Video Review: Object Models

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Overview

This video gives an overview of object models and how to make our classes more powerful.

Objectives

• Create a class and add reader and writer methods

• Define class methods with an explicit self receiver

• Capture new instances of self in the initialize method

• Use a class variable or constant to hold the instances of the class

• Explain why we avoid using the return keyword from within a loop

• Define a find_by_location method to find a particular instance of a class

• Abstract the logic of the find_by_location method to a detect enumerable method

• Define a class method find_all_by_location to find all instances with that location using the select enumerable method

• Define a custom constructor method to create instances from attributes scraped from a website

<iframe width="100%" height="720" src="https://www.youtube.com/embed/vENMFapLonA?rel=0&showinfo=0" frameborder="0" allowfullscreen></iframe>

Resources

Additional Video on Object Models

• This video also covers many of the above topics in the main lesson video. Feel free to use this as another refresher on object models.

View OO Ruby Video Review: Object Models on Learn.co and start learning to code for free.