Re: Map to store 3 items

Jerry Coffin wrote:
> class key { 
> 	string name;
> 	string prefix;
> public:
> 	key(string n, string p) : name(n), prefix(p) {}
> 	key(key const &other) : name(other.name), prefix(other.prefix) {}
> 	key &operator=(key const &other) {
> 		name = other.name;
> 		prefix = other.prefix;
> 		return *this;
> 	}

  What exactly do you need that copy constructor and assignment operator
for? They are doing exactly what the default ones would do. They are
useless.

  How about simply:

struct Key
{
    std::string name, prefix;

    Key(std::string& n = "", std::string p = ""): name(n), prefix(p) {}

    bool operator<(const Key& rhs)
    {
        return name == rhs.name ? prefix < rhs.prefix : name < rhs.name;
    }
}