Siva byteshiva

WebAssembly kickstart guide

Rolling your own compiler

One of the premises of WebAssembly is to support compiling multiple languages to WebAssembly.

C/C++

Building

via: http://www.webupd8.org/2011/05/install-firefox-nightly-from-ubuntu-ppa.html

Add the Mozilla Daily PPA (available for Ubuntu 11.04, 10.10 and 10.04) and install Firefox Nightly using the commands below:

$ [sudo] add-apt-repository ppa:ubuntu-mozilla-daily/ppa
$ [sudo] apt-get update
$ [sudo] apt-get install firefox-trunk

Since this is a daily builds PPA, it's nowhere near stable so use it at your own risk!

Deploying a subfolder to GitHub Pages

Sometimes you want to have a subdirectory on the master branch be the root directory of a repository’s gh-pages branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master branch alongside the rest of your code.

For the sake of this example, let’s pretend the subfolder containing your site is named dist.

Step 1

Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).

	### JHW 2018
	import numpy as np
	import umap



	# This code from the excellent module at:
	# https://stackoverflow.com/questions/4643647/fast-prime-factorization-module

	import random

	<html>
	<head>
	<title>DevTools Test</title>
	</head>
	<body>
	<script>
	if ('serviceWorker' in navigator) {
	navigator.serviceWorker.register('sw.js');
	// Wait until the SW has taken control of the page before inserting the <script> elements.
	// That way we can be sure the SW's fetch handler will intercept them.

	{
	"firebase": "my-awesome-app",
	"rewrites": [ {
	"source": "**",
	"destination": "/index.html"
	} ],
	"headers": [ {
	"source" : "*/.html",
	"headers" : [ {
	"key" : "Cache-Control",

	// === Arrays

	var [a, b] = [1, 2];
	console.log(a, b);
	//=> 1 2


	// Use from functions, only select from pattern
	var foo = () => [1, 2, 3];

	// Good
	exports.sendEmail = functions.auth.user().onCreate(event => {
	const mailgun = require('mailgun-js');
	// ...
	});


	// Not As Awesome
	const mailgun = require('mailgun-js');
	exports.sendEmail = functions.auth.user().onCreate(event => {

	// Client-side code, in my case a web browser
	firebase.auth().onAuthStateChanged(function (user) {
	this.user = user; // Set my local copy of the 'user' object
	if (user) {
	this.displayName = user.displayName;
	this.photoURL = user.photoURL;
	var userRef = firebase.database().ref('queues/login').child(user.uid);

	userRef.remove()
	.then(function () {

	const function = require('firebase-functions');

	functions.database.ref('queues/login/{uid}').onWrite(event => {
	const config = functions.config();
	// functions.config() returns your environment variables.
	// In this case I have an array of my admin users' email addresses in accessControlLists.adminUsers
	// It looks like ['chris@chrisesplin.com', 'some-other-admin@chrisesplin.com']
	const adminUsersString = config.['access-control-lists']['admin-users'];
	const adminUsers = adminUsersString.split(',');
	const user = event.data.val();