<ul><li>The 'New Rule' introduces a clear boundary based on intent when deciding whether to use constructors or dependency injection.</li><li>Using 'new' is appropriate when the object is incidental and purely internal to the class's logic.</li><li>Overusing dependency injection for simple, incidental objects leads to bloated constructors and unnecessary complexity.</li><li>Injecting collaborators instead of using 'new' promotes testability, observability, and evolutionary design.</li></ul>

The ‘New Rule’ — When to Use Constructors vs. Dependency Injection

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