[Haskell-cafe] [RFC] benchmarks of bytestrings, teaser

[Don Stewart]

rl:
> Don Stewart wrote:
> >
> > cnt    :: B.ByteString -> Int64
> > cnt bs = B.length (B.filter (== ' ') bs)
> >
> > [...]
> > 
> >Now, this memory result is suspicious, I wonder if the now obsolete 'array 
> >fusion'
> >is messing things up. In Data.ByteString.Lazy, we have:
> 
> Are you sure you have a fusible length? I think I only added it to NDP 
> after stream fusion went in.

It was the array fusion from prior to the stream stuff (foldl . filter).
Which was in fact messing up the simplifier. I've fixed this, (turned
off array fusion for now), and things are back to normal. (well, much
faster, actually).

-- Don