One way woul be to represent them usnig a data structure. If it's only
artihmetic operations, it should be pretty easy.
data Arith = Var String
| Plus Artih Arith
| Mult Arith Arith
| Pow Arith Arith
x + y would be Plus (Var "x") (Var "y"), so on so forth..
You can even use infix constructors like :+:, :*:, :^:
On 4 June 2010 16:37, Martin Drautzburg
Dear all,
If I have a problem where I have to select from a set of operations, how would I print the result?
Example: If I can chose from (x+y), (x*y), (x^2+y)... and I feed them all into my problem solver and it finds that "(x*y) is right", how can I print that string?
-- Martin _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
-- Ozgur Akgun