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The Ruby and Rails community linklog

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Better OOP Through Lazily-Instantiated Memoized Dependencies

The outside objects created or required by a particular class in order for it to function broadly are called dependencies. There are various schools of thought around how best to define those dependencies. Let’s learn about the one I prefer to use the majority of the time. It takes advantage of three techniques Ruby provides for us: variable-like method calls, lazy instantiation, and memoization.

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