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Lenses

Functional references such as Lenses, Folds and Traversals

84 results

@hackage/BiGUL
The Bidirectional Generic Update Language
LicenseRef-PublicDomainv1.0.1Tue, 30 Aug 2016
@hackage/aeson-optics
Law-abiding optics for aeson
MITv1.2.1Thu, 2 May 2024
@hackage/app-lens
applicative (functional) bidirectional programming beyond composition chains
BSD-3-Clausev0.1.0.3Sun, 25 Sep 2016
@hackage/barlow-lens
lens via string literals
BSD-3-Clausev0.1.0.2Thu, 31 Aug 2023
@hackage/bff-mono
"Bidirectionalization for Free" for Monomorphic Transformations
BSD-3-Clausev0.2.3Thu, 14 Aug 2014
@hackage/composite-lens-extra
Extra lens functions for composite.
MITv0.1.0.0Sun, 4 Sep 2022
@hackage/concise
Utilities for Control.Lens.Cons
BSD-3-Clausev0.1.0.1Sun, 4 Feb 2018
@hackage/cornea
classy optical monadic state
BSD-2-Clause-Patentv0.4.0.1Sat, 5 Feb 2022
@hackage/data-lens-light
Simple lenses, minimum dependencies
MITv0.1.2.4Thu, 3 Aug 2023
@hackage/distributors
Unifying Parsers, Printers & Grammars
BSD-3-Clausev0.1.0.3Tue, 18 Mar 2025
@hackage/extended-containers-lens
lens instances for extended-containers
BSD-3-Clausev0.1.0.0Wed, 29 Apr 2020
@hackage/fclabels
First class accessor labels implemented as lenses.
BSD-3-Clausev2.0.5.1Sun, 3 Sep 2023
@hackage/generic-lens
Generically derive traversals, lenses and prisms.
BSD-3-Clausev2.2.2.0Thu, 23 Nov 2023
@hackage/generic-lens-core
Generically derive traversals, lenses and prisms.
BSD-3-Clausev2.2.1.0Thu, 23 Nov 2023
@hackage/generic-lens-labels
GHC.OverloadedLabels.IsLabel instance for lenses from ghc-generics
BSD-3-Clausev0.1.0.2Tue, 9 Jan 2018
@hackage/generic-lens-lite
Monomorphic field lens like with generic-lens
BSD-3-Clausev0.1.1Fri, 7 Jun 2024
@hackage/generic-optics
Generically derive traversals, lenses and prisms.
BSD-3-Clausev2.2.1.0Thu, 23 Nov 2023
@hackage/generic-optics-lite
Monomorphic field opics like with generic-lens
BSD-3-Clausev0.1.1Fri, 7 Jun 2024
@hackage/haskell-time-range
Some useful wrappers and functions for building time ranges
BSD-3-Clausev0.2.0.1Tue, 4 Apr 2017
@hackage/hedgehog-lens
Hedgehog properties for lens laws.
MITv0.1.0.0Thu, 14 Apr 2022
@hackage/hedgehog-optics
Hedgehog properties for optics laws
MITv1.0.0.4Wed, 22 Jan 2025
@hackage/http-client-lens
Optics for http-client
BSD-3-Clausev0.1.0Tue, 15 Apr 2014
@hackage/indexed-profunctors
Utilities for indexed profunctors
BSD-3-Clausev0.1.1.1Thu, 22 Jun 2023
@hackage/lens
Lenses, Folds and Traversals
BSD-2-Clausev5.3.4Mon, 3 Mar 2025
@hackage/lens-accelerate
Instances to mix lens with Accelerate
BSD-3-Clausev0.3.0.0Fri, 28 Aug 2020
@hackage/lens-action
Monadic Getters and Folds
BSD-3-Clausev0.2.6Sun, 12 Mar 2023
@hackage/lens-aeson
Law-abiding lenses for aeson
MITv1.2.3Sun, 27 Aug 2023
@hackage/lens-core
A placeholder for a future lens core package.
