Dejan escribió:
Hi all,
I have to store pointer of type (let's say) "employee" in a multi-index-container:
struct employee { employee(int id):id(id){} int id; };
Further I have to check if every id is unique:
employee* e0 = new employee(1); employee* e1 = e0; employee* e2 = new employee(1); employee* e3 = new employee(2);
my_multi_index_conatiner.insert(e0); // OK my_multi_index_conatiner.insert(e1); // BAD my_multi_index_conatiner.insert(e2); // BAD my_multi_index_conatiner.insert(e0); // OK
(I guess you meant e3 in the line above.)
Can someone tell me how a typedef of a multi_index_container fullfilling prerequisities above looks?
The following would do:
typedef multi_index_container<
employee*,
indexed_by<
ordered_unique<
member
multi_t;
The lib is smart enough that can index by employee::id even if what you store are not employees proper, but pointers to employee.
Or is a multi_index_container not the right tool?
Using Boost.MultiIndex might be overkill here if this is all you need from it: an std::set can be used also with a suitable compare predicate. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo