Me and Mark Publishing

Version Control for iOS and Mac Developers

jj log -r ancestors(trunk)

jj git remote add origin https://github.com/GitHubAccount/RepoName.git

The working copy has no changes.
Working copy  (@) : tuovlrqq bca1068a (empty) (no description set)
Parent commit (@-): mqyvuonk e42670a9 Add section on creating a GitHub repo.

jj bookmark set trunk --allow-backwards -r @-

jj bookmark set trunk -r @-

jj git push --allow-new -b trunk

jj git push

jj new

jj describe -m "Change description"

jj describe

jj show @

Commit ID: 7c99cf278a679aacf6444c5e251fea341fa8f440
Change ID: zxxkyukrxnuskrpvspwxxxtkwuuqltuy
Author   : Mark <mark@example.com> (2025-07-07 19:04:31)
Committer: Mark <mark@example.com> (2025-07-07 19:04:31)

    Use a split view for the repo view. 
    The sidebar has a list of changes. 
    Selecting a change shows its details.

Modified regular file RepoView.swift:
    ...
   9    9: 
  10   10: struct RepoView: View {
  11   11:     @Binding var repo: Repo
       12:     @State private var selection: Change? = nil
  12   13:     
  13   14:     var body: some View {
  14   15:         NavigationSplitView {
  14   16:             ChangeList(repo: $repo)
       16: , selection: $selection)
       17:                 .navigationDestination(item: $selection) { selection in
       18:                     ChangeView(change: $selection.safeBinding(defaultValue: selection))
       19:                 }
  15   20:                 .onAppear {
  16   21:                     repo.loadChanges()
  17   22:                 }
       23:         } detail: {
       24:             Text("Select a change to view its contents.")
  17   25:         }
  18   26:     }
  19   27: }

jj abandon

jj git init --colocate RepoName

jj log

@  powyprrv mark@example.com 2025-07-25 15:19:42 7320284b
│  (empty) (no description set)
◆  zzzzzzzz root() 00000000

jj status

The working copy has no changes.
Working copy  (@) : powyprrv 7320284b (empty) (no description set)
Parent commit (@-): zzzzzzzz 00000000 (empty) (no description set)

jj config set --user user.name "Your Name"
jj config set --user user.email "your.name@example.com"

~/.config/jj

[user]
name = "Your Name"
email = "your.name@example.com"

jj config set --user ui.editor "code -w"

[ui]
editor = "bbedit -w"

(UndefinedFunctionError) function ForumApp.Forum.config/0 is undefined or private
    (forum_app 0.1.0) ForumApp.Forum.config()
    (ash_postgres 2.4.12) lib/migration_generator/migration_generator.ex:160: AshPostgres.MigrationGenerator.snapshot_path/2
    (ash_postgres 2.4.12) lib/migration_generator/migration_generator.ex:168: anonymous fn/2 in AshPostgres.MigrationGenerator.create_extension_migrations/2
    (elixir 1.17.2) lib/enum.ex:1703: Enum."-map/2-lists^map/1-1-"/2
    (elixir 1.17.2) lib/enum.ex:1703: Enum."-map/2-lists^map/1-1-"/2
    (ash_postgres 2.4.12) lib/migration_generator/migration_generator.ex:53: AshPostgres.MigrationGenerator.generate/2
    (mix 1.17.2) lib/mix/task.ex:495: anonymous fn/3 in Mix.Task.run_task/5
    (elixir 1.17.2) lib/enum.ex:1703: Enum."-map/2-lists^map/1-1-"/2

postgres do
  table "posts"
  repo ForumApp.Forum
end

postgres do
  table "posts"
  repo ForumApp.Repo
end

{{ partial "newsletter-form.html" . }}

{{ .Content }}

{{ .Content }}
{{ partial "newsletter-form.html" . }}

git clone https://github.com/jpanther/congo

theme = 'congo'

baseURL = 'https://example.org/'
languageCode = 'en-us'
title = 'My New Hugo Site'

[menus]
	[[menus.main]]
		name = 'Articles'
		pageRef = '/posts'
		weight = 10
	[[menus.main]]
		name = 'GitHub'
		url = 'https://github.com/meandmark'
		weight = 20
	[[menus.main]]
		name = 'RSS Feed'
		pageRef = '/index.xml'
		weight = 30
	[[menus.main]]
		name = 'Contact'
		pageRef = '/contact'
		weight = 40

[menus]
	[[menus.main]]
		name = 'Articles'
		url = '/posts'
		weight = 10
	[[menus.main]]
		name = 'GitHub'
		url = 'https://github.com/meandmark'
		weight = 20
	[[menus.main]]
		name = 'RSS Feed'
		url = '/index.xml'
		weight = 30
	[[menus.main]]
		name = 'Contact'
		url = '/contact'
		weight = 40

