Mastering Functional Programming

Principles of declarative programming

Why declarative programming? How did it appear? To understand declarative programming, we need to first understand how it is different from imperative programming. For a long time, imperative programming has been a de facto industry standard. What motivated people to start switching to the functional style from the imperative style?

In imperative programming, you rely on a set of primitives that your language provides. You combine them in a certain way so as to achieve a functionality that you need. We can understand different things under primitives. For example, these can be loop control structures, or, in the case of collections, operations specific to collections, such as creating a collection and ...