Re: Compiling data

On Thu, 27 May 2004, Ketil Malde wrote:

Christian Maeder writes:

...

We have put a large list in double quotes and used "read" to convert the large literal string (too big for hugs, though) into the needed list. This reduced compile time drastically, but I don't know how the runtime changed. (Also errors can only occur at runtime.)

Yes, that seemed to do the trick! Don't think there was much of a runtime cost, certainly less than the previous compile cost.

This is something I was playing with a little while ago. I had a large data structure that took a long time to build at runtime, so I thought I might try compiling the data in using Template Haskell. When I tried compiling it, though, GHC spun its wheels for several minutes before quitting (don't have the source code online, so I can't find the exact error message). If anyone's got an idea how to do this sort of thing in a reasonable amount of time, I'd be grateful. (My best current idea (actually Don Stewart's) is to build it using one program, then serialise it and dump it to disk. It's a bit hacky, though: it'd be much more pleasant to do it all inside TH.) Cheers, Mark -- i'm an old testament kind of guy i like my coffee black and my parole denied -- The Dismemberment Plan, Sentimental Man