prelude-edsl: An EDSL-motivated subset of the Prelude

[ bsd3, language, library ] [ Propose Tags ]

Prelude.EDSL exports a small subset of the Prelude: some standard types and classes plus a small number of convenience functions.

The motivation for this module is that it is common for deeply embedded domain-specific languages (EDSLs) to redefine identifiers from the Prelude, so EDSL users must hide the Prelude in their programs. However, there are certain useful things from the Prelude that are usually not redefined -- function composition being one example -- so it becomes quite awkward to have to hide everything from the Prelude.

The reason for exporting e.g the Num class but not Ord is that it is possible to give an instance for deep embeddings of the former but not the latter. For example, assuming Exp is the type of a deep embedding, we can have

(+) :: Exp -> Exp -> Exp

but not

(<) :: Exp -> Exp -> Exp

(because (<) has a Bool result, regardless of the type of the arguments).




Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees


  • No Candidates
Versions [RSS] 0.1, 0.1.1, 0.1.2, 0.2, 0.3, 0.3.1, 0.4
Dependencies base (<20) [details]
License BSD-3-Clause
Copyright Copyright (c) 2015, Emil Axelsson
Author Emil Axelsson
Category Language
Home page
Bug tracker
Source repo head: git clone
Uploaded by EmilAxelsson at 2016-04-20T12:19:35Z
Distributions NixOS:0.4
Reverse Dependencies 1 direct, 1 indirect [details]
Downloads 3988 total (2 in the last 30 days)
Rating (no votes yet) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs available [build log]
Last success reported on 2016-04-20 [all 1 reports]