Re: [Haskell-cafe] Re: Can we come out of a monad?

That's true I suppose, although since there are no implicit parameters in haskell, it really has to be a DSL in implementation, rather than just theory right? On Mon, Aug 2, 2010 at 12:51 PM, Ivan Miljenovic wrote:

On 2 August 2010 14:47, Lyndon Maydwell wrote:

...

I thought it was pure as, conceptually, readFile isn't 'run' rather it constructs a pure function that accepts a unique world state as a parameter. This might be totally unrealistic, but this is how I see IO functions remaining pure. Is this a good mental model?

That is what I believe Ertugrul is aiming at, but I believe that that is a "rule-lawyering" interpretation in trying to argue that all of Haskell is pure.  We could use this same argument to state that _all_ programming languages are pure, as they too have implict "World" state variables that get passed around.

-- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com