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.
JD.com wants to be a century-old enterprise.
计算理论为理解什么可以计算、什么不能计算提供了基础。
绘画不是一个人所看到的,而是一个人能让别人看到的。
True leadership is about serving others, not commanding them.