Writing Command Line Applications in Elixir

Using Elixir to solve small problems.

Transcript

1. HELLO SEND(AUDIENCE, {:GREETING, “HELLO!”})
4. –interested programmer “I'd love to check out Elixir but I don't really have a problem that is big enough that Elixir is well suited for.”
6. MASSIVELY CONCURRENT DISTRIBUTED FAULT TOLERANT WEB SCALE FUNCTIONAL
7. PIPES |> PATTERN MATCHING |> MESSAGE PASSING |> IMMUTABILITY |> => {:OK, “ ☺”} ELIXIR OFFERS A DIFFERENT WAY TO THINK ABOUT AND SOLVE PROBLEMS OF ANY SIZE. !
9. WRITING COMMANDLINE APPS WITH ELIXIR
12. MIX
13. DEPENDENCIES Hex package Git/SCM Path Dependency tasks mix deps: “lists all deps and their status” mix deps.get “Get non installed dependencies” mix deps.compile mix deps.update mix deps.clean “Remove all dependency files” mix deps.unlock “Unlock dependencies”
15. UMBRELLA PROJECTS • Run tasks across apps • Run all your tests for apps in app_path • Run Applications in dependent order…
16. MIX TASKS
17. RUNNING OUR APPS MIX ESCRIPT.BUILD
21. BASIC IO
22. TESTING IO
23. IO.ANSI • escape_fragment(string, emit \\ terminal()) • “%{clear, home, green, bright} Welcome” • IO.red() IO.green() etc… • home() send the cursor home
24. FILES AND PATHS • File.open • File.close • File.read • binread/write utf8 and IO module • File.read vs File.read! • Path.join and Path.expand • Path.wildcard
25. PORT
26. BASIC USAGE
27. DEMO
28. SCALING UP COMMAND LINE APPS WITH TASKS & AGENTS
29. TASKS
30. AGENTS a simple abstraction around state
31. DEMO DEMO
32. THANK YOU