正如乔纳森在文中所言，本文适合刚毕业的大学生和刚入门的程序员。如果你已是高级开发人员，或许你能在本文中看到自己的身影。-As Jonathan said in the article, this article suitable for recent college graduates and beginning programmers. If you have a senior developer, perhaps you can see your own shadow in this article.