9 Feb
2009
9 Feb
'09
6:40 p.m.
Henning Thielemann wrote:
I want for long to write math formulas in a paper in Haskell. Actually, lhs2TeX can do such transformations but it is quite limited in handling of parentheses and does not support more complicated transformations (transforming prefix notation in infix notation or vice versa with minimal parentheses).
I would like to write sumFor [0..n] (\i -> i^2) (with sumFor xs f = sum $ map f xs) which is rendered as \sum_{i=0}^{n} i^2 or integrate 1000 (a,b) (\t -> f t) to be rendered as \int_a^b f(t) \dif t
Neat idea! Can't you do implement this as a DSL? sumFor x xs f = "\sum_{" ++ x ++ "=" ++ head xs ++ "}^{" ++ last xs ++ "} " ++ f x Regards, apfelmus -- http://apfelmus.nfshost.com