[Haskell-cafe] File path programme

[Keean Schupke]

Jules Bean wrote:

>
> only it isn't. That's a property of a shell, the underlying OS allows 
> spaces in file names with no need for an escaping mechanism.

Okay, that was a mistake... but it does not change the point, that 
pathToString needs to work out what platform it
is on, and doing it without typeclasses makes it not extensible.

We need a way of allowing people to define new path printers (as members 
of a class)... whilst having the program
determine which platform it is on, and choosing the correct instance (at 
compile time).

    Keean.