KrisYu

import UIKit

extension UIImage {

    subscript (x: Int, y: Int) -> UIColor? {

        if x < 0 || x > Int(size.width) || y < 0 || y > Int(size.height) {
            return nil
        }

KrisYu

// plain write to image
@discardableResult func writeCGImage(_ image: CGImage, to destinationURL: URL) -> Bool {
    guard let destination = CGImageDestinationCreateWithURL(destinationURL as CFURL, kUTTypePNG, 1, nil) else { return false }
    CGImageDestinationAddImage(destination, image, nil)
    return CGImageDestinationFinalize(destination)
}


// There's a panel, save image png

KrisYu

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

import Cocoa

public func caputreRegion(toURL fileUrl: URL) -> URL {
    
    let fileUrlPath = fileUrl.path
    
    let task = Process()
    task.launchPath = "/usr/sbin/screencapture"

KrisYu

import Cocoa


class LogFile {
    
    static var logPath: String? {
        get {
            let paths = NSSearchPathForDirectoriesInDomains(.applicationSupportDirectory,
                                                            .userDomainMask,
                                                            true)

KrisYu

import Cocoa
let a = #imageLiteral(resourceName: "hot.png")

extension NSImage {
    var toCGImage: CGImage {
        var imageRect = NSRect(x: 0, y: 0, width: size.width, height: size.height)
        guard let image =  cgImage(forProposedRect: &imageRect, context: nil, hints: nil) else {
            abort()
        }
        return image

KrisYu

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

import UIKit

let a = #imageLiteral(resourceName: "hot.png")

func createPDF(image: UIImage) -> NSData? {
 
    let pdfData = NSMutableData()
    let pdfConsumer = CGDataConsumer(data: pdfData as CFMutableData)!

KrisYu

func downloadFile(url: URL) {
    let downloadRequest = URLRequest(url: url)
    URLSession.shared.downloadTask(with: downloadRequest) { location, response, error in
        // To do check resoponse before saving
        guard let tempLocation = location, error == nil else { return }
        let documentDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).last
        do {
            let fullURL = try documentDirectory?.appendingPathComponent((response?.suggestedFilename!)!)
            try FileManager.default.moveItem(at: tempLocation, to: fullURL!)
            print("saved at \(String(describing: fullURL)) ")

KrisYu

import Cocoa
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true


struct iTunesRequestManager {
    
    static func getSearchResult(_ query: String, results: Int, langString: String, completionHandler: @escaping ([[String: AnyObject]], NSError?) -> Void){
        var urlComponents = URLComponents.init(string: "https://itunes.apple.com/search")

KrisYu

import Cocoa
import PlaygroundSupport

PlaygroundPage.current.needsIndefiniteExecution = true



if let url = URL(string: "https://api.github.com/users/octocat") {
    
    URLSession.shared.dataTask(with: url){ data, response, error in

KrisYu

#filename: kindlesplit.py
f=open('My Clippings.txt').read()
notes = f.split('==========\r\n')
lines = []
booktitle = []
lines = notes[:]

for i in range(len(lines)):
    lines[i]=lines[i].split('\r\n')
    booktitle.append(lines[i][0])