johnnyclem

CVImageBufferRef cvImage = CMSampleBufferGetImageBuffer(sampleBuffer);
CIImage *ciImage = [[CIImage alloc] initWithCVPixelBuffer:cvImage];

martin-nearsoft

#define EXP_SHORTHAND
#import <Specta/Specta.h>   // A light-weight TDD / BDD framework for Objective-C & Cocoa.
#import <Expecta/Expecta.h> // A Matcher Framework for Objective-C/Cocoa
#import <OCMock/OCMock.h>   // An Objective-C implementation of mock objects
#import <OCMock/NSInvocation+OCMAdditions.h>

// 'beforeEach' and 'afterEach' are also aliased as 'before' and 'after' respectively.
// 'describe' is also aliased as 'context'.
// 'it' is also aliased as 'example' and 'specify'.

seanlilmateus

import Foundation
// Playground - noun: a place where people can play
class Channel<T> {
    
    var stream: Array<T>
    let queue: dispatch_queue_t
    let semaphore: dispatch_semaphore_t
    
    init() {
        self.stream = []

d-ronnqvist

If you've haven't seen it before, there is a cool accessibility feature in UITableView that allows the user to toggle between different actions. It's really very elegant and it's a powerful and convenient implementation for VoiceOver users on iOS. One could say that it's the VoiceOver version of the swipe-to-delete feature.

To try it out yourselves, open one of the built in apps like Mail or Notes and turn on VoiceOver. If you are afraid to accidentally delete some of your important notes or email, you can also create a new Master-Detail Application in Xcode and run it on your device. Navigate to one of the cells and use the "Rotor" (rotate with two fingers on the screen) to find the "Actions" item. Now you can swipe up and down do toggle between "Activate Item (default action)" and "Delete". If you now double tap, the cell gets deleted instead of selected.

This is the default behavior and you get this accessibility out of the box with UITableView.

DenTelezhkin

+(void)uploadUserPhoto:(UIImage *)image
               success:(void (^)(void))success
               failure:(FailureBlock)failure
{
    GTSessionManager * manager = [GTSessionManager manager];

    NSString* tmpFilename = [NSString stringWithFormat:@"%f", [NSDate timeIntervalSinceReferenceDate]];
    NSURL* tmpFileUrl = [NSURL fileURLWithPath:[NSTemporaryDirectory() stringByAppendingPathComponent:tmpFilename]];
    
    NSString * query = [NSString stringWithFormat:@"%@user?auth_token=%@",[manager.baseURL absoluteString],[[UserManager shared] authToken]];

kirsteins

var initalArray = [1, 2, 3]
let pointer: UnsafeMutablePointer<Int> = UnsafeMutablePointer(initalArray)
let arrary = Array(UnsafeBufferPointer(start: pointer, count: initalArray.count))

aryaxt

extension Sequence {
	
	func groupBy<G: Hashable>(closure: (Iterator.Element)->G) -> [G: [Iterator.Element]] {
		var results = [G: Array<Iterator.Element>]()
		
		forEach {
			let key = closure($0)
			
			if var array = results[key] {
				array.append($0)

JadenGeller

struct Semaphore {
    
    let semaphore: dispatch_semaphore_t
    
    init(value: Int = 0) {
        semaphore = dispatch_semaphore_create(value)
    }
    
    // Blocks the thread until the semaphore is free and returns true
    // or until the timeout passes and returns false

JadenGeller

extension Bool {
    init<T : IntegerType>(_ integer: T){
        self.init(integer != 0)
    }
}

// Now you can do this
let x = Bool(5)  // true
let y = Bool(-1) // true
let z = Bool(0)  // false

twostraws

//
//  SimpleScrollingStack.swift
//  A super-simple demo of a scrolling UIStackView in iOS 9
//
//  Created by Paul Hudson on 10/06/2015.
//  Learn Swift at www.hackingwithswift.com
//  @twostraws
//

import UIKit