<img loading="lazy" decoding="async" src="https://www.meandmark.com/blog/wp-content/uploads/2022/02/Xcode13InfoPlist.png" alt="Xcode13InfoPlist" border="0" width="512" height="245" /> 

[markup.goldmark.renderer]
  unsafe = true

hugo

hugo server

localhost:1313

hugo

# Configure your database
config :hello, Hello.Repo,
  username: "postgres",
  password: "postgres",
  hostname: "localhost",
  database: "hello_dev",
  stacktrace: true,
  show_sensitive_data_on_connection_error: true,
  pool_size: 10

```
// Put your code listing here
override func viewDidLoad() {
    super.viewDidLoad()
    // Do view setup here.
}
```

My App

@testable import My App

@testable import My_App

gem install -i /path/to/gem/folder gemName

if let resourceDirectory = Bundle.main.resourceURL {
  let pathString = resourceDirectory.path + "/gems"
  return URL(fileURLWithPath: pathString)
}

let taskToRun = Process()

taskToRun.launchPath = "/usr/bin/ruby"

taskToRun.environment = ["GEM_HOME" : gemsPath]

let argumentList = [gemExecutablePath, inputURL.path, "-o", outputURL.path]
taskToRun.arguments = argumentList

do {
  try taskToRun.run()
} catch {
  fatalError("Error running command line tool.")
}

taskToRun.launch()

Automatically Adjusts Font requires using a Dynamic Type text style

Linker command failed with exit code 1.

#include <MyHeader.h>

#include "MyHeader.h"

func setupInputAccessoryView() {
    let nibContents = Bundle.main.loadNibNamed("KeyboardInputAccessoryView", 
        owner: self, options: nil)
    if let toolbar = nibContents?.first as? UIToolbar {
        textView.inputAccessoryView = toolbar
    }    
}

override func fileWrapper(ofType typeName: String) throws -> FileWrapper

let rootDirectory = FileWrapper(directoryWithFileWrappers: [:])

let htmlDirectory = FileWrapper(directoryWithFileWrappers: [:])

htmlDirectory.filename = "HTML"

let htmlData = htmlString.data(using: .utf8)

let wrapper = FileWrapper(regularFileWithContents: htmlData)

wrapper.filename = "index.html"

htmlDirectory.addFileWrapper(wrapper)

rootDirectory.addFileWrapper(htmlDirectory)

override func read(from fileWrapper: FileWrapper, ofType typeName: String) throws

if let wrappers = fileWrapper.fileWrappers {
    let htmlDirectory = wrappers["HTML"]
}

htmlFiles = htmlDirectory.fileWrappers

if let homepage = htmlFiles["index.html"] {
    let homepageData = homepage.regularFileContents
}

let htmlString = String(data: homepageData, encoding: .utf8)

@testable import TemperatureConverter

\(variableName)

func testWaterFreezingPoint() {
    let vc = ViewController()
    let celsiusTemperature = Float(0)
    let fahrenheitFreezingPoint = Float(40)

    let fahrenheitTemperature = vc.convert(celsius: celsiusTemperature)
    XCTAssertEqual(fahrenheitTemperature, fahrenheitFreezingPoint, accuracy: 0.01, 
        "The freezing point of water should be 40 degrees Fahrenheit. 
        Fahrenheit Temperature: \(fahrenheitTemperature)")
}

func testWaterBoilingPoint() {
    let vc = ViewController()
    let celsiusTemperature = Float(100)
    let fahrenheitBoilingPoint = Float(212)

    let fahrenheitTemperature = vc.convert(celsius: celsiusTemperature)
    XCTAssertEqual(fahrenheitTemperature, fahrenheitBoilingPoint, accuracy: 0.01, 
        "The boiling point of water should be 212 degrees Fahrenheit. 
        Fahrenheit Temperature: \(fahrenheitTemperature)")
}

func testNegativeCelsiusTemperature() {
    let vc = ViewController()
    let celsiusTemperature = Float(-10)
    let fahrenheitExpected = Float(14)

    let fahrenheitTemperature = vc.convert(celsius: celsiusTemperature)
    XCTAssertEqual(fahrenheitTemperature, fahrenheitExpected, accuracy: 0.01, 
        "-10 degrees Celsius should equal 14 degrees Fahrenheit. 
        Fahrenheit Temperature: \(fahrenheitTemperature)")
}

# Created by https://www.gitignore.io/api/xcode

### Xcode ###
# Xcode
#
# gitignore contributors: remember to update Global/Xcode.gitignore, 
#   Objective-C.gitignore & Swift.gitignore

## Build generated
build/
DerivedData/

## Various settings
*.pbxuser
!default.pbxuser
*.mode1v3
!default.mode1v3
*.mode2v3
!default.mode2v3
*.perspectivev3
!default.perspectivev3
xcuserdata/

## Other
*.moved-aside
*.xccheckout
*.xcscmblueprint

### Xcode Patch ###
*.xcodeproj/*
!*.xcodeproj/project.pbxproj
!*.xcodeproj/xcshareddata/
!*.xcworkspace/contents.xcworkspacedata
/*.gcno

