This session was not filmed.
Many, many services on the internet provide APIs that are RESTful. They use HTTP and JSON, widely supported technologies, to give a standard way of accessing whatever each service provides - from uploading adverts on Facebook to plugging a bot into a Slack channel.
In this entirely hands-on tutorial, participants will build such a service using established Haskell libraries, to provide a very simple booking system accessible through a JSON+HTTP API.
This introductory level session will not require much experience in
Haskell at all, but by the end, participants should walk away with a working system built using common libraries such as
servant for providing typed web APIs, and
aeson for JSON, with a touch of generics and software transactional memory.
Depending on time and interest, the session might cover optional topics such as serving other content types (for example, HTML or CSV), approaches to storing bookings persistently, or what's actually going on with some of the more interesting type signatures that will be used.
Participants will require a laptop with
stack and some other pre-requisites installed, and connectivity to the Skills Matter wifi. A guide to getting the prerequisites installed will appear here before the workshop.
A guide to installing the prerequisites can be found at github.com/benclifford/hx2018-prereq
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Ben's career has spanned supercomputing, distributed systems, and programming languages, and taken him all across the world from Los Angeles to Johannesburg. Most recently he has been based in London taking Haskell work where he can find it.