generic-optics

Generically derive traversals, lenses and prisms.

https://github.com/kcsongor/generic-lens

Version on this page:2.2.1.0@rev:2
LTS Haskell 24.24:2.2.1.0@rev:2
Stackage Nightly 2025-12-16:2.3.0.0
Latest on Hackage:2.3.0.0

See all snapshots generic-optics appears in

BSD-3-Clause licensed by Csongor Kiss
Maintained by [email protected]
This version can be pinned in stack with:generic-optics-2.2.1.0@sha256:024c8fee692d4ae1c2b0498caa566fc89c644ffbfe2bff9f77d8d5c6850fe721,3736

Module documentation for 2.2.1.0

  • Data
    • Data.Generics
      • Data.Generics.Product
        • Data.Generics.Product.Any
        • Data.Generics.Product.Fields
        • Data.Generics.Product.HList
        • Data.Generics.Product.Param
        • Data.Generics.Product.Positions
        • Data.Generics.Product.Subtype
        • Data.Generics.Product.Typed
        • Data.Generics.Product.Types
      • Data.Generics.Sum
        • Data.Generics.Sum.Any
        • Data.Generics.Sum.Constructors
        • Data.Generics.Sum.Subtype
        • Data.Generics.Sum.Typed
      • Data.Generics.Wrapped

This library uses GHC.Generics to derive efficient optics (traversals, lenses and prisms) for algebraic data types in a type-directed way, with a focus on good type inference and error messages when possible.

The library exposes an optics interface. For a van Laarhoven interface, see generic-lens.

Changes

generic-optics-2.2.1.0 (2022-01-22)

  • GHC 9.2 compatibility

generic-optics-2.2.0.0 (2021-07-13)

  • GHC 9.0 compatibility

generic-optics-2.1.0.0 (2021-01-25)

  • Bump to generic-lens-core-2.1.0.0

generic-optics-2.0.0.0 (2020-02-11)

  • Initial release