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extension Date {
	
	struct Formatter {
		
		static let iso8601: DateFormatter = {
			let formatter = DateFormatter()
			formatter.calendar = Calendar(identifier: .iso8601)
			formatter.locale = Locale.current
			formatter.timeZone = TimeZone(secondsFromGMT: 0)
			formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSXXXXX"

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import UIKit

class ViewController: UIViewController {

	let placeholder = "Placeholder"
	
	@IBOutlet weak var textView: UITextView!
	
	override func viewDidLoad() {
		super.viewDidLoad()

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extension NSLayoutConstraint {
	
	func setMultiplier(multiplier:CGFloat) -> NSLayoutConstraint {
		
		let newConstraint = NSLayoutConstraint(
			item: firstItem,
			attribute: firstAttribute,
			relatedBy: relation,
			toItem: secondItem,
			attribute: secondAttribute,

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import SystemConfiguration

public class Reachability {
	
	class func isConnectedToNetwork() -> Bool {
		var zeroAddress = sockaddr_in()
		zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
		zeroAddress.sin_family = sa_family_t(AF_INET)
		let defaultRouteReachability = withUnsafePointer(&zeroAddress) {
			SCNetworkReachabilityCreateWithAddress(nil, UnsafePointer($0))

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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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import Foundation

extension String {

	func isValidEmail() -> Bool {
		let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
		let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
		return emailTest.evaluateWithObject(self)
	}

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#
# c.f. StackOverflow question/answer here: http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4
#
# Version 2.5
#
# Latest Change:
# - The "copy headers" section now respects the build setting for the location of the public headers
# - Opens the directory with the universal library after build (Can be annoying)
# 
# Purpose:

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import UIKit

class CenterViewFlowLayout: UICollectionViewFlowLayout {
	
	override func collectionViewContentSize() -> CGSize {
		// Only support single section for now.
		// Only support Horizontal scroll
		let count = self.collectionView?.dataSource?.collectionView(self.collectionView!, numberOfItemsInSection: 0)
		let canvasSize = self.collectionView!.frame.size
		var contentSize = canvasSize

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let directories = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.AllDomainsMask, true)
if let documentDirectory = directories.first {
	do {
		let documents = try NSFileManager.defaultManager().contentsOfDirectoryAtPath(documentDirectory)
		for files in documents {
			let urlForm = NSURL.fileURLWithPath(documentDirectory + "/" + files)
			do {
				try print("\(files): \(urlForm.resourceValuesForKeys([NSURLIsExcludedFromBackupKey]))")
			} catch {
				print("can't find key")

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import UIKit

public enum DeviceSpecific {
	case iPhone
	case iPhoneRetina
	case iPhone5
	case iPhone6
	case iPhone6Plus
	case iPad
	case iPadRetina