Tomasz Zielonka wrote:
On Tue, Dec 27, 2005 at 04:39:34PM +0000, Chris Kuklewicz wrote:
Happy Holidays,
I was wondering if it this small snippet of code could be altered to require fewer OPTIONS -fallow-... switches.
It creates a show-what-i-mean function called "swim" that takes a variable number of arguments, and treats strings as-is, calling show on the other arguments.
Perhaps you can use the same trick that allows "show" to treat String = [Char] differently than all other lists? I mean the showList method.
Best regards Tomasz
That is where the class has a default function to perform showList, and the instance Show Char where showList = specialized version. The MyShow class is similar, but does not work without all the extensions. I have class Show a => MyShow a where myShow = show. Then I have a specialized version for instance MyShow String where myShow = id. If I wrap everything in a data contructor I get more flexibility, but I don't yet see how (even with GADT) to simplify things. -- Chris