Join Kevin Skoglund for an in-depth discussion in this video Mixins, part of Ruby Essential Training.
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In the last movie we saw how to use modules for namespacing.…In this movie we are going to look at the second more powerful use of modules,…which is to use them as mix-ins.…Let me explain what the term mix-ins means.…Unlike some other programming languages, Ruby doesn't let us have…multiple inheritance.…If we have a class, that class can inherit its behaviors from only one parent or superclass.…That's it, just one.…If we need additional functionality to be brought in that's shared among…classes, we will need to put it in a module, and then we can take that module…and all its functionality and mix it in to any class that needs it.…
It's a very powerful way for us to keep our code organized.…In my ruby_sandbox I have now got a file called person.rb that I created.…It's a very simple class for person.…It has some attributes.…It has a couple of methods that work with those attributes, nothing that we…haven't seen before.…Now, if you are like me, you frequently end up with a case like this, where…you have class Person.…
- Using Ruby in the Interactive Ruby Shell and in standalone scripts
- Learning to write custom code blocks to find, merge, and sort
- Using modules for namespacing or as mix-ins
- Reading from and writing to files
- Creating a full Ruby project from start to finish
Skill Level Beginner
1. Getting Started with Ruby
2. Ruby Object Types
3. Control Structures
4. Code Blocks
8. Working with Files
9. Ruby Project: Creating the Food Finder
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