&gt; ~1.2.3 := &gt;=1.2.3-0 &lt;1.3.0-0 &quot;Reasonably close to 1.2.3&quot;. When using
&gt; tilde operators, prerelease versions are supported as well, but a
&gt; prerelease of the next significant digit will NOT be satisfactory, so
&gt; 1.3.0-beta will not satisfy ~1.2.3.

From the documentation of the underlying [semver](https://github.com/isaacs/node-semver)

In RSpec, what&#39;s the difference between `it_behaves_like` and `include_examples`?

The [documentation](https://www.relishapp.com/rspec/rspec-core/v/2-14/docs/example-groups/shared-examples) says:

&gt; `include_examples` — include(s) the examples in the current context
&gt;
&gt; `it_behaves_like &quot;name&quot;` — include(s) the examples in a nested context

But what does this actually mean? Replacing one with the other doesn&#39;t seem to have an effect on whether my tests pass or fail. Is there a reason to prefer one over the other in some situations?

Also, are `it_should_behave_like` and `it_behaves_like` just synonyms?

What&#39;s the difference between &quot;include_examples&quot; and &quot;it_behaves_like&quot;?

Using [Json.Net][1], I have properties in my objects which need special care in order to serialize / deserialize them. Making a descendant of `JsonConverter`, I managed to accomplish this successfully. This is the common way of doing this:

    public class SomeConverter : JsonConverter
    {
        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            ...
        }
    
        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
        {
            ...
        }
    
        public override bool CanConvert(Type objectType)
        {
            ...
        }
    }
    
    class SomeClass
    {
        [JsonProperty, JsonConverter(typeof(SomeConverter))]
        public SomeType SomeProperty;
    }
    
    //Later on, in code somewhere
    SomeClass SomeObject = new SomeClass();
    string json = JsonConvert.SerializeObject(SomeObject, new SomeConverter());

My problem with this code is that I need to introduce my custom converter in every serialization / deserialization. In my project there are many cases that I cannot do that. For instance, I&#39;m using other external projects which make use of Json.Net as well and they will be working on my `SomeClass` instances.  But since I don&#39;t want to or can&#39;t make change in their code, I have no way to introduce my converter.

Is there any way I can register my converter, using some `static` member perhaps, in Json.Net so no matter where serialization / deserialization happens, my converter is always present?

  [1]: http://james.newtonking.com/json


Registering a custom JsonConverter globally in Json.Net

In bower (a node dependency package manager), on some dependencies the version is preceded by a tilde.  What does this mean?

    {
        &quot;name&quot;: &quot;mean&quot;,
        &quot;version&quot;: &quot;1.0.0&quot;,
        &quot;dependencies&quot;: {
            &quot;bootstrap&quot;: &quot;3.0.0&quot;,
            &quot;angular&quot;: &quot;~1.0.6&quot;
        }
    {

Bower dependency tilde in Node

In bower (a node dependency package manager), on some dependencies the version is preceded by a tilde. What does this mean?
<pre><code class="hljs language-json">{
 "name": "mean",
 "version": "1.0.0",
 "dependencies": {
 "bootstrap": "3.0.0",
 "angular": "~1.0.6"
 }
{
</code></pre>

I have the following array.

    var arr = [1,0,2];

I would like to remove the last element i.e. 2.

I used `arr.slice(-1);` but it doesn&#39;t remove the value.



Remove last item from array

I need to run two commands in series that need to read data from the same stream.
After piping a stream into another the buffer is emptied so i can&#39;t read data from that stream again so this doesn&#39;t work:


    var spawn = require(&#39;child_process&#39;).spawn;
    var fs = require(&#39;fs&#39;);
    var request = require(&#39;request&#39;);

    var inputStream = request(&#39;http://placehold.it/640x360&#39;);
    var identify = spawn(&#39;identify&#39;,[&#39;-&#39;]);

    inputStream.pipe(identify.stdin);

    var chunks = [];
    identify.stdout.on(&#39;data&#39;,function(chunk) {
      chunks.push(chunk);
    });

    identify.stdout.on(&#39;end&#39;,function() {
      var size = getSize(Buffer.concat(chunks)); //width
      var convert = spawn(&#39;convert&#39;,[&#39;-&#39;,&#39;-scale&#39;,size * 0.5,&#39;png:-&#39;]);
      inputStream.pipe(convert.stdin);
      convert.stdout.pipe(fs.createWriteStream(&#39;half.png&#39;));
    });

    function getSize(buffer){
      return parseInt(buffer.toString().split(&#39; &#39;)[2].split(&#39;x&#39;)[0]);
    }