(BSD-2-Clause OR Apache-2.0)v0.2Thu, 24 Sep 2020
@hackage/lens-datetime
Lenses for Data.Time.* types
BSD-3-Clausev0.3Fri, 29 Apr 2016
@hackage/lens-errors
Error handling in lens chains
BSD-3-Clausev0.2.2.0Thu, 4 Jul 2019
@hackage/lens-family
Lens Families
BSD-3-Clausev2.1.3Tue, 19 Mar 2024
@hackage/lens-family-core
Haskell 2022 Lens Families
BSD-3-Clausev2.1.3Tue, 19 Mar 2024
@hackage/lens-indexed-plated
Indexed version of Plated.
BSD-2-Clausev0.1.0Sat, 8 Jul 2023
@hackage/lens-named
Helper for use with lens
BSD-3-Clausev0.1.0.2Thu, 1 Feb 2018
@hackage/lens-properties
QuickCheck properties for lens
BSD-3-Clausev4.11.1Tue, 23 Apr 2024
@hackage/lens-simple
simplified import of elementary lens-family combinators
BSD-3-Clausev0.1.0.9Thu, 23 Jun 2016
@hackage/lens-toml-parser
Lenses for toml-parser
ISCv0.3.0.2Thu, 27 Feb 2025
@hackage/lens-typelevel
Type-level lenses using singletons
BSD-3-Clausev0.1.1.0Mon, 29 Oct 2018
@hackage/lenz
Van Laarhoven lenses
BSD-3-Clausev0.4.2.0Tue, 11 Feb 2020
@hackage/lenz-mtl
mtl operations with Van Laarhoven lenses
LicenseRef-OtherLicensev0.1Tue, 11 Feb 2020
@hackage/lenz-template
Van Laarhoven lens templates
LicenseRef-OtherLicensev0.2.0.0Tue, 11 Feb 2020
@hackage/mezzolens
Pure Profunctor Functional Lenses
Apache-2.0v0.0.0Sun, 11 Oct 2015
@hackage/microlens
A tiny lens library with no dependencies
BSD-3-Clausev0.4.14.0Thu, 20 Feb 2025
@hackage/microlens-contra
True folds and getters for microlens
BSD-3-Clausev0.1.0.3Wed, 11 Oct 2023
@hackage/microlens-each
'each' for microlens
BSD-3-Clausev0.1.0.0Sun, 19 Apr 2015
@hackage/microlens-ghc
microlens + array, bytestring, containers, transformers
BSD-3-Clausev0.4.15.1Sat, 8 Mar 2025
@hackage/microlens-mtl
microlens support for Reader/Writer/State from mtl
BSD-3-Clausev0.2.1.0Thu, 20 Feb 2025
@hackage/microlens-platform
microlens + all batteries included (best for apps)
BSD-3-Clausev0.4.4.1Fri, 21 Feb 2025
@hackage/microlens-pro
Prisms and isomorphisms for microlens
BSD-3-Clausev0.2.0.4Sat, 8 Mar 2025
@hackage/microlens-th
Automatic generation of record lenses for microlens
BSD-3-Clausev0.4.3.17Sat, 8 Mar 2025
@hackage/minilens
A minimalistic lens library, providing only the simplest, most basic lens functionality.
GPL-3.0-onlyv1.0.0.2Tue, 31 May 2016
@hackage/multiplate
Lightweight generic library for mutually recursive data types.
MITv0.0.3Mon, 14 May 2018
@hackage/mutable-lens
Interoperate mutable references with regular lens
Apache-2.0v0.4.1.0Wed, 25 Nov 2020
@hackage/nat-optics
Refinement types for natural numbers with an optics interface
MITv1.0.1.1Tue, 21 Jan 2025
@hackage/optics
Optics as an abstract interface
BSD-3-Clausev0.4.2.1Mon, 13 May 2024
@hackage/optics-core
Optics as an abstract interface: core definitions
BSD-3-Clausev0.4.1.1Mon, 13 May 2024
@hackage/optics-extra
Extra utilities and instances for optics-core
BSD-3-Clausev0.4.2.1Fri, 2 Aug 2024
@hackage/optics-operators
A tiny package containing operators missing from the official package.
