[Haskell-cafe] Re: [Haskell] Re: Global Variables and IO initializers

I might really want to call the initialisation twice. If you use global variables, the library can only be initialised once... but what if I really want to use the library twice? With the state in a type passed between functions, you can have multiple different states active at once. Keean. Benjamin Franksen wrote:

Yes, whenever possible I would use this approach. Unfortunately, there are libraries (or just modules) that need to do some IO action in order to produce the (A)DT. In this case it _will_ make a difference how often you call it. But then this is just how IO actions are by nature, isn't it?

Ben