Packages tagged lenses
56 packages have this tag.
[Merge tag] (trustees only)Related tags: library (56), data (42), bsd3 (40), optics (10), generics (8), deprecated (6), mit (4), bsd2 (3), apache (2), data-structures (2), language (2), profunctors (2), program (2), testing (2), accelerate (1), ...
Name |
DLs |
Rating |
Rev Deps |
Description |
Tags |
Last U/L |
Last Version |
Maintainers |
|---|---|---|---|---|---|---|---|---|
| BiGUL | 8 | 2.25 | 1 | The Bidirectional Generic Update Language | (generics, language, lenses, library, public-domain) | 2016-08-30 | 1.0.1 | joshko, Zirun |
| app-lens | 7 | 0.0 | 1 | applicative (functional) bidirectional programming beyond composition chains | (bsd3, data, lenses, library) | 2016-09-25 | 0.1.0.3 | kztk |
| bff-mono | 9 | 0.0 | 1 | "Bidirectionalization for Free" for Monomorphic Transformations | (bsd3, data, lenses, library) | 2014-08-14 | 0.2.3 | kztk |
| concise | 3 | 0.0 | 2 | Utilities for Control.Lens.Cons | (bsd3, data, lenses, library) | 2018-02-04 | 0.1.0.1 | frasertweedale |
| data-lens-light | 7 | 0.0 | 11 | Simple lenses, minimum dependencies | (data, lenses, library, mit) | 2023-08-03 | 0.1.2.4 | RomanCheplyaka, srk |
| extended-containers-lens | 4 | 0.0 | 0 | lens instances for extended-containers | (bsd3, data-structures, lenses, library) | 2020-04-29 | 0.1.0.0 | konsumlamm |
| fclabels | 101 | 2.25 | 50 | First class accessor labels implemented as lenses. | (bsd3, data, lenses, library) | 2021-05-27 | 2.0.5.1 | AdamBergmark, ErikHesselink, SebastiaanVisser |
| haskell-time-range | 7 | 0.0 | 1 | Some useful wrappers and functions for building time ranges | (bsd3, lenses, library, time) | 2017-04-04 | 0.2.0.1 | schalmers |
| indexed-profunctors | 5 | 0.0 | 4 | Utilities for indexed profunctors | (bsd3, data, lenses, library, optics, profunctors) | 2023-06-22 | 0.1.1.1 | AdamGundry, AndresLoeh, phadej, arybczak |
| lens | 444 | 3.0 | 1480 | Lenses, Folds and Traversals | (bsd2, data, generics, lenses, library) | 2025-06-17 | 5.3.5 | EdwardKmett, EricMertens, JohnWiegley, ryanglscott |
| lens-accelerate | 6 | 0.0 | 1 | Instances to mix lens with Accelerate | (accelerate, bsd3, data, lenses, library) | 2020-08-28 | 0.3.0.0 | TrevorMcDonell |
| lens-action | 34 | 0.0 | 8 | Monadic Getters and Folds | (bsd3, data, generics, lenses, library) | 2021-11-16 | 0.2.6 | EdwardKmett, EricMertens, ryanglscott |
| lens-aeson | 40 | 2.75 | 122 | Law-abiding lenses for aeson | (data, json, lenses, library, mit) | 2023-06-27 | 1.2.3 | EdwardKmett, EricMertens, ryanglscott |
| lens-core (deprecated in favor of lens) | 10 | 1.5 | 0 | A placeholder for a future lens core package. | (deprecated, lenses, library) | 2020-09-24 | 0.2 | EdwardKmett |
| lens-datetime | 7 | 2.0 | 1 | Lenses for Data.Time.* types | (bsd3, data, lenses, library) | 2016-04-29 | 0.3 | GergelyRisko, MihalyBarasz |
| lens-errors | 7 | 0.0 | 0 | Error handling in lens chains | (bsd3, lenses, library) | 2019-07-04 | 0.2.2.0 | ChrisPenner |
| lens-family | 51 | 1.75 | 33 | Lens Families | (bsd3, data, lenses, library) | 2024-03-19 | 2.1.3 | RussellOConnor |
