Object Orientation Mantra

The lack of getter/setter methods doesn't mean that some data doesn't flow through the system. Nonetheless, it's best to minimize data movement as much as possible. My experience is that maintainability is inversely proportionate to the amount of data that moves between objects. Though you might not see how yet, you can actually eliminate most of this data movement.

By designing carefully and focusing on what you must do rather than how you'll do it, you eliminate the vast majority of getter/setter methods in your program. Don't ask for the information you need to do the work; ask the object that has the information to do the work for you.

Excerpted from: Why getter and setter methods are evil By Allen Holub

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