Select the class name.

`Refactor &gt; Move` or press `F6`

Select &quot;Move inner class Foo to upper level&quot;

I noticed that Xcode 7 creates a new `.xcscmblueprint` file in the `xcshareddata` folder. Will it be always auto generated? Should this file be added to the ignore list of the repository, or should it be checked in into repository? 

Xcode 6 has the `.xccheckout` file, I&#39;ve always gitignore&#39;d that file.

Xcode 7: ignore .xcscmblueprint in repository?

Just opened up VS 2015 Enterprise RTM, opened up an existing working project, getting the following error:

&gt;  ---------------------------
&gt; Microsoft Visual Studio
&gt;  ---------------------------
&gt; The &#39;NuGetPackage&#39; package did not load correctly. 
&gt; 
&gt; The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file `C:\Users\REDACTED\AppData\Roaming\Microsoft\VisualStudio\14.0\ActivityLog.xml`.
&gt;
&gt; Restarting Visual Studio could help resolve this issue.
&gt;
&gt; Continue to show this error message?
&gt;  ---------------------------
&gt; [Yes]   [No]
&gt;  ---------------------------

Restarting didn&#39;t help. I&#39;ve examined the log file, and found the following sections relevant to nuget:


&lt;!-- language: lang-xml --&gt;

    &lt;entry&gt;
      &lt;record&gt;555&lt;/record&gt;
      &lt;time&gt;2015/07/20 16:06:34.364&lt;/time&gt;
      &lt;type&gt;Error&lt;/type&gt;
      &lt;source&gt;Extension Manager&lt;/source&gt;
      &lt;description&gt;Extension will not be loaded because an extension with the same ID 
         &amp;apos;Microsoft.Dev14.VsixTemplatesPackage.443cca91-ec20-41e5-a165-f28e56b89650&amp;apos; 
         is already loaded at C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\
         EXTENSIONS\G2URSPAC.VAZ\...&lt;/description&gt;
      &lt;path&gt;C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\EXTENSIONS\
         NUGETIFIEDEXTENSIBILITYTEMPLATES\&lt;/path&gt;
    &lt;/entry&gt;
    &lt;entry&gt;
      &lt;record&gt;556&lt;/record&gt;
      &lt;time&gt;2015/07/20 16:06:34.364&lt;/time&gt;
      &lt;type&gt;Error&lt;/type&gt;
      &lt;source&gt;Extension Manager&lt;/source&gt;
      &lt;description&gt;Extension will not be loaded because an extension with the same ID
         &amp;apos;Microsoft.VisualStudio.TeamFoundation.TeamExplorer.Extensions&amp;apos; is already
         loaded at C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\EXTENSIONS\
         B1NUOYPH.H2N\...&lt;/description&gt;
      &lt;path&gt;C:\PROGRAM FILES (X86)\MICROSOFT VISUAL STUDIO 14.0\COMMON7\IDE\COMMONEXTENSIONS\
         MICROSOFT\TEAMFOUNDATION\TEAM EXPLORER\&lt;/path&gt;
    &lt;/entry&gt;

Which would suggest a duplicate extension, but this doesn&#39;t seem to be the case in the extensions manager.

This is on a machine that also has VS2013 installed. It has not had any of the preview/RC builds of VS2015 installed ever.

VS2015 - The &#39;NuGetPackage&#39; package did not load correctly

How does one who is using IntelliJ or Android Studio extract a public static inner class to create a new top level class?

Thank you.

Intellij Extract Inner Class

<p>How does one who is using IntelliJ or Android Studio extract a public static inner class to create a new top level class?</p>
<p>Thank you.</p>


I&#39;m using **GIT** and am trying to push my code and getting the following error when using the ***Terminal***. I don&#39;t use **XCode**, I&#39;m using ***Android Studio***.

The command I tried using was: 

&gt; git branch Networking

Error:

&gt; xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun`

I am running on **El Capitan Beta 4** update if that helps in any way.

---

&gt; **Update**: This also happens for **IntelliJ** users, and for **MacOS
&gt; Catalina** update

change xcrun developer path for Android Studio/IntelliJ

I try to change `minSdkVersion` in `build.gradle` (Module: app) in `Android Studio` and get next error:

    Error:Timeout waiting to lock buildscript class cache for build file &#39;E:\pathtoproject\app\build.gradle&#39; (C:\Users\Administrator\.gradle\caches\2.2.1\scripts\build_f00bwdji3qxl7urq5chsbakgv\ProjectScript\buildscript). It is currently in use by another Gradle instance.
    Owner PID: unknown
    Our PID: 4592
    Owner Operation: unknown
    Our operation: Initialize cache
    Lock file: C:\Users\Administrator\.gradle\caches\2.2.1\scripts\build_f00bwdji3qxl7urq5chsbakgv\ProjectScript\buildscript\cache.properties.lock

**What is it error? How to change `minSdkVersion` ?**

Error:Timeout waiting to lock buildscript class cache for build file when change minSdkVersion

I have updated my Android Studio to version **1.3.0** before 3 days.

