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里氏替换原则是面向对象编程中的一个基本概念,确保派生类可以替代其基类使用,而不会改变程序的正确性。
The Liskov Substitution Principle is a fundamental concept in object-oriented programming, ensuring that derived classes can be used in place of their base classes without altering the correctness of the program.
Quality is not just the absence of defects; it is the presence of value.
渔业不仅要追求经济效益,更要注重生态效益和社会效益。
User needs are the driving force behind our progress.
Every project is a new challenge, a new opportunity to learn.
一个国家的真正财富来自于它的土壤。