The document discusses the Elm programming language and its features such as functional programming concepts, including immutable data, first-class functions, and pure functions. It also mentions the Elm architecture and provides a simple 'Hello, World!' example. The text reflects the author's personal views and includes a light-hearted tone throughout.

1. Elm:functionalprogramming
inyourbrowser
AlexTroush

2. Disclaimer
Trolling is a part of show and
not (mostly!) reflect the
opinion of the author

4. FunctionConceptsyouneedtoknownow
Immutable data
First-class functions
Pure Functions
Recursion

5. Elmhelloworld
import Html exposing (span, text)
import Html.Attributes exposing (class)
main =
span [class "welcome-message"] [text "Hello, World!"]

6. HtmlASaFUNCTION
ma

7. Types

8. Types

9. Types

10. ElmArchitecture

11. MODEL->UPDATE->VIEW

12. 1billiondollar
application

13. GIFLOADINGAPP
Cats

14. model

15. VIEW

16. UPDATE

17. Addingcoolstuff

18. UPDATE

19. HTTPSTUFF

21. Tooling

22. ELMSEXYERRORMESSAGES
foo = List.nap

26. Elmelmelm
Thankyouall!Followme@troush69