The Liskov Substitution Principle is a fundamental concept in object-oriented programming, stating that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.
译文:头顶三尺之高,一定会有监督行为的神明;所以无论是收获福祉,还是避开祸难都是由自身决定的。
Take everything you like seriously, except yourselves.