What do you understand by the Null Object pattern?

What do you understand by the Null Object pattern?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: hard

标签: interviewbit, design-patterns, topic-specific, oop

参考答案摘要

In this pattern, a null object is used for replacing the check of validating if the object instance is null or not. This Null Object has a “do nothing” relationship and these can be used for providing...

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