Sold. Now all everyone has to do is bikeshed the names. ;) -Edward On Sun, Aug 25, 2013 at 5:48 AM, Henning Thielemann < schlepptop@henning-thielemann.de> wrote:
Am 24.08.2013 19:52, schrieb Edward Kmett:
I would like to replace this instance with
instance a ~ Char => IsString [a] where fromString = id
Your complaint proves my concerns about those FlexibleInstances. The best instance is a Haskell 98 instance:
class IsCharList a where fromCharList :: [a] -> String
instance IsCharList Char where fromCharList = id
instance IsCharList a => IsString [a] where fromString = fromCharList
This is both the most flexible solution and it is portable.
http://www.haskell.org/**haskellwiki/List_instancehttp://www.haskell.org/haskellwiki/List_instance