Why is partition no good list producer?
waldmann at imn.htwk-leipzig.de
Wed Feb 25 11:21:33 EST 2004
Jan Scheffczyk wrote:
> I'm about to optimize a fairly large Haskell program, which uses
> partition quite often (and a fold immediately afterwards).
> The GHC User guide section about RULE pragmas says that filter is a
> good producer, whereas partition is not mentioned (therefore, I
> assume it is not).
what you observe is possibly related to this:
-- Johannes Waldmann, Tel/Fax: (0341) 3076 6479 / 6480 --
------ http://www.imn.htwk-leipzig.de/~waldmann/ ---------
More information about the Glasgow-haskell-users