e000

##########################################################
# How to NEVER use Lambdas. An inneficient and yet educa-#
# tonal guide to the proper misuse of the lambda constru-#
# ct in Python 2.x.     [DO NOT USE ANY OF THIS EVER]    #
#                                   by: e000 (13/6/11)   #                 
##########################################################

## Part 1. Basic LAMBDA Introduction ##
# Well, it's worth diving straight into what lambdas are.
# Lambdas are pretty much anonymous "one line" functions

bdarnell

#!/usr/bin/env python
"""This is a demonstration of sharing file descriptors across processes.

It uses Tornado (need a recent post-2.0 version from github) and the
multiprocessing module (from python 2.6+).  To run it, start one copy
of fdserver.py and one or more copies of testserver.py (in different
terminals, or backgrounded, etc).  Fetch http://localhost:8000 and
you'll see the requests getting answered by different processes (it's
normal for several requests to go to the same process under light
load, but under heavier load it tends to even out).

lbolla

javascript:(function() {var s=document.createElement('script'); s.src="https://raw.github.com/gist/1303423/4859b59a423612c90ec5b0c77591f984c4dfdd07/add_reviewers.js"; document.getElementsByTagName('head')[0].appendChild(s);})()

ei-grad

from time import sleep

from tornado import gen
import tornado.ioloop
import tornado.web

from tornado_threaded import threaded, inline_threaded

@threaded
def slow_func(callback):

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!

devn

#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#

zyxar

/* Exercise: Loops and Functions #43 */
package main

import (
	"fmt"
	"math"
)

func Sqrt(x float64) float64 {
	z := float64(2.)

baoshan

# yum list \*openssl\*
yum install -y openssl098e
yum install -y zlib
ln -s /usr/lib64/libssl.so.0.9.8e /usr/lib64/libssl.so.0.9.8
ln -s /usr/lib64/libcrypto.so.0.9.8e /usr/lib64/libcrypto.so.0.9.8
ln -s /lib64/libbz2.so.1 /lib64/libbz2.so.1.0
wget https://bitbucket.org/pypy/pypy/downloads/pypy-1.8-linux64.tar.bz2
tar -xf pypy-1.8-linux64.tar.bz2
cp -r pypy-1.8 /opt
ln -s /opt/pypy-1.8/bin/pypy /usr/local/bin

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

jasonm23

(deftheme bubbleberry "bubbleberry")

;; Based on the theme used for LightTable (see: http://www.chris-granger.com/images/lightable/main.png )

(custom-theme-set-variables
 'bubbleberry
 '(linum-format " %7i ")
 '(fringe-mode 5 nil (fringe))
 '(powerline-color1 "#3d3d68")
 '(powerline-color2 "#292945")