Found a way to get c a trains, and even a sensible implementation for c c trains with modified parsing that may be convenient for other purposes as well.
eval =: 1 : ' a: 1 : m' CONJ =: 2 : 'v eval u' +: + CONJ'@:' +:@:+ +: +: + CONJ'@:' CONJ'@:' +:@:(+:@:+) (CONJ '@:') is an adverb which after consuming one parameter returns an adverb. The last expression is v v v c c So as long as you are willing to parse conjunctions as u v c instead of u c v, you can treat them as adverbs, and so put them in adverb trains. CONJ'^:'/ (CONJ'^:')/ 1 CONJ'^:'/ (^:1)/ + 2 CONJ'^:'/ NB. adds all except tail twice... not completely sure why. +^:2/ + 2 CONJ'^:'/ i. 4 4 36 43 50 57 + 1 CONJ'^:'/ i. 4 4 24 28 32 36 +/ 1 CONJ '"' 2 CONJ'^:' i. 4 4 4 120 376 632 888 +/ 2 CONJ'^:' i. 4 4 4 480 496 512 528 needs more utilities to be more useful, but this looks promising. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
