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The book’s mantra is: If you follow these patterns, your code will be idiomatic and maintainable. To help you apply these concepts:

: Always provide a useful implementation to make debugging easier. The book’s mantra is: If you follow these

: They have names and aren't required to create a new object every time. The book’s mantra is: If you follow these

: Pass resources to the constructor instead of hardcoding them (Singleton/Static utilities). 2. Methods Common to All Objects The book’s mantra is: If you follow these

: Inheritance breaks encapsulation; use wrappers or delegates instead.

: Don't use them for normal control flow.