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dispatch_source_t CreateDispatchTimer(uint64_t interval, uint64_t leeway, dispatch_queue_t queue, dispatch_block_t block)
{
    dispatch_source_t timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue);
    if (timer)
    {
        dispatch_source_set_timer(timer, dispatch_walltime(NULL, 0), interval, leeway);
        dispatch_source_set_event_handler(timer, block);
        dispatch_resume(timer);
    }
    return timer;

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var gradient: CAGradientLayer = CAGradientLayer()
gradient.frame = view.bounds
gradient.colors = [UIColor(rgba: "#71B280").CGColor, UIColor(rgba: "#134E5E").CGColor]
self.view.layer.insertSublayer(gradient, atIndex: 0)

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- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [self dismissViewControllerAnimated:YES completion:^{
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            [UIApplication sharedApplication].idleTimerDisabled = YES;
        });
    }];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
    self dismissViewControllerAnimated:YES completion:^{

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+ (UIImage *)imageFromText:(NSString *)text size:(CGSize)size fontName:(NSString *)fontName maxFontSize:(CGFloat)maxFontSize minFontSize:(CGFloat)minFontSize
{
	UIFont *font;
	CGSize fontSize;
	
	for (CGFloat maxSize = maxFontSize; maxSize >= minFontSize; maxSize -= 1.f) {
		font = [UIFont fontWithName:fontName size:maxSize];
		fontSize = [text sizeWithAttributes:@{ NSFontAttributeName : font }];
		
		if (fontSize.width <= size.width) {

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import UIKit

public extension UIView {
  public class func instantiateFromNib<T: UIView>(viewType: T.Type) -> T {
    return NSBundle.mainBundle().loadNibNamed(NSStringFromClass(viewType).pathExtension, owner: nil, options: nil).first as! T
  }

  public class func instantiateFromNib() -> Self {
    return instantiateFromNib(self)
  }

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import UIKit

public extension UIView {
	
	public class func instantiateFromNib<T: UIView>(viewType: T.Type) -> T {
		let url = NSURL(string: NSStringFromClass(viewType))
		return NSBundle.mainBundle().loadNibNamed(url?.pathExtension, owner: nil, options: nil).first as! T
	}
	
	public class func instantiateFromNib() -> Self {

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class Array2D<T> {
	
	var columns: Int
	var rows: Int
	var matrix: [T]
	
	init(columns: Int, rows: Int, defaultValue: T) {
		self.columns = columns
		self.rows = rows
		matrix = Array(count: columns * rows, repeatedValue: defaultValue)

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import Foundation

extension CollectionType where Index == Int {
	func shuffle() -> [Generator.Element] {
		var list = Array(self)
		list.shuffleInPlace()
		return list
	}
}

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private var propertyAssociationKey: UInt8 = 0

extension String {
	weak var property: CustomClass! {
		get {
			return objc_getAssociatedObject(self, &propertyAssociationKey) as? CustomClass
		}
		set(newValue) {
			objc_setAssociatedObject(self, &propertyAssociationKey, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
		}

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//
//  CoreDataStorage.swift
//  TutorialAppGroup
//
//  Created by Maxim on 10/18/15.
//  Copyright © 2015 Maxim. All rights reserved.
//

import Foundation
import CoreData