Re: [Haskell-cafe] Configuration Problem and Plugins

On Sat, Sep 3, 2011 at 12:33 AM, Max Rabkin wrote:

On Sat, Sep 3, 2011 at 03:15, M. George Hansen wrote:

...

Greetings,

I'm a Python programmer who is relatively new to Haskell, so go easy on me :)

I have a program that uses (or will use) plugins to render output to the user in a generic way. I'm basing the design of the plugin infrastructure on the Plugins library, and have the following interface:

data Renderer = Renderer {     initialize :: IO (),     destroy :: IO (),    render :: SystemOutput -> IO () }

How about having initialize return the render (and destroy, if necessary) functions:

initialize :: IO (SystemOutput -> IO ())

or

initialize :: IO (SystemOutput -> IO (), IO())

Thanks for your reply. That does seem like the best solution, I'll give it a try. --   M. George Hansen