Robin Hayward robinhayward

Apple Real Devices Debugging

What you need

certificate--which tells your devices that Apple trust you
a app id
a test device
a provisioning profile

Create SSH Key on Mac for Xcode

The docs for GitHub show a command to create a key with the ed25519 encryption method which is not allowed by Xcode. Even if you are not using the Source Control features in Xcode you will often need to use an account with GitHub when you are consuming Swift packages which are pulled from GitHub.

For SSH keys there are 4 algorithms.

🚨 DSA: This is an older algorithm which is no longer supported and is superceded with more modern algorithms.
⚠️ RSA: This algorithm was an improvement but it is now outdated and a more modern method should be used.
👀 ECDSA: Another improvement which is dependent on your computer's ability to generate random numbers.
✅ Ed25519: The most recommended public-key algorithm today which you should use with GitHub.

	# Switch xcrun to leverage Xcode 7
	# Note: This won't be needed once Xcode 7 is released
	# and becomes the primary Xcode in use.
	export DEVELOPER_DIR=/Applications/Xcode-beta.app/Contents/Developer/

	# Export Archive
	xcrun xcodebuild -exportArchive -exportOptionsPlist exportPlist.plist -archivePath /path/to/app.xcarchive -exportPath /path/to/app.ipa

	Available keys for -exportOptionsPlist:

	compileBitcode : Bool

	For non-App Store exports, should Xcode re-compile the app from bitcode? Defaults to YES.

	embedOnDemandResourcesAssetPacksInBundle : Bool

	For non-App Store exports, if the app uses On Demand Resources and this is YES, asset packs are embedded in the app bundle so that the app can be tested without a server to host asset packs. Defaults to YES unless onDemandResourcesAssetPacksBaseURL is specified.

	defaults write xcodebuild PBXNumberOfParallelBuildSubtasks 4
	defaults write xcodebuild IDEBuildOperationMaxNumberOfConcurrentCompileTasks 4

	defaults write com.apple.xcode PBXNumberOfParallelBuildSubtasks 4
	defaults write com.apple.xcode IDEBuildOperationMaxNumberOfConcurrentCompileTasks 4

	import Foundation

	/// Represents the Log facilities
	struct Log {
	/// Prints in debug only
	static func debug(_ msg: String, line: Int = #line, fileName: String = #file, funcName: String = #function) {
	#if DEBUG
	let fname = (fileName as NSString).lastPathComponent
	print("[\(fname) \(funcName):\(line)]", msg)
	#endif

	#!/bin/bash
	#
	# Run SwiftLint

	START_DATE=$(date +"%s")

	SWIFT_LINT=/usr/local/bin/swiftlint
	SWIFT_FORMAT=/usr/local/bin/swiftformat

	if [[ -e "${SWIFT_LINT}" ]]; then

	import Combine

	extension Publisher {

	/// A single value sink function that coalesces either one `Output` or one `Failure` as a `Result`-type.
	public func sink(result: @escaping ((Result<Self.Output, Self.Failure>) -> Void)) -> AnyCancellable {
	return sink(receiveCompletion: { completion in
	switch completion {
	case .failure(let error):
	result(.failure(error))

	import SwiftUI

	/// View model protocol
	protocol ViewModel: ObservableObject {
	var count: Int { get }
	func increase()
	}

	/// Concrete implementation
	class MyViewModel: ViewModel {