Learning Elm in 3 Days

ElmEurope 2018 presentation slides.

Transcript

1. Christopher Bertels bakkdoor Learning Elm in 3 Days Switching from JS & React to Elm for Syncrypt’s Desktop UI
2. I don’t normally do 
 much front-end coding
3. https://griffsgraphs.files.wordpress.com/2012/07/programming-languages_2.png
4. OO -> FP 
 Dynamic -> Static Stateful behavior, 
 implicit dependencies -> Pure functions, 
 explicit dependencies You do things differently over time
5. Syncrypt: A Short Summary ❖ File backup & synchronization service (like Dropbox), but: ❖ Encrypts & decrypts only client-side: ❖ All file contents (using AES-256 bit symmetric encryption) ❖ All file metadata, including: ❖ File name (using SHA-256 hash) ❖ File size (random padding) ❖ All vault metadata (vault = syncrypted folder) ❖ Signature-Chain / Vault revision history ❖ CLI & daemon written in Python ❖ GUI written in Elm ❖ FOSS (GPL) client to make crypto & security analysis easier
6. TLDR;
 A simple to use file storage & synchronization service that you don’t need to trust.
7. First some history
12. “And then I discovered Elm.” – Me, now
14. Slides about compiler errors helping with learning
15. Slides about strengths of Elm over JS/React/Redux
16. Elm’s Simplicity https://infi.nl/nieuws/why-i-became-an-elm-evangelist/
17. Example:
 UI Text Translation
25. But it didn’t start like that
31. After 3 days Json.Decode.Pipeline ftw!
32. Writing decoders forces you to really think about the structure of your data 
 and if it makes sense. I like decoders that are easy and obvious to read. => I like data structures for which it is easy to implement decoders
33. Elm can be fast
34. & Elm can be slow
35. Do these approaches make sense? Is this idiomatic Elm?
36. I’ve asked myself these questions. This is still my first Elm program, after all.
37. What I do know is that Elm has made it really easy for a newbie to the language to get productive within the first couple of days.
38. Related Links ❖ syncrypt.space ❖ github.com/syncrypt/desktop ❖ github.com/syncrypt/client ❖ twitter.com/syncrypt ❖ twitter.com/bakkdoor ❖ elm-tutorial.org
39. If you’re interested in trying out Syncrypt, You can sign up for the beta that’s starting soon. Also, please just talk to me here if you have any questions or feedback. https://syncrypt.space