If we dig more diligently we must not devalue so-called routine reporting.
如果我们能更加努力地去调查,我们就不应贬低所谓的例行报道的价值。
Attackers can sometimes use this and similar tricks to ensure that what the application program sees and what the called routine sees are different.
攻击者有时可以利用这一点或类似的技巧来确保应用程序看到的内容和所调用的例程看到的内容不同。
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.
可以看出,按值调用的目的是为了方便函数编写者,因为参数可以被当作已经初始化过的局部变量来使用,从而使程序更简洁。
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