barbies: Classes for working with types that can change clothes.

[ bsd3, data-structures, library ] [ Propose Tags ]

Types that are parametric on a functor are like Barbies that have an outfit for each role. This package provides the basic abstractions to work with them comfortably.


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Versions 0.1.0.0, 0.1.0.1, 0.1.2.0, 0.1.3.0, 0.1.3.1, 0.1.4.0
Change log ChangeLog.md
Dependencies base (>=4.7 && <5), bifunctors [details]
License BSD-3-Clause
Copyright 2018 Daniel Gorin
Author Daniel Gorin
Maintainer jcpetruzza@gmail.com
Category Data-structures
Home page https://github.com/jcpetruzza/barbies#readme
Bug tracker https://github.com/jcpetruzza/barbies/issues
Source repo head: git clone https://github.com/jcpetruzza/barbie
Uploaded by DanielGorin at Thu Aug 30 13:39:01 UTC 2018
Distributions NixOS:0.1.4.0, Stackage:0.1.4.0
Downloads 279 total (56 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2018-08-30 [all 1 reports]
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Readme for barbies-0.1.4.0

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barbies Build Status

Types that are parametric on unary type-constructors that control their shapes are like Barbies that can wear different clothes to become a different doll. This is a common Haskell-idiom. E.g.,


data Barbie f
  = Barbie
      { name :: f String
      , age  :: f Int
      }

b1 :: Barbie Last       -- Barbie with a monoid structure
b2 :: Barbie (Const a)  -- container Barbie
b3 :: Barbie Identity   -- Barbie's new clothes

This package provides basic classes and abstractions to work with these types and easily transform them.