iterator

main.cpp

#include <iostream>
#include <string>
#include <vector>

struct custom_vectroid {
	using data_type = std::vector<std::string>;
	data_type data;
	
	using iterator               = data_type::iterator;
	using const_iterator         = data_type::const_iterator;
	using reverse_iterator       = data_type::reverse_iterator;
	using const_reverse_iterator = data_type::const_reverse_iterator;
	
	iterator begin() { return data.begin(); }
	iterator end() { return data.end(); }
	const_iterator begin() const { return data.begin(); }
	const_iterator end() const { return data.end(); }
	
	// from C++11
	const_iterator cbegin() const { return data.cbegin(); }
	const_iterator cend() const { return data.cend(); }
	
	reverse_iterator rbegin() { return data.rbegin(); }
	reverse_iterator rend() { return data.rend(); }
	const_reverse_iterator rbegin() const { return data.rbegin(); }
	const_reverse_iterator rend() const { return data.rend(); }
	
	// from C++11
	const_reverse_iterator crbegin() const { return data.crbegin(); }
	const_reverse_iterator crend() const { return data.crend(); }
};

int main(int argc, char *argv[]) {
	custom_vectroid v;
	v.data = {"A", "Happy", "New", "Year", "2016"};
	for(auto i : v) {
		std::cout << i << std::endl;
	}
	return EXIT_SUCCESS;
}