Example of State
Learn how the state is used and its advantages in Ruby with the help of an example.
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Now, it’s more or less clear what the state is. But how is it used in practice? What’s the advantage of having a state? Why would we keep the state inside of an object, and why do we need to encapsulate?
As we already know, an object is a living organism. So, it’s better to combine multiple variables that affect the flow of a program under one hood and avoid using them separately.
Robot example
Imagine we have a robot that walks on the ground, and we’re observing the scene from the top. The robot starts moving at a certain point and can move left, right, up, and down by any number of steps.
At first glance, it looks like we could avoid using any classes here. ...