__DL__ changed the topic of #ocaml to: OCaml 3.09.0 available! Archive of Caml Weekly News: http://sardes.inrialpes.fr/~aschmitt/cwn/ | A free book: http://cristal.inria.fr/~remy/cours/appsem/ | Mailing List: http://caml.inria.fr/bin/wilma/caml-list/ | Cookbook: http://pleac.sourceforge.net/
<Mozillion> hmm.. I'm printing a AST using Format/fprintf.. which works nice with fprintf f "%a%a%a" node a foo b bar c and such
<Mozillion> but now I have to number the nodes.. that is depth-first wise... so I've tried something like fprintf f "%a%a%a" node (n, a) foo (n + 1, b) bar (n + 1, c)
<Mozillion> but that is obviously incorrect buecause function foo f (n, elem) could expand to for example five nodes so the 'bar' branches will have been numbered wrong
<Mozillion> since the printing functions can't return anything.. someone any idea how to do this recursively?
<Mozillion> s/bar (n + 1, c)/bar (n + 2, c)/
<vodka-goo> I'm not sure whether I understand completely
<vodka-goo> but I'd use a ref
<vodka-goo> not purely functional, but it doesn't hurt if you use a local one
<vodka-goo> see what I mean ?
<Mozillion> so start with n being a ref to 0, and then pass n on.. each function incrementing it
<vodka-goo> yeah
<Mozillion> great, yes
<vodka-goo> if you want your code to be thread-safe you should take care of not sharing the reference (shouldn't be too hard)
<Mozillion> nah, it only exist within the tree walking functions
<Mozillion> besides, there are no threads :P
<Mozillion> pfoo.. it's quite a lot of usage of 'n' to change... let's postpone that till tomorrow
<Mozillion> gnight.. and thanks
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