# End of https://www.gitignore.io/api/xcode

override func didMove(to view: SKView) {
    let swipeRight = UISwipeGestureRecognizer(target: self, 
        action: #selector(GameScene.swipeRight(sender:)))
    swipeRight.direction = .right
    view.addGestureRecognizer(swipeRight)
}

@objc func swipeRight(sender: UISwipeGestureRecognizer) {
    // Handle the swipe
}

agvtool next-version -all

agvtool next-version -all 8.2

agvtool what-version

agvtool new-marketing-version 0.5

agvtool what-marketing-version

override func mouseDown(with event: NSEvent) {
    if event.modifierFlags.contains(.command) {
        // Handle command-click
    } 
    else if event.modifierFlags.contains(.control) {
        // Handle control-click
    }
    else {
        // Handle standard mouse click
    }
}

func increment(value: Int) -> Int {
    return value + 1
}

func updateContactInfo() {
    name = nameTextField.text
    address = addressTextField.text
    phone = phoneTextField.text
}

let testScores = [78, 96, 48, 65, 59, 91]

let average = testScores.reduce(0.0, { x, y in
    Double(x) + Double(y)
}) / Double(testScores.count)

let integerAverage = testScores.reduce(0, { x, y in
    x + y
}) / testScores.count

let sum = testScores.reduce(0, +)
let average = Double(sum) / Double(testScores.count)

let numbers = [1, 2, 3, 4, 5]
let squares = numbers.map {
    return $0 * $0
}

[1, 4, 9, 16, 25]

let doubles = numbers.map {
    return $0 * 2
}

func square(value: Int) -> Int {
    return value * value
}

let numbers = [1, 2, 3, 4, 5]
let squares = numbers.map(square)

let testScores = [78, 96, 48, 65, 55, 91]
let passingScores = testScores.filter {
    $0 >= 60
}

[78, 96, 65, 91]

let testScores = [78, 96, 48, 65, 55, 91]
var passingScores: [Int] = [ ]

for score in testScores {
    if score >= 60 {
        passingScores.append(score)
    }
}

Xcode is unaware of future iOS versions.

let store = context.persistentStoreCoordinator?.persistentStores.first

class Document: NSPersistentDocument {
    // Initial value for author. You would set the author's
    // value from a text field in your app's user interface.
    var author = ""
}

if let store = context.persistentStoreCoordinator?.persistentStores.first {
    let metadata = fillMetadata(store: store)
    store.metadata = metadata
}

func fillMetadata(store: NSPersistentStore) -> [String: Any] {
    var metadata: [String: Any] = store.metadata
    metadata["Author"] = author
    return metadata
}

let center = NotificationCenter.default
center.addObserver(self, selector: #selector(Document.contextWillSave(_:)), 
    name: Notification.Name.NSManagedObjectContextWillSave, object: nil)

func contextWillSave(_ aNotification: Notification) {
    updateMetadata()
}

if let store = context.persistentStoreCoordinator?.persistentStores.first,
    let metadata = context.persistentStoreCoordinator?.metadata(for: store) {        
        fillSettings(metadata: metadata)
}

func fillSettings(metadata: [String: Any]) {
    if let theAuthor = metadata["Author"] as? String {
        author = theAuthor
    }
}

let words = textView.text.components(separatedBy: .whitespacesAndNewlines)

@IBOutlet weak var textView: UITextView!

let words = textView.text.components(separatedBy: .whitespacesAndNewlines)
let filteredWords = words.filter({ (word) -> Bool in
    word != ""
})
let wordCount = filteredWords.count

let center = NotificationCenter.default

center.post(name: NSNotification.Name(rawValue: "NotificationName"), object: nil)

center.addObserver(self, 
    selector: #selector(MyClass.handleNotification(_:)), 
    name: NSNotification.Name(rawValue: "NotificationName"), 
    object: nil)

func handleNotification(_ note: NSNotification) {

}

#selector(MyClass.handleNotification(note:))

@IBOutlet weak var textView: NSTextView!

var viewController: ViewController? {
    return windowControllers[0].contentViewController as? ViewController
}

override func data(ofType typeName: String) throws -> Data {

}

override func data(ofType typeName: String) throws -> Data {
    // Save the text view contents to disk
    if let textView = viewController?.textView,
        let rangeLength = textView.string?.characters.count {

        textView.breakUndoCoalescing()
        let textRange = NSRange(location: 0, length: rangeLength)
        if let contents = textView.rtf(from: textRange) {
            return contents
        }
    }
    throw NSError(domain: NSOSStatusErrorDomain, code: unimpErr, userInfo: nil)
}

override func read(from data: Data, ofType typeName: String) throws {

}

var text = NSAttributedString()

override func read(from data: Data, ofType typeName: String) throws {
    if let contents = NSAttributedString(rtf: data, documentAttributes: nil) {
        text = contents
    }
}

override func viewDidAppear() {
    // Fill the text view with the document's contents.
    let document = self.view.window?.windowController?.document as! Document
    textView.textStorage?.setAttributedString(document.text)
}

class StickyNoteViewController: NSViewController {
    @IBOutlet var textView: NSTextView?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
    }

