Re: Proposal: Lifting to TExpQ

13 Jan 2018


      Ah, yes. That's more than I could take on now, but sounds like the right 
way to do lifting.

/ Emil

Den 2018-01-12 kl. 13:17, skrev Simon Peyton Jones:
...
Indeed.  Moreover there is nothing unsafe about this, so I'd like to see this done without using unsafe-anything.
To do this, the Lift class would need to change, from
class Lift t where
    lift :: t -> Q Exp
to
class Lift t where
    lift :: t -> Q (TExp t)
This would take a bit of work, but it looks to me as if it would be a Good Thing.
Maybe someone could write up a design?
Simon
|  -----Original Message-----
|  From: Libraries [mailto:libraries-bounces@haskell.org] On Behalf Of
|  Emil Axelsson
|  Sent: 12 January 2018 10:48
|  To: Haskell Libraries 
|  Subject: Proposal: Lifting to TExpQ
|
|  Hi!
|
|  I wasn't able to find a function like this anywhere:
|
|     liftT :: Lift a => a -> TExpQ a
|     liftT = unsafeTExpCoerce . lift
|
|  It seems like a nice addition that would reduce the need for
|  `unsafeTExpCoerce` in user code.
|
|  Should it be added?
|
|  / Emil
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