树枝迎来南北飞鸟,树叶送走往来清风
I always try to stay positive, even in tough moments.
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.
我们必须倾听土著知识——几个世纪以来,他们一直是森林的守护者。