lens-simple: simplified import of essential lens combinators

[ bsd3, lenses-----, library ] [ Propose Tags ]

This module, Lens.Simple, just re-exports the main modules from Russell O'Connor's lens-family-core package, the original van Laarhoven lens library. Lens.Simple also re-exports makeLenses and other TH incantations from Dan Burton's associated lens-family-th.

The idea is just to make a lens-family equivalent of import Control.Lens, namely import Lens.Simple -- it's even one character shorter! As an illustration, note that the pong example from the lens library requires only this abbreviating change of imports.

Similarly, when need arises for the unfathomably more sophisticated material in Control.Lens, a change of imports will tend be all that is necessary to begin using them.

It should be kept in mind that the zoom exported here does not use MonadState from mtl but is specialized to Control.Monad.Trans.State.Strict Many of the other lenses and combinators are a bit more specialized than their Control.Lens equivalents: for example, _1 and _2 are here familiarly specialized to act just on real Haskell pairs; with the loss of abstraction we also of course lose the concomitant opaque error messages about Field1 s t a b etc.


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Versions [RSS] 0.1.0.0, 0.1.0.1, 0.1.0.2, 0.1.0.3, 0.1.0.4, 0.1.0.5, 0.1.0.6, 0.1.0.7, 0.1.0.8, 0.1.0.9
Dependencies base (>=4 && <5), lens-family (>=1.2 && <1.3), lens-family-core (>=1.2 && <1.3), lens-family-th (>=0.4 && <0.5) [details]
License BSD-3-Clause
Copyright Copyright (C) 2012,2013,2014 Russell O'Connor, 2014 michaelt
Author michaelt
Maintainer what_is_it_to_do_anything@yahoo.com
Category Lenses
Home page https://github.com/michaelt/lens-simple
Source repo head: git clone https://github.com/michaelt/lens-simple
Uploaded by MichaelThompson at 2015-05-30T20:36:25Z
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Reverse Dependencies 8 direct, 44 indirect [details]
Downloads 8580 total (24 in the last 30 days)
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Readme for lens-simple-0.1.0.0

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lens-simple

This just re-exports the combinators and elementary lenses and traversals from the original 'van Laarhoven' lens library, Russell O'Connor's lens-family package, including Lens.Family.State.Strict, and the corresponding TH module from Dan Burton's lens-family-th so you can makeLenses and makeTraversals automatically.