Re: [Haskell-cafe] File path programme

Keean Schupke writes:

...

So let's define a new algebraic datatype something like:

I think you can guess what comming - why not use a class for extensibility: class Path p where ... The path class would provide all the operations for using paths...

Yup, good idea, and I think this would also allow David Roundy's suggestion of a FastString implementation of filepaths - it becomes just another instance.

This has the advantage that people can add instances for platforms without having to alter the code in the library...

Exactly. Yes. Regards, Malcolm