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View BadExtensions.swift
import AVFoundation
import UIKit
class ViewController: UIViewController {
var discoverSession:MyDiscoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInDualCamera, .builtInWideAngleCamera, .builtInTelephotoCamera], mediaType: .video, position: .back)
@IBAction func didTapCrashButton(_ sender: Any) {
let devices = discoverSession.myDevices
print("Got devices: \(devices)")
View Storyboard Backed Extension
import UIKit
protocol StoryboardBacked:class {
static func newFromStoryboardWithName(name:String?, bundle:NSBundle?) -> Self
extension StoryboardBacked {
static func newFromStoryboardWithName(name:String?, bundle:NSBundle?) -> Self {
let realName = name ?? NSStringFromClass(self as AnyClass).componentsSeparatedByString(".").last!
let storyboard = UIStoryboard(name: realName, bundle: bundle)
View example.swift
typealias Callback = () -> ()
// Both methods are required
class Something {
var calledOnce:Callback?
var calledMultipleTimes:Callback?
sandofsky / gist:7134b1ff90d235901254
Created Feb 19, 2015
Example of fetching messages from Parse
View gist:7134b1ff90d235901254
class ViewController: UITableViewController {
var messages:[Message]?
var timer:NSTimer?
override func viewDidLoad() {
override func viewDidAppear(animated: Bool) {
View gist:fc65dde1a012a207eb9a
let delay = 2.0 * Double(NSEC_PER_SEC)
let time = dispatch_time(DISPATCH_TIME_NOW, Int64(delay))
dispatch_after(time, dispatch_get_main_queue(), {
sandofsky / gist:1004151
Created Jun 2, 2011
Alternatives to alias_method_chain
View gist:1004151
# Different ways to hook into an action
class ExampleAPI
def foo
puts "Foo"
# Option 1: alias_method_chain
class ExampleAPI
View gist:933270
javascript:(document.body.innerHTML = document.body.innerHTML.replace(/HTML5/g,"Java Applet"))
View threadtest.rb
require 'thread'
t = ARGV[0].to_i
c = ARGV[1].to_i
0.upto(t) do |i|
thread = []
0.upto(c) do |j|
thread[j] = { }
0.upto(c) do |j|
View threadtest.c
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
void *dumb_thread();
main(int argc, char *argv[])
int total = atoi(argv[1]);
int concurrency = atoi(argv[2]);
pthread_t pthread[concurrency];
View ImageResizingBenchmarks.rb
require 'rubygems'
require 'rusage'
require 'pp'
require 'benchmark'
files = Dir['samples/**/*']
command = case ARGV[0]
when 'gd2'
require 'gd2'
lambda do |file|
GD2::Image.import(file).resize(128, 128).export('/dev/null', :format => :jpeg)
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