This is all you need to do:
 
    $ xcode-select --install


You can select command line tools from the XCode Preferences shown in the screenshot below.

You will get a prompt for password.

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/shCHZ.png

1)

try typing in &quot;`xcode-select -print-path`&quot; and see if the path you see is the path you&#39;re expecting for your current Xcode version.

2)

If you go to:

https://developer.apple.com/downloads/

(you&#39;ll need to sign in with your Apple Developer account)

Once there, you&#39;ll see links for &quot;Command Line Tools&quot;.  It sounds like you need to [install MacOS 10.11 Command Line Tools for Xcode 7](http://adcdownload.apple.com/Developer_Tools/Command_Line_Tools_OS_X_10.11_for_Xcode_7/Command_Line_Tools_OS_X_10.11_for_Xcode_7.dmg).


Try:

`sudo xcode-select -r`

in this way it unsets any user-specified developer directory, so that the developer directory  will  be  found  via  the default  search  mechanism. 

If you have Catalina and Xcode 11 and you have this problem, then go to Xcode Preferences and select Location tab, check that the Command Line tool dropdown has Xcode 11.0 selected. If Xcode 11 is not there then you need to download and install Command-line tools for Xcode 11 here (choose the correct Beta)

https://developer.apple.com/download/more/?=command%20line%20tools


When a Python list is known to always contain a single item, is there a way to access it other than:

    mylist[0]

You may ask, &#39;Why would you want to?&#39;. Curiosity alone. There seems to be an alternative way to do *everything* in Python.

Getting only element from a single-element list in Python?

I wonder why a class `__dict__` is a `mappingproxy`, but an instance `__dict__` is just a plain `dict`

    &gt;&gt;&gt; class A:
    ...     pass

    &gt;&gt;&gt; a = A()
    &gt;&gt;&gt; type(a.__dict__)
    &lt;class &#39;dict&#39;&gt;
    &gt;&gt;&gt; type(A.__dict__)
    &lt;class &#39;mappingproxy&#39;&gt;

Why is a class __dict__ a mappingproxy?

I ran into this error trying to push to git, when I typed git init.

&gt; xcrun: error: invalid active developer path  
&gt; (/Library/Developer/CommandLineTools), missing xcrun at:
&gt; /Library/Developer/CommandLineTools/usr/bin/xcrun

I tried the following solutions.

```shell
xcode-select —install
sudo xcode-select -switch
sudo xcode-select —install
brew doctor
brew update
brew upgrade
brew cleanup
```

Invalid active developer path error after upgrading to El Capitan

I ran into this error trying to push to git, when I typed git init.
> xcrun: error: invalid active developer path 
> (/Library/Developer/CommandLineTools), missing xcrun at:
> /Library/Developer/CommandLineTools/usr/bin/xcrun
I tried the following solutions.
<pre><code class="hljs language-csharp">xcode-select —install
sudo xcode-select -switch
sudo xcode-select —install
brew doctor
brew update
brew upgrade
brew cleanup
</code></pre>

My Swift / iOS9 framework &#39;viewer_protocol&#39; uses another and external Objective-C framework ([CocoaAsyncSocket](https://github.com/robbiehanson/CocoaAsyncSocket)). I&#39;m using Carthage to build CocoaAsyncSocket. So far everything works fine: In have an example App inside my framework Xcode Project using my framework without any problems.

Now I want to use my Framework in a different Xcode Project - although using Carthage. I include only my Framework as a dependency and Carthage automatically resolves the dependencies to CocoaAsyncSocket. I embedded both frameworks into this new Xcode Project and build my App: Everything works fine here - except one warning I can&#39;t rid off:

    /Users/John/Repositories/my_project/&lt;module-includes&gt;:1:1: 
    Umbrella header for module &#39;my_project&#39; does not include header &#39;GCDAsyncSocket.h&#39;

This is my framework header: 
    
    #import &lt;UIKit/UIKit.h&gt;

    //! Project version number for my_project.
    FOUNDATION_EXPORT double my_projectVersionNumber;

    //! Project version string for my_project.
    FOUNDATION_EXPORT const unsigned char my_projectVersionString[];

    // In this header, you should import all the public headers of your framework     
    using statements like #import &lt;my_project/PublicHeader.h&gt;
    #import &lt;CocoaAsyncSocket/CocoaAsyncSocket.h&gt;

As you can see CocoaAsyncSocket.h is imported. Furthermore inside my framework the CocoaAsyncSocket.h file is included:

[![my framework&#39;s folder](https://s15.postimg.cc/vqx0uj83b/2015_10_03_at_15_51.jpg)](https://postimg.cc/image/vqx0uj83b/)

What I am missing here? I&#39;m using several others external frameworks inside my framework, there&#39;re no warnings for them - all of these external frameworks are written in Swift - CocoaAsyncSocket is pure Objective-C.

