Since you tagged this with functional: In FP you replace loops with folds. Folds are elimination rules of composite types. There is the Foldable type class for types of the shape Container<A> (type class is just a set of overloaded functions). Recursion schemes go one step forward by encoding the most common and most general fold patterns.
Thanks for your comment, Iven. That's an interesting point. While you can definitely use fold like standard functions in C++ (such as accumulate) those are not the only ones to achieve a more functional style than the conventional way.
This is C++, we don't speak about pure functional programming, but a more functional style.
As I see it there are different levels of FP. One is that If you use functions without side effects, functions that produce always the same output given the same input, functions that are pure you are already a few steps ahead. If you use the C++ STL extensively you are on the right path of FP.
By the way, it's funny that it was created by someone who doesn't like OOP, but is rather an advocate for FP and generic programming. How funny is that he made such an enourmous contribution to "C with classes".
Thanks again for your comment.
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Since you tagged this with functional: In FP you replace loops with folds. Folds are elimination rules of composite types. There is the
Foldabletype class for types of the shapeContainer<A>(type class is just a set of overloaded functions). Recursion schemes go one step forward by encoding the most common and most general fold patterns.Thanks for your comment, Iven. That's an interesting point. While you can definitely use fold like standard functions in C++ (such as accumulate) those are not the only ones to achieve a more functional style than the conventional way.
This is C++, we don't speak about pure functional programming, but a more functional style.
As I see it there are different levels of FP. One is that If you use functions without side effects, functions that produce always the same output given the same input, functions that are pure you are already a few steps ahead. If you use the C++ STL extensively you are on the right path of FP.
By the way, it's funny that it was created by someone who doesn't like OOP, but is rather an advocate for FP and generic programming. How funny is that he made such an enourmous contribution to "C with classes".
Thanks again for your comment.