C++primer练习12.33

练习12.33

为QueryResult类添加begin和end成员，返回lines的指定位置，再添加get_file成员，返回成员file的shared_ptr指针

#ifndef QUERYRESULT
#define QUERYRESULT

#include <string>
#include <vector>
#include <stdlib.h> 
#include <map>
#include <set>
#include <memory>

using std::string;
using std::vector;
using std::map;
using std::set;
using std::shared_ptr;
class TextQuery;

class QueryResult{
    public:
        typedef vector<string>::size_type line_no;
        friend class TextQuery;
        QueryResult(string s,shared_ptr<set<line_no>> p,shared_ptr<vector<string>> text):sword(s),lines(p),paragraph(text){}
        set<line_no>::const_iterator begin(){return lines->cbegin();    }
        set<line_no>::const_iterator end(){return lines->cend();        }
        shared_ptr<vector<string>> get_file(){return paragraph;        }
        string sword;
        shared_ptr<set<line_no>> lines;
        shared_ptr<vector<string>> paragraph;
                    
    private:
    
    
    
};



#endif