Re: [Haskell-cafe] primitive operations in StateT

On 16 April 2013 15:04, Clark Gaebel wrote:

Hi list!

I want to use MVectors in a StateT monad transformer.

How do I do that? StateT isn't a member of 'PrimMonad', and I have no idea how to make it one.

You can use Control.Monad.Trans.lift to lift the PrimMonad operations to PrimMonad m => StateT s m

Regards, - Clark

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