This glob includes all `*.js` but not `*.spec.js`:

    components/**/!(*.spec).js

How can I register/add a custom shutdown routine that shall fire when my Spring Boot application shuts down?

Scenario: I deploy my Spring Boot application to a Jetty servlet container (i.e., no embedded Jetty). My application uses Logback for logging, and I want to change logging levels during runtime using Logback&#39;s MBean JMX configurator. [Its documentation states that to avoid memory leaks, on shutdown a specific LoggerContext shutdown method has to be called](http://logback.qos.ch/manual/jmxConfig.html#leak).

What are good ways to listen on Spring Boot shutdown events?

I have tried: 

    public static void main(String[] args) throws Exception {
        ConfigurableApplicationContext cac = SpringApplication.run(Example.class, args);

        cac.addApplicationListener(new ApplicationListener&lt;ContextClosedEvent&gt;() {

            @Override
            public void onApplicationEvent(ContextClosedEvent event) {
                logger.info(&quot;Do something&quot;);
            }
        });
    }

but this registered listener does not get called when the application shuts down.

Spring Boot shutdown hook

The [clang-format sytle options documentation][1] includes a number of options called PenaltyXXX. The documentation doesn&#39;t explain how these penalties should be used. Can you describe how to use these penalty values and what effect they achieve (perhaps with an example)?


  [1]: http://clang.llvm.org/docs/ClangFormatStyleOptions.html

In clang-format, what do the penalties do?

I am looking for a better glob pattern for usemin, i want to to find all `.js` files but exclude the `.spec.js` files. I have the following solution so far.

```&lt;script src=&quot;components/**/*(.js|!(*.spec.js|*.scss))&quot;&gt;&lt;/script&gt;
```

The solution i have at the moment requires me to keep adding file extensions to exclude them, else they get picked up, for example `.html` files.

I tried to make it only look for `.js` files and exclude the `.spec.js` from them but it does not seem to work.

Also adding a `!components/**/*.spec.js` as another script below does not seem to work.

Node glob pattern for every .js file except .spec.js

I am looking for a better glob pattern for usemin, i want to to find all <code>.js</code> files but exclude the <code>.spec.js</code> files. I have the following solution so far.
<pre><code class="hljs"></code></pre>
The solution i have at the moment requires me to keep adding file extensions to exclude them, else they get picked up, for example <code>.html</code> files.
I tried to make it only look for <code>.js</code> files and exclude the <code>.spec.js</code> from them but it does not seem to work.
Also adding a <code>!components/**/*.spec.js</code> as another script below does not seem to work.

I&#39;m getting returned a JSON value from MongoDB after I run my query. The problem is I do not want to return all the JSON associated with my return, I tried searching the docs and didn&#39;t find a proper way to do this.  I was wondering what if it is at possible, and if so what is the proper way of doing such. Example:
In the DB 

    {
        user: &quot;RMS&quot;,
        OS: &quot;GNU/HURD&quot;,
        bearded: &quot;yes&quot;,
        philosophy: {
            software: &quot;FOSS&quot;,
            cryptology: &quot;Necessary&quot;
        },
        email: {
            responds: &quot;Yes&quot;,
            address: &quot;rms@gnu.org&quot;
        },
        facebook: {}
    }

    {
        user: &quot;zuckerburg&quot;,
        os: &quot;OSX&quot;,
        bearded: &quot;no&quot;,
        philosophy: {
            software: &quot;OSS&quot;,
            cryptology: &quot;Optional&quot;
        },
        email: {},
        facebook: {
            responds: &quot;Sometimes&quot;,
            address: &quot;https://www.facebook.com/zuck?fref=ts&quot;
        }
    } 


What would be the proper way of returning a field if it exists for a user, but if it doesn&#39;t return another field.  For the example above I would want to return the `[email][address]` field for RMS and the `[facebook][address]` field for Zuckerburg.  This is what I have tried to find if a field is null, but it doesn&#39;t appear to be working.
  
