sanghapark

func calculateTextViewHeight(inset: UIEdgeInsets, lineFragmentPadding: CGFloat = 5.0, maxWidth: CGFloat, text: String, font: UIFont) -> CGSize {
  let widthWithoutInset = maxWidth - (inset.left + inset.right + (2 * lineFragmentPadding))
  let contraintRect = CGSize(width: widthWithoutInset, height: CGFloat.max)
  let style = NSMutableParagraphStyle()
  style.lineBreakMode = .ByWordWrapping
  let attributes = [NSFontAttributeName: font, NSParagraphStyleAttributeName: style]
  let boudingBox = NSString(string: text).boundingRectWithSize(contraintRect, options: .UsesLineFragmentOrigin, attributes: attributes, context: nil)
  let newWidth = (boudingBox.size.width + (inset.left + inset.right + (2 * lineFragmentPadding) + 0.25)).roundNearest(0.5)
  let newHeight = (boudingBox.size.height + ((inset.top + inset.bottom) + 0.25)).roundNearest(0.5)
  return CGSize(width: newWidth, height: newHeight)

sanghapark

extension String {
    func height(withConstrainedWidth width: CGFloat, font: UIFont) -> CGFloat {
        let constraintRect = CGSize(width: width, height: .greatestFiniteMagnitude)
        let boundingBox = self.boundingRect(with: constraintRect, options: .usesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil)
        
        return boundingBox.height
    }
}

sanghapark

import UIKit
import AVFoundation
import Photos

class ViewController: UIViewController {
  
  var focusMarker: UIImageView!
  var exposureMarker: UIImageView!
  var resetMarker: UIImageView!
  private var adjustingExposureContext: String = ""

sanghapark

class AsyncOperation: Operation {
  enum State: String {
    case Ready, Executing, Finished
    fileprivate var keyPath: String {
      return "is" + rawValue
    }
  }
  
  var state = State.Ready {
    willSet {

sanghapark

# Git branch in prompt.
parse_git_branch() {
	git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ (\1)/'
}
export PS1="\u@\h \[\033[32m\]\w\[\e[91m\]\$(parse_git_branch)\[\033[00m\] $ "

sanghapark

//: Playground - noun: a place where people can play

import UIKit
import PlaygroundSupport
PlaygroundPage.current.needsIndefiniteExecution = true


let userQueue = DispatchQueue.global(qos: .userInitiated)
let defaultQueue = DispatchQueue.global()

sanghapark

import Foundation
import Alamofire

enum NetworkStatus {
    case WWAN
    case EthernetOrWiFi
    case NotReachable
    case Unknown
}

sanghapark

protocol GeneratorType {
    associatedtype Element
    mutating func next() -> Element?
}

class FibsGenerator: GeneratorType {
    var state = (0, 1)
    func next() -> Int? {
        let upcomingNumber = state.0
        state = (state.1, state.0 + state.1)

sanghapark

extension AVAsset {
    
    func videoOrientation() -> (orientation: UIInterfaceOrientation, device: AVCaptureDevicePosition) {
        var orientation: UIInterfaceOrientation = .Unknown
        var device: AVCaptureDevicePosition = .Unspecified
        
        let tracks :[AVAssetTrack] = self.tracksWithMediaType(AVMediaTypeVideo)
        if let videoTrack = tracks.first {
            
            let t = videoTrack.preferredTransform