qingfeng

#!/usr/bin/env python
# encoding: utf-8
# Author: qingfeng@douban.com

from __future__ import with_statement
from optparse import OptionParser
import os

parser = OptionParser(version="new9 command v1.0 -- by qingfeng@douban.com")
parser.add_option("-p", "--install",

rduplain

Goal: Connect to MSSQL using FreeTDS / ODBC in Python.

Host: Ubuntu 11.10 x86_64

Install:

sudo apt-get install freetds-dev freetds-bin unixodbc-dev tdsodbc
pip install pyodbc sqlalchemy

In /etc/odbcinst.ini:

hrldcpr

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

hellerbarde

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

nateware

# Step 1: Set priveleges

$ sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -configure -allowAccessFor -allUsers -privs -all

Starting...
Setting allow all users to YES.
Setting all users privileges to 1073742079.
Done.

# Step 2: Allow VNC clients

olasitarska

# -*- coding: utf-8 -*-
"""
Builds epub book out of Paul Graham's essays: http://paulgraham.com/articles.html

Author: Ola Sitarska <ola@sitarska.com>
Copyright: Licensed under the GPL-3 (http://www.gnu.org/licenses/gpl-3.0.html)

This script requires python-epub-library: http://code.google.com/p/python-epub-builder/
"""

kachayev

-module(barber).
-export([run/2, barber/1, clients/1, simulator/2]).

-define(CUT_DUTAION, 20).

run(RoomSize, Duration) ->
    % create barber
    BPid = spawn(?MODULE, barber, [?CUT_DUTAION]),
    % run simulartor with barber PID
    SPid = spawn(?MODULE, simulator, [BPid, RoomSize]),

kachayev

package main

import (
    "fmt"
    "time"
    "math/rand"
)

const (
    CUTTING_TIME = 20

Macil

#include <tunables/global>
/usr/bin/skype {
  #include <abstractions/base>
  #include <abstractions/user-tmp>
  #include <abstractions/audio>
  #include <abstractions/nameservice>
  #include <abstractions/ssl_certs>
  #include <abstractions/fonts>
  #include <abstractions/ibus>
  #include <abstractions/dbus>

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000