Assignment operators
Declared in <bslstl_multimap.h>
Assign to this object the value and comparator of the specified rhs object, propagate to this object the allocator of rhs if the ALLOCATOR type has trait propagate_on_container_copy_assignment, and return a reference providing modifiable access to this object. If an exception is thrown, *this is left in a valid but unspecified state. This method requires that the (template parameter) types KEY and VALUE both be copy-assignable and copy-insertable into this multimap (see {Requirements on KEY and VALUE}).
multimap<KEY, VALUE, COMPARATOR, ALLOCATOR>&
operator=(multimap const& rhs);Move-assign the contents of the specified rhs multimap into this multimap.
multimap<KEY, VALUE, COMPARATOR, ALLOCATOR>&
operator=(BloombergLP::bslmf::MovableRef<multimap> rhs) noexcept(/* see-below */);Assign to this object the value resulting from first clearing this multimap and then inserting each value_type object in the specified values initializer list, and return a reference providing modifiable access to this object. This method requires that the (template parameter) types KEY and VALUE both be copy-insertable into this multimap (see {Requirements on KEY and VALUE}).
multimap<KEY, VALUE, COMPARATOR, ALLOCATOR>&
operator=(std::initializer_list<value_type> values);