This is my frameworks module.modulemap:

     framework module my_project {
       umbrella header &quot;my_project.h&quot;

       export *
       module * { export * }
     }

     module viewer_protocol.Swift {
         header &quot;my_project-Swift.h&quot;
     }




**Update**

I found a solution: Changing the import statement in my framework header from

    #import &lt;CocoaAsyncSocket/CocoaAsyncSocket.h&gt;

to

    #import &quot;CocoaAsyncSocket/CocoaAsyncSocket.h&quot;

Now Xcode finds the header file and the warning disappears.



umbrella header for module &#39;myFramework&#39; does not include header &#39;otherFramework.h&#39;

I&#39;ve tried setting attributes in the `XCUIApplication` instance, in my UI Tests `setUp()`

    let app = XCUIApplication()
    app.launchEnvironment = [&quot;testenv&quot; : &quot;testenvValue&quot;]
    app.launchArguments = [&quot;anArgument&quot;]
    app.launch()

in `didFinishLaunch` I&#39;ve tried to show these on screen when I run my UITests
 

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool {
        if launchOptions != nil {
            for (key, value) in launchOptions! {  
                let alertView = UIAlertView(title: key.description, message: value.description, delegate: nil, cancelButtonTitle: &quot;ok&quot;)
                alertView.show()
            }
        }

But I can&#39;t seem to be able to find the arguments and environment I set. Anyone know how to get a hold of them?

How to access launchEnvironment and launchArguments set in XCUIApplication, running UI tests in XCode?

I want to remove the text from the back button, but I want to keep the icon. I have tried 

    let backButton = UIBarButtonItem(title: &quot;&quot;, style: UIBarButtonItemStyle.Plain, target: navigationController, action: nil)
    navigationItem.leftBarButtonItem = backButton

However, this removes completely the text and the icon. 

Remove text from Back button keeping the icon

I&#39;ve created new Cocoa Touch File. Named it SwipingViewController.
![enter image description here][1]

Then try to add Custom Class to ViewController.

And when I run the app I receive an error
&gt;**2015-10-09 10:53:25.054 ParseStarterProject[5369:389307] Unknown class SwipingViewController in Interface Builder file.**

![Unknown class SwipingViewController in Interface Builder file][2]

Related:
https://stackoverflow.com/questions/24924966/xcode-6-strange-bug-unknown-class-in-interface-builder-file

Here is my [projects files][3]


  [1]: https://i.stack.imgur.com/rSGPF.png
  [2]: https://i.stack.imgur.com/7zqE8.png
  [3]: https://www.dropbox.com/s/8d2o2vugrfh5no6/Tinder%202.zip?dl=0

Xcode 7.1 Swift 2 Unknown class in Interface Builder file

I have already searched and almost implemented max solution but it&#39;s not installing any app even though if I am creating just sample single view app.

&gt;**App installation failed**  
&gt;A valid provisioning profile for this executable was not found.

[![enter image description here][1]][1]

  [1]: http://i.stack.imgur.com/TU8NJ.png


Xcode 7: App installation failed: A valid provisioning profile for this executable was not found

I&#39;m very new to Git, so facing some issues with it correct usage.
Here is my scenario.

I have a fork of my master repository and cloned it into my local.
In that, I have 2 branches for different fixes.

When I commit, I saw a statement in the git-we saying that I&#39;m 3 commits ahead and around 20 commits behind.

I understand that my fork is not in sync with master. Also I need to merge the two branches too (or should i do it?)

I used the windows client to syncing. But seems I&#39;m not following the Git way. So, I tried to follow the steps described in https://help.github.com/articles/syncing-a-fork/ which is giving me an error as follows  (I&#39;m using windows).

     $&gt;git fetch upstream
     fatal: &#39;upstream&#39; does not appear to be a git repository
     fatal: Could not read from remote repository.

     Please make sure you have the correct access rights
     and the repository exists.

I&#39;m a bit confused.
Please help me with steps I should follow in this scenario.