| lens-family-core | 50 | 0.0 | 23 | Haskell 2022 Lens Families | (bsd3, data, lenses, library) | 2024-03-19 | 2.1.3 | RussellOConnor |
| lens-indexed-plated | 2 | 0.0 | 0 | Indexed version of Plated. | (bsd2, data, generics, lenses, library) | 2023-07-08 | 0.1.0 | nicuveo |
| lens-properties | 9 | 0.0 | 1 | QuickCheck properties for lens | (bsd3, data, lenses, library) | 2018-01-09 | 4.11.1 | EdwardKmett, EricMertens, ryanglscott |
| lens-toml-parser | 17 | 0.0 | 1 | Lenses for toml-parser | (language, lenses, library) | 2025-02-27 | 0.3.0.2 | henrytill |
| lens-typelevel | 7 | 0.0 | 1 | Type-level lenses using singletons | (bsd3, dependent-types, lenses, library) | 2018-10-29 | 0.1.1.0 | jle |
| lenz (deprecated) | 27 | 0.0 | 2 | Van Laarhoven lenses | (bsd3, data, deprecated, lenses, library) | 2020-01-16 | 0.4.2.0 | |
| lenz-mtl (deprecated) | 5 | 0.0 | 0 | mtl operations with Van Laarhoven lenses | (control, data, deprecated, lenses, library) | 2019-10-25 | 0.1 | |
| lenz-template (deprecated) | 7 | 0.0 | 1 | Van Laarhoven lens templates | (data, deprecated, lenses, library, template-haskell) | 2017-11-15 | 0.2.0.0 | |
| mezzolens | 3 | 2.0 | 1 | Pure Profunctor Functional Lenses | (apache, lenses, library) | 2015-10-11 | 0.0.0 | RussellOConnor |
| microlens | 113 | 2.75 | 259 | A tiny lens library with no dependencies | (bsd3, data, lenses, library) | 2025-09-22 | 0.5.0.0 | Artyom, stevenfontanella |
| microlens-contra | 8 | 0.0 | 3 | True folds and getters for microlens | (bsd3, data, lenses, library) | 2025-09-22 | 0.1.0.4 | Artyom, stevenfontanella |
| microlens-each (deprecated in favor of microlens) | 4 | 0.0 | 1 | 'each' for microlens | (bsd3, data, deprecated, lenses, library) | 2015-04-19 | 0.1.0.0 | Artyom |
| microlens-ghc | 56 | 2.0 | 11 | microlens + array, bytestring, containers, transformers | (bsd3, data, lenses, library) | 2025-09-22 | 0.4.15.2 | Artyom, stevenfontanella |
| microlens-mtl | 42 | 0.0 | 34 | microlens support for Reader/Writer/State from mtl | (bsd3, data, lenses, library) | 2025-09-22 | 0.2.1.1 | Artyom, stevenfontanella |
| microlens-platform | 66 | 0.0 | 41 | microlens + all batteries included (best for apps) | (bsd3, data, lenses, library) | 2025-09-22 | 0.4.4.2 | Artyom, stevenfontanella |
| microlens-pro | 12 | 0.0 | 1 | Prisms and isomorphisms for microlens | (bsd3, data, lenses, library) | 2025-09-22 | 0.2.0.5 | stevenfontanella |
| microlens-th | 120 | 0.0 | 87 | Automatic generation of record lenses for microlens | (bsd3, data, lenses, library) | 2025-09-22 | 0.4.3.18 | Artyom, stevenfontanella |
| multiplate | 7 | 0.0 | 3 | Lightweight generic library for mutually recursive data types. | (generics, lenses, library, mit) | 2015-09-27 | 0.0.3 | RussellOConnor |
| mutable-lens | 9 | 0.0 | 0 | Interoperate mutable references with regular lens | (apache, data, generics, lenses, library) | 2020-11-25 | 0.4.1.0 | infinity0 |
| optics | 11 | 2.5 | 20 | Optics as an abstract interface | (bsd3, data, lenses, library, optics) | 2023-06-22 | 0.4.2.1 | AdamGundry, AndresLoeh, phadej, arybczak |
