While the function calls to the methods do not change, it takes a lot of text editing, possibly in a lot of classes, to switch a function definition from static to dynamic linkage and vice versa.

• 要保证调用类方法的函数不变，实现把函数定义由静态链接转化为动态链接需要很多的编码工作，甚至带来很多的类，反之也一样。