Note the live version of this on haskell wiki is at:
http://www.haskell.org/haskellwiki/Wrapper_types
The link below is for the old non-editible version of the haskel wiki.
On Thu, 2007-03-15 at 15:34 -0600, Derek Elkins wrote:
> Wolfgang Jeltsch wrote:
> > Am Donnerstag, 15. März 2007 03:23 schri
Wolfgang Jeltsch wrote:
Am Donnerstag, 15. März 2007 03:23 schrieb Daniel Mahler:
Is there any way for the same type to implement a typeclass multiple ways.
You can wrap the type using newtype, thus creating a new type which can
implement type class methods differently.
This technique is so
Am Donnerstag, 15. März 2007 03:23 schrieb Daniel Mahler:
> Is there any way for the same type to implement a typeclass multiple ways.
You can wrap the type using newtype, thus creating a new type which can
implement type class methods differently.
> […]
Best wishes,
Wolfgang
__
Is there any way for the same type to implement a typeclass multiple ways.
The particular situation I have in mind is composing
two monad trasformers of the same type, say reader monad.
In pure theory one reader can lift through another,
but in an implementation one gets a name clash.
thanks
Dan
