Arabbit.425 net.lang.apl utzoo!decvax!harpo!npois!alice!rabbit!ark Wed Apr 7 20:14:44 1982 The hardest part of parsing APL I think the hardest part of parsing APL is distinguishing +/[X]-Y from A[X]-Y The point is that you can't decide if the - is monadic or dyadic until you have seen past the [, which may be an arbitrary number of symbols away. Ick.