It is possible with Xcode 10+, see the [wwdc2018 presentation of the functionality][1]. 

Ways to create multiple cursors:

&gt;  - &lt;kbd&gt;⇧ Shift&lt;/kbd&gt; + &lt;kbd&gt;⌃ Control&lt;/kbd&gt; + &lt;kbd&gt;Left Mouse Click&lt;/kbd&gt;: Will create a new cursor on every click
&gt;  - &lt;kbd&gt;⇧ Shift&lt;/kbd&gt; + &lt;kbd&gt;⌃ Control&lt;/kbd&gt; + &lt;kbd&gt;↑&lt;/kbd&gt;: Will create a new cursor above
&gt;  - &lt;kbd&gt;⇧ Shift&lt;/kbd&gt; + &lt;kbd&gt;⌃ Control&lt;/kbd&gt; + &lt;kbd&gt;↓&lt;/kbd&gt;: Will create a new cursor bellow
&gt;  - &lt;kbd&gt;⌥ Option&lt;/kbd&gt; + drag: Will create a new cursor on every line you drag

preview:

[![enter image description here][3]][3]


For more information, see [this answer][2]


  [1]: http://developer.apple.com/videos/play/wwdc2018/102/?time=2518
  [2]: https://stackoverflow.com/a/50697236/386738
  [3]: https://i.stack.imgur.com/96Qfw.gif

I&#39;m not sure how helpful this is to you, but if you want to change a variable name, you can click it, hover over it until the triangle dropdown button appears, click it and select Edit All in Scope.

This allows you to change all instances of that variable name.

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/EbDL7.png

Multiline editing is supported in Xcode 10, Ctrl + Shift + click the lines you want to edit.

Select the line you want to edit, then press option + command for a moment 
[![demo][1]][1]


  [1]: https://i.stack.imgur.com/9EosX.gif

I had this same question a few weeks ago, if you use the Option Key you can use column select and edit multiple lines like in your picture. 
Where the confusion comes in is it is used for multiple things. If you click the option key over a variable or text it shows a question mark and shows information about what you click on. However, if you hold the option key while before the line or not over text it shows up as a plus symbol and you can drag and select multiple lines and edit them at the same time.

I&#39;m building a simple app in React Native that fetches listings from a remote JSON source and displays them on screen. 

So far, using the excellent [example][1] here, I&#39;ve managed to get the results to display using the ListView components in rows (i.e. 1 result per row, see screenshot). I need the results to display in a grid, i.e. 3 to 6 items per row, depending on the screen size and orientation.

What is the best way to get these results into a grid? Can I use ListView for this, or is that only for one-per-row results? I&#39;ve tried playing around with flexbox styles but, since React doesn&#39;t seem to accept % values and ListView doesn&#39;t accept styles, I haven&#39;t yet had any success.

![This is how my listings are displaying at the moment - one per row.][2]


  [1]: http://www.raywenderlich.com/99473/introducing-react-native-building-apps-javascript
  [2]: http://i.stack.imgur.com/fltS3.png

ListView grid in React Native

I have a huge data set and prior to machine learning modeling it is always suggested that first you should remove highly correlated descriptors(columns) how can i calculate the column wice correlation and remove the column with a threshold value say remove all the columns or descriptors having  &gt;0.8 correlation.  also it should retained the headers in reduce data.. 

Example data set 

     GA      PN       PC     MBP      GR     AP   
    0.033   6.652   6.681   0.194   0.874   3.177    
    0.034   9.039   6.224   0.194   1.137   3.4      
    0.035   10.936  10.304  1.015   0.911   4.9      
    0.022   10.11   9.603   1.374   0.848   4.566    
    0.035   2.963   17.156  0.599   0.823   9.406    
    0.033   10.872  10.244  1.015   0.574   4.871     
    0.035   21.694  22.389  1.015   0.859   9.259     
    0.035   10.936  10.304  1.015   0.911   4.5       
    

Please help.... 

How to calculate correlation between all columns and remove highly correlated ones using pandas?

