" > sorts of social issues. > > So yes, my post was - in a sense - somewhat bratty. But I felt that > the underlying issue was important enough to raise the point and stick > with it at least until someone called me on it. > > Thanks, > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
