Re: Why is partition no good list producer?

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: http://www.mail-archive.com/haskell@haskell.org/msg07508.html -- -- Johannes Waldmann, Tel/Fax: (0341) 3076 6479 / 6480 -- ------ http://www.imn.htwk-leipzig.de/~waldmann/ ---------