Dustin Falgout lots0logs

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

~~Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.~~

What is the difference between Cerebral and Redux?

Cerebral and Redux were built to solve different problems

Redux was developed to achieve hot reloading global state and state changing logic. To achieve that it was necessary for state changes to be run with pure functions and the state has to be immutable. Now you can change the logic inside your reducer and when the application reloads Redux will put it in its initial state and rerun all the actions again, now running with the new state changing logic.

Cerebral had no intention of achieving hot reloading. Cerebral was initially developed to give you insight into how your application changes its state, using a debugger. In the Redux debugger you see what actions are triggered and how your state looks after the action was handled. In Cerebral you see all actions fired as part of a signal. You see asynchronous behaviour, paths taken based on decisions made in your state changing flow. You see all inputs and outputs produced during the flow and you even

See https://git.gnome.org/browse/gtk+/tree/gtk/gtkcssstylepropertyimpl.c?h=gtk-3-8#n878 and https://git.gnome.org/browse/gtk+/tree/gtk/gtkcssstyleproperty.c?h=gtk-3-8#n272

Ani = Property can be animated Inh = Property inherits from parent widget

Property name	Type	Default	Ani	Inh	Notes
`animation`					Sets all `animation-*` properties except `animation-play-state`; specify iteration count first, then duration, then delay
`animation-delay`	array(time)	`0`	N	N
`animation-direction`	array(direction)	`normal`	N	N

Example OS X daemon: http://stackoverflow.com/a/9523030
Library for simplifying daemon creation: https://github.com/serverdensity/python-daemon/blob/master/daemon.py

Once a daemon is running, I need some way of communicating with it. That's where Pyro comes in. (I briefly considered running an HTTP server, but the HTTP protocol was designed to handle resources, not remote procedure calls (RPC). Plus, the overhead of an HTTP server, URL handling, and JSON parsing compared to a lightweight Pyro daemon was too much to justify if my plans were to only interact with the daemon over SSH.)

Example Pyro daemon

Example taken from http://stackoverflow.com/questions/24461167/how-can-i-cleanly-exit-a-pyro-daemon-by-client-request. (My test did not demonstrate the hangs that the OP was experiencing.)

server.py:

Proof of concept setup for Wordpress running under PHP-FPM with an Nginx frontend

Usage

Build a copy of this image:

git clone git://github.com/d9206eacb5a0ff5d6be0.git docker-nginx-fpm
cd docker-nginx-fpm
docker build -t nginx-fpm .

	# fromhex A52A2A
	# fromhex "#A52A2A"
	# BLUE_VIOLET=$(fromhex "#8A2BE2")
	# http://unix.stackexchange.com/a/269085/67282
	function fromhex() {
	hex=$1
	if [[ $hex == "#"* ]]; then
	hex=$(echo $1 \| awk '{print substr($0,2)}')
	fi
	r=$(printf '0x%0.2s' "$hex")

	# Copyright (C) 2015 Patrick Griffis <[email protected]>
	# Copyright (C) 2014 Christian Hergert <[email protected]>
	#
	# This program is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful, but
	# WITHOUT ANY WARRANTY; without even the implied warranties of

	"""Demonstrate the features"""

	from pep487 import init_subclasses, noconflict

	class Demo(init_subclasses):
	def __init_subclass__(cls, ns, **kw):
	print((cls, ns, kw))
	super().__init_subclass__(cls, ns, **kw)

	# The above doesn't print anything, since it's not a subclass of itself

	'use strict';

	/**
	* Created by Alexander Litvinov
	* Email: [email protected]
	* May be freely distributed under the MIT license
	*/

	let singleton = Symbol();
	let singletonEnforcer = Symbol();

	import json
	import os

	import requests


	GITHUB_TOKEN = os.environ.get('GITHUB_TOKEN')
	if GITHUB_TOKEN is None:
	raise Exception('Missing GITHUB_TOKEN from os.environ')