[Haskell-cafe] State monad is missing Applicative instance

[Henning Thielemann]

On Sat, 14 Mar 2009, Peter Verswyvelen wrote:

> I was using the transformers but still had to implement the Applicative instance of State
> This package contains an applicative instance for StateT but not for State

In 'transformers' State is a type synonym for StateT Identity and thus 
does not need an own instance declaration.