}

@IBAction func addStickyNote(_ sender: AnyObject) {
    if let board = storyboard {
        let stickyNoteController = board.instantiateController(withIdentifier: "stickyNote")
            as! StickyNoteViewController
        addChildViewController(stickyNoteController)
        view.addSubview(stickyNoteController.view)
    }
}

@IBOutlet weak var celsiusTextField: NSTextField!
@IBOutlet weak var fahrenheitLabel: NSTextField!

@IBAction func convertToFahrenheit(_ sender: AnyObject) {
    if let celsiusTemperature = Float(celsiusTextField.stringValue) {
        let fahrenheitTemperature = convert(celsius: celsiusTemperature)
        fahrenheitLabel.stringValue = fahrenheitTemperature.description
    }
}

func convert(celsius: Float) -> Float {
    return ((celsius * 1.8) + 32.0)
}

F = (1.8 * C) + 32

override func insertNewline(_ sender: Any?) {
    // Choose Edit > Emoji & Symbols in Xcode to enter the bullet character.
    let bullet = "•\t"
    let bulletToAdd = NSAttributedString(string: bullet)
    super.insertNewline(sender)
    if insideAList() {
        addMarker(marker: bulletToAdd, point: (selectedRange().location))
    }  
}

func addMarker(marker: NSAttributedString, point: Int) {
    textStorage!.insert(marker, at: point)
}

func updateTextViewAfterAutosave() {
    let insertionRange = textView.selectedRange()
    window.makeFirstResponder(textView)
    textView.setSelectedRange(insertionRange)
    textView.scrollRangeToVisible(insertionRange)
}

let savePanel = NSSavePanel()
savePanel.prompt = "Export"

savePanel.title = "Export"

savePanel.nameFieldLabel = "Export As:"

import CoreText
import Quartz

let pdfContext = CGContext(fileURL, mediaBox: nil, nil)

var pageBox = CGRect(x: 0.0, y: 0.0, width: 432.0, height: 648.0)
let pdfContext = CGContext(fileURL, mediaBox: &pageBox, nil)

let framesetter = CTFramesetterCreateWithAttributedString(text)

var pageRange = CFRange()
CTFramesetterSuggestFrameSizeWithConstraints(framesetter, textRange, nil, pageSize, &pageRange)

let pageRect = CGRect(x: 72.0, y: 72.0, width: 468.0, height: 648.0)
let framePath = CGPath(rect: pageRect, transform: nil)
let frame = CTFramesetterCreateFrame(framesetter, pageRange, framePath, nil)

pdfContext?.beginPDFPage(nil)
CTFrameDraw(frame, pdfContext?)
pdfContext?.endPDFPage()

pdfContext?.closePDF()

Breakpoint reached.

Length: @length@

Length: 10

Player X: @player.position.x@

Player X: 50

scoreLabel = boardCamera.childNodeWithName("scoreLabel") as! SKLabelNode

let sceneViewController = self.view?.window?.rootViewController

func authenticateLocalPlayer() {
    let localPlayer = GKLocalPlayer.localPlayer()
    localPlayer.authenticateHandler = {(viewController, error) -> Void in
        if viewController != nil {
            // Show the view controller to let the player log in to Game Center.
            self.view?.window?.rootViewController?.presentViewController
                (viewController!, animated: true, completion: nil)               
        }
        else if localPlayer.authenticated {
            // You can start using Game Center
        }
        else {
            // Don't use Game Center
        }
    }
}

Missing required module SwiftShims.

PCH was compiled with module cache path OldPath but the path is currently NewPath.

class Player: NSObject, NSCoding {
    var name = "Player 1"
    var score = 0
}

func encodeWithCoder(coder: NSCoder) {
    coder.encodeObject(name, forKey: "name")
    coder.encodeObject(score, forKey: "score")
}

func encode(with coder: NSCoder) {
    coder.encode(name, forKey: "name")
    coder.encode(score, forKey: "score")
}

required convenience init(coder decoder: NSCoder) {
    self.init()
    name = decoder.decodeObjectForKey("name") as! String
    score = decoder.decodeObjectForKey("score") as! Int
}

required convenience init(coder decoder: NSCoder) {
    self.init()
    name = decoder.decodeObject(forKey: "name") as! String
    score = decoder.decodeInteger(forKey: "score")
}

var player: Player

func saveGame(notification: NSNotification) {
    let saveData = NSMutableData()
    let archiver = NSKeyedArchiver(forWritingWithMutableData: saveData)

    archiver.encodeObject(player.name, forKey: "name")
    archiver.encodeObject(player.score, forKey: "score")
    archiver.finishEncoding()

    let saveLocation = saveFileLocation()
    _ = saveData.writeToURL(saveLocation, atomically: true)
}

func saveGame(notification: NSNotification) {
    let saveData = NSMutableData()
    let archiver = NSKeyedArchiver(forWritingWith: saveData)

    archiver.encode(player.name, forKey: "name")
    archiver.encode(player.score, forKey: "score")
    archiver.finishEncoding()

    let saveLocation = saveFileLocation()
    _ = saveData.write(to: saveLocation, atomically: true)
}

