Re: [Haskell-cafe] How to use Template Haskell based on code that generated by another Template?

On Wed, Jul 3, 2013 at 2:25 AM, Magicloud Magiclouds wrote:

Then I got Illegal variable name: `UserPassword' When splicing a TH declaration:

Hi Magicloud, GHC seems to be trying to tell you that variables are lowercase in haskell. Since you don't have code, I'm guessing your error is from doing something like:

wrong1 = print ($(dyn "Just") 5) wrong2 = print ($(varE 'Just) 5)

Which is a compile time error since you apparently can't pass a Name which is capitalized to `VarE :: Name -> Exp' Any of these options work. They use the `ConE :: Name -> Exp' constructor instead:

opt1 = print ($(conE (mkName "Just")) 5) opt2 = print ($(conE 'Just) 5) opt3 = print ($( [| Just |]) 5 )

-- Adam