s3cur3

# To use this check:
# 1. Add it to your project at `/lib/credo/disallow_unless.ex`
# 2. Add it to the list of `requires` in `.credo.exs`:
#
#    requires: ["lib/credo/disallow_unless.ex"], # <-- add file here
#
# Add the module to the list of `checks` within `.credo.exs`:
#
#    checks: [
#      {Credo.DisallowUnless}, # <-- add check here

s3cur3

defmodule AppServerWeb.Telemetry do
  require Logger

  @doc """
  Attaches an event handler to the "handled in" event on your Phoenix Channels.

  Call from within your application.ex initialization.
  """
  def attach_telemetry_handlers() do
    channel_handled_in = [:phoenix, :channel_handled_in]

s3cur3

name: Build and Test Elixir Server

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

s3cur3

# If you're here, I assume it's because you tried to run
# :observer for the first time on your Mac and discovered
# it won't work because of some obscure issue with wxwidgets
# (formerly known to Homebrew as wxmac).
#
# This script will fix it for you.

# 1. Remove the old and busted copy
brew uninstall wxwidgets --ignore-dependencies 

s3cur3

defmodule Greeter do
  use GenServer

  def start_link(opts) do
    name = Access.get(opts, :name, __MODULE__)
    GenServer.start_link(__MODULE__, name, name: name)
  end

  def greet(server \\ __MODULE__, name) do
    GenServer.call(server, {:greet, name})

s3cur3

my_user = User.start_link("Tyler", "abcd-efgh-1234-5678")

# Prints "Hi, I'm Tyler"
User.say_hello(my_user)

# Prints a process ID
IO.inspect(my_user)

# Prints the state data:
# %{name: "Tyler", id: "abcd-efgh-1234-5678"}

s3cur3

extension Dictionary {
    func mapKeys<NewKey>(_ transform: (Key) -> NewKey) -> [NewKey: Value] {
        reduce(into: [NewKey: Value]()) { result, item in
            result[transform(item.key)] = item.value
        }
    }
}

/// 🥤
extension Dictionary where Key: RawRepresentable {

s3cur3

#!/bin/bash

if git checkout "$1" ; then
  echo "No untracked files had to be deleted"
else
  git checkout "$1" 2>&1 > /dev/null | grep $'\t' | xargs rm
  git checkout "$1"
  echo "Deleted conflicting untracked files"
fi

s3cur3

defmodule MmoServer.WorldCache do
  @moduledoc "A cache of all aircraft in the world, intermittently updated for 'flight tracker' API usage"
  use GenServer
  require Logger
  import Appsignal, only: [set_gauge: 2]

  def start_link(_), do: GenServer.start_link(__MODULE__, %{}, name: __MODULE__)

  # Log a new connected user
  def put(%{session_id: sid, lon: lon, lat: lat} = acf) when is_integer(sid) do

s3cur3

defmodule ExplicitlyIgnoreReturnValues do
  @moduledoc """
  This is a horrifying hack.

  It is a complete copy & paste of Credo's stock unused_operation and unused_function_return_helper,
  but modified slightly to reverse the logic; instead of specifying modules and types to warn about when unused,
  we specify an "allow list" of the *only* modules & functions to allow ignoring.

  See original copypasta source here:
  https://github.com/rrrene/credo/blob/master/lib/credo/check/warning/unused_operation.ex