macbook – Development of mobile applications using Xcode. Unique graphics vs. dual graphics?

In general terms, a more recently introduced model is equipped with better internal components (such as a new generation of processors and a faster RAM / internal storage).

You must pay attention to the specifications of the machine and its use case to choose the right one, since it can vary from one person to another and from one task to another. You should base your decision on criteria such as:

Can someone tell me which one is better for Xcode depending on the year?

It depends on your specific use case (and budget) as discussed above. You can compare the detailed specifications of the two mentioned models and base your decision on that. Check the following link:

Also, what is the difference between simple and dual graphics?

A MacBook with dual graphics literally means that it is equipped with a dual graphics card. The one with a single graphics card comes equipped with Intel Integrated Graphics (which is generally speaking good for daily use). Dual Graphics MacBook Pro includes a dedicated graphics card in addition to the Intel Integrated card, and the operating system includes support for automatic switching between the two.

A dual graphics machine is preferred when you need good performance on tasks / projects with intensive graphics, games or a project that needs to use the GPU calculation.

Xcode 11: How to enable / fix the live interactive preview option of Xcode (for the live preview attached on an Apple device)? [migrated]

I am trying to get the Interaction of my swiftUI interface live on my attached iPad Pro (with iOS 13) but it does not work. You can see in the screenshot that it is disabled (grayscale) (in WWDC it was blue). Is this an error or is I missing a step?

The[[ screenshot 1]
screenshot 2

xcode: Beta command line tools offered as an update, why?

Today, the App Store offers me the command line tools for Xcode 10.0 beta 1.

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I do not remember logging in as a beta tester for any Apple software. Why do I receive this update and how can I prevent such beta software from accidentally installing on my system?

I have macOS 10.13.5 and Xcode 9.4. I also have MacPorts with clang 6.0 (newer than Xcode, but it should not interfere).

Update 2019-06-04: It's happening again, this time it's offering "Command Line Tools beta 1 for Xcode 11.0". This seems to be an error on Apple's part again (see the accepted response).

mojave – Xcode 10.2 does not open after installation from the App Store

When I try to open Xcode 10.2 after installing it from the App Store, it does not open. After a while, a dialog box comes up with an error "check with the developer to make sure Xcode works with this version of Mac OS."

Can someone help? My Mac OS is Mojave

How to configure the external compilation system of Xcode to compile and clean using standard shortcuts?

[Xcode 10.1, MacOS 10.14.1]

I have a project that uses. bmake (could be any do though) and the Makefile provides a series of objectives. I would like to use Xcode to build host and clean the compilation folder, but I have trouble figuring out how to configure Xcode to allow this.

From the command line, I would build using bmake host and clean using bmake clean. The reason why I'm using Xcode for this is because I like to use an IDE for debugging.

In Project -> Information (External compilation tool configuration), I have:

Compilation tool: / usr / local / bin / bmake
Arguments: host
Directory: None <- I am using the current route

With these adjustments, Product -> Build build my goal, but Product -> Clean construction folder It does not do anything even though Xcode reports that the cleanup was successful.

To do a cleaning, I have to define another goal with the Arguments field established in clean and then switch between objectives when building / cleaning, or, using a single objective and changing the argument field depending on whether I am building or cleaning. (A really awkward way to do it)

If I go Arguments with its default value $ (ACTION) all the objectives are built (except to clean), and cleaning is useless.

I read but that question does not address this problem.

Is there a better way to do this?

The Xcode 10 library was not found

I am having an error after updating xcode 10.2.1. In the latest version of xcode, the application worked fine, but now it did not work … the error is as follows:

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Error when archiving from the Xcode project

I can not archive from an Xcode project. The compilation is failing with the following error:

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How do I solve it?

terminal – How to execute an equivalent function of the Xcode instruments> "File activity" in shell?

Have you tried fs_usage with the -f filesys or diskio option?


The fs_usage utility presents a continuous display of the system's call usage information pertaining to the file system activity. Requires root privileges due to the
Ease of tracking the core you use to operate. By default, the monitored activity includes all system processes, except the running fs_usage process, Terminal,
telnetd, telnet, sshd, rlogind, tcsh, csh, sh and zsh. These default values ​​can be overridden so that the output is limited to include or exclude a list of
Assignments specified by the user.

Do I update the command line tools for XCode but still ask to be updated?

I am having problems with the command line tools for the Xcode software update that will not disappear even after downloading them. I was planning to download XCode anyway and it coincided with when this update appeared, so here is the order in which I did things:

1) Software update requested from command line tools for XCode 10.2 for mojave macOS
2) I downloaded XCode 10.2 (totally coincidentally)
3) According to that software update

However, when it finishes downloading and installing, it looks for new software updates and the same update reappears (I assume it is the same update because it has the same size of 203.9MB). I should have downloaded & # 39; this update six times and keeps reappearing, asking to be updated.

Could this have something to do with the Xcode download between the request and the download? It's a small thing at the end of the day: I just want the software request notification to disappear!

Thanks in advance!

mac – How to build Apple's "Open Source" projects in Xcode 10

I want to compile the kext IOSerialFamily package on my own machine (OSX 10.14.4) using Xcode 10.2. I downloaded the source file from Apple's open source repository, but even though the project contains a .xcodeproj file is obviously not configured to compile on a personal machine. The project does not use the public SDK, but uses a macosx.internal SDK that I assume is available only to Apple employees.

I changed it to use the SDK installed, but many problems arose. For example, the "internal" SDKs sys / tty.h file must contain a full definition of tty structure, whereas the public SDK only contains a forward statement of the structure. I suspect that I can patch in the kernel version of darwin-xnu, but that would only solve one of the many errors. I am looking for a solution that will help me solve all of them simultaneously.

Does anyone have any experience compiling these "Open Source" projects? How can I configure my environment to do this? Do I have to pass and carefully cut every single compiler error? Is there any other place where I can get a working copy of the kext source from IOSerialFamily that will be Compile on a machine with the public SDK?