[Haskell-cafe] Re: static constants -- ideas?

[Don Stewart]

jay:
> Don Stewart dons at galois.com:
> >jay:
> >> Don Stewart dons at galois.com:
> >> >jay:
> >> >> I also have constants that are too large to compile. I am resigned to
> >> >> loading them from data files--other solutions seem even worse.
> >> ...
> >> >> Data.Binary eases the irritation somewhat.
> >> >
> >> >Did you try bytestring literals (and maybe parsing them in-memory with
> >> >Data.Binary)?
> 
> I finally squeezed enough time to try it, and it didn't work for me.

> 
> --
> ghc Overflow.hs
> [1 of 1] Compiling Overflow         ( Overflow.hs, Overflow.o )

Enable optimisations!  Compile with ghc -O2. You need this to avoid
having a very slow pack call at runtime.

> Overflow.hs:8:10:stack overflow: use +RTS -K<size> to increase it
> --
> 
> where Overflow.hs is in the vicinity of 40M and looks like
> 
> --
> {-# LANGUAGE OverloadedStrings #-}
> 
> module Overflow where
> 
> import qualified Data.ByteString.Lazy as S
> 
> bigData :: S.ByteString
> bigData = "\0\0\0\0\0\5\67\195\0\0\0\0...
> --
> 
> I didn't compress it, because Codec.Compression.GZip didn't compile for
> me. It looked like a library change since 6.6 broke it.

Probably you don't have the zlib.h header?
Or make sure you have the latest version of zlib from hackage -- it does
work.
  
> Is there a handy string escaping function in the libraries somewhere? It
> only took a minute to write one, and I spent longer than that looking,
> so maybe it's the wrong question.... Surely it's in there somewhere, and
> I'm just 2 dum 2 c.

The show function?