Tom Brewe nylki

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.~~

Using Atom on Fedora 20

This guide walks you through the steps of building and launching the Atom text editor on Fedora 20.

Building Atom

Install prerequisite packages

Anchors in Markdown

To create an anchor to a heading in github flavored markdown. Add - characters between each word in the heading and wrap the value in parens (#some-markdown-heading) so your link should look like so:

[create an anchor](#anchors-in-markdown)

	// http://stackoverflow.com/questions/7279567/how-do-i-pause-a-window-setinterval-in-javascript

	function RecurringTimer(callback, delay) {
	var timerId, start, remaining = delay;

	this.pause = function() {
	window.clearTimeout(timerId);
	remaining -= new Date() - start;
	};

	#!/bin/sh


	if [ $# -eq 0 ]; then
	echo "This script creates self extractable executable"
	echo Usage: $0 TAR.GZ [COMMAND]
	exit;
	fi
	if [ $# -gt 0 ]; then
	TAR_FILE=$1

	static func loadFont(fontName: String, baseFolderPath: String) -> Bool {
	let basePath = baseFolderPath as NSString
	let fontFilePath = basePath.stringByAppendingPathComponent(fontName)
	let fontUrl = NSURL(fileURLWithPath: fontFilePath)
	if let inData = NSData(contentsOfURL: fontUrl) {
	var error: Unmanaged<CFError>?
	let cfdata = CFDataCreate(nil, UnsafePointer<UInt8>(inData.bytes), inData.length)
	if let provider = CGDataProviderCreateWithCFData(cfdata) {
	if let font = CGFontCreateWithDataProvider(provider) {
	if (!CTFontManagerRegisterGraphicsFont(font, &error)) {

	"""
	Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
	BSD License
	"""
	import numpy as np

	# data I/O
	data = open('input.txt', 'r').read() # should be simple plain text file
	chars = list(set(data))
	data_size, vocab_size = len(data), len(chars)

	// Promise.all is good for executing many promises at once
	Promise.all([
	promise1,
	promise2
	]);

	// Promise.resolve is good for wrapping synchronous code
	Promise.resolve().then(function () {
	if (somethingIsNotRight()) {
	throw new Error("I will be rejected asynchronously!");

	[Unit]
	Description=Multitouch und Wacom Treiber nach dem Aufwachen neustarten
	After=suspend.target

	[Service]
	Type=oneshot
	ExecStart=/sbin/modprobe -r hid_multitouch ; /sbin/modprobe hid_multitouch ; /sbin/modprobe -r wacom ; /sbin/modprobe wacom


	[Install]

	# GDC Vault videos can't be watched on mobile devices and this is a very sad thing indeed!
	# (Note: this has changed for GDC2013, which lets you watch raw MP4 streams. Kudos!)
	# This script is designed to circumvent this by downloading the lecture and slideshow
	# videos which can then be re-encoded into whatever format you wish. Obviously, you
	# won't be able to do this without access to the Vault. This is strictly for the
	# convenience of legitimate Vault users!

	# Note: this code is rather flimsy and was written as fast as possible for my own personal use.
	# The code only works for the most recent GDC Vault videos, since they all use the same player
	# format. If the XML format used to run the player is changed (as it has in the past), the code