I&#39;m sorry, I don&#39;t find an already asked question for this problem...
 
in Xcode, what is the shortcut to edit multiples lines like the &quot;CMD+click&quot; of sublime text?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/sUutr.png

How edit multiple lines on Xcode (shortcut)

I'm sorry, I don't find an already asked question for this problem...
in Xcode, what is the shortcut to edit multiples lines like the "CMD+click" of sublime text?
<img src="http://i.stack.imgur.com/sUutr.png" alt="enter image description here">

How can I make a countdown with an `NSTimer` using Swift?

How can I make a countdown with NSTimer?

I have a view controller that is the detail view of a table.  When you click on the row of the table it takes you to the detail view.  The detail view is embedded in a navigation controller such that there is a button at the upper left of the navigation bar that sends you back to the table.  So far so good.

I now want to add an edit button to the right side of the navigation bar so that you can edit the detail view.  My plan is this will add another view controller modally that lets you edit the details of the item.  Standard stuff.

However, when I try to drag a bar button item from the list of objects to the navigation bar, it won&#39;t take.  Instead, when I let go off the mouse button, it leaves the bar button on the tab bar controller at the bottom.  (My navigation scheme includes different tabs and for each tab a table, detail view etc.)

Anyone run across this before and can suggest what I&#39;m doing wrong or some sort of workaround to add the bar button item to the right side of the navigation screen.  Do I have to add it in code?

Thanks for any suggestions.

xcode/storyboard: can&#39;t drag bar button to toolbar at top

I have just developed an app, but when running in the simulator the debugger console says:

 &gt; The app delegate must implement the window property if it wants to use
    a main storyboard file.

I have an app delegate file. What does the message mean, and how can I get my app working?

The app delegate must implement the window property if it wants to use a main storyboard file swift

Problem: I cannot simulate an Apple watch interface. Whenever I try and test my Apple watch app on the iPhone 6 simulator, Xcode successfully finishes and builds the app, attempts at opening simulator and fails with an error message which reads &#39;Invalid Device State&#39;.

[![Screenshot added][1]][1]

I believe simulator has a watch simulator that opens along with the compatible iPhone simulator models that can communicate with Apple watch (example: iPhone 6) Although I have yet to see it work. I have built a universal interface for iPad and iPhone and another for the watch, so it&#39;s not a matter of the app being for the wrong device. Whenever I test on my actual iPhone I can test the universal interface successfully.

I&#39;m using Xcode 6.2 on iMac OS X 10.10.3

I have tried restarting Xcode/Computer. I can&#39;t seem to find any other mention of &#39;Invalid Device State&#39; anywhere, hopefully due to it being an obvious thing to avoid/fix that I&#39;ve overlooked. Any help would be appreciated.


  [1]: http://i.stack.imgur.com/qfwnL.png

Invalid Device State - Xcode/iOS Simulator error

I was about to upload an app to iTunes connect, but the application loader has been stuck at the stage of &quot;Verifying assets with the iTunes Store&quot; and pending for almost an hour. Network is fine and I have never seen this before.Has anybody encountered this kind of issue? what is the solution?thanks in advance.


Application loader stuck at the stage of “Verifying assets with the iTunes Store”

There is a lot of information about adding libraries and dependencies, but I haven&#39;t been able to find any useful information on being able to actually edit a library.

I have added https://github.com/jdamcd/android-crop as a dependency in my project, but I would like to edit some of its features, mostly layout related stuff. However, when I go into browse the files Android Studio says 
&quot;files under the build folder are generated and should not be edited&quot; and when I edit them they are returned back to their pre-edited state once the system builds. 

I also tried editing the files in notepad++ and the same problem occurs (they are returned to their pre-edited state on build). 

Can someone tell me either how to edit the library or a workaround whereby I can change the layouts/some java without having to copy and paste the entire library into my project to make it editable? 

Thanks in advance, 

God speed. 

