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Get Mountain Lion and Homebrew to Be Happy

1) Install XCode 4.4 into /Applications

Get it from the App Store.

2) Install Command Line Tools

In XCode's Preferences > Downloads you can install command line tools.

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

Performance of Flask, Tornado, GEvent, and their combinations

Wensheng Wang, 10/1/11

Source: http://blog.wensheng.org/2011/10/performance-of-flask-tornado-gevent-and.html

When choosing a web framework, I pretty much have eyes set on Tornado. But I heard good things about Flask and Gevent. So I tested the performance of each and combinations of the three. I chose something just a little more advanced than a "Hello World" program to write - one that use templates. Here are the codes:

1, Pure Flask (pure_flask.py)

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

	import sys
	from gevent import server
	from gevent.baseserver import _tcp_listener
	from gevent.monkey import patch_all; patch_all()
	from multiprocessing import Process, current_process, cpu_count


	def note(format, *args):
	sys.stderr.write('[%s]\t%s\n' % (current_process().name, format%args))

	# zabbix_get.py : Python port of zabbix_get
	# http://www.zabbix.com/documentation/1.8/protocols/agent
	# http://www.zabbix.com/wiki/doc/tech/proto/zabbixagentprotocol

	import argparse
	import socket
	import struct
	import sys

	def str2packed(data):

	#!/usr/bin/env python
	#coding=utf-8
	#
	# Generate a list of dnsmasq rules with ipset for gfwlist
	#
	# Copyright (C) 2014 http://www.shuyz.com
	# Ref https://code.google.com/p/autoproxy-gfwlist/wiki/Rules

	import urllib2
	import re

	'Emulate max() as fully as possible in pure Python.'

	# https://stackoverflow.com/questions/69997857/implementation-of-max-function-in-python/69997876#69997876
	# https://github.com/python/mypy/issues/7231

	from typing import TypeVar, Any, Iterator, Iterable, Optional
	from typing import Union, Protocol, Callable, cast, Tuple, overload


	class SupportsGT(Protocol):

	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048