The tostring of C ++ is very troublesome.

Effect:

//main.cpp :: main()map<char, vector<bool> > temp= make_test_val();cout<< toString(temp);

Use the template to implement tostring (any type) and then it is convenient

The following code is used:

//tools.h#include<map>#include<vector>using namespace std;//---toString---//builderclass tostring_bulider{public:    string _str;    string _prefix;    string _comma;    string _suffix;    bool first_item;    tostring_bulider(){        first_item= true;        _prefix= "[";        _suffix= "]";        _comma= ", ";    }    void prefix(){        _str+= _prefix;    }    template<typename T>    void push(const T& item){        if(first_item){            first_item= false;        }else{            _str+= _comma;        }        _str+= ::toString(item);    }    void suffix(){        _str+= _suffix;    }    string toString()const{return _str;}};class tostring_map_bulider{public:    string _str;    string _prefix;    string _comma;    string _eq;    string _suffix;    bool first_item;    tostring_map_bulider(){        first_item= true;        _prefix= "{";        _suffix= "}";        _comma= ", ";        _eq= ":";    }    void prefix(){        _str+= _prefix;    }    template<typename T>    void push(const T& item){        if(first_item){            first_item= false;        }else{            _str+= _comma;        }        _str+= ::toString(item.first)+ _eq+ ::toString(item.second);    }    void suffix(){        _str+= _suffix;    }    string toString()const{return _str;}};//etc.//default typestring toString(const string& s){return s;}//system typetemplate<typename T>string toString(const T& v){    return v.toString();}template<>string toString<char>(const char& v){    return string()+v;}template<>string toString<bool>(const bool& v){    return v? "true": "false";}//etc.//Containertemplate<typename T, typename Tfmt>string toString(const T& v, Tfmt fmter){    fmter.prefix();    for(auto iter = begin(v); iter!=end(v); ++iter)        fmter.push(*iter);     fmter.suffix();    return move(toString(fmter));}//std Containertemplate<typename T>string toString(const vector<T>& v){    return toString(v,tostring_bulider());}template<typename Tk, typename Tv>string toString(const map<Tk,Tv>& v){    return toString(v, tostring_map_bulider());}//etc.

However, it is shown as follows:

{a:[false, false, true, false], b:[false, false, true, false, true, false, true, false]}

You can add the following code:

//main.cppclass my_tostring_map_bulider: public tostring_map_bulider{public:string toString_vector_bool(const vector<bool>& v){string ret;for(auto iter= begin(v); iter!=end(v); ++iter)ret+= *iter? "1": "0";return ret;}void push(const pair<char, vector<bool> >& item){if(first_item){first_item= false;}else{_str+= _comma;}_str+= ::toString(item.first)+ _eq+ toString_vector_bool(item.second);}};

Then use the following code:

//main.cpp :: main()map<char, vector<bool> > temp= make_test_val();cout<< toString(temp, my_tostring_map_bulider());

The output is as follows:

{a:0010, b:00101010}