Hi,
thanks for all the great feedback.
Your GADT encodes an existential datatype. The closest attempt to encode
existential types in (something like) SYB that I know of is in Section 5.3 of
Alexey's PhD thesis [1]. Having said that, he uses the spine view, which
makes the generic view in
Hi Oscar,
On Sat, May 15, 2010 at 22:19, Oscar Finnsson oscar.finns...@gmail.comwrote:
(...)
I guess my questions are:
1. Is it possible to combine GADTs with Scrap your Boilerplate?
Your GADT encodes an existential datatype. The closest attempt to encode
existential types in (something
On Sun, May 16, 2010 at 2:34 AM, Tom Hawkins tomahawk...@gmail.com wrote:
I got the GADT
data DataBox where
DataBox :: (Show d, Eq d, Data d) = d - DataBox
[snip]
but I can't figure out how to implement gunfold for DataBox.
The error message is
Text/XML/Generic.hs:274:23:
I got the GADT
data DataBox where
DataBox :: (Show d, Eq d, Data d) = d - DataBox
[snip]
but I can't figure out how to implement gunfold for DataBox.
The error message is
Text/XML/Generic.hs:274:23:
Ambiguous type variable `b' in the constraints:
I had a similar difficultly in
