#+TITLE: service-pattern
#+Author: Yann Esposito
#+Date: [2021-03-14]

- tags :: programming
- source ::

The question about code structure and organization is one of the most
prolific one.
The problem are always the same.

Here I will talk about one possible solution in this huge design space.
First of all, I will focus on a functional programming pattern.
But I think the lessons could be extended to any generic programming
language.

Before explaining the pattern I would like to take the time to provide a
few distinctions between different programming language patterns.
Quite often, one fundamental question very important when choosing a
pattern for your code is about find the the correct level of the pattern.

There are a tower of patterns and meta-patterns.
For example in imperative programming not using =goto= statement was
considered as a programming pattern.