**Request** complains about this

    Error: You cannot pipe after data has been emitted from the response.

and changing the **inputStream** to `fs.createWriteStream` yields the same issue of course.
I don&#39;t want to write into a file but _reuse_ in some way the stream that **request** produces (or any other for that matter).


Is there a way to reuse a readable stream once it finishes piping?
What would be the best way to accomplish something like the above example?




Node.js Piping the same readable stream into multiple (writable) targets

I&#39;m a node.js developer who creates web apps using express.js.
By now, my problem is:

Whenever I create an app on my computer, npm install its stuff and run it (with node app.js and nodemon) I get this message in the console:

    connect.multipart() will be removed in connect 3.0
    visit https://github.com/senchalabs/connect/wiki/Connect-3.0 for alternatives
    connect.limit() will be removed in connect 3.0
    Express server listening on port 3000

The app works, that&#39;s fine. But when I clone an app created in other computer I don&#39;t get that message, so I&#39;m supposing I have something outdated in my computer.

I went to the site mentioned in the message and confirmed my speculations. That is a deprecation warning. However, I&#39;ve updated node and npm and globally express but I still getting the note. 

My problem is, therefore: I don&#39;t know what do I need to update in order to get rid of the deprecation notes because they&#39;re freaking me out. 

I hope someone can help me. 
Thanks a lot. 

How to get rid of Connect 3.0 deprecation alert?

I have a slider class like this and I wan to change the style attribute **style=&quot;left: 336px&quot;**

    &lt;div id=&quot;range-cont&quot;&gt;
    &lt;div class=&quot;slider&quot;&gt;
    &lt;div class=&quot;progress&quot; style=&quot;width: 350px;&quot;&gt;&lt;/div&gt;
        &lt;a class=&quot;handle&quot; href=&quot;#&quot; **style=&quot;left: 336px;&quot;**&gt;&lt;/a&gt;
    &lt;/div&gt;
    &lt;input id=&quot;percentage&quot; class=&quot;range&quot; type=&quot;range&quot; value=&quot;14&quot; name=&quot;percentage&quot; min=&quot;0&quot; max=&quot;100&quot;&gt;
    &lt;p id=&quot;percent-label&quot;&gt;%&lt;/p&gt;
    &lt;/div&gt;
    &lt;/div&gt;

I tried 
`$(&#39;.handle&#39;).css({&#39;style&#39;:&#39;left: 300px&#39;})` but its not working. 
Not sure what I am doing wrong here

jquery to change style attribute of a div class

I&#39;m trying to add event listener to multiple objects using a for loop, but end up with all listeners targeting the same object --&gt; the last one.

If I add the listeners manually by defining boxa and boxb for every instance, it works. I guess it&#39;s the addEvent for-loop that&#39;s not working the way I hoped for. Maybe I use the wrong approach altogether.

Example using 4 of the class=&quot;container&quot;
Trigger on container 4 works the way it&#180;s supposed to.
Trigger on container 1,2,3 trigger event on container 4, but only if trigger has already been activated.

