On Nov 7, 2005, at 9:02 AM, Bulat Ziganshin wrote:
...Simon, can you please write some docs about all these foreign stuff and their interaction with pure Haskell code? i see some bits of this information in these newsgroups regularly (for example, are you remember discussion about using lots of hashtables in program?), but there is no definitive source
Just wanted to let people know that I've been working on improving Data.HashTable, with the help of Ketil Malde's badly performing code and a bunch of locally-rolled tests. Things are looking much better now, but will look better still when Simon M's GC fixes are more widely deployed (which ought to make the extant code perform much better). I'm still not satisfied with any of the solutions, in part because I don't know whether they will also improve when I apply the GC fixes; if they don't ehy'll merely be on a par with the current library, and I only intend to release something which actually appears to work better in practice. That said, none of the HashTable problems had anything to do with foreign code. I've also created a QuickCheck suite for testing Data.HashTable. Very handy. I don't know if there's a standard way to release testing code for extant libraries... -Jan-Willem Maessen