Elixir Sightseeing Tour

Transcript

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28. defmodule Hello do
    def world() do
    IO.puts("Hello world")
    end
    end
    

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31. map = %{"conf" => "ClojuTRE"}
    new_map = Map.put(map, "conf", "smallFP")
    Map.get(map, "conf")
    #=> "ClojuTRE"
    

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32. Enum.map([1, 2, 3], fn n -> n * 2 end)
    #=> [2, 4, 6]
    

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34. [first, _, "hello"] = my_list
    

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35. case some_expression do
    1 ->
    "it's one!"
    {_, _} ->
    "it's a 2-elem tuple!"
    _other ->
    "it's something else"
    end
    

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36. text |> send_email(to, cc)
    send_email(text, to, cc)
    

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38. send(
    set_status(
    put_cookie(
    set_session(
    add_cors_headers(request)
    ),
    cookie
    ),
    200
    )
    )
    

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39. request = add_cors_headers()
    request = set_session(request)
    request = put_cookie(request, cookie)
    request = set_status(request, 200)
    send(request)
    

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40. request
    |> add_cors_headers()
    |> set_session()
    |> put_cookie(cookie)
    |> set_status(200)
    |> send()
    

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46. spawn(fn ->
    IO.puts("I'm in another process!")
    IO.inspect(self())
    end)
    

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55. send(pid, "hello!")
    

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58. receive do

    message ->
    IO.puts("Received: #{message}")
    end
    

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61. send(dest_pid, {self(), {:add, 1, 7}})
    receive do
    {:add_response, response} ->
    IO.puts("Response: #{response}")
    end
    

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63. send(dest_pid, {self(), {:add, 1, 7}})
    receive do
    {:add_response, response} ->
    IO.puts("Response: #{response}")
    after
    1000 -> IO.puts("Timeout :(")
    end
    

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71. ref = Process.monitor(dest_pid)
    send(dest_pid, {self(), {:add, 1, 7}})
    receive do
    {:add_response, response} ->
    IO.puts("Response: #{response}")
    {:DOWN, ^ref, _, _, _} ->
    IO.puts("Process went down")
    after
    1000 -> IO.puts("Timeout :(")
    end
    

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88. quote do
    add(1, 2)
    end
    

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89. two_code = quote do
    1 + 1
    end
    quote do
    add(1, unquote(two_code))
    end
    

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90. if condition do
    expression
    end
    quote do
    case unquote(condition) do
    true -> unquote(expression)
    false -> nil
    end
    end
    

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