| With reference to the documentation [about lexically scoped type
variables] that just appeared in darcs:
For the benefit of others, the draft 6.6 documentation is here
http://www.haskell.org/ghc/dist/current/docs/users_guide/type-extensions
.html#scoped-type-variables
| Result type
Ross Paterson wrote:
data T = forall a. MkT [a]
k :: T - T
k (forall a. MkT [t]) = MkT t3
where
t3::[a] = [t,t,t]
What was wrong with the example in the documentation?
k :: T - T
k (MkT [t::a]) = MkT t3
where
t3::[a] = [t,t,t]
The type of (t) is (a) -
Brian Hulley wrote:
Ross Paterson wrote:
data T = forall a. MkT [a]
k :: T - T
k (forall a. MkT [t]) = MkT t3
where
t3::[a] = [t,t,t]
What was wrong with the example in the documentation?
k :: T - T
k (MkT [t::a]) = MkT t3
where
t3::[a] = [t,t,t]
The
