open-adt: Open algebraic data types.
This is a package candidate release! Here you can preview how this package release will appear once published to the main package index (which can be accomplished via the 'maintain' link below). Please note that once a package has been published to the main package index it cannot be undone! Please consult the package uploading documentation for more information.
This library, built upon row-types, provides types and functions for variants of various functors that all have the same type applied to them. This is very similar to, and inspired by, haskus-utils-variant. At the time of writing, the compile-time performance of haskus-utils-variant is poor for variants with many fields, which should be improved in this package by using row-types.
The main types of interest in this package are VarF and
OpenADT. VarF wraps a variant of functors, all over the same
type, and provides a functor instance that fmaps over whatever
the variant is. OpenADT is the fixed-point type of VarF,
which allows for recursive structures to be created.
A convenience function, mkVarPattern from Data.OpenADT.TH,
generates patterns that can be used as constructors for variants.
The key aspect of these patterns is that they are polymorphic
in the type of the row, allowing them to be used as constructors
for any open algebraic data type that includes a particular
constructor.
For examples, see the Data.OpenADT.Tutorial module.
Properties
| Versions | 1.0, 1.0 |
|---|---|
| Change log | None available |
| Dependencies | base (>=4.9 && <5), constraints (>=0.8 && <1), recursion-schemes (>=5 && <6), row-types (>=0.2.3 && <1), template-haskell (>=2.12 && <3) [details] |
| License | BSD-3-Clause |
| Copyright | Copyright (c) 2018 Jordan Woehr |
| Author | |
| Maintainer | Jordan Woehr |
| Category | Data |
| Home page | https://github.com/woehr/open-adt |
| Bug tracker | https://github.com/woehr/open-adt/issues |
| Source repo | head: git clone https://github.com/woehr/open-adt |
| Uploaded | by Woehr at 2018-11-25T18:22:50Z |
Modules
[Index] [Quick Jump]
Downloads
- open-adt-1.0.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
Maintainer's Corner
Package maintainers
For package maintainers and hackage trustees