Is there a way for std :: map to “edit” values, such as a key predicate?

Question

I am wondering if it is possible to create something like a predicate for std :: map for all its values, so I don't need to edit the values ​​before inserting them into the map.

What I would like is something like this:

mymap["username"] = " Marlon "; // notice the space on both sides of my name
assert(mymap["username"] == "Marlon"); // no more whitespace

In the context, I create std :: map for the .ini file and . I would like it to automatically remove leading / trailing spaces from the values ​​when I want to restore them . I already created a predicate to ignore the wrapper and spaces from the key, so I want to know if the same can be done for the value.

Answer 1

-, std::string

• std::string
• std::string.

" " . std::map .

, , , INI get/set.

Answer 2

, , ,

//map<string,string> testMap; Old Map definition
tMap testMap;

class tMap
{
        public:

                map<mystring,string> _tMap;

                mystring& operator [] (const char *index)
                {
                        return _tMap[index];
                }

};

mystring again - , '==' .
, (Wrapper), . , .