[Haskell-cafe] Configuration Problem and Plugins

[M. George Hansen]

On Sat, Sep 3, 2011 at 12:33 AM, Max Rabkin <max.rabkin at gmail.com> wrote:
> On Sat, Sep 3, 2011 at 03:15, M. George Hansen <technopolitica at gmail.com> 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