BloombergLP::bslstl::HashTable::insertIfMissing

Insert into this hash-table a ValueType object created from the specified value if a key equivalent to that of such an object does not already exist in this hash-table. Return the address of the (possibly newly inserted) element in this hash-table whose key is equivalent to that of the object created from value. Load true into the specified isInsertedFlag if a new value was inserted, and false if an equivalent key was already present. If this hash-table contains more than one element with an equivalent key, return the first such element (from the contiguous sequence of elements having a matching key). Additional buckets are allocated, as needed, to preserve the invariant loadFactor <= maxLoadFactor. If this function tries to allocate a number of buckets larger than can be represented by this hash-table's SizeType, a std::length_error exception is thrown. This method requires that the ValueType defined in the (template parameter) type KEY_CONFIG be move-insertable into this hash-table (see {Requirements on KEY_CONFIG}) and the (template parameter) type SOURCE_TYPE be implicitly convertible to ValueType.