Law of Demeter and How to Work With It

The Law of Demeter is an interesting programming principle. It’s the only one I know of that has a near-mathematical…

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Pass Streams Instead of Lists

Opening disclaimer: this isn’t always a good idea. I’ll present the idea, along with some of the reasons why it’s…

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Refactoring to Allow Test Doubles

Sometimes, when you make a class, it directly instantiates an object to use in its methods. For example:    …

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Plug into the Wall: Interfaces to the Outside World

Just to be clear, this article isn’t about interfacing with hardware, though what it says does apply a little bit.…

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Functional Factory Pattern

Do you want a REALLY quick way to make a Factory object? Then lambdas or other function-passing is what you…

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How I’d Like Java To Be

I like Java. I enjoy programming in Java. But after using Python for a while, there are several things I…

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About Mixed-Paradigm Languages Such As Java and Python

Intro There are two really popular programming paradigms (yay, alliteration!) out there: functional programming and object-oriented programming. There is another…

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Java 8 Functional Programming: Lazy Instantiation

Singletons often instantiate themselves lazily, and sometimes, if the object is heavy enough, class fields can be instantiated lazily. Generally,…

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Transforming Collections with Decorators

The Decorator Pattern Ever since first learning the programming design patterns, the decorator pattern has been my favorite. It seemed…

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