[Haskell-cafe] Is StateT what I need?

[Robin Green]

On Mon, 17 Dec 2007 16:04:24 -0500
"Brandon S. Allbery KF8NH" <allbery at ece.cmu.edu> wrote:

> 
> On Dec 17, 2007, at 15:41 , Brent Yorgey wrote:
> 
> > Yes, and in fact, you don't even need foldM.  The only thing that  
> > actually uses IO is the readFile, so ideally
> 
> Actually, a quick check indicates that the regex functions used in  
> getProcInfo are in IO as well (?!).

That's because they're implemented in C, and anything implemented in C
is potentially impure. Although, I'd have thought that they'd
*actually* be pure.
-- 
Robin