[xmonad] Retrieving screen resolution + ghci for XMonad

[wagnerdm at seas.upenn.edu]

Quoting Nicolas Dudebout <nicolas.dudebout at gatech.edu>:

> My question is: "How can I retrieve this number from XMonad?"
>
> Another way look at that the question is: "What is the best way to figure
> out things in XMonad?"

The best way is to look around the documentation. In particular,  
you'll like these ones for this questions:

http://hackage.haskell.org/package/X11
http://hackage.haskell.org/packages/archive/X11/1.6.0/doc/html/Graphics-X11-Xinerama.html

And these ones for future questions:

http://hackage.haskell.org/package/xmonad
http://hackage.haskell.org/package/xmonad-contrib

When the documentation is insufficient... use the source. ;-)
There are several other links here that you may like:
http://xmonad.org/documentation.html

Enjoy!
~d