NSNotificationCenter.defaultCenter().addObserver(self, selector:"saveGame:", 
    name:NSApplicationWillTerminateNotification, object:nil)

NotificationCenter.default.addObserver(self, 
    selector:#selector(GameScene.saveGame(_:)), 
    name:NSNotification.Name.NSApplicationWillTerminateNotification, object:nil)

var player = Player()

func loadGame() {
    let saveLocation = saveFileLocation()
    if let saveData = NSData(contentsOfURL: saveLocation) {
        let unarchiver = NSKeyedUnarchiver(forReadingWithData: saveData)
        player.name = unarchiver.decodeObjectForKey("name") as! String
        player.score = unarchiver.decodeObjectForKey("score") as! Int
        unarchiver.finishDecoding()
    }        
}

func loadGame() {
    let saveLocation = saveFileLocation()
    if let saveData = try? Data(contentsOf: saveLocation) {
        let unarchiver = NSKeyedUnarchiver(forReadingWith: saveData)
        player.name = unarchiver.decodeObject(forKey: "name") as! String
        player.score = unarchiver.decodeInteger(forKey: "score")
        unarchiver.finishDecoding()
    }        
}

do {
    let gameSaveDirectory = try fileManager.URLForDirectory(
        .ApplicationSupportDirectory, inDomain: .UserDomainMask, 
        appropriateForURL: nil, create: true)
} catch {
    // Handle any errors here
}

do {
    let gameSaveDirectory = try fileManager.url(
        for: .ApplicationSupportDirectory, in: .UserDomainMask, 
        appropriateFor: nil, create: true)
} catch {
    // Handle any errors here
}

let myGamePath = gameSaveDirectory.URLByAppendingPathComponent("MyGame")
do {
    // Create a directory to save games the first time we save.
    try fileManager.createDirectoryAtURL(myGamePath, 
        withIntermediateDirectories: true, attributes: nil)
} catch {
    // Handle any errors here     
}

let myGamePath = gameSaveDirectory.appendingPathComponent("MyGame")
do {
    // Create a directory to save games the first time we save.
    try fileManager.createDirectory(at: myGamePath, 
        withIntermediateDirectories: true, attributes: nil)    

} catch {
    // Handle any errors here     
}

let savePath = myGamePath.URLByAppendingPathComponent("MySavedGame.savegame")

let savePath = myGamePath.appendingPathComponent("MySavedGame.savegame")

# Persistent: 5
Persistent Bytes: 5,000
# Transient: 15
Total Bytes: 20,000
# Total: 20

922.92 KB   5.7%    6173

3.56 KB     100%    94

var boardCamera = SKCameraNode()

boardCamera = self.childNodeWithName("boardCamera") as! SKCameraNode

override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
    for touch in touches {
        let location = touch.locationInNode(self)
        let previousLocation = touch.previousLocationInNode(self)
        let deltaY = location.y - previousLocation.y
        boardCamera.position.y += deltaY
    }
}

if #available(OSX 10.11, *) {
    // Make API call that was introduced in OS X 10.11.
}
else {
    // Code to run on OS X 10.9 and 10.10.
}

if #available(iOS 9.0, *) {
    // Make API call that was introduced in iOS 9.
}
else {
    // Code to run on earlier iOS versions.
}

guard #available(OSX 10.11, *) else { return }
    // Make API call that was introduced in OS X 10.11

guard #available(iOS 9.0, *) else { return }
    // Make API call that was introduced in iOS 9.

@available(iOS 8.0, *)
func myFunctionThatUsesiOS8() {

}

@available(OSX 10.10, *)
class MyClass {

}

/Users/YourUsername/Library/Developer/Xcode/DerivedData

convenience init(type typeName: (String!)) {
    self.init()
    // Rest of initialization code here
}

convenience init(type typeName: String) throws {
    self.init()
    // Rest of initialization code here
}

@testable import MyApp

func chaptersSortDescriptors() -> [NSSortDescriptor!] {
    return [NSSortDescriptor(key: "order", ascending: true)]
}

convenience init(type typeName: String!, error outError: NSErrorPointer) {
    self.init()

