[Haskell-cafe] Filesystem questions

[Henning Thielemann]

On Sun, 14 Oct 2007, Bryan O'Sullivan wrote:

> Yitzchak Gale wrote:
>
>> I do think that it is much better to provide IO laziness
>> using monad transformers (or whatever) rather than
>> unsafe IO.
>
> That's fair enough.  I think it would be great if you were to turn your ideas 
> into a library and provide a few examples of its use.

I'm also interested in a more structured approach to lazy reading of data. 
I used unsafeInterleaveIO several times (including readFile) and got 
several problems including too many open files. Problems, that are 
certainly solved easily if you have more control over the IO laziness.