This package provides first class(†) functional references. In addition to the usual operations of getting, setting and composition, plus integration with the state monad, lens families provide some unique features:
Polymorphic updating
Traversals
Cast projection functions to read-only lenses
Cast "toList" functions to read-only traversals
Cast semantic editor combinators to modify-only traversals.
(†) For optimal first-class support use the 'lens-family' package with rank 2 / rank N polymorphism. "Lens.Family.Clone" allows for first-class support of lenses and traversals for those who require Haskell 98.
| Package Version | Update ID | Released | Package Hub Version | Platforms | Subpackages |
|---|---|---|---|---|---|
| 2.1.0-bp154.1.12 info | GA Release | 2022-05-09 | 15 SP4 |
|
|
| 1.2.1-bp150.2.5 info | GA Release | 2018-08-01 | 15 |
|
|
| 1.2.1-bp150.2.6 info | GA Release | 2018-07-30 | 15 |
|
|