Ali Ukani ali

Some exercises from the Falsy Values workshops.

The good parts:

HTTP server and client in same script
Express cookies example
Express routing example
Express error handling
Express middlewares example
Simple HTTP proxy

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = [email protected]:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

	<html>
	<head>
	<title>Chat</title>
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
	<script>
	$(function () {
	function check () {
	$("#output").load('/update', function () {
	setTimeout(check, 1);
	});

	# Usage: show <local-port> <subdomain>
	function show() {
	DOMAIN=".tekacs.com"
	REMOTE="$2$DOMAIN"
	ssh -tR 1080:127.0.0.1:$1 vps "sudo ssh -Nl \$USER -L $REMOTE:80:127.0.0.1:1080 localhost"
	}

	##########################################################
	# How to NEVER use Lambdas. An inneficient and yet educa-#
	# tonal guide to the proper misuse of the lambda constru-#
	# ct in Python 2.x. [DO NOT USE ANY OF THIS EVER] #
	# by: e000 (13/6/11) #
	##########################################################

	## Part 1. Basic LAMBDA Introduction ##
	# Well, it's worth diving straight into what lambdas are.
	# Lambdas are pretty much anonymous "one line" functions

	From: Chris DeSalvo <[email protected]>
	Subject: Why we can't process Emoji anymore
	Date: Thu, 12 Jan 2012 18:49:20 -0800
	Message-Id: <[email protected]>

	--Apple-Mail=_6DEAA046-886A-4A03-8508-6FD077D18F8B
	Content-Transfer-Encoding: quoted-printable
	Content-Type: text/plain;
	charset=utf-8

	#!/usr/bin/env sh

	##
	# This is script with usefull tips taken from:
	# https://github.com/mathiasbynens/dotfiles/blob/master/.osx
	#
	# install it:
	# curl -sL https://raw.github.com/gist/2108403/hack.sh \| sh
	#