     .populate(&#39;user&#39; , `email.address`)
      .exec(function (err, subscription){ 
        var key;
        var f;
        for(key in subscription){
          if(subscription[key].facebook != null  ){
              console.log(&quot;user has fb&quot;);
          }
        }
      }

Return certain fields with .populate() from Mongoose

I tried running `webpack --watch` and after editing my JS files, it doesn&#39;t trigger an auto-recompilation. 

I&#39;ve tried reinstalling `webpack` using `npm uninstall` but it&#39;s still not working.

Any ideas?

webpack --watch isn&#39;t compiling changed files

I&#39;m using bluebird and I see two ways to resolve synchronous functions into a Promise, but I don&#39;t get the differences between both ways. It looks like the stacktrace is a little bit different, so they aren&#39;t just an `alias`, right?

So what is the preferred way?

**Way A**

    function someFunction(someObject) {
      return new Promise(function(resolve) {
        someObject.resolved = true;
        resolve(someObject);
      });
    }

**Way B**

    function someFunction(someObject) {
      someObject.resolved = true;
      return Promise.resolve(someObject);
    }

Promise.resolve vs new Promise(resolve)

I am trying to use an array map to filter a object a bit further to prepare it to send to the server to for saving. I can filter to 1 key value, which is great, but I want to take it 1 step further and check them against a boolean inside.

So, right now this is what I have - 

	$scope.appIds = $scope.applicationsHere.map( function(obj){
			if(obj.selected == true){
				return obj.id;
			}
		});

This works great for pulling out the id&#39;s, however I don&#39;t want to push them in this new array if they their selected value == false, so I put a conditional to filter further. This somewhat works, I get an array of id&#39;s, but the id&#39;s that have .selected == false are still in the array, just with the value of null. So If  I have 4 items in the object and 2 of them are false it looks like this  - 

     appIds = {id1, id2, null, null};

My question is - is there a way to do this without the nulls being put in there. Thanks for reading!

Using array map to filter results with if conditional

I am new to Gulp and wondering how can I minify (concatinate) my collection to single file instead of every file separately.

### Example

    var gulp = require(&#39;gulp&#39;);
    var uglify = require(&#39;gulp-uglify&#39;);
    
    gulp.task(&#39;minify&#39;, function () {
       gulp.src([
    		&#39;content/plugins/jquery/jquery-2.1.1.js&#39;,
    		&#39;content/plugins/jquery/jquery-ui.js&#39;,
    		&#39;content/js/client.js&#39;])
          .pipe(uglify())
          .pipe(gulp.dest(&#39;content/js/client.min.js&#39;)) // It will create folder client.min.js
    });
    
    gulp.task(&#39;default&#39;, [&#39;minify&#39;]);

As you can see I&#39;m trying to minify 3 javascript files and then output them into one `client.min.js`. Is it possible?

Gulp minify multiple js files to one

I need to check if a file exists using AWS SDK. Here is what I&#39;m doing:

	var params = {
		Bucket: config.get(&#39;s3bucket&#39;),
		Key: path
	};

	s3.getSignedUrl(&#39;getObject&#39;, params, callback);

It works but the problem is that when the object doesn&#39;t exists, the callback (with arguments err and url) returns no error, and when I try to access the URL, it says &quot;NoSuchObject&quot;.

Shouldn&#39;t this `getSignedUrl` method return an error object when the object doesn&#39;t exists? How do I determine if the object exists? Do I really need to make a call on the returned URL?


How to determine if object exists AWS S3 Node.JS sdk

Why does, for example, a Grunt plugin define its dependency on grunt as &quot;**peer dependencies**&quot;?

Why can&#39;t the plugin just have Grunt as its own dependency in **grunt-plug/node_modules**?

Peer dependencies are described here: https://nodejs.org/en/blog/npm/peer-dependencies/

But I don&#39;t really get it.

***Example***

I&#39;m working with AppGyver Steroids at the moment which uses Grunt tasks to build my source files into a /dist/ folder to be served on a local device. I&#39;m quite new at npm and grunt so I want to fully comprehend what is going on.

So far I get this:

**[rootfolder]/package.json** tells npm it depends on the `grunt-steroids` npm package for development:

      &quot;devDependencies&quot;: {
        &quot;grunt-steroids&quot;: &quot;0.x&quot;
      },

Okay. Running npm install in **[rootfolder]** detects the dependency and installs grunt-steroids in **[rootfolder]/node_modules/grunt-steroids**.

