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Funx: Reorganizing Eq and Ord

JKWA

JKWA

Author of Advanced Functional Programming with Elixir

Funx: Reorganizing Eq and Ord

When designing Funx I leveraged protocols, which meant some concessions.

In Haskell, you can state class relationships like “every Monad is a Functor” (via superclass constraints). In Elixir, there isn’t an equivalent way to express that kind of protocol hierarchy. So instead of creating separate protocols and implying a relationship I can’t encode, I grouped the operations into a single protocol.

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