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defmodule Foo do
  
  defp make_guard(:any), do: true
  defp make_guard(token) do
    quote do
      head == token
    end
  end
  

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defp table_action("create"), do: table_create("authors")
defp table_action("destroy"), do: table_drop("authors")


def authors(cd) do

      #Connect to the database.
      conn = RethinkDB.connect([host: "10.0.0.30", port: 28015])

      q = table_action(cd) |> run(conn)

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def authors(cd) do

      #Connect to the database.
      conn = RethinkDB.connect([host: "10.0.0.30", port: 28015])
      q = case cd do
        "create" -> table_create("authors")
        "destroy" -> table_drop("authors")
      end
      |> run(conn)

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#!/bin/bash

timestamp() {
  date +%s%3N
}


watch_dir=$1

echo "Watching $watch_dir ..."

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<kml:kml xmlns:kml="http://earth.google.com/kml/2.1">
  <kml:Document id="featureCollection">
    <Folder id="???">
      <Placemark id="fid-7adab59e_14f666dec01_-7f70">
        <ExtendedData>
          <SchemaData>
            <SimpleData name="an_int">1</SimpleData>
            <SimpleData name="a_string">1</SimpleData>
            <SimpleData name="a_float">1.1</SimpleData>
          </SchemaData>

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def(at(<<var!(head) :: binary - size(2), rest :: binary>>, ptr, meta) when ptr >= 8 and ptr <= 9) do
  new_posn = ptr + 2
  case({:meta, {:header_length, head}}) do
    {:halt, _} = halt ->
      halt
    {:meta, {key, val}} ->
      {rest, new_posn, Dict.put(meta, key, val), []}
    result ->
      {rest, new_posn, meta, [result]}
  end

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00:47:26.460 [error] GenServer #PID<0.276.0> terminating
** (Poison.EncodeError) unable to encode value: {nil, "user"}
    (poison) lib/poison/encoder.ex:339: Poison.Encoder.Any.encode/2
    (poison) lib/poison/encoder.ex:213: anonymous fn/4 in Poison.Encoder.Map.encode/3
    (poison) lib/poison/encoder.ex:214: Poison.Encoder.Map."-encode/3-lists^foldl/2-0-"/3
    (poison) lib/poison/encoder.ex:214: Poison.Encoder.Map.encode/3
    (poison) lib/poison/encoder.ex:213: anonymous fn/4 in Poison.Encoder.Map.encode/3
    (poison) lib/poison/encoder.ex:214: Poison.Encoder.Map."-encode/3-lists^foldl/2-0-"/3
    (poison) lib/poison/encoder.ex:214: Poison.Encoder.Map.encode/3
    (poison) lib/poison/encoder.ex:213: anonymous fn/4 in Poison.Encoder.Map.encode/3

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defimpl Poison.Encoder, for: Usic.User do
  @attributes ~W(id email inserted_at updated_at)a

  def encode(song, _options) do
    song
    |> Map.take(@attributes)
    |> Poison.encode!
  end
end

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defmodule KVStore do
  use GenServer
  
  # This executes within the supervisor or whoever starts the KVStore
  def start_link do
    # First arg is the callback module (this module)
    # The name arg registers the process globally as `KVStore`, essentially making it a singleton
    GenServer.start_link(KVStore, [], name: KVStore)  
  end
  

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