Optimizing

Enrico Weigelt weigelt@metux.de
Sun Jan 30 20:55:00 GMT 2011


* Kalle Olavi Niemitalo <kon@iki.fi> wrote:

> Although the second parameter is const void *, the language still
> allows the function to modify the object to which that points,
> provided that the object was not defined as const. 

Doesn't that defeat the whole purpose of const ?


BTW: let me add another question:


    const std::string str;

    void one(const std::string s)
    {
	str = s;
    }
    
    void two(const char* s)
    {
	one(s);
    }

    void three()
    {
	two("hello world");
    }


What actually happens here under the hood ? Is this reliable ?
(lifetime of the string object)


cu
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