Ruby is an Object-Oriented Language
Let’s explore Ruby's methods and objects.
We'll cover the following...
Everything we manipulate in Ruby is an object. The results of those manipulations are objects themselves.
When we write object-oriented code, we’re normally looking to model concepts from the real world. Typically during this modeling process, we discover categories of things that need to be represented. In an online store, the concept of a line item could be one such category. In Ruby, we’d define a class to represent each of these categories. We then use this class as a kind of factory that generates objects, instances of that class. An object is a combination of state (for example, the quantity and the product ID) and methods that use that state (perhaps a method to calculate the line item’s total cost).
We create objects by calling a constructor, a special method associated with a class. The standard constructor is called new(). Given a ...