ghc-lens-family-core

This package provides first class(†) functional references in Van Laarhoven style supporting the following optics: * Lenses (view, over) * Traversals (toListOf, matching, over) * Setters (over) * Grates (zipWithOf, under, review) * Resetters (under) * Adapters (view, review) * Grids (toListOf, over / under, review) * Prisms (matching, over / under, review) * Getters (view) * Folders (toListOf) * Reviewers (review) (†) 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 cannot support rank 2 polymorphism.

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