benjaminsnorris

collections:
  drafts:
    output: true

benjaminsnorris

import UIKit

class TextEditing: UIViewController {
  
  @IBOutlet weak var textView: UITextView?
  
  func updateText(with newString: String?) {
    guard let textView = textView, newString = newString, (diffRange, changedText) = diff(textView.text, newString) else { return }
    guard let selectedRange = textView.selectedTextRange else { textView.text = newString; return }
    textView.text = newString

benjaminsnorris

private func nearestPotentialStartTime(toTime time: NSDate) -> NSDate {
    let calendar = NSCalendar.currentCalendar()
    let components = calendar.components([.Era, .Year, .Month, .Day, .Hour, .Minute], fromDate: time)
    
    let minutes = components.minute
    let nextStartMark = (minutes % startInterval) + startInterval
    let previousStartMark = nextStartMark - startInterval
    
    let previousDelta = abs(minutes - previousStartMark)
    let nextDelta = abs(minutes - nextStartMark)

benjaminsnorris

// MARK: - HEX init
// From Tim Shadel

enum UIColorInputError: ErrorType {
    case UnableToScanHexValue
}

extension UIColor {
    
    convenience init(hex: Int, alpha: CGFloat = 1.0) {

benjaminsnorris

    // From Tim Shadel
    enum FakeError: String, ErrorType, CustomStringConvertible {
        case LoginFailed
        
        var description: String {
            return "FakeError: \(self.rawValue)"
        }
    }

benjaminsnorris

extension ErrorType {
    
    // MARK: - Internal functions
    
    func describe() -> String {
        if let error = self as? CustomStringConvertible {
            return error.description
        } else {
            let error = self as NSError
            return error.localizedDescription

benjaminsnorris

// From Bart Whiteley
public protocol UnmarshalingFactory: Marshal.ValueType {
    associatedtype ConvertibleType = Self
    
    static func createFromObject(object: MarshaledObject) throws -> ConvertibleType
}

extension UnmarshalingFactory {
    
    public static func value(object: Any) throws -> ConvertibleType {

benjaminsnorris

import Security

/// A wrapper around the Keychain API.

public class Keychain {
    private let name: String
    private let accessGroup: String?
    
    public init(name: String, accessGroup: String? = nil) {
        self.name = name

benjaminsnorris

class CollectionViewController: UIViewController {
  ...
  func snapToCenter() {
      let centerPoint = view.convertPoint(view.center, toView: collectionView)
      guard let centerIndexPath = collectionView.indexPathForItemAtPoint(centerPoint)
      collectionView.scrollToItemAtIndexPath(centerIndexPath, atScrollPosition: .CenteredHorizontally, animated: true)
  }
  ...  
}
    

benjaminsnorris

struct FlagEmoji {
  private static let regionalIndicatorA: UInt32 = 0x1F1E6
​
  enum Error: ErrorType {
    case ExpectedOnlyAZ
  }
​
  private static func toRegionalIndicator(scalar: UnicodeScalar) throws -> UnicodeScalar {
    let offset: UInt32
    switch scalar {