Re: [Haskell-beginners] questions on evaluation.

On 12/01/2016 00:18, Peter McIlroy wrote:

Fabian,

For your problem of bang -> baanngggg You can derive Rein's hairy idiom from a more straightforward technique for getting a recursive definition:

First get a basic implementation using ++ and recursion:

* add a helper function with any "state variables" as arguments. * Ignore concatenation while thinking about a problem. * Use pattern matching for recursion step.

Thanks for the hint Peter -- Fabien