The Pragmatic Haskeller
A collection of "recipes" (no pun intended) to pragmatically get things done in Haskell. We'll build a simple web application for managing recipes. In particular, we'll focus on:
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How to parse Json files describing recipes
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How to automatically convert between Json and Bson for storing recipes inside MongoDB
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Interfacing with an external API
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A DSL for describing recipes
Follow the tutorials!
I wrote a complete series on "The School of Haskell":
Installation
cd <episode folder>
cabal installinside each subfolder to install the desired version.
You will need the Haskell Platform installed or at least cabal
and cabal install.
Avoid Cabal Hell
Consider using hsenv to work inside an isolate environment everytime:
https://github.com/tmhedberg/hsenv.git
Usage is simple: clone the pragmatic project, cd inside it, then:
hsenv
source .hsenv/bin/activate
Et voilà ! Now you can install whatever you like without the risk of polluting
your global Cabal installation. Is the trick I use myself; I've installed in
the global Cabal only barebone stuff, all the rest lives inside a separate
isolated environment! If you have cabal hell inside hsenv, simply delete
.hsenv and repeat the steps above; you'll have a brand new environment
to spoil!
Running each episode
cabal install
pragmatic
To run the "pragmatic" server.
Show me a demo!
Sure! Here we go: http://ec2-107-22-56-237.compute-1.amazonaws.com:8000