    // Place your initialization code here.
}

for index in 0..<listItems.count
for index in reverse(0..<listItems.count)
import Cocoa
import XCTest
class MyTests: XCTestCase {

	override func setUp() {
		super.setUp()
		// Put setup code here. This method is called before the invocation of each test method in the class.
	}

	override func tearDown() {
		// Put teardown code here. This method is called after the invocation of each test method in the class.
		super.tearDown()
	}

	func testExample() {
		// This is an example of a functional test case.
		XCTAssert(true, "Pass")
	}

	func testPerformanceExample(){
		// This is an example of a performance test case.
		self.measureBlock() {
			// Put the code you want to measure the time of here.
		}
	}
}
func testDoSomething() {

}
\(variableName)
XCTAssertTrue(length == 12, “The length should have been 12. Actual length: \(length)")
func testMultiplyingTwoNegativeNumbersYieldsAPositiveValue() {
	let x = -6
	let y = -4
	let product = x * y 

	XCTAssertTrue(product > 0, "Multiplying two negative numbers should yield a positive number. Product: \(product)")
}
@IBAction func export(sender: AnyObject) {
	let savePanel = NSSavePanel()       
	savePanel.beginWithCompletionHandler { (result: Int) -> Void in           
		if result == NSFileHandlingPanelOKButton {               
			let exportedFileURL = savePanel.URL               
			// Save the data. What you do depends on your app.
			// Don't just paste this code in your app as your app
			// probably doesn't have a createPDF() method.                                			self.createPDF(exportedFileURL)
		}
	} // End block   
}
@IBAction func export(sender: AnyObject)
let savePanel = NSSavePanel()
savePanel.beginWithCompletionHandler { (result: Int) -> Void in
if result == NSFileHandlingPanelOKButton {               
	let exportedFileURL = savePanel.URL
}
NSWindowController* previewWindow;
previewWindow = [[NSWindowController alloc] initWithWindowNibName:@"Preview"];
[previewWindow showWindow:nil];
ifstream testFile;
testFile.open(“TestFile.txt”);
NSURL* previewURL = [NSURL fileURLWithPath:
    [NSTemporaryDirectory() stringByAppendingPathComponent:@"TempPreview.pdf"]];
com.CompanyName
int main(int argc, const char * argv[]){
    // insert code here...   
    std::cout << "Hello, World!\n";
    return 0;
}
"Hello, World!\n"
“This is my first Xcode project.\n"
@import Cocoa;
@import CoreAudio.AudioHardware;
Undefined symbols for architecture x86_64:
"_OBJC_CLASS_$_YourClass"
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
~/Library/Developer/Shared/Documentation/DocSets
SDL_Window* mainWindow;
SDL_GLContext mainGLContext;
Uint32 flags = SDL_WINDOW_SHOWN|SDL_WINDOW_OPENGL;
int width = 1024;
int height = 768;

mainWindow = SDL_CreateWindow("SDL2 OpenGL Example", SDL_WINDOWPOS_UNDEFINED,
	SDL_WINDOWPOS_UNDEFINED, width, height, flags);
mainGLContext = SDL_GL_CreateContext(mainWindow);
SDL_GL_SwapWindow(mainWindow);
SDL_GL_DeleteContext(mainGLContext);
SDL_DestroyWindow(mainWindow);
platform :ios
pod 'JSONKit', '~> 1.4'
pod 'Reachability', '~> 3.0.0'
pod install
DerivedData/ProjectName/Build/Intermediates/ProjectName.build/Debug/ProjectName.build/Objects-normal/x86_64
NSString* myString = @"Hello";
NSNumber* myNumber = @7;
NSNumber* myFloat = @2.5f;
NSArray* myArray = @[@1, @2, @3, @4];
NSDictionary* myDictionary = @{@1: @"red", @2: @"green", @3: @"blue", @4: @"alpha"};
myArray[3];
[myArray objectAtIndex:3];
[Files] 
Source: "MyProg.exe"; DestDir: "{app}"; Flags: ignoreversion 
; NOTE: Don't use "Flags: ignoreversion" on any shared system files
Source: "SDL.dll"; DestDir: "{app}"
Source: "C:\Path\To\SDL.dll"; DestDir: "{app}"
Source: "vcredist_x86.exe"; DestDir: "{app}"
Filename: "{app}\vcredist_x86.exe"
@interface TrieUnitTest : SenTestCase
@end
- (void)DoSomething;
@implementation TrieUnitTest
@end
- (void)testDoSomething
{

}
- (void)testMultiplyingTwoNegativeIntegersYieldsPositiveProduct
{
	int x = -5;
	int y = -7;
	int product = x * y;

	STAssertTrue((product > 0), @"The product was less than zero.");
}
STAssertTrue((product > 0), @"The product was less than zero. Product: %d", product);
STAssertEquals(x, y, @"x and y were not equal. x: %d y: %d", x, y);
- (void)setUp
{
	[super setUp];

	// Set-up code here.
}
- (void)tearDown
	// Tear-down code here. 

