[Haskell-beginners] what type is 'Val 9' when 'Val Int' a ctor
for 'Expr e'?
aslatter at gmail.com
Wed Oct 22 17:44:07 EDT 2008
On Wed, Oct 22, 2008 at 4:10 PM, Jason Dusek <jason.dusek at gmail.com> wrote:
> Can you explain why you think you need that annotation? I
> can't see an ambiguous interpretation of your code.
The confusion is that the 'Val' constructor is for the 'Expr' type,
which has a phantom type parameter in its type constructor.
Can you load that up into GHCi and type:
> :t val_9
which should cause GHCi to print out what it thinks the type of that
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