天下网吧消息，今天苹果公司除了推送macOS12.4正式版吧外，还推送了Xcode的13.4版吧的更新：

Xcode 13.4更新包12.6GB

更新了大量的SDK版本，以下是官方更新日志：

Xcode 13.4 includes SDKs for iOS 15.5, iPadOS 15.5, tvOS 15.4, watchOS8.5, and macOS Monterey 12.3, and bug fixes.

天下网吧了解到XCode是Apple官方的开发工具。下面是其介绍：

Xcode includes everything developers need to create great applications for Mac, iPhone, iPad, Apple TV, and Apple Watch. Xcode provides developers a unified

workflow for user interface design, coding, testing, and debugging. The Xcode IDE combined with the Swift programming language make developing apps easy

and fun.

Xcode includes the Xcode IDE, Swift and C/C++/Objective-C compilers, Instruments analysis tool, simulators, the latest SDKs, and hundreds of powerful features:

Innovative tools help you create great apps

• Swift is an intuitive programming language that is safe, fast, and modern

• SwiftUl is a revolutionary framework to create user interfaces with a declarative Swift syntax

• Playgrounds are a fun way to experiment and interact with Swift code

• View debugging shows a 3D stack of all your app's UI view layers at runtime

• Split editors in virtually unlimited ways, show previews, or choose an assistant to see related content

• Live issues display errors as you type, and Fix-its improve your code with just a click

• Source control navigator and service integrations help you manage code across a team

SwiftUl and Interface Builder make it easy to design your interface

• SwiftUI uses declarative Swift code that clearly describes your interface

• Design canvas graphically builds UI views using the library of controls and modifyers

• Preview SwiftUI code or UlKit interfaces in different screen sizes, orientations, and font sizes

• SwiftUI code is always in perfect sync with the graphical design canvas and previews

• Animations are built using simple commands that describe the action you want to see

Professional editor and debugger keep your code front and center

• Refactoring makes it easy to modify the structure of Swift, Objective-C, C, and C++ code

• Open Quickly instantly opens any file within your project

• Data tips and Quick Look can inspect a variable by hovering your mouse over code while debugging

Instruments for performance analysis

• Compare CPU, disk, memory, and GPU performance as graphical tracks over time

• Identify performance bottlenecks, then dive deep into the code to uncover the cause

• Analyze your app directly, or sample the entire system with very little overhead

• Create custom instruments with unique visualizations to analyze your own code and frameworks