peerreynders’s gists

peerreynders / biz-card.mjs

Last active April 2, 2019 18:39

Web Components in Action v6: 7.5 Entering the Shadow DOM with Slots (p.152)

	// file: components/biz-card/biz-card.mjs
	import { patchContentMap } from '../../helpers/templateLoader.mjs'

	/*
	#1:
	See patchContentMap call below which creates
	static get _contentMap
	static set _templateUri

	#2:

peerreynders / index.html

Last active March 30, 2019 00:54

Web Components in Action v6: 5.2.1 Creating a Musical Instrument with Web Components and JS Modules

	<html>
	<head>
	<!--
	file: index.html
	https://livebook.manning.com/#!/book/web-components-in-action/chapter-5/v-6/comment-487548
	https://github.com/bengfarrell/webcomponentsinaction
	-->
	<title>Web Harp</title>
	<link href="./main.css" type="text/css" rel="stylesheet">
	<link href="./csshake.min.css" type="text/css" rel="stylesheet">

peerreynders / index.html

Created March 24, 2019 18:37

Web Components in Action v5; Chapter 2 Your First Web Component: MyCustomTag using in page template element

	<html lang="en">
	<!-- file: index.html -->
	<head>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>Chapter 2: Your First Web Component</title>
	<style>
	my-custom-tag {
	background-color: blue;
	padding: 20px;
	display: inline-block;

peerreynders / code_lock.ex

Created January 3, 2019 21:02

Erlang gen_statem OTP design principles "handle_event_function" callback mode revised example "translated" to Elixir

	# file: code_lock.ex
	# Translated from: http://erlang.org/doc/design_principles/statem.html#example-revisited
	# callback mode: :handle_event_function
	#
	defmodule CodeLock do
	@behaviour :gen_statem
	@name :code_lock_2

	def start_link(code),
	do: :gen_statem.start_link({:local, @name}, __MODULE__, code, [])

peerreynders / code_lock.ex

Created January 3, 2019 20:57

Erlang gen_statem OTP design principles "state_functions" callback mode revised example "translated" to Elixir

	# file: code_lock.ex
	# Translated from: http://erlang.org/doc/design_principles/statem.html#example-revisited
	# callback mode: :state_functions
	#
	defmodule CodeLockCommon do
	# Admittedly gratuitous use of a macro
	#
	def handle_event(:cast, {:down, button}, data) do
	{:keep_state, Map.put(data, :button, button)}
	end

peerreynders / pushbutton.ex

Created January 3, 2019 20:53

Erlang gen_statem module documentation "handle_event_function" callback mode example "translated" to Elixir

	# file: pushbutton.ex
	# Translated from: http://erlang.org/doc/man/gen_statem.html#example
	# callback mode: :handle_event_function
	# i.e. one callback function handle_event/4 for all states
	#
	defmodule Pushbutton do
	@behaviour :gen_statem

	# The registered server name
	defp name(),

peerreynders / pushbutton.ex

Created January 3, 2019 20:48

Erlang gen_statem module documentation "state_functions" callback mode example "translated" to Elixir

	# file: pushbutton.ex
	# Translated from: http://erlang.org/doc/man/gen_statem.html#example
	# callback mode: :state_functions
	# i.e. one callback function per state, so the each possible
	# state has to be represented as a bare atom which directly
	# identifies the module function to be called (:gen_fsm like).
	#
	# This example has two states :on and :off.
	# Therefore there is an on/3 and an off/3 callback function.
	#

peerreynders / from_pipe.ex

Created December 18, 2018 21:46

Elixir port using named pipe via UNDOCUMENTED open_port/2 functionality

	defmodule FromPipe do
	#
	# NOTE: this use of ports is based on UNDOCUMENTED functionality
	# of the open_port/2 function - i.e. could stop working
	# in any future release
	# http://erlang.org/doc/man/erlang.html#open_port-2
	#
	# See also:
	# Erlang and Named Pipes
	# https://gist.github.com/jaredmorrow/1c342c6e9156eddd20b2

peerreynders / from_pipe.ex

Last active March 29, 2023 18:36

Elixir port using named pipe with releasing script

	defmodule FromPipe do
	#
	# Use a helper script "from_pipe_release" to
	# release/request each line read from the
	# named pipe - effectively implementing a
	# crude backpressure mechanism
	#
	@pipe_name "/tmp/testpipe"
	@from_pipe_release "./from_pipe_release"
	@from_pipe_clean "./from_pipe_clean"

peerreynders / from_pipe.ex

Created December 18, 2018 21:26

Elixir port using named pipe with forwarding script

	defmodule FromPipe do
	#
	# Use a helper script "from_pipe_forward" to communicate
	# contents from the named pipe to the port
	#
	@pipe_name "/tmp/testpipe"
	@from_pipe_forward "./from_pipe_forward"
	@from_pipe_clean "./from_pipe_clean"

	# * terminate potential zombie OS process