vamdt vamdt

Mandelbrot in SCSS

The mandelbrot algorithm in SCSS.

mathclub是最近做的一个个人项目，帮助考SAT的同学通过在线做题、回顾、问答提高成绩。用户功能有：计次/计时做题、成绩单、错题分布、错题回顾、提问、汇总以及注册登录。管理后台主要是题库管理、学员管理、成绩单管理、问题回复。怎么看都像学校里的课设，的确项目本身并不出奇，开发上选用的一些方案或许更有意思。

整个项目一个人从产品需求、原型设计、前后端开发到部署历时2周左右。可以从截图上感受一下：

技术选型上服务端是Node.js，应用框架选了老牌的Express（4.x变化挺大不少中间件都废了），数据服务用的是MongoLab（MongoDB的云服务平台），图片上传用的是又拍云，程序部署在Nodejitsu上。模板引擎没选主流的Jade或ejs，而是用Express React Views它实现了在服务端渲染React组件。前端框架是用React，这次有意想追求前后端全部组件化的组织。之前是用Webpack实现CommonJS模块打包，这次用Browserify配置更简单，它有丰富的transform很赞，其中的reactify转换React的JSX很完美。CSS用Sass＋autoprefixer让人省心。将这一切串起来的自动构建工具是Gulp。我其实崇尚用最精简的工具组合开发，上述组合在我看来比较精简了。（帖纸留念）

![image](http://satexam.b0.upaiyu

Thoughts about Rails Presenters

This is a collection of links, examples and rants about Presenters/Decorators in Rails.

The "Decorator" pattern slowly started gaining popularity in Rails several years ago. It is not part of core Rails, and there's many different interpretations about how it should work in practice.

Jay Fields wrote about it in 2007 (before he switched back to Java and then Clojure): http://blog.jayfields.com/2007/03/rails-presenter-pattern.html

如何在路由器中实现透明代理？

0 互联网现状

目前整个互联网环境，被破坏最严重地部分，是 Web 服务体验。当直接破坏难以实现时，就会从流程链的上下游着手，如：DNS 污染。

其它地互联网服务类型，例如：邮件，可能小部分会受到 Web 服务上下游破坏地余震，但整体上基本不受影响。

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Migrating From SVN to Git

This gist details the following:

Migrating from SVN to Git is roughly split into three steps:

Retrieve a list of SVN commit usernames

	good, 你已经有了一个自己的shadowsocks代理了，现在想要把这个代理公布出去给所有人分享。
	但是没有两个小时，代理就没法使用了，为什么？因为你需要额外注意以下事项（以下步骤需要比较高的linux技能）
	本文只关注于确保shadowsocks服务还“活着”，如果你希望让其跑得更快，请参考
	https://github.com/clowwindy/shadowsocks/wiki/Optimizing-Shadowsocks

	1、 shadowsocks的timeout设置
	超时时间越长，连接被保持得也就越长，导致并发的tcp的连接数也就越多。对于公共代理，这个值应该调整得小一些。推荐60秒。

	2、检查操作系统的各种限制
	对于openvz的vps，特别需要检查一下

	MIT License

	Copyright (c) <year> <copyright holders>

	Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE S

	server { listen 80;
	server_name example.com;
	access_log /var/log/example.com/nginx.access.log;
	error_log /var/log/example.com/nginx.error.log;
	root /var/www/apps/example.com/public;
	charset utf-8;

	location / {
	rewrite ^ https://$host$request_uri? permanent;
	}

	[program:tomcat6]
	command=/opt/tomcat6-instance/bin/supervisor-wrapper.sh