The ordered_non_unique index on Boost multi_index_container has the semantics of:

a. std::set

b. std::multiset

c. std::unordered_set

d. std::unordered_multiset

Deleting an element in a multi_index_container will only invalidate the iterator to the deleted element, irrespective of the index.

a. True

b. False

c. Depends on the type of index

Which of the following bimap types has semantics equivalent to a multimap<T, U>?

a. bimap<T, multiset_of<U>>

b. bimap<multiset_of<T>, U>

c. bimap<multiset_of<T>, unconstrained_set_of<U>>

d. bimap<multiset_of<T>, multiset_if<U>>