Before that I can use NDK and now I am getting error like ,

&gt;Error:(50, 0) Error: NDK integration is deprecated in the current plugin.  Consider trying the new experimental plugin.  For details, see http://tools.android.com/tech-docs/new-build-system/gradle-experimental.  Set &quot;android.useDeprecatedNdk=true&quot; in gradle.properties to continue using the current NDK integration.

I can not find file gradle.property at project level.

How can I solve this error?

After updating Android Studio to version 1.3.0 I am getting &quot;NDK integration is deprecated in the current plugin&quot; Error

I just started using Android Studio 1.3 sdk 24 and it has worked fine until today. I get this error message about cache.properties and I delete that cache file but now I am getting this error message:          

   &gt;Error:C:\Users\user1\.gradle\caches\2.4\scripts\asLocalRepo15_dhjxrnvsgiyg1ow3dfj4myl7\InitScript\initscript\cache.properties (The system cannot find the file specified)       

I try file/invalidate caches/restart.. and rebuild project but am still getting this error message. How do I fix it?

Cache.properties (The system cannot find the file specified)

I&#39;ve always programmed Android with Eclipse and decided to start migrating to [Android Studio][1]. I decided to use the same SDK I already had for Eclipse, then:

- Started a new project
- Set minimum SDK 4.0 (API Level 14)
- Choose Blank Activity option
- Used Default names for Activity Name and Layout Name
- Hit Finish

After a few seconds Gradle finishes the build, and it throws me two errors with the following messages in file Teste4\app\build\intermediates/exploded-aar\com.android.support\appcompat-v7\23.0.0\res\values-v23\values-v23.xml:

&gt; Error:(2) Error retrieving parent for item: No resource found that matches the given name &#39;android:TextAppearance.Material.Widget.Button.Inverse&#39;. &lt;br/&gt;
&gt;   &lt;br/&gt;
&gt; Error:(2) Error retrieving parent for item: No resource found that matches the given name &#39;android:Widget.Material.Button.Colored&#39;. &lt;br/&gt;

Under _File -&gt; Project Structure -&gt; Modules: app (left column) -&gt; Properties tab_, I have the following versions set up:

- &quot;Compile Sdk Version&quot;: Android 5.1 (API Level 22)
- &quot;Build Tools Version&quot;: 23.0.2

What should I do in order to fix this?

I already tried what was suggested in Stack Overflow question *https://stackoverflow.com/questions/26431676*, but it didn&#39;t work.

  [1]: https://en.wikipedia.org/wiki/Android_Studio


Error retrieving parent for item: No resource found that matches the given name after upgrading to AppCompat v23

I started off with [this tutorial][1] for learning Kotlin in IntelliJ IDEA.  
When I tried running the following example,

    fun main(args: Array&lt;String&gt;) {
        println(&quot;lol&quot;)
    }
Build fails with the following error:  

    Error:(5, 5) Kotlin: Unresolved reference: println

This is the first time I am using IntelliJ. I have never worked on a Java project either. Am I missing something?

**Edit:** I have already seen [this other question][2], though it is not valid for my situation.


  [1]: http://kotlinlang.org/docs/tutorials/getting-started.html
  [2]: https://stackoverflow.com/questions/14410179/kotlin-command-line-compiler

Kotlin unresolved reference in IntelliJ

I have configured IntelliJ to paint the background of any line that has been executed at runtime to green when running in Coverage mode.

At times, I would like to just make all the files in the project revert back to their old and typical background colors, i.e, to remove all the coverage information. 

Is that possible? How?


Clear code coverage information in IntelliJ

When I open Intellij 14 , it starts the initial loading and then following is shown in the screen.After that it is vanished and program does not start.


[![enter image description here][1]][1]


But when I open the task manager it is shown in the Processes as per the below figure.

[![enter image description here][2]][2]


  [1]: http://i.stack.imgur.com/UnuyP.png
  [2]: http://i.stack.imgur.com/PUhfL.png

Sometimes the program starts after about 10 minutes .Sometimes it won&#39;t start at all.Can someone give me a solution on how to overcome this problem ?

