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.

阅读不是可选的。

【释义】当商品价格高涨时，要像对待粪土一样迅速出售；当商品价格低廉时，要像对待珠玉一样大量购入。

我对迷失并试图找到自己位置的想法感兴趣。