在C++中,你可以这样做,以确保通过参考通过参数不会修改:
void function Foo(const ¶m){}
如何在价格指数中这样做?
如果你只读一下,那就没有你,就会产生这一变数的复印件,但总体而言,如果你真的需要参考,就会使用这些变量,就象它所研究的。 参考文献胜出,给你在实验室工作带来任何效益。
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