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extension Task where Failure == Error {

  // Start a new Task with a timeout. If the timeout expires before the operation is 
  // completed then the task is cancelled and an error is thrown.
  init(priority: TaskPriority? = nil, timeout: TimeInterval, operation: @escaping @Sendable () async throws -> Success) {
    self = Task(priority: priority) {
      try await withThrowingTaskGroup(of: Success.self) { group -> Success in
        group.addTask(operation: operation)
        group.addTask {
          try await _Concurrency.Task.sleep(nanoseconds: UInt64(timeout * 1_000_000_000))

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import SwiftUI

enum HomeDestination: String, CaseIterable, Hashable {
  case hot, best, trending, new, top, rising
}
enum SubredditDestination: String, CaseIterable, Hashable {
  case news, diablo, pics, wtf, games, movies
}

enum UserDestination: String, CaseIterable, Hashable {

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// add child view
    UIViewController* controller = [self.storyboard instantiateViewControllerWithIdentifier:@"test"];
    [self addChildViewController:controller];
    controller.view.frame = CGRectMake(0, 44, 320, 320);
    [self.view addSubview:controller.view];
    [controller didMoveToParentViewController:self];

// remove child view
    UIViewController *vc = [self.childViewControllers lastObject];
    [vc.view removeFromSuperview];

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Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

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

import UIKit

class Todo{
    var tempId: UUID?
    var id : Int
    var title: String
    var isCompleted: Bool
    

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// put this in your AppDelegate
- (void)changeRootViewController:(UIViewController*)viewController {
    if (!self.window.rootViewController) {
        self.window.rootViewController = viewController;
        return;
    }
    
    UIView *snapShot = [self.window snapshotViewAfterScreenUpdates:YES];
    [viewController.view addSubview:snapShot];
    self.window.rootViewController = viewController;

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// put this in your AppDelegate
- (void)changeRootViewController:(UIViewController*)viewController {
    if (!self.window.rootViewController) {
        self.window.rootViewController = viewController;
        return;
    }
    
    UIView *snapShot = [self.window snapshotViewAfterScreenUpdates:YES];
    [viewController.view addSubview:snapShot];
    self.window.rootViewController = viewController;

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node_modules
*.swp

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Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

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What's the difference between UUID, GUID and UDID?

• UUID (Universally Unique Identifier): A sequence of 128 bits that can guarantee uniqueness across space and time, defined by [RFC 4122][rfc4122].

• GUID (Globally Unique Identifier): Microsoft's implementation of the UUID specification; often used interchangeably with UUID.

• UDID _(Unique Device Identifier)): A sequence of 40 hexadecimal characters that uniquely identify an iOS device (the device's Social Security Number, if you will). This value can be retrieved through iTunes, or found using UIDevice -uniqueIdentifier. Derived from hardware details like MAC address.

Is UDID deprecated?