wess

#define SINGLETON(classname)                \
+(classname *)instance {                    \
    static dispatch_once_t onetime;         \
    static classname *shared = nil;         \
    dispatch_once(&onetime, ^{              \
        shared = [[classname alloc] init];  \
    });                                     \
    return shared;                          \
}

blakewatters

Now that the GateGuru team has been developing on the iOS 5 SDK for awhile, I thought I'd pull together some lessons learned.

• Declare your IBOutlet and IBActions within the private category within your implementation file. This makes them visible to interface builder without cluttering up the external interfaces and leaking implementation details.
• Declare your IBOutlet properties as (nonatomic, weak). The weak reference implies a non-owning reference and ARC will nil it as necessary.
• Delegate properties should be (nonatomic, weak) as well.
• The designated initializer for UIView's is initWithFrame: when initialized programmatically. When loaded from a Storyboard or custom Nib, it is initWithCoder:
• The designated initializer for UIViewController's is initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil when initialized programmatically. It is initWithCoder: when loaded from a Storyboard or Nib.

zbowling

Year	Days	Announcement	Day	Start of WWDC	Venue	
2012	??	?????????	???	11-Jun-12???	Moscone West	
2011	70	28-Mar-11	Mon	06-Jun-11	Moscone West	
2010	40	28-Apr-10	Wed	07-Jun-10	Moscone West	
2009	74	26-Mar-09	Thu	08-Jun-09	Moscone West	
2008	88	13-Mar-08	Thu	09-Jun-08	Moscone West	
2007	126	05-Feb-07	Mon	11-Jun-07	Moscone West	
2006	153	07-Mar-06	Tue	07-Aug-06	Moscone West	
2005	111	15-Feb-05	Tue	06-Jun-05	Moscone West	
2004	123	26-Feb-04	Thu	28-Jun-04	Moscone West	

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

motionbug

#!/bin/bash -ex

# Mount disk image on temp space
mountpoint=`hdiutil attach -mountrandom /tmp -nobrowse googlechrome.dmg | awk '/private\/tmp/ { print $3 } '`
echo Mounted on $mountpoint

# Determine version number
version=`defaults read "$mountpoint/Google Chrome.app/Contents/Info.plist" CFBundleShortVersionString`
echo Google Chrome version $version

DrewDahlman

window.onkeydown = function(event){
			keyboard.press(event.keyCode);
		}

	}());
var $panes = $(".waypoint").length-1;
var $currentPane = $(".waypoint").first();
var keyboard = {
		press:function(keycode){
			console.log(keycode);

kaorimatz

#!/bin/sh

CSCOPE_OUT_DIR=$HOME/.cscope
CTAGS_OUT_DIR=$HOME/.tags
NAMEFILE=/tmp/java.files

if [ $# != 1 ]; then
  echo "usega: $0 project_dir"
  exit 1
fi;

fousa

+ (MyClass *)sharedInstance {
    static dispatch_once_t _predicate;
    static MyClass *_sharedInstance = nil;
    
    dispatch_once(&_predicate, ^{
        _sharedInstance = [self new];
    });
    
    return _sharedInstance;
}

jake7864

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

kenota

package com.binarybuffer.test.bufferbuilder;

import org.apache.commons.math3.stat.descriptive.StatisticalSummary;
import org.apache.commons.math3.stat.descriptive.SummaryStatistics;
import org.junit.Test;



/**
 * Unit test for simple App.