Monocle 3 Roadmap

This page summarizes the projects mentioned and recommended in the original post on

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  • tofu

    Functional programming toolbox (by TinkoffCreditSystems)

    Note: I believe tofu-optics uses a profunctor encoding under the hood which let them side steps some type inference issues. Better to check with Odomontois.

  • Monocly

    Optics experimentation for Dotty

    Now, Scala 3 might change that. We will have parametric functions and opaque types, so I think it is worth trying. We have already made experiments in Monocly, a playground repo for Scala 3 optics. I believe Yillin Wei has a fork with a proof of concept of profunctor encoding that supports index and coindex optics.

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  • Monocle

    Optics library for Scala

    We always have work to do, for example to define scalfix rules to automate the migration

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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