&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-js --&gt;

    // Function to run on click:
    function makeItHappen(elem, elem2) {
      var el = document.getElementById(elem);
      el.style.backgroundColor = &quot;red&quot;;
      var el2 = document.getElementById(elem2);
      el2.style.backgroundColor = &quot;blue&quot;;
    }

    // Autoloading function to add the listeners:
    var elem = document.getElementsByClassName(&quot;triggerClass&quot;);

    for (var i = 0; i &lt; elem.length; i += 2) {
      var k = i + 1;
      var boxa = elem[i].parentNode.id;
      var boxb = elem[k].parentNode.id;

      elem[i].addEventListener(&quot;click&quot;, function() {
        makeItHappen(boxa, boxb);
      }, false);
      elem[k].addEventListener(&quot;click&quot;, function() {
        makeItHappen(boxb, boxa);
      }, false);
    }

&lt;!-- language: lang-html --&gt;

    &lt;div class=&quot;container&quot;&gt;
      &lt;div class=&quot;one&quot; id=&quot;box1&quot;&gt;
        &lt;p class=&quot;triggerClass&quot;&gt;some text&lt;/p&gt;
      &lt;/div&gt;
      &lt;div class=&quot;two&quot; id=&quot;box2&quot;&gt;
        &lt;p class=&quot;triggerClass&quot;&gt;some text&lt;/p&gt;
      &lt;/div&gt;
    &lt;/div&gt;

    &lt;div class=&quot;container&quot;&gt;
      &lt;div class=&quot;one&quot; id=&quot;box3&quot;&gt;
        &lt;p class=&quot;triggerClass&quot;&gt;some text&lt;/p&gt;
      &lt;/div&gt;
      &lt;div class=&quot;two&quot; id=&quot;box4&quot;&gt;
        &lt;p class=&quot;triggerClass&quot;&gt;some text&lt;/p&gt;
      &lt;/div&gt;
    &lt;/div&gt;

&lt;!-- end snippet --&gt;

addEventListener using for loop and passing values

I am trying to use bower to pull down a git repository when I run a `bower install`.  Is there any way of listing a git repository as a dependency?  I can&#39;t find any info in the documentation, but maybe I am looking in the wrong place.

Can I add a git repository to my bower.json?

In my project I&#39;ve installed `bower` components without **save** option. Now, I would like update to `bower.json`?

How can I update bower.json with installed packages?

How to update bower.json with installed packages?

What is the use of property **main file** when you run bower init? I have been looking and many people says that it currently has no purpose.

Is that true? Bower&#39;s documentation doesn&#39;t explain it either.

What is the &quot;main file&quot; property when doing bower init?

Git is installed and is in the path.

Platform: [Red Hat Enterprise Linux][1] 5.8.

    &gt;which git
    /usr/local/bin/git

Yet bower can&#39;t find it:

    bower angular#1.0.6  ENOGIT git is not installed or not in the PATH

What is the recommended work-around?

  [1]: https://en.m.wikipedia.org/wiki/Red_Hat_Enterprise_Linux


Bower: ENOGIT Git is not installed or not in the PATH

I&#39;m new to using npm and bower, building my first app in emberjs :).  
I do have a bit of experience with rails, so I&#39;m familiar with the idea of files for listing dependencies (such as bundler Gemfile)

Question: when I want to add a package (and check in the dependency into git), where does it belong - into `package.json` or into `bower.json`?

From what I gather,  
running `bower install` will fetch the package and put it in `/vendor` directory,  
running `npm install` it will fetch it and put it into `/node_modules` directory. 

[This SO answer](https://stackoverflow.com/a/16493586/1592915) says bower is for front-end and npm is for backend stuff.  
[Ember-app-kit](https://github.com/stefanpenner/ember-app-kit) seems to adhere to this distinction from the first glance... But instructions in gruntfile for [enabling some functionality](https://github.com/stefanpenner/ember-app-kit/blob/master/Gruntfile.js#L40-L42) give two explicit commands, so I&#39;m totally confused here.

Intuitively I would guess that  

1. **npm install --save-dev package-name** would be equivalent to adding the package-name to my package.json 

2. **bower install --save package-name** might be the same as adding the package to my *bower.json* and running **bower install**?  


If that is the case, when should I ever install packages explicitly like that without adding them to the file that manages dependencies (apart from installing command line tools globally)?

Content Type	Original Author	Original Content on Stackoverflow
Question	andygoestohollywood	View Question on Stackoverflow
Solution 1 - Javascript	Maxim Krizhanovsky	View Answer on Stackoverflow

Bower dependency tilde in Node

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Registering a custom JsonConverter globally in Json.Net

What's the difference between "include_examples" and "it_behaves_like"?

Attributions