{"id":192,"date":"2007-10-18T01:38:00","date_gmt":"2007-10-18T06:38:00","guid":{"rendered":"http:\/\/wangxiaohu.com\/blog\/?p=192"},"modified":"2007-10-18T01:38:00","modified_gmt":"2007-10-18T06:38:00","slug":"use-base-class-iterator-in-a-derived-class-with-a-template","status":"publish","type":"post","link":"https:\/\/wangxiaohu.com\/blog\/?p=192","title":{"rendered":"Use base class iterator in a derived class with a template"},"content":{"rendered":"

To tell the truth, I am still a newbie in C++. So I decided to take a evening and do a quick exercise. What I am trying to do is to write a class which uses the iterator from its ‘parent’ class:<\/p>\n

\n
 1: <\/span>#include <vector><\/pre>\n
 2: <\/span>#include <iostream><\/pre>\n
 3: <\/span> <\/pre>\n
 4: <\/span>template <typename T><\/pre>\n
 5: <\/span>class<\/span> myVector : public<\/span> std::vector<T><\/pre>\n
 6: <\/span>{<\/pre>\n
 7: <\/span>public<\/span>:<\/pre>\n
 8: <\/span> void<\/span> Test();<\/pre>\n
 9: <\/span>};<\/pre>\n
 10: <\/span> <\/pre>\n
 11: <\/span>template <typename T><\/pre>\n
 12: <\/span>void<\/span> myVector<T>::Test()<\/pre>\n
 13: <\/span>{<\/pre>\n
 14: <\/span> typename<\/font> std::vector<T>::iterator i;<\/pre>\n
 15: <\/span> <\/pre>\n
 16: <\/span> for<\/span> (i = this<\/span>->begin(); i != this<\/span>->end(); i++)<\/pre>\n
 17: <\/span> std::cout << *i << std::endl;<\/pre>\n
 18: <\/span> <\/pre>\n
 19: <\/span> return<\/span>;<\/pre>\n
 20: <\/span>}<\/pre>\n
 21: <\/span> <\/pre>\n
 22: <\/span>int<\/span> main()<\/pre>\n
 23: <\/span>{<\/pre>\n
 24: <\/span> myVector<int<\/span>> v;<\/pre>\n
 25: <\/span> v.push_back(1);<\/pre>\n
 26: <\/span> v.push_back(2);<\/pre>\n
 27: <\/span> v.push_back(3);<\/pre>\n
 28: <\/span> v.push_back(4);<\/pre>\n
 29: <\/span> v.Test();<\/pre>\n
 30: <\/span> return<\/span> 0;<\/pre>\n
 31: <\/span>}<\/pre>\n<\/div>\n