MITv0.1.0.1Tue, 12 Sep 2023
@hackage/optics-th
Optics construction using TemplateHaskell
BSD-3-Clausev0.4.1Mon, 13 May 2024
@hackage/optics-vl
Utilities for compatibility with van Laarhoven optics
BSD-3-Clausev0.2.1Mon, 22 Feb 2021
@hackage/persistent-template-classy
Generate classy lens field accessors for persistent models
BSD-3-Clausev0.2.0Sun, 30 May 2021
@hackage/polysemy-optics
Optics for Polysemy.
BSD-2-Clausev0.1.0.2Tue, 5 Jul 2022
@hackage/profunctor-optics
A compact optics library compatible with the typeclasses in profunctors.
BSD-3-Clausev0.0.2Mon, 9 Mar 2020
@hackage/prolens
Profunctor-based lightweight implementation of optics
MPL-2.0v0.0.0.1Sun, 14 Mar 2021
@hackage/putlenses
Put-based lens library
BSD-3-Clausev0.1.3Tue, 30 Sep 2014
@hackage/ral-lens
Length-indexed random access lists: lens utilities.
GPL-2.0-or-laterv0.2.1Sat, 8 Jun 2024
@hackage/ral-optics
Length-indexed random access lists: optics utilities.
GPL-2.0-or-laterv0.2.1Sat, 8 Jun 2024
@hackage/refractor
See README for more info
MPL-2.0v0.0.1.0Fri, 10 Apr 2020
@hackage/sliceofpy
Python-ish slicing traversals for Haskell.
BSD-3-Clausev1.0.0Fri, 23 Aug 2019
@hackage/smallcheck-lens
SmallCheck properties for lens
BSD-3-Clausev0.3Fri, 11 Sep 2015
@hackage/split-morphism
Split Epimorphisms and Monomorphisms
BSD-3-Clausev0.1.0.1Tue, 10 Sep 2019
@hackage/strict-containers-lens
Strict containers - Lens instances
BSD-3-Clausev0.2Fri, 12 Jul 2024
@hackage/strict-lens
Lenses for types in strict package
BSD-3-Clausev0.4.1Wed, 3 Jul 2024
@hackage/strict-optics
Optics for types in strict package
BSD-3-Clausev0.4.1Wed, 3 Jul 2024
@hackage/tables
In-memory storage with multiple keys using lenses and traversals
BSD-3-Clausev0.4.1.1Mon, 12 Jan 2015
@hackage/tasty-lens
Tasty TestTrees for Lens validation
BSD-3-Clausev0.3.1Wed, 23 Sep 2015
@hackage/template-haskell-optics
Optics for template-haskell types
BSD-3-Clausev0.3Thu, 16 Nov 2023
@hackage/text-lens
Lenses for operating over text
BSD-3-Clausev0.1.1Sun, 29 Jan 2017
@hackage/these-lens
Lenses for These
BSD-3-Clausev1.0.2Thu, 16 May 2024
@hackage/these-optics
Optics for These
BSD-3-Clausev1.0.2Thu, 16 May 2024
@hackage/vec-lens
Vec: length-indexed (sized) list: lens support
BSD-3-Clausev0.4.1Sat, 8 Jun 2024
@hackage/vec-optics
Vec: length-indexed (sized) list: optics support
BSD-3-Clausev0.4.1Sat, 8 Jun 2024
@hackage/vitrea
Profunctor optics via the profunctor representation theorem.
GPL-3.0-or-laterv0.1.0.0Mon, 30 Mar 2020
@hackage/with-index
A tiny library for composing indexed traversals
BSD-3-Clausev0.1.0.0Sat, 14 Oct 2017