Popularity
6.5
Growing
Activity
0.0
Stable
12
2
5

Monthly Downloads: 3
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Tags: Generic     Records     Generics     Lens     OverloadeLabels    
Latest version: v0.1.0.0

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Summary

This package provides the module Data.Generic.Labels, which provides an IsLabel instance allowing one to use OverloadedLabels to access field lenses from the generic-lens library.

As the IsLabel instance provided is necessarily orphan, your code will break if you depend on this library and any other library that provides an orphan IsLabel instance at the same time. As such, this should be considered a toy.

Example:

{-# LANGUAGE OverloadedLabels, DeriveGeneric #- }

module Example

import Data.Generics.Labels()
import GHC.Generics
import Control.Lens

data Foo = Foo {bar :: Int} deriving (Generic)

_bar :: Lens' Foo Int
_bar = #bar