Luke, JunYuan Yan jyyan

Sass/Less Comparison

In this document I am using Sass's SCSS syntax. You can choose to use the indented syntax in sass, if you prefer it, it has no functional differences from the SCSS syntax.

For Less, I'm using the JavaScript version because this is what they suggest on the website. The ruby version may be different.

Variables

從 SocialCalc 到 EtherCalc

先前在《開源應用程式架構》一書中，我介紹了 SocialCalc 這個在瀏覽器中運行的試算表編輯器，以取代伺服器為中心的 WikiCalc 架構。SocialCalc 在瀏覽器中執行所有的運算，只有在載入和儲存試算表時才會使用伺服器。

追求效能是 Socialtext 團隊在 2006 年時設計 SocialCalc 的主要目的。重點在於：在 JavaScript 環境下執行客戶端運算，儘管在當年的速度僅有伺服器端 Perl 運算的十分之一，但仍然勝過 AJAX 來回傳輸資料造成的網路延遲：

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ACL / Roles + Permissions

https://github.com/djvirgen/virgen-acl Simple and elegant, create your own checks. No middleware?

https://github.com/OptimalBits/node_acl Use as middleware, create your own roles and access. Great choice.

https://github.com/tschaub/authorized Similar to connect roles... but a bit more robust? you can create roles and action, and associate many roles with that action

Manually building a tile server

This page describes how to install, setup and configure all the necessary software to operate your own tile server. The step-by-step instructions are written for Ubuntu Linux 12.04 LTS (Precise Pangolin), however they should transfer fairly straightforwardly to other versions of Ubuntu or Linux distributions.

##Software installation The OSM tile server stack is a collection of programs and libraries that work together to create a tile server. As so often with OpenStreetMap, there are many ways to achieve this goal and nearly all of the components have alternatives that have various specific advantages and disadvantages. This tutorial describes the most standard version that is also used on the main OpenStreetMap.org tile server.

This guide covers installation of osm2pgsql, loading a PostgreSQL/PostGIS database, and rendering tiles for an online webmap.The database can also be used to [develop stylesheets], or render data with other software.

Before starting you want t

	# DO NOT RESPOND TO REQUESTS OTHER THAN yourdomain.com
	server {
	listen 80 default;
	server_name _;
	return 444;
	}

	# FILE UPLOADS
	server {
	listen 80;

	#
	# Wide-open CORS config for nginx
	#
	location / {

	if ($request_method = 'OPTIONS') {

	add_header 'Access-Control-Allow-Origin' '*';

	#

	# Path to your oh-my-zsh configuration.
	export ZSH=$HOME/.oh-my-zsh

	# Set name of the theme to load.
	# Look in ~/.oh-my-zsh/themes/
	# Optionally, if you set this to "random", it'll load a random theme each
	# time that oh-my-zsh is loaded.
	export ZSH_THEME="lukerandall"

	# Set to this to use case-sensitive completion

	var crypto = require('crypto');

	var AESCrypt = {};

	AESCrypt.decrypt = function(cryptkey, iv, encryptdata) {
	encryptdata = new Buffer(encryptdata, 'base64').toString('binary');

	var decipher = crypto.createDecipheriv('aes-256-cbc', cryptkey, iv),
	decoded = decipher.update(encryptdata);

	/**
	* sprintf()
	*/
	(function() {
	define(function() {

	return function() {

	var convert = function(match, nosign) {
	if (nosign) {

	/*
	In the node.js intro tutorial (http://nodejs.org/), they show a basic tcp
	server, but for some reason omit a client connecting to it. I added an
	example at the bottom.

	Save the following server in example.js:
	*/

	var net = require('net');