Phillipp Ohlandt PhillippOhlandt

How to Sell Elixir AGAIN (2023)

Presented by Evadne Wu at Code BEAM Lite in Stockholm, Sweden on 12 May 2023

Synopsis

We have celebrated 10 years of Elixir and also nearly 25 years of Erlang since the open source release in December 1998.

Most of the libraries that were needed to make the ecosystem viable have been built, talks given, books written, conferences held and training sessions provided. A new generation of companies have been built on top of the Elixir / Erlang ecosystem. In all measures, we have achieved further reach and maturity than 5 years ago.

New chats

Section

Doc at: https://kroki.io/examples.html#blockdiag

http://blockdiag.com/en/blockdiag/examples.html

Mix.install([

Neural network from scratch in ... Elixir

Pure Elixir initial version test

inputs = [1, 2, 3, 2.5]
weights = [0.2, 0.8, -0.5, 1.0]
bias = 2.0

Prelude

I. Preface and Motivation

This guide was written because I don't particularly enjoy deploying Phoenix (or Elixir for that matter) applications. It's not easy. Primarily, I don't have a lot of money to spend on a nice, fancy VPS so compiling my Phoenix apps on my VPS often isn't an option. For that, we have Distillery releases. However, that requires me to either have a separate server for staging to use as a build server, or to keep a particular version of Erlang installed on my VPS, neither of which sound like great options to me and they all have the possibilities of version mismatches with ERTS. In addition to all this, theres a whole lot of configuration which needs to be done to setup a Phoenix app for deployment, and it's hard to remember.

For that reason, I wanted to use Docker so that all of my deployments would be automated and reproducable. In addition, Docker would allow me to have reproducable builds for my releases. I could build my releases on any machine that I wanted in a contai

Sublime3, LSP and Elixir - notes

Experimenting with the Universal Language Server support for Sublime Text 3 plugin, available here and Elixir, using the Language Server Protocol.

Right now, and sadly, the LSP plugin doesn't include Elixir out of the box. A bit of copying some files around and editing, is still required. I am focusing on OSX only, in this note.

Prerequisites

Install the following:

	defmodule MyAppWeb.Intl do
	@moduledoc """
	Loads internationalization info from socket.
	"""
	import Phoenix.LiveView

	def on_mount(:default, _params, _session, socket) do
	cparams = get_connect_params(socket)

	{:cont,

	defmodule MasterProxy.Application do

	alias MyApp.Endpoint, as: MyAppEndpoint
	alias MyApp.UserSocket, as: MyAppUserSocket
	alias MyOtherApp.Endpoint, as: MyOtherAppEndpoint
	alias MyOtherApp.UserSocket, as: MyOtherAppUserSocket

	alias Phoenix.LiveReloader.Socket, as: LiveReloadSocket
	alias Plug.Cowboy

	defmodule Helper do

	# Helper function for setting values deep in a map.
	# Thanks @michalmuskala!
	# https://elixirforum.com/t/put-update-deep-inside-nested-maps-and-auto-create-intermediate-keys/7993/8

	@doc """
	Will set value at for keys deep inside data.

	iex> Helper.put_in_deep(%{a: %{}}, [:a, :b, :c], 42)

	defmodule Boydm.Utilities.Map do

	#============================================================================
	# similar to List.meyers_difference, the below code compares two maps
	# and generates a list of actions that can be applied to the first map
	# to transform it into the second map.

	#--------------------------------------------------------
	def difference(map_1, map_2) when is_map(map_1) and is_map(map_2) do
	# remove any keys from map_1 that are simply not present (at all) in map_2


	#
	# Checkout: WithExample.inverse_with
	#
	defmodule WithExample do

	# Helper functions
	def ok(result), do: {:ok, result}
	def error(error), do: {:error, error}