Re: [Haskell-beginners] Actions v. Functions

Matt, Start with the Functorshttp://learnyouahaskell.com/functors-applicative-functors-and-monoidschapter of LYAH and continue reading through the chapter on Monads. http://learnyouahaskell.com/a-fistful-of-monads Another very good resource is You Could Have Invented Monadshttp://blog.sigfpe.com/2006/08/you-could-have-invented-monads-and.html . Arjun On Sat, Oct 19, 2013 at 5:09 PM, MJ Williams wrote:

For example, `main = do input <- getLine ...', where `getLine' is an action as distinguished from a function such as `main'. Other examples of actions in Haskell include `print', `putStrLn' and any process that reads from or writes to a file. Of course, the list of actions doesn't end there, though the examples here should answer your question. Sincerely, Matt

At 21:44 19/10/2013, you wrote:

What do you mean by "action"?

Antoine

On Fri, Oct 18, 2013 at 9:26 PM, MJ Williams wrote: Hello What are the formal properties of an action? How does an action differ from a function? Sincerely, Matthew

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