Npm then reads **[rootfolder]/node_modules/grunt-steroids/package.json** so it can install `grunt-steroids` own dependencies.:

 

    &quot;devDependencies&quot;: {
        &quot;grunt-contrib-nodeunit&quot;: &quot;0.3.0&quot;,
        &quot;grunt&quot;: &quot;0.4.4&quot;
      },
    &quot;dependencies&quot;: {
        &quot;wrench&quot;: &quot;1.5.4&quot;,
        &quot;chalk&quot;: &quot;0.3.0&quot;,
        &quot;xml2js&quot;: &quot;0.4.1&quot;,
        &quot;lodash&quot;: &quot;2.4.1&quot;
      },
    &quot;peerDependencies&quot;: {
        &quot;grunt&quot;: &quot;0.4.4&quot;,
        &quot;grunt-contrib-copy&quot;: &quot;0.5.0&quot;,
        &quot;grunt-contrib-clean&quot;: &quot;0.5.0&quot;,
        &quot;grunt-contrib-concat&quot;: &quot;0.4.0&quot;,
        &quot;grunt-contrib-coffee&quot;: &quot;0.10.1&quot;,
        &quot;grunt-contrib-sass&quot;: &quot;0.7.3&quot;,
        &quot;grunt-extend-config&quot;: &quot;0.9.2&quot;
      },

The &quot;**dependencies**&quot; packages are installed into **[rootfolder]/node_modules/grunt-steroids/node_modules** which is logical for me. 

The &quot;**devDependencies**&quot; aren&#39;t installed, which I&#39;m sure is controlled by npm detecting I&#39;m just trying to use `grunt-steroids`, and not develop on it.

But then we have the &quot;**peerDependencies**&quot;.

These are installed in **[rootfolder]/node_modules**, and I don&#39;t understand why there and not in **[rootfolder]/node_modules/grunt-steroids/node_modules** so that conflicts with other grunt plugins (or whatever) are avoided?

Why use peer dependencies in npm for plugins?

Question 1:

What exactly is the purpose of installing Twitter Bootstrap through npm? I thought npm was meant for server side modules. Is it faster to serve the bootstrap files yourself than using a CDN? 

Question 2:

If I were to npm install Bootstrap, how would I point to the bootstrap.js and bootstrap.css files?



Purpose of installing Twitter Bootstrap through npm?

I have the following problem retrieving data from MongoDB using mongoose.

Here is my Schema:


    const BookSchema = new Schema(
    	{
    		_id:Number,
    		title:String,
    		authors:[String],
    		subjects:[String]	
    	}
    );


as you can see i have 2 arrays embedded in the object, let&#39;s say the content of the authors can be something like this: authors:[&quot;Alex Ferguson&quot;, &quot;Didier Drogba&quot;, &quot;Cristiano Ronaldo&quot;, &quot;Alex&quot;]  
what I&#39;m trying to achieve is get all the Alex in the array.

So far, I&#39;ve been able to get the values if they match the value completely. However if I try to get the ones containing Alex the answer is always [].

What I want to know is how I can do this using find() without performing a map-reduce to create a view or a collection and then applying find() over that.

The code here works for exact matches


    Book.find( {authors:req.query.q} , function(errs, books){
    			if(errs){
    				res.send(errs);	
    			}
    			
    			res.json(books);
    		});

	

I tried some things but no luck 
{authors:{$elemMatch:req.query.q}}
{authors:{$in:[req.query.q]}}

This one gives me an error and on top of that says is very inefficient in another post I found here.
{$where:this.authors.indexOf(req.query.q) != -1}

and I also tried {authors:{$regex:&quot;./*value*/i&quot;}}

The map-reduce works fine, I need to make it work using the other approach to see which one is better?  

Any help is greatly appreciated. I&#39;m sure this is easy, but I&#39;m new with NodeJS and Mongo and I haven&#39;t been able to figure it out on my own.

How to get all the values that contains part of a string using mongoose find?

So, I&#39;ve been looking all over for this, found &quot;similar&quot; answers here, but not exactly what I want.