Intellij IDEA won&#39;t start

I&#39;m using a dark theme in IntelliJ 14, the problem is that I have difficulties in distinguish the active tab, because its header&#39;s background is not different than the other tabs I have opened (or it is, but very little). I looked all over the place for a method to change the color of the active tab header&#39;s background, no luck so far.
Please help?

How to change the active tab header&#39;s color in IntelliJ 14.1.4?

I am having trouble finding the right-click context menu in Visual Studio 2015. I know that nothing is wrong with my project or the file I am working. I can find the right-click context refactor menu in Visual Studio 2013. However, in Visual Studio 2015 there isn&#39;t a refactor context menu in the right-click context menu.

Where did it go? How do I get it back?

Your suggestion cannot include menu *Edit* → *Refactor*.

I have tried to reset my Visual Studio settings back to default using menu *Tools* → *Import and Export Settings* and that didn&#39;t bring the menu back either.


Refactor menu missing from Visual Studio 2015

Jupyter (iPython) notebook is deservedly known as a good tool for prototyping the code and doing all kinds of machine learning stuff interactively. But when I use it, I inevitably run into the following:

 - the notebook quickly becomes too complex and messy to be maintained and improved further as notebook, and I have to make python scripts out of it;
 - when it comes to production code (e.g. one that needs to be re-run every day), the notebook again is not the best format.

Suppose I&#39;ve developed a whole machine learning pipeline in jupyter that includes fetching raw data from various sources, cleaning the data, feature engineering, and training models after all. Now what&#39;s the best logic to make scripts from it with efficient and readable code? I used to tackle it several ways so far:

 1. Simply convert .ipynb to .py and, with only slight changes, hard-code all the pipeline from the notebook into one python script.
    - &#39;+&#39;: quick
    - &#39;-&#39;: dirty, non-flexible, not convenient to maintain

 2.  Make a single script with many functions (approximately, 1 function for each one or two cell), trying to comprise the stages of the pipeline with separate functions, and name them accordingly. Then specify all parameters and global constants via `argparse`.
    - &#39;+&#39;: more flexible usage; more readable code (if you properly transformed the pipeline logic to functions)
    - &#39;-&#39;: oftentimes, the pipeline is NOT splittable into logically completed pieces that could become functions without any quirks in the code. All these functions are typically needed to be only called once in the script rather than to be called many times inside loops, maps etc. Furthermore, each function typically takes the output of all functions called before, so one has to pass many arguments to each function. 

 3.  The same thing as point (2), but now wrap all the functions inside the class. Now all the global constants, as well as outputs of each method can be stored as class attributes.
    - &#39;+&#39;: you needn&#39;t to pass many arguments to each method -- all the previous outputs already stored as attributes
    - &#39;-&#39;: the overall logic of a task is still not captured -- it is data and machine learning pipeline, not just class. The only goal for the class is to be created, call all the methods sequentially one-by-one and then be removed. On top of this, classes are quite long to implement.

 4.  Convert a notebook into python module with several scripts. I didn&#39;t try this out, but I suspect this is the longest way to deal with the problem.

I suppose, this overall setting is very common among data scientists, but surprisingly I cannot find any useful advice around.

Folks, please, share your ideas and experience. Have you ever encountered this issue? How have you tackled it?

Best practices for turning jupyter notebooks into python scripts

I&#39;m looking for a way to refactor part of my code to be shorter and simpler, but I don&#39;t know Mongoose very well and I&#39;m not sure how to proceed.

I am trying to check a collection for the existence of a document and, if it doesn&#39;t exist, create it. If it does exist, I need to update it. In either case I need to access the document&#39;s contents afterward.

What I&#39;ve managed to do so far is query the collection for a specific document and, if it&#39;s not found, create a new document. If it is found, I update it (currently using dates as dummy data for this). From there I can access either the found document from my initial `find` operation or the newly saved document and this works, but there must be a better way to accomplish what I&#39;m after.

Here&#39;s my working code, sans distracting extras.

    var query = Model.find({
        /* query */
    }).lean().limit(1);
    
    // Find the document
    query.exec(function(error, result) {
        if (error) { throw error; }
        // If the document doesn&#39;t exist
        if (!result.length) {
            // Create a new one
            var model = new Model(); //use the defaults in the schema
            model.save(function(error) {
                if (error) { throw error; }
                // do something with the document here
            });
        }
        // If the document does exist
        else {
            // Update it
            var query = { /* query */ },
                update = {},
                options = {};
    
            Model.update(query, update, options, function(error) {
                if (error) { throw error; }
                // do the same something with the document here
                // in this case, using result[0] from the topmost query
            });
        }
    });

I&#39;ve looked into `findOneAndUpdate` and other related methods but I&#39;m not sure if they fit my use case or if I understand how to use them correctly. Can anyone point me in the right direction?