| optics-core | 14 | 2.5 | 59 | Optics as an abstract interface: core definitions | (bsd3, data, lenses, library, optics) | 2023-06-22 | 0.4.1.1 | AdamGundry, AndresLoeh, phadej, arybczak |
| optics-extra | 11 | 2.0 | 10 | Extra utilities and instances for optics-core | (bsd3, data, lenses, library, optics) | 2022-05-20 | 0.4.2.1 | AdamGundry, AndresLoeh, phadej, arybczak |
| optics-operators | 4 | 0.0 | 0 | A tiny package containing operators missing from the official package. | (data, lenses, library, mit, optics) | 2023-06-25 | 0.1.0.1 | qwbarch |
| optics-th | 29 | 0.0 | 11 | Optics construction using TemplateHaskell | (bsd3, data, lenses, library, optics) | 2022-03-22 | 0.4.1 | AdamGundry, AndresLoeh, phadej, arybczak |
| optics-vl | 5 | 0.0 | 1 | Utilities for compatibility with van Laarhoven optics | (bsd3, data, lenses, library, optics) | 2020-04-15 | 0.2.1 | AdamGundry, AndresLoeh, phadej, arybczak |
| polysemy-optics | 4 | 0.0 | 0 | Optics for Polysemy. | (bsd2, lenses, library, optics) | 2022-07-05 | 0.1.0.2 | nosewings |
| profunctor-optics | 9 | 0.0 | 0 | A compact optics library compatible with the typeclasses in profunctors. | (bsd3, data, lenses, library, profunctors, program) | 2020-03-09 | 0.0.2 | cmk |
| prolens | 5 | 2.0 | 0 | Profunctor-based lightweight implementation of optics | (data, lenses, library, mpl, optics) | 2021-03-14 | 0.0.0.1 | vrom911 |
| putlenses | 7 | 0.0 | 1 | Put-based lens library | (bsd3, generics, lenses, library) | 2014-09-30 | 0.1.3 | HugoPacheco |
| sliceofpy | 5 | 2.0 | 0 | Python-ish slicing traversals for Haskell. | (bsd3, data, lenses, library, program) | 2019-08-23 | 1.0.0 | lgastako |
| smallcheck-lens | 3 | 0.0 | 1 | SmallCheck properties for lens | (bsd3, lenses, library, testing) | 2015-09-11 | 0.3 | jdnavarro |
| split-morphism | 4 | 2.0 | 0 | Split Epimorphisms and Monomorphisms | (bsd3, data, generics, lenses, library) | 2019-09-10 | 0.1.0.1 | gvolpe |
| strict-containers-lens | 5 | 0.0 | 0 | Strict containers - Lens instances | (bsd3, data, data-structures, lenses, library) | 2022-12-12 | 0.2 | ErikDeCastroLopo, infinity0 |
| strict-lens | 5 | 0.0 | 1 | Lenses for types in strict package | (bsd3, data, lenses, library) | 2024-07-03 | 0.4.1 | phadej, infinity0 |
| tables (deprecated) | 13 | 2.0 | 2 | In-memory storage with multiple keys using lenses and traversals | (bsd3, data, deprecated, lenses, library) | 2015-01-12 | 0.4.1.1 | EdwardKmett, TimDixon |
| tasty-lens | 4 | 0.0 | 1 | Tasty TestTrees for Lens validation | (bsd3, lenses, library, testing) | 2015-09-23 | 0.3.1 | jdnavarro |
| template-haskell-optics | 11 | 0.0 | 0 | Optics for template-haskell types | (bsd3, data, lenses, library, optics) | 2023-11-16 | 0.3 | AdamGundry, AndresLoeh, phadej, arybczak |
| vitrea | 5 | 0.0 | 0 | Profunctor optics via the profunctor representation theorem. | (gpl, lenses, library) | 2020-03-30 | 0.1.0.0 | mroman42 |
| with-index | 4 | 0.0 | 1 | A tiny library for composing indexed traversals | (bsd3, data, lenses, library) | 2017-10-14 | 0.1.0.0 | PhilFreeman |