christian-oudard

import re
from hashlib import md5

def gfm(text):
    # Extract pre blocks.
    extractions = {}
    def pre_extraction_callback(matchobj):
        digest = md5(matchobj.group(0)).hexdigest()
        extractions[digest] = matchobj.group(0)
        return "{gfm-extraction-%s}" % digest

x-Code-x

#Quick cp from http://sekati.com/etc/install-nodejs-on-debian-squeeze
#
#Needed to install TileMill from MapBox
#
#Installs node.js which has npm bundled
#

#Build Dependencies

sudo apt-get update && apt-get install git-core curl build-essential openssl libssl-dev

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