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

gasman

#!/usr/bin/env ruby -w

# pnginator.rb: pack a .js file into a PNG image with an HTML payload;
# when saved with an .html extension and opened in a browser, the HTML extracts and executes
# the javascript.

# Usage: ruby pnginator.rb input.js output.png.html

# By Gasman <http://matt.west.co.tt/>
# from an original idea by Daeken: http://daeken.com/superpacking-js-demos

dannygarcia

{
	"jshint_options" :
	{
		"adsafe":   false,
		"bitwise":  false,
		"newcap":   true,
		"eqeqeq":   true,
		"immed":    true,
		"nomen":    false,
		"onevar":   true,

erikh

#!/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
#

jteso

from django.conf import settings
from django.http import HttpResponseRedirect

import re

class RequireLoginMiddleware(object):
    def __init__(self):
        self.urls = tuple([re.compile(url) for url in settings.LOGIN_REQUIRED_URLS])
        self.require_login_path = getattr(settings, 'LOGIN_URL', '/accounts/login/')
    

RedBeard0531

// derived from http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#Parallel_algorithm

function map() {
    emit(1, // Or put a GROUP BY key here
         {sum: this.value, // the field you want stats for
          min: this.value,
          max: this.value,
          count:1,
          diff: 0, // M2,n:  sum((val-mean)^2)
    });

axelav

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T	go to file
⌘⌃P	go to project
⌘R	go to methods
⌃G	go to line
⌘KB	toggle side bar
⌘⇧P	command prompt

alotaiba

Google Speech To Text API

Base URL: https://www.google.com/speech-api/v1/recognize
It accepts POST requests with voice file encoded in FLAC format, and query parameters for control.

Query Parameters

client
The client's name you're connecting from. For spoofing purposes, let's use chromium

lang
Speech language, for example, ar-QA for Qatari Arabic, or en-US for U.S. English

eykd

*.pyc
bin/
include/
lib/

marioBonales

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

# don't put duplicate lines in the history. See bash(1) for more options
# ... or force ignoredups and ignorespace
HISTCONTROL=ignoredups:ignorespace