Value stream
Returns a Stream of all values for this Lookup
Element by key
Returns element associated with the given key
key
Note. This operation will fail, if value is not found. Thus, use safer get_? in most cases
Multi key lookup
Returns a stream of values for given stream of keys.
Note: There may be less values, than keys. Keys with no assosiated values are ignored.
Optional element by key
Optionally returns element associated with the given key
Key stream
Returns a Stream of all keys for this Lookup
Key/value pair stream
Returns a Stream of all key/value pairs for this Lookup