initializer_list

initializer_list.cpp

#include <initializer_list>
#include <string>
#include <list>
#include <iostream>

using namespace std;

class Book
{
public:
    string bookname;
    double price;
    string author;

    Book(const string &b, double p, const string &a) :
        bookname(b),
        price(p),
        author(a) {}
};

class S
{
public:
    S(initializer_list<Book> _books)
    {
        books.insert(books.end(), _books.begin(), _books.end());
    }

    void append(initializer_list<Book> _books)
    {
        books.insert(books.end(), _books.begin(), _books.end());
    }

    list<Book> books;
};


int main()
{
    S s = {{"aaa", 1, "bbb"}};

    cout << s.books.size() << endl;
    cout << s.books.back().author << endl;

    s.append({{"ccc", 2, "ddd"}, {"eee", 3, "fff"}});

    cout << s.books.size() << endl;
    cout << s.books.back().author << endl;

    return 0;
}