Way Spurr-Chen wayspurrchen

General Background and Overview

Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
Models and Issues in Data Stream Systems
Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
[Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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#botally code of conduct

_{based on the #nodejs code of conduct by @izs}

tl;dr If you’re a mean butt you get kicked out. This is not negotiable.

Sexist, heteronormative, racist, and other offensive remarks are not allowed. (Cursing is allowed, but never targeting another user, and never in a hateful or sexually explicit manner.)
Remarks that make any of the ops go “Hm, that’s inappropriate”, whether on the above list or not: also not allowed.
You get a warning.
If the warning is not taken seriously, you might get a second sterner warning in PM, if you’re lucky, and the op is feeling generous, and this is the first time. But don’t count on that.

Transparent `boot2docker` on OS X

This is how you can autorun boot2docker on boot, so that you can use docker as you would on Linux, without ever* knowing that the daemon's not running locally.

Install VirtualBox & boot2docker (obviously)
Create a startup script with Automator
Put in /usr/local/bin/boot2docker up && /usr/local/bin/boot2docker shellinit > ~/.boot2docker-shellinit.sh
Add echo "export DOCKER_IP=$(boot2docker ip 2>/dev/null)" >> ~/.boot2docker-shellinit.sh if you want the non-standard but very-convenient DOCKER_IP env-var as well (thanks for the suggestion @city41!)
Update your .profile or equivalent file with source ~/.boot2docker-shellinit.sh
Reboot your machine

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	function keepTrying(otherArgs, promise) {
	promise = promise\|\|new Promise();

	// try doing the important thing

	if(success) {
	promise.resolve(result);
	} else {
	setTimeout(function() {
	keepTrying(otherArgs, promise);

	/* bling.js */

	window.$ = document.querySelectorAll.bind(document);

	Node.prototype.on = window.on = function (name, fn) {
	this.addEventListener(name, fn);
	};

	NodeList.prototype.__proto__ = Array.prototype;

	#!/bin/bash

	function test {
	MESSAGE=$1
	RECEIVED=$2
	EXPECTED=$3

	if [ "$RECEIVED" = "$EXPECTED" ]; then
	echo -e "\033[32m✔︎ Tested $MESSAGE"
	else