@HuStmpHrrr

Sorry for adding the details in comments
I&#39;ll modify the question for readability

By executing the command:

      $&gt;git remote  returning two values
      acme-development (which the name of my actual/main repository, from where I forked) and
      origin


----------


**Adding some more info.**


----------


After making a fetch, I tried a origin/master merge on to my master
Please see the screenshot
[![enter image description here][1]][1]

But, if I login to my Github online account, it is saying a different story.

[![enter image description here][2]][2]

My git client says that **the local repo is up to date**.
But the online git says that we are 42 commits behind and 7 commits ahead.



  [1]: http://i.stack.imgur.com/9WeWi.png
  [2]: http://i.stack.imgur.com/P0YrD.png

Git Error : &#39;upstream&#39; does not appear to be a git repository

IntelliJ supports git stashes as well as it&#39;s own built in shelve command. These seem to be almost identical in purpose and utility. What is the difference between them?

What is the difference between IntelliJ&#39;s Shelve and Git stash?

Here is my case:

 - I was working on one branch.
 - Pushed new commits to the remote.
 - Switched back to the master branch. 

But suddenly after typing `git checkout master` command my computer encountered [blue screen of death][1] and an unexpected force shut down happened. After starting back my computer I have checked the status of my current branch and as a result I got each and every file as marked new files.

Now, I am stuck at this point and after `git log` command I am getting error 

    $ git log
    fatal: your current branch appears to be broken

How to solve this problem and recover my branch?.

I am working with windows 7 and git bash latest version

&gt; Edit: **I don&#39;t want to delete this branch.**


  [1]: https://en.wikipedia.org/wiki/Blue_Screen_of_Death

Broken branch in git, fatal: your current branch appears to be broken

I have a [Github repo][1] and pushed tags on it.

This is my gradle file of my main project.

    apply plugin: &#39;com.android.application&#39;
    
    android {
        compileSdkVersion 23
        buildToolsVersion &quot;23.0.0&quot;
    
        defaultConfig {
            applicationId &quot;dropbox.ric.es.myapplication&quot;
            minSdkVersion 16
            targetSdkVersion 23
            versionCode 1
            versionName &quot;1.0&quot;
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile(&#39;proguard-android.txt&#39;), &#39;proguard-rules.pro&#39;
            }
        }
    }
    
    repositories {
        //mavenCentral()
        //jcenter()
    
        maven { url &quot;https://jitpack.io&quot; }
    
    }
    
    dependencies {
        compile fileTree(dir: &#39;libs&#39;, include: [&#39;*.jar&#39;])
        compile &#39;com.android.support:appcompat-v7:23.0.1&#39;
        compile &#39;com.github.rchampa:DropboxHttpConector:1.0.1&#39;
    }


But when I sync gradle I have the following error `Failed to resolve com.github.rchampa:DropboxHttpConector:1.0.1`

Another attempt:

    allprojects {
        repositories {
            jcenter()
            maven { url &quot;https://jitpack.io&quot; }
        }
    }
    
    dependencies {
        compile fileTree(dir: &#39;libs&#39;, include: [&#39;*.jar&#39;])
        compile &#39;com.android.support:appcompat-v7:23.0.1&#39;
        compile &#39;com.github.rchampa:DropboxHttpConector:1.0.1&#39;
    }

Still failing.

  [1]: https://github.com/rchampa/DropboxHttpConector/releases/tag/1.0.1

jitpack.io failed to resolve github repo

I wished to download the mysite folder from this link:
https://github.com/username/repository/master/

Content Type	Original Author	Original Content on Stackoverflow
Question	jhnath	View Question on Stackoverflow
Solution 1 - Xcode	Arcolye	View Answer on Stackoverflow
Solution 2 - Xcode	nikhilgohil11	View Answer on Stackoverflow
Solution 3 - Xcode	Michael Dautermann	View Answer on Stackoverflow
Solution 4 - Xcode	r4m	View Answer on Stackoverflow
Solution 5 - Xcode	Hassan Hussein	View Answer on Stackoverflow

Invalid active developer path error after upgrading to El Capitan

Xcode Problem Overview

Xcode Solutions

Solution 1 - Xcode

Solution 2 - Xcode

Solution 3 - Xcode

Solution 4 - Xcode

Solution 5 - Xcode

Why is a class dict a mappingproxy?

Getting only element from a single-element list in Python?

Attributions