**Edit: The answer is instead of simply adding the library as a dependency in the build.gradle file using this code:  compile &#39;com.soundcloud.android:android-crop:0.9.10@aar&#39;**

**You have to add it as a module instead of just an external dependency, then you can edit the files.**

**If anyone is wondering how follows these steps:**

1.	Create library folder (call it whatever you want) in the root directory, i.e. the first folder you go into to get to the app and its contents. 
2.	Download the library, unzip it.
3.	Put the folder from step 2 in the folder you created in step 1. 
4.	Add the module to the `settings.gradle` like so: 
`include &#39;:LibraryContainingFolder:ActualLibFolder&#39;`
5.	Sync and clean
6.	Go to project structure in Android Studio, click on the main module, normally called app, click on dependencies tab, then click the green plus, then click &quot;Module dependency&quot;.
The module should appear written as the containing folder and the library folder in it separated by colons &#39;something:somethingElse&#39;. Add the module. 
7.  Sync, clean, buid etc.



 

How do you edit a dependency/external library in android studio?

I successfully shelled to a Docker container using:

    docker exec -i -t 69f1711a205e bash

Now I need to edit file and I don&#39;t have any editors inside:

    root@69f1711a205e:/# nano
    bash: nano: command not found
    root@69f1711a205e:/# pico
    bash: pico: command not found
    root@69f1711a205e:/# vi
    bash: vi: command not found
    root@69f1711a205e:/# vim
    bash: vim: command not found
    root@69f1711a205e:/# emacs
    bash: emacs: command not found
    root@69f1711a205e:/#

How do I edit files?


How do I edit a file after I shell to a Docker container?

I want my .bat script (test.bat) to create a shortcut to itself so that I can copy it to my windows 8 Startup folder. 

I have written this line of code to copy the file but I haven&#39;t yet found a way to create the said shortcut, as you can see it only copies the script.
 
    xcopy &quot;C:\Users\Gabriel\Desktop\test.bat&quot; &quot;C:\Users\Gabriel\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup&quot;

Can you help me out?

How do I create a shortcut via command-line in Windows?

Just tired of typing `console.log` again and again, and do not find a way like `Sysout + Control + Space` in Eclipse will create `System.out.println()`.

Does webstorm have some shortcut for console.log or console.info?

How to select multiple places in code in Android Studio ?

I want to insert the same text in multiple places in my source code. Like a have more than one mouse cursor. I used to do it in VS2012 so easily though not sure how to do it in Android Studio ?

How to select multiple places (sublime) in code in Android Studio?

In Visual Studio Professional, we have a shortcut key, &lt;kbd&gt;Ctrl&lt;/kbd&gt; + &lt;kbd&gt;M&lt;/kbd&gt; &lt;kbd&gt;Ctrl&lt;/kbd&gt;  + &lt;kbd&gt;O&lt;/kbd&gt; to collapse all methods and properties in a class. How can I do a similar thing in Visual Studio Code?

I know there are shortcut keys like &lt;kbd&gt;Ctrl&lt;/kbd&gt; + &lt;kbd&gt;Shift&lt;/kbd&gt; + &lt;kbd&gt;[&lt;/kbd&gt;, but this does not meet the needs.

Is it possible to get the Visual Studio Professional-like behaviour in Visual Studio Code?


Collapse all methods in Visual Studio Code

In previous Xcode version , I could jump to definition with simple 
**Cmd + click** on that method/variable . 
But in Xcode 9, I feel uncomfortable to jump to definition . 

Does anyone has a better solution for jumping to definition in Xcode 9 ?

I am tired of selecting options from dropdown list.

iOS - Shortcut for jumping to definition in Xcode 9?

I want to write a program that gets multiple line input and work with it line by line. Why there is no function like `raw_input` in Python 3? 

`input` does not allow user to put lines separated by newline (&lt;kbd&gt;Enter&lt;/kbd&gt;), it prints back only the first line.


Can it be stored in variable or even read it to a list?

