On 27 April 2004 20:58, Sven Panne wrote:
Playing around with System.Posix.Terminal, I realized that there are no Read, Show, Eq, Enum, ... instances for the data types defined there (TerminalState, TerminalMode, ...). This is not a very difficult problem to solve in one's own program, but it's not very handy, either.
By all means go ahead and add these instances.
This raises a general question: What instances should be defined in the standard libraries for types like this? A general policy would be a good thing. IMHO, at least Read, Show, Typeable and Eq could be expected, having Ord, Enum and Bounded, too, would be nice.
Good point. I've been meaning to create a separate document so we have somewhere to collect general library policies like this. It's on my whiteboard... Cheers, Simon