原文:
Call by value is an asset, however, not a liability. It usually leads to more compact programs with fewer extraneous variables, because parameters can be treated as conveniently
initialized local variables in the called routine.
翻译:
按值调用是一件有用的事,但不是必须做的事。这个过程会使用比较少的外部变量,使得程序紧凑,因为形参在调用的过程中可以看作是已经初始化的局部变量。