Also, in J, press F1 and you will see the Vocabulary page, which is a portal to other help. At the top click on Help for a survey of available help. Click on Pri which takes you to the Primer, a good starting point. You click on >> at the top to turn the page. J for C Programmers (click JfC) is excellent.
david alis wrote: > *>Sun Jun 7 01:12:43 HKT 2009 you wrote: > * > >> I'd still really like to see an essay explaining dyadic left and right >> (and all of their uses) in verbose detail! (I think this is a really > >> important issue for beginners to the language, since so much seems to >> depend upon it in J programming.) > > > Your postings recall my own difficulties when learning J. > Maybe seeing the explicit form of the two primitives will help: > left=: 3 : 0 NB. [ > y > : > x > ) > right=: 3 : 0 NB. ] > y > : > y > ) > > These two verbs represent a notion that is fundamental to tacit programming. > Tacit programming is the principal original idea in the language. > The "Introduction to J" is well worth reading: > http://www.jsoftware.com/help/dictionary/intro.htm > It is an approachable text. > > Some of the documents mentioned on > http://www.jsoftware.com/jwiki/Essays/Bibliography > are also instructive and go some way to answering your plea for more > accessible material. > But you should note that the ACM and IBM sites are no longer freely > accessible. > (Perhaps this is something that JSoftware can resolve?) > Regards > David > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
