Did you know that in Ruby you can add new methods to a particular object, as opposed to adding them to the entire class?
Ruby makes it easy to re-open any class to add new methods – that’s almost always covered early on in Ruby books that talk through using the IRB; it’s a great tool for being able to evolve code incrementally as you are scripting the solution. Less common, however is discussion over how to add methods to individual objects; something that feels foreign to a lot of Java developers like myself. It turns out, it’s just as easy as adding methods to the class.
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