A series of exercises to get a feel for how generic types and type variables work in Elm.
For each of these, you are given some code that is not compiling. Your task is to get it
compiling. You can change the body of the function but not the signature. No cheating
with Debug.todo or infinite recursions either 😉
Brian van Burken brianvanburken
JoelQ
/ elm-generic-types-exercises.md
Last active
June 14, 2022 21:22
Short exercises to learn how generic types and type variables work in Elm.
There's a lot of type terminology and jargon going around when discussing types in Elm. This glossary attempts to list some of the most common type terms along with synonyms, terms from other language communities, examples, and links to more detailed articles on each topic.
evancz
/ data-interchange.md
Last active
April 29, 2024 16:53
Why do I have to write JSON decoders in Elm?
How do you send information between clients and servers? What format should that information be in? What happens when the server changes the format, but the client has not been updated yet? What happens when the server changes the format, but the database cannot be updated?
These are difficult questions. It is not just about picking a format, but rather picking a format that can evolve as your application evolves.
By now there are many approaches to communicating between client and server. These approaches tend to be known within specific companies and language communities, but the techniques do not cross borders. I will outline JSON, ProtoBuf, and GraphQL here so we can learn from them all.