2016 Elm Workshop

Order form toy project for a perfectly normal pet shop.

You can see the finished project that we will be building here: DEMO

• Click here to view live presentation
• If the workshop has ended, you can review the slides here

In this project you will find:

A src/complete directory and a src/kit directory.

• In the complete folder you will find the source code for the finished project.
• In the kit folder you will find the exercise files for this workshop.

We will be working together to implement the logic in the complete folder using the exercise files found in the kit folder.

PLEASE DO NOT go right off and read the source code for the completed project. The code in complete is intended to serve as a resource in case you get stuck, or want to compare after the fact, not as a cheat sheet.

Getting setup

(if you have docker on a linux host skip to the end)

Install Elm

First, you are going to need Elm installed locally. You can get the installer from elm-lang.org, or below (mirrored):

• Mac -- installer
• Windows -- installer
• Anywhere -- npm installer (below), build from source

Or just use npm

npm install -g elm@0.17.0

Editor setup

You can use any editor you like, however there is reasonably good Elm support for the following editors:

• Atom
  • apm install language-elm linter linter-elm-make
• Emacs
  • elm-mode
• Vim
  • elm-vim
• Lightable
  • elm-light
• Sublime Text
  • Elm.tmLanguage
• Visual Studio Code
  • vscode-elm

Running the project

git clone https://github.com/Fresheyeball/lambdaconf-2016-elm-workshop.git
cd lambdaconf-2016-elm-workshop
elm reactor

Elm comes with a server and compilation assistant called Reactor. After running elm reactor you should be able to visit localhost:8000/src/kit/Main.elm in your browser to see the output of your code.

CAUTION

We will be working with the latest version of the Elm compiler 0.17.x, which came out this month. If you have issues or run into weirdness, usually rm -rf elm-stuff will clear it up.

Docker

If you have docker on a Linux host, there is a prepped image to run this project. Running this script will launch the Atom editor with Elm packages installed and a browser window with the Reactor. If the browser window fails to open just visit localhost:8000/src/kit/Main.elm

./docker-dev.sh

When you are done it's recommended you run xhost - as this script opens up xorg to serve atom from inside the container.

Elm Resources

Lets GO!