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require IEx; IEx.pry()

• Exit pry session inside an IEx session

  • respawn

• pry in test suite

  • iex -S mix test --trace

• Official docs

  • https://github.com/elixir-lang/elixir/blob/master/lib/iex/lib/iex.ex

• Debugging in views, tests, etc

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Mapping.create_destination()

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docker-compose web mix run priv/repo/seeds.exs

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Atlas.Mapping.CSVUtil.csv_row_to_table_record("priv/repo/data/destinations.csv")

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defmodule Atlas.Mapping.CSVUtil do
  @moduledoc """
    Utility module to ingest `destination.csv`
  """

  alias NimbleCSV.RFC4180, as: CSV
  alias Atlas.{Mapping, Mapping.Destination, Repo}

  def csv_row_to_table_record(file) do
    column_names = get_column_names(file)

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row["longitude"]

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defp create_or_skip(row) do
  case Repo.get_by(Destination,
            latitude: row["latitude"],
            longitude: row["longitude"]
          ) do
      nil ->
        Mapping.create_destination(%{
          longitude: Decimal.new(row["longitude"]),
          latitude: Decimal.new(row["latitude"]),
          name: row["name"],

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|> create_or_skip()

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%{
  "allows_dogs" => "true",
  "backpack_camp" => "true",
  "car_camp" => "false",
  "car_friendly" => "true",
  "description" => "Rumors of big fish, probably early in season. ~ 2.5 hr hike. Latest notes: 20190909",
  "dogs_off_leash" => "true",
  "fee" => "false",
  "greater_than_three_hours" => "false",
  "hike_in" => "true",

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|> Map.new(fn {val, num} -> {column_names[num], val} end)