[Haskell-cafe] [Haskell] ANN: global-variables-1.0

[Henning Thielemann]

On Wed, 12 Oct 2011, Jean-Marie Gaillourdet wrote:

> * Simplify the "configuration problem" - at least for code in the
>   IO monad.
>
> Note, that this library does not encourage sloppy software design by
> re-introducing all bad effects of global variables.

But isn't this kind of solution for the "configuration problem" an example 
for sloppy software design? If a global configuration would be passed 
around, then you could easily use the program functions with different 
configurations simultaneously. In contrast to that, with the global IORef 
this is not possible.