How to get multiline input from user

What is a clean way to create a multi-line `with` in python? I want to open up several files inside a single `with`, but it&#39;s far enough to the right that I want it on multiple lines. Like this:

    class Dummy:
        def __enter__(self): pass
        def __exit__(self, type, value, traceback): pass
    
    with Dummy() as a, Dummy() as b,
         Dummy() as c:
        pass

Unfortunately, that is a `SyntaxError`. So I tried this:

    with (Dummy() as a, Dummy() as b,
          Dummy() as c):
        pass

Also a syntax error. However, this worked:

    with Dummy() as a, Dummy() as b,\
         Dummy() as c:
        pass

But what if I wanted to place a comment? This does not work:

    with Dummy() as a, Dummy() as b,\
         # my comment explaining why I wanted Dummy() as c\
         Dummy() as c:
        pass

Nor does any obvious variation on the placement of the `\`s.

Is there a clean way to create a multi-line `with` statement that allows comments inside it?

Python multi-line with statement

C# 6 brings compiler support for interpolated string literals with syntax:

    var person = new { Name = &quot;Bob&quot; };

    string s = $&quot;Hello, {person.Name}.&quot;;

This is great for short strings, but if you want to produce a longer string must it be specified on a single line?

With other kinds of strings you can:

        var multi1 = string.Format(@&quot;Height: {0}
    Width: {1}
    Background: {2}&quot;,
            height,
            width,
            background);

Or:

    var multi2 = string.Format(
        &quot;Height: {1}{0}&quot; +
        &quot;Width: {2}{0}&quot; +
        &quot;Background: {3}&quot;,
        Environment.NewLine,
        height,
        width,
        background);

I can&#39;t find a way to achieve this with string interpolation without having it all one one line:

    var multi3 = $&quot;Height: {height}{Environment.NewLine}Width: {width}{Environment.NewLine}Background: {background}&quot;;

I realise that in this case you could use `\r\n` in place of `Environment.NewLine` (less portable), or pull it out to a local, but there will be cases where you can&#39;t reduce it below one line without losing semantic strength.

Is it simply the case that string interpolation should not be used for long strings?

Should we just string using `StringBuilder` for longer strings?

    var multi4 = new StringBuilder()
        .AppendFormat(&quot;Width: {0}&quot;, width).AppendLine()
        .AppendFormat(&quot;Height: {0}&quot;, height).AppendLine()
        .AppendFormat(&quot;Background: {0}&quot;, background).AppendLine()
        .ToString();

Or is there something more elegant?

Multiline C# interpolated string literal

I have recently started studying shell script and I&#39;d like to be able to comment out a set of lines in a shell script. I mean like it is in case of C/Java :
 

    /* comment1
       comment2 
       comment3
    */`
How could I do that?

Way to create multiline comments in Bash?

Given a command that takes a single long string argument like:

&lt;!-- language-all: lang-bash --&gt;

    mycommand -arg1 &quot;very long string which does not fit on the screen&quot;

is it possible to somehow split it in a way similar to how separate arguments can be split with `\`.

I tried:

```bash
mycommand -arg1 &quot;very \
long \
string \
which ...&quot;
```
but this doesn&#39;t work.

`mycommand` is an external command so cannot be modified to take single arguments.



Content Type	Original Author	Original Content on Stackoverflow
Question	Damien Romito	View Question on Stackoverflow
Solution 1 - Xcode	Daniel	View Answer on Stackoverflow
Solution 2 - Xcode	Jace Tan	View Answer on Stackoverflow
Solution 3 - Xcode	RoyR	View Answer on Stackoverflow
Solution 4 - Xcode	Gpx	View Answer on Stackoverflow
Solution 5 - Xcode	Zack	View Answer on Stackoverflow

How edit multiple lines on Xcode (shortcut)

Xcode Problem Overview

Xcode Solutions

Solution 1 - Xcode

Solution 2 - Xcode

Solution 3 - Xcode

Solution 4 - Xcode

Solution 5 - Xcode

How to calculate correlation between all columns and remove highly correlated ones using pandas?

ListView grid in React Native

Attributions