Programming language categories

Here, we can see four categories of programming languages. The two big categories are imperative and declarative. When programming in a declarative language, we tell the computer what we want. For example, in the following declarative code, we tell the computer that we want to find a Highlander car.

A declarative example

The following is an  example of declarative programming language:

car, err := myCars.Find("Highlander")

Contrast that with an imperative language with all code ceremony where we must construct a for loop.

An imperative example

The following is an example of an imperative programming language:

func (cars *Cars) Find(model string) (*Car, error) {
  for _, car := range *cars {
     if car.Model == model {
        return &car, nil

     }
  }
  return nil, errors.New("car not found")
}

An OOP example

Object-oriented programs (OOP) consists of stateful objects that support object-related operations, called methods, whose implementation and internal structure...