applied-fp-course/level01

Level 01

The purpose of this exercise to whet our appetite a bit by spinning up an ultra basic web app. The focus will be on reading the Hackage documentation for the Wai framework. Consult the src/FirstApp/Main.hs to see the parts that are missing and what we need from the Wai package to make our "Hello, World!" application run.

Our "application" will respond to ALL incoming requests with a 200 status code response and the message "Hello, World!".

Running the program

To run the application when you are finished:

# With Cabal
$ cabal run level01-exe

# With Stack
$ stack exec level01-exe

Accessing the program

# Using curl
$ curl -XGET localhost:<port number>

You can also use a browser and go to http://localhost:<port number>.