jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

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
#

danielctull

#ifndef _DCT_WEAK_H
#define _DCT_WEAK_H

// Macros for portable support of notionally weak properties with ARC
// Forked  from https://gist.github.com/1354106
// Updated by Rowan James
// Available at https://gist.github.com/1530868
// Defines:
//	dct_weak		to be used as a replacement for the 'weak' keyword:
//						@property (dct_weak) NSObject* propertyName;

oxbowlakes

/**
 * Part Zero : 10:15 Saturday Night
 *
 * (In which we will see how to let the type system help you handle failure)...
 *
 * First let's define a domain. (All the following requires scala 2.9.x and scalaz 6.0)
 */

import scalaz._
import Scalaz._

arnolddevos

import Pattern._
import Family._

def pattern[B](pf: PartialFunction[Name,B]) = new Extractor(pf.lift)

val Parents = new Extractor(parents.get)
val Children = new Extractor(children.get)

"Julie" match {
  case Parents(p) => "Julies parents are: " + p