Right now if I want to test a single file with karma, I need to do `fit()`, `fdescribe()` on the file in question...

However, what I do want is to be able to just call karma, with the config file, and direct it to a specific file, so I don&#39;t need to modify the file at all, ie:

`karma run --conf karma.conf.js --file /path/to/specific/test_file.js`

is it possible to do this? Or with any helper? (using grunt or gulp?)

Karma: Running a single test file from command line

I&#39;m trying to get into Grunt, which I am new to, but I do not understand its utility.

I understand that it is a taskrunner. I understand that it can be used to do things like bundle, uglify, jshint, minify, etc etc etc, anything that can be turned into a scripted task.

But I don&#39;t see what advantage this gives. Nearly all of these can be run from the command line anyway, which is to say you could just combine them using a simple shell script. It seems to me that setting up grunt + gruntfiles and writing tasks is *more* work than writing a shell script, rather than less.

What am I missing about this?

What is Grunt for?

How can one get a full sass (i.e. scss) precompiler environment up and running in Visual Studio 2015? This is a sibling question to [this one concerning less][1]. 


  [1]: https://stackoverflow.com/questions/27735934/how-to-compile-less-files-on-save-in-visual-studio-2015-preview

How to compile .sass files on save in Visual Studio 2015

I am a bit new to the task runner and bundler world and while going through things like 

&gt; Grunt, Gulp, Webpack, Browserify

, I did not feel that there is much difference between them. In other words, I feel Webpack can do everything that a task runner does. But still I got a huge examples where gulp and webpack are used together. I couldn&#39;t figure out the reason why.

Being new to this, I might be taking things in the wrong direction. It will be great if you could point out what I am missing. Any useful links are welcome.

Thanks in advance.

Task Runners (Gulp, Grunt, etc) and Bundlers (Webpack, Browserify). Why use together?

I am using Grunt as my Build Tool and ESLint as my linting tool for an app I am working on. I am also using the Underscore Node package, and have made use of it in my app. Unfortunately, when I run ESLint on my code, it thinks that _ is an undefined variable in the following line:

```return _.pluck(objects, nameColumn);```

This is the error it is giving me:

```  78:21  error  &quot;_&quot; is not defined  no-undef ```

I would prefer not to disable the no-undef rule for ESLint, and I have tried installing the Underscore plugin, but I am still receiving this error. If anyone else has any ideas for what to try with this, I would be very appreciative!

If there is any further information I can give that would help anyone with helping me get this figured out, just let me know!

ESLint&#39;s &quot;no-undef&quot; rule is calling my use of Underscore an undefined variable

I want to be able to match a pattern in [`glob`](https://docs.python.org/2/library/glob.html) format to a list of strings, rather than to actual files in the filesystem. Is there any way to do this, or convert a `glob` pattern easily to a regex?



Python glob but against a list of strings rather than the filesystem

I&#39;ve tried the following command but I am having trouble interpreting the results:

```bash
ls **
```

I&#39;m not sure exactly what it is outputting and why.

What do double-asterisk (**) wildcards mean?

I have this path in my react gulpfile:

&lt;!-- language: lang-javascript --&gt;

    var path = {
      HTML: &#39;src/index.html&#39;,
      ALL: [&#39;src/js/*.js&#39;, &#39;src/js/**/*.js&#39;, &#39;src/index.html&#39;],
      JS: [&#39;src/js/*.js&#39;, &#39;src/js/**/*.js&#39;],
      MINIFIED_OUT: &#39;build.min.js&#39;,
      DEST_SRC: &#39;dist/src&#39;,
      DEST_BUILD: &#39;dist/build&#39;,
      DEST: &#39;dist&#39;
    };

What is the double glob character?

I know what the single glob is... but what is the double?
[single glob](https://en.wikipedia.org/wiki/Glob_(programming))

Content Type	Original Author	Original Content on Stackoverflow
Question	roughcoder	View Question on Stackoverflow
Solution 1 - Javascript	Heikki	View Answer on Stackoverflow

Node glob pattern for every .js file except .spec.js

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

In clang-format, what do the penalties do?

Spring Boot shutdown hook

Attributions