This article introduces a new design pattern that is not specific to any programming language but is applicable to many modern programming languages.
This is so stunningly elegant AND practical! (But my head is steaming, because it is easy to get something wrong in higher-order functional programming...) I actually have a use case for an OctoSeq (8 parameters), which I would like to map to a HexaSeq (6 parameters) because I could then just copy-paste the formula from tested code in JavaScript without worrying about confusing an array index. But it seems that doesn't work with standard Java... After that it seems I need to cast the HexaSeq into an ArrayList of 6-tuples and do other mapping there, because the the OctoSeq involves CompletableFuture.