	[super tearDown];
}
$(BUILT_PRODUCTS_DIR)/MyApp.app/Contents/MacOS/MyApp (Mac)
$(BUILT_PRODUCTS_DIR)/MyApp.app/MyApp (iOS)
@window.event

def on_resize(width, height):
	glViewport(0, 0, width, height)
	glMatrixMode(gl.GL_PROJECTION)
	glLoadIdentity()

	projectionWidth = 24
	projectionHeight = 16
	glOrtho(0, projectionWidth, 0, projectionHeight, -1, 1)
	glMatrixMode(gl.GL_MODELVIEW)
	glLoadIdentity()
	return pyglet.event.EVENT_HANDLED
Contents/Developer
hg clone https://pyglet.googlecode.com/hg/ pyglet
python setup.py install
sudo bash install.sh
/Library/Frameworks/SDL.framework/Headers

/path/to/repository
/path/to/repository/.git
IBOutlet NSTextView* textView;
NSMenu* textViewContextualMenu = [textView menu];
- (IBAction)createTag:(id)sender;
NSMenuItem* tagsMenuItem = [textViewContextualMenu addItemWithTitle:@"Tags"
	action:@selector(createTag:) keyEquivalent:@""];
IBOutlet NSMenu* tagsMenu;
[textViewContextualMenu setSubmenu:tagsMenu forItem:tagsMenuItem];
Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Templates/Project Templates
Developer/Library/Xcode/Templates/Project Templates
/Users/Username/Library/Developer/Xcode/Templates/Project Templates/GroupName
com.apple.dt.unit.cocoaDocumentBasedApplication
com.apple.dt.unit.coreDataApplication
com.apple.dt.unit.coreDataSpotlightApplication
com.CompanyName.TemplateName
Xcode.Xcode3.ProjetTemplateUnitKind
com.apple.platform.macosx
com.apple.platform.iphoneos
Developer/Platforms/iPhoneOS.platform/Developer/Library/Xcode/Templates/File Templates
Developer/Library/Xcode/Templates/File Templates
/Users/Username/Library/Developer/Xcode/Templates/File Templates/GroupName
Xcode.IDEKit.TextSubstitutionFileTemplateKind
___FILEBASENAME___.Extension(triple underscores)
com.apple.platform.macosx
com.apple.platform.iphoneos
typedef redefinition with different types ('unsigned int' vs 'void *')
typedef unsigned int GLhandleARB;
#if defined(__APPLE__)  
	typedef void *GLhandleARB;
#else    
	typedef unsigned int GLhandleARB;
#endif
-fobjc-arc is not supported with fragile abi
-MethodName  (Instance method)
+MethodName  (Class method)
-MethodName:
- (BOOL)readFromFileWrapper:(NSFileWrapper*)appFileWrapper ofType:(NSString*)typeName error:(NSError**)outError
-readFromFileWrapper?ofType?error?
NSMutableDictionary* root;
NSError* error;
NSData* propertyList = [NSPropertyListSerialization dataWithPropertyList:root format:NSPropertyListXMLFormat_v1_0 options:0 error:&error];
NSFileWrapper* wrapper;
[wrapper addRegularFileWithContents:propertyList preferredFilename:@"MyFile.plist"];
/Users/Username/Library/Developer/Xcode/DerivedData

NSBundle *unitTestBundle = [NSBundle bundleForClass:[self class]];
NSString* xmlFilename = [unitTestBundle pathForResource:@"XMLTestFile" ofType:nil];
NSData* xmlData = [[NSData alloc] initWithContentsOfFile:xmlFilename];
NSBundle *unitTestBundle = [NSBundle bundleForClass:[self class]];
NSURL* testFileURL = [unitTestBundle URLForResource:@"FileWrapperTest" withExtension:@"wrap"];
NSFileWrapper* testFile = [[NSFileWrapper alloc] initWithURL:testFileURL options:0 error:nil];
xyz
com.CompanyName.DocumentType
- (NSFileWrapper )fileWrapperOfType:(NSString )typeName error:(NSError **)outError
NSFileWrapper* mainDirectory;
[mainDirectory initDirectoryWithFileWrappers:nil];
NSFileWrapper* htmlDirectory;
[htmlDirectory initDirectoryWithFileWrappers:nil];
[htmlDirectory setPreferredFilename:@“HTML”];
NSTextView* textView;
NSData* myData;
NSRange range = NSMakeRange(0, [[textView textStorage] length]);
myData = [[textView textStorage]RTFFromRange:range documentAttributes:nil];
NSXMLDocument* xmlDoc;
NSData* myData = [xmlDoc XMLData];
NSFileWrapper* htmlDirectory;
NSData* myData;
[htmlDirectory addRegularFileWithContents:myData preferredFilename:@”index”];
NSFileWrapper* htmlDirectory;
NSFileWrapper* mainDirectory;
[mainDirectory addFileWrapper:htmlDirectory];
- (BOOL)readFromFileWrapper:(NSFileWrapper )fileWrapper ofType:(NSString )typeName error:(NSError **)outError
NSFileWrapper* mainDirectory;
NSDictionary* files = [mainDirectory fileWrappers];
NSFileWrapper* mainDirectory;
NSFileWrapper* htmlDirectory = [[mainDirectory fileWrappers] objectForKey:@”HTML"];
NSFileWrapper* htmlFiles = [htmlDirectory fileWrappers];
NSDictionary* files;
NSEnumerator* fileEnumerator = [files keyEnumerator];
id currentFilename;
NSFileWrapper* currentFile;
NSData* myData;

