Name:                yall

Version:             0.2

Synopsis:            Lenses with a southern twang

Description:         Why yet /another/ lens library? 

                     First, none of the existing libraries for Lenses were
                     adequate for my needs (specifically for my use of lenses
                     in "pez"). And anyway, why not try to create something
                     novel and better?
                     .
                     Distinguishing features:
                     .
                     - Lenses are parameterized over two Monads (by convention
                       @m@ and @w@), and look like @a -> m (b -> w a, b)@. this
                       lets us define lenses for sum types, that perform
                       validation, that do IO (e.g. persist data to disk),
                       etc., etc.
                     .
                     - a module "Data.Yall.Iso" that complements @Lens@ powerfully
                     .
                     - a rich set of category-level class instances (for now
                       from "categories") for 'Lens' and 'Iso'. These along
                       with the pre-defined primitive lenses and combinators
                       give an interface comparable to Arrow
                     .
                     You should import either "Data.Yall" or "Data.Yall.Lens",
                     and optionally "Data.Yall.Iso". "Data.Yall" is a simplified,
                     but mostly-compatible, version of a subset of "Data.Yall.Lens".
                     .
                     /TODOs/:
                     .
                     - a module providing template haskell deriving of Lenses
                     .
                     /CHANGES/:
                     .
                     - remove 'setEmpty' variants only useful on lenses better expressed in Iso
                     - create a class for lens operations, supporting...
                     - use newtype wrappers for different monadic lifting schemes
                     - better ordering for set, allowing let-floating for partial application


Homepage:            http://brandon.si/code/yall/

License:             BSD3

License-file:        LICENSE

Author:              Brandon Simmons

Maintainer:          brandon.m.simmons@gmail.com

Category:            Data

Build-type:          Simple

Cabal-version:       >=1.6

source-repository head   
    type:     git
    location: https://github.com/jberryman/yall.git
    branch:   master

Library
  Exposed-modules:     Data.Yall, Data.Yall.Lens, Data.Yall.Iso
  
  Build-depends:       categories < 1.0
                     , transformers
                     , base < 5 && >= 4