(Probably) Related questions:

 - [How to check if that data already exist in the database during update (Mongoose And Express)][1]
 - [Mongoose.js: how to implement create or update?][2]
 - [NodeJS + Mongo: Insert if not exists, otherwise - update][3]
 - [Return updated collection with Mongoose][4]


----------

Edit
----

I didn&#39;t come across the question pointed out to me in my searching, but after reviewing the answers there I&#39;ve come up with this. It&#39;s certainly prettier, in my opinion, and it works, so unless I&#39;m doing something horribly wrong I think my question can probably be closed.

I would appreciate any additional input on my solution.

    // Setup stuff
    var query = { /* query */ },
        update = { expire: new Date() },
        options = { upsert: true };
    
    // Find the document
    Model.findOneAndUpdate(query, update, options, function(error, result) {
        if (!error) {
            // If the document doesn&#39;t exist
            if (!result) {
                // Create it
                result = new Model();
            }
            // Save the document
            result.save(function(error) {
                if (!error) {
                    // Do something with the document
                } else {
                    throw error;
                }
            });
        }
    });

  [1]: https://stackoverflow.com/q/16882938
  [2]: https://stackoverflow.com/q/13337685
  [3]: https://stackoverflow.com/q/13010290
  [4]: https://stackoverflow.com/q/20667739

Mongoose - Create document if not exists, otherwise, update- return document in either case

After much googling I&#39;ve found a lot about marking functions and their parameters as `const`, but no guide on marking variables as `const`.

Here&#39;s a really simple example:

    #include &lt;string&gt;
    #include &lt;iostream&gt;
    
    void example(const std::string&amp; x) {
      size_t length = x.length();
      for (size_t i = 0; i &lt; length; ++i) {
        std::cout &lt;&lt; x.at(i) &lt;&lt; std::endl;
      }
    }
    
    int main() {
      example(&quot;hello&quot;);
    }

Why not make 

    size_t length = x.length();

const like

    const size_t length = x.length();

by convention?

I know such a small, simple example really doesn&#39;t show any huge benefit to this, but it seems like it&#39;d be helpful in a larger codebase where you might accidentally mutate a variable you shouldn&#39;t have mutated.

Despite that benefit, I don&#39;t really see it used that much (in the C++ codebases I&#39;ve seen) or mentioned nearly as much as making functions and their parameters `const`.

Is there some downside to doing this other than having to type 5 extra characters? I haven&#39;t found much on the topic, and I don&#39;t want to shoot myself in the foot if it&#39;s a problem having so many consts.

Are there any downsides to marking all variables you don&#39;t modify const?

In order to refactor a client-side project, i&#39;m looking for a safe way to find (and delete) unused code. 

What tools do you use to find unused/dead code in large react projects? Our product has been in development for some years, and it is getting very hard to manually detect code that is no longer in use. We do however try to delete as much unused code as possible.

Suggestions for general strategies/techniques (other than specific tools) are also appreciated.

Thank you 



How to find dead code in a large react project?

Probably similar to the question, https://stackoverflow.com/questions/1801718/why-can-outer-java-classes-access-inner-class-private-members or https://stackoverflow.com/questions/31478718/access-to-superclass-private-fields-using-the-super-keyword-in-a-subclass .

But there are some differences: the children class can access the private members of their parent (and **only the nearest parent**) class.

Given the sample code below:
        
	public class T {

		private int t;

		class T1 {
			private int t1;

			public void test() {
				System.out.println(t);
			}
		}

		class T2 extends T1 {

			private int t2;

			public void test() {
				System.out.println(t);
				System.out.println(super.t1);
				System.out.println(this.t2);
			}
		}

		class T3 extends T2 {

			public void test() {
				System.out.println(t);
				System.out.println(super.t1); // NG: t1 Compile error! Why?
				System.out.println(super.t2); // OK: t2 OK
			}
		}
	}


Content Type	Original Author	Original Content on Stackoverflow
Question	helsont	View Question on Stackoverflow
Solution 1 - Android Studio	Carl Manaster	View Answer on Stackoverflow

Intellij Extract Inner Class

Android Studio Problem Overview

Android Studio Solutions

Solution 1 - Android Studio

VS2015 - The 'NuGetPackage' package did not load correctly

Xcode 7: ignore .xcscmblueprint in repository?

Attributions