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# Original source from http://asyncio.readthedocs.io/en/latest/producer_consumer.html
# Rewritten for Python >=3.4

import asyncio
import random


@asyncio.coroutine
def produce(queue, n):
    for x in range(n):

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How to install OpenCV 3.1 on Ubuntu 14.04 64bits

Update latest packages and installed

$ sudo apt-get update
$ sudo apt-get upgrade

apt-get update - 更新最新的套件資訊 apt-get upgrade - 更新套件

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# Open CV 3


sudo apt-get -y install libtiff5-dev
 
sudo apt-get -y install libavcodec-dev libavformat-dev libswscale-dev libdc1394-22-dev
sudo apt-get -y install libxine2-dev libv4l-dev
sudo apt-get -y install libgstreamer0.10-dev libgstreamer-plugins-base0.10-dev
sudo apt-get -y install qt5-default libgtk2.0-dev libtbb-dev
sudo apt-get -y install libatlas-base-dev

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Install Terminator (shell)

sudo add-apt-repository ppa:gnome-terminator
sudo apt-get update
sudo apt-get install terminator

Terminator should be setup as default now. Restart your terminal (shortcut: "Ctrl+Alt+T").

Install ZSH

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How to: Allow Node to bind to port 80 without sudo

TL;DR

Only do this if you understand the consequences: all node programs will be able to bind on ports < 1024

sudo setcap 'cap_net_bind_service=+ep' /usr/local/bin/node

Important: your node location may vary. Use which node to find it, or use it directly in the command:

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Python Socket 编程详细介绍

Python 提供了两个基本的 socket 模块：

• Socket 它提供了标准的BSD Socket API。
• SocketServer 它提供了服务器重心，可以简化网络服务器的开发。

下面讲解下 Socket模块功能。

Socket 类型

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Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Scaling Twitter: Making Twitter 10000 Percent Faster
• Scaling Twitter
• Blaine Cook on Scaling Twitter - YouTube

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#!/usr/bin/env python
# Knuth-Morris-Pratt demonstration
# Kyle Gorman <kgorman@ling.upenn.edu>
#
# A naive Python implementation of a function that returns the (first) index of
# a sequence in a supersequence is the following:

def subsequence(needle, haystack):
    """
    Naive subsequence indexer; None if not found

chairco

#include <Python.h> // Must be first
#include <vector>
#include <stdexcept>
#include "PyUtils.h"
using namespace std;

// =====
// LISTS
// =====

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