# The th-alpha package

Compare TH expressions (or clauses, patterns, etc.) for alpha equivalence. That is, compare for equality modulo the renaming of bound variables.

areExpAEq [| \x -> x |] [| \y -> y |] -- True

do let x = mkName "x" let y = mkName "y" runQ $ (LamE [VarP x] (VarE x)) @= (LamE [VarP y] (VarE y)) -- True

This can be useful when for instance testing libraries that use Template Haskell - usually correctness is only defined up to alpha equivalence.

## Properties

Versions | 0.1.0.0, 0.1.0.1, 0.1.0.2, 0.2.0.0, 0.2.0.1, 0.2.0.2, 0.2.1.0 |
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Dependencies | base (==4.*), containers, mmorph (>1 && <2), mtl (==2.*), template-haskell, th-desugar (>=1.4 && <1.7), transformers [details] |

License | BSD3 |

Copyright | Julian K. Arni |

Author | Julian K. Arni |

Maintainer | Julian K. Arni <jkarni@gmail.com> |

Category | Language |

Home page | https://github.com/jkarni/th-alpha |

Bug tracker | https://github.com/jkarni/th-alpha/issues |

Source repository | head: git clone https://github.com/jkarni/th-alpha |

Uploaded | Fri Jul 1 13:57:23 UTC 2016 by jkarni |

Distributions | NixOS:0.2.1.0 |

Downloads | 1289 total (166 in the last 30 days) |

Rating | (no votes yet) [estimated by rule of succession] |

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Status | Docs available [build log] Last success reported on 2016-11-22 [all 1 reports] Hackage Matrix CI |

## Downloads

- th-alpha-0.2.1.0.tar.gz [browse] (Cabal source package)
- Package description (included in the package)