initializer_list

The type is defined in the initializer_list header

• Similar to vector but not same as it. The elements in an initializer_list are always const.

Operations

initializer_list<T> lst;    // empty list
initializer_list<T> lst{a, b, c};
 
lst2(lst);
lst2 = lst;    // copy or assign
 
lst.size();
lst.begin()
lst.end();

⚠️ Copying or assigning an initializer_list does not copy the elements in the list. After the copy, the original and the copy share the elements. (浅复制)