https://github.com/arianvp/hconfig

Applicative configuration DSL
https://github.com/arianvp/hconfig

applicative config dsl haskell

Last synced: 1 day ago
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Applicative configuration DSL

• Host: GitHub
• URL: https://github.com/arianvp/hconfig
• Owner: arianvp
• License: bsd-3-clause
• Created: 2017-04-29T14:53:46.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-04-30T13:23:51.000Z (almost 8 years ago)
• Last Synced: 2024-12-13T01:11:18.279Z (about 2 months ago)
• Topics: applicative, config, dsl, haskell
• Language: Haskell
• Size: 8.79 KB
• Stars: 3
• Watchers: 3
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# hconfig

Applicative configuration inspired by the talk

[Move Over Free Monads: Make Way for Free Applicatives!][talk]

[talk]: https://www.youtube.com/watch?v=H28QqxO7Ihc

## Example

You can use the applicative DSL in `Data.Config` to build a description of your

configuration. This description contains the keys and types of your

configuration, for consumption by various _interpreters_. Here is an example of

such a description, for PostgreSQL connections:

```haskell

{-# LANGUAGE OverloadedStrings #-}

import Data.Text (Text)

import Database.PostgreSQL (PoolConfiguration)

postgreSQLPool :: Config Text PoolConfiguration

postgreSQLPool =

  PoolConfiguration

  <$> string "user"

  <*> string "password"

  <*> string "host"

  <*> int    "port"

  <*> string "database"

```