[Template-haskell] reifyDecl and reifyType not working

[Ian Lynagh]

On Mon, Sep 10, 2007 at 06:57:09PM +0200, Wolfgang Jeltsch wrote:
> Am Montag, 10. September 2007 14:18 schrieb Ian Lynagh:
> > On Mon, Sep 10, 2007 at 08:59:45AM +0100, Simon Peyton-Jones wrote:
> > > 'reifyDecl' is not a language construct; it's a function.  You need to
> > > import Language.Haskell.TH to bring it into scope.
> >
> > It's also just called reify these days.
> 
> of type Name.  The Template Haskell library doesn’t seem to provide a way to 
> create a Name value which always refers to the same entity, regardless of the 
> splice where it is used.  So I wanted to use workarounds like this:
> 
>     className :: Name
>     ClassD _ className _ _ _ = reifyDecl Class

You can get names with the ' and '' syntax:

$ ghci -fth
Prelude> ''Eq
GHC.Base.Eq
Prelude> 'id
GHC.Base.id


Thanks
Ian