Search⌘ K
Home
Courses
Functional Programming with ReasonML

Private Methods

In this lesson, we'll learn how to implement private functions in an object.

We'll cover the following...

What are Private Methods?

In the last lesson, we implemented the rectangle type and created an object out of it. All of its functions were public.

Reason
type rectangle = {
  .
  getColor: string,
  getLength: float,
  getWidth: float,
  getArea: float
};
let rect: rectangle = {
  /* Values */
  val l = 10.5;
  val w = 5.5;
  val c = "Blue";
  /* Function definitions */
  pub getColor = c;
  pub getWidth = w;
  pub getLength = l;
  pub getArea = this#getWidth *. this#getLength
};
Js.log(rect#getColor);
Js.log(rect#getArea);

Sometimes, we need to create functions for our own ease. These ...