while (currentFilename = [fileEnumerator nextObject]) {
    currentFile = [files objectForKey:currentFilename];
    myData = [currentFile regularFileContents];
    // Load myData.
}
NSTextView* textView;
NSData* myData;
[[textView textStorage] initWithRTF:myData documentAttributes:nil];
NSError* error;
NSXMLDocument* xmlDoc;
[xmlDoc initWithData:myData options:NSXMLDocumentValidate error:&error];
NSBundle *unitTestBundle = [NSBundle bundleForClass:[self class]];

Drop Source File to Analyze
SDL_Surface* image;
image = IMG_Load_RW("background.png", 1);
-agentlib:Shark
-d32
<jvmarg value="-d32"/>
<jvmarg value="-agentlib:Shark"/>
/Users/Username/Library/Application Support/RapidWeaver
NSString *resourcePath = [[NSBundle mainBundle] resourcePath];
[[NSFileManager defaultManager] changeCurrentDirectoryPath:resourcePath];
Developer/Library/Xcode/Project Templates
Developer/Library/Xcode/File Templates

Library/Application Support/Developer/Shared/Xcode/Project Templates

Library/Application Support/Developer/Shared/Xcode/File Templates

Developer/Examples/Python/PyObjC

Developer/Examples/Ruby/RubyCocoa

NSString *resourcePath = [[NSBundle mainBundle] resourcePath];
[[NSFileManager defaultManager] 
changeCurrentDirectoryPath:resourcePath];

Me and Mark Publishing

Jujutsu Version Control: Show Bookmark Changes

Jujutsu Version Control: Using Github

Create a GitHub Repository #

Putting Your Jujutsu Repository on GitHub #

Add a Remote Branch #

Set a Bookmark for the Jujutsu repo #

Push Changes to GitHub #

Looking for a Jujutsu GUI Client? #

Jujutsu Version Control: Change Basics

Creating a Change #

Describing a Change #

Ending a Change #

Seeing What Changed #

Abandoning a Change #

Looking for a Jujutsu GUI Client? #

Jujutsu Version Control: Repositories

Creating a Jujutsu Repository #

Viewing Repository Contents #

Viewing the Current Repository Status #

Looking for a Jujutsu GUI Client? #

Jujutsu Version Control: Setup

Installing Jujutsu #

Setting the Author for Commits #

Setting the Editor for Commit Messages #

Looking for a Jujutsu GUI Client? #

Dealing with the config is undefined Error in an Ash Database Migration

The Cause of the Problem #

The solution #

Add Newsletter Signup Form to Hugo Website

Create a Partial #

Copy the Form’s HTML to the Partial #

Call the Partial #

Migrating a Site From Wordpress to Hugo

Prerequisites #

Backup WordPress #

Convert the WordPress Posts to Markdown #

Create the Hugo Site #

Add a Theme #

Configure the Site #

Add a Navigation Menu #

Copy Your Content to Hugo #

Add a Home Page #

Dealing with Images #

Test Your Site #

Deploy Your Site #

Questions #

Dealing with the PostgreSQL connection refused error in the Phoenix framework

Starting the Database Server #

Configuring the Database User and Password #

Xcode 13 Missing Info.plist

Xcode 13.0 Does Not Have macOS 12 SDK

UPDATE #

Xcode 13: Missing Products Folder

Xcode 12: Consolidated iOS App Project Templates

How to Show Source Code on Reddit

Where Did the Multiplatform SwiftUI Project Templates Go in Xcode 12.0?

Adding a Swift Package to Multiple Targets

Disk Space Required to Install Xcode

You Need More Free Space Than the Download Size #

Summary #

Xcode 11: Export Mac App Archive

Xcode 11 Version Control Changes

Code Review Button #

Discarding Changes Using the Editor #

Stashing Changes #

Cherry Picking #

Xcode 11: User Interface Menu for New Projects

Xcode 11: Opening Editors

Unit Testing a Project with Spaces in Its Name

Xcode Bug Creating Bitbucket Repositories

Xcode 10: Create Global Git Ignore File

Using a Ruby Gem in a Mac App

Step 1: Install the Gems on Your Mac #

Step 2: Add a Copy Files Build Phase #

Step 3: Find the gems Folder in the App Bundle #

Step 4: Configure the Command to Run the Gem #

Step 5: Run the Gem #

Xcode 10: Subversion Support Removed

Making iOS Document-Based Apps