BloombergLP::bslstl::HashTable<UnorderedMapKeyConfiguration<basic_string<char> const, pair<basic_string<char> const, Json>>, TransparentHash, TransparentEqualTo, allocator<pair<basic_string<char> const, Json>>>::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.