`::1` is the loopback address in IPv6.  Think of it as the IPv6 version of `127.0.0.1`.

See http://en.wikipedia.org/wiki/Localhost

Just to add little more info to it, in IPv6 loopback address is represented as 127 zeroes followed by a 1 i.e (0000... 127 times..1). 
It&#39;s representation should have been like this -&gt; **0000:0000:0000:0000:0000:0000:0000:0001** but we have some short form representation for this. If there are all zeroes in a single block you can replace it by single 0. So it becomes -&gt; **0:0:0:0:0:0:0:0001**.
Again we can see that we have runs of zeroes, they can be eliminated and we get 
-&gt; **::0001** -&gt; **::1** .

The simple answer is that:
`::1` is the compressed format of IPV6 loopback address `0:0:0:0:0:0:0:1`. It is the equivalent of the IPV4 address `127.0. 0.1`

I&#39;m using MVC 3 in my project, and I&#39;m seeing a very strange behavior.

I&#39;m trying to create a hidden field for a particular value on my Model, the problem is that for some reason the value set on the field does not correspond to the value in the Model.

e.g.

I have this code, just as a test:

    &lt;%:Html.Hidden(&quot;Step2&quot;, Model.Step) %&gt;
    &lt;%:Html.HiddenFor(m =&gt; m.Step) %&gt;

I would think that both hidden fields would have the same value.
What I do is, set the value to 1 the first time I display the View, and then after the submission I increase the value of the Model field by 1.

So, the first time I render the page both controls have the value 1, but the second time the values rendered are these:

    &lt;input id=&quot;Step2&quot; name=&quot;Step2&quot; type=&quot;hidden&quot; value=&quot;2&quot; /&gt;
    &lt;input id=&quot;Step&quot; name=&quot;Step&quot; type=&quot;hidden&quot; value=&quot;1&quot; /&gt;

As you can see, the first value is correct, but the second value seems to be the same as the first time I display the View.

What am I missing? Are the *For Html helpers caching the values in some way? If so, how can I disable this caching?.

Thanks for your help.

ASP.Net MVC Html.HiddenFor with wrong value

At least once per day i have the following situation:

    A: This line should also replace line X
    ...
    X: This is line should be replaced

I believe that I don&#39;t perform that task efficiently.

What I do:

- Go to line A: **AG**
- Yank line A: **yy**
- Go to line X: **XG**
- Paste line A: **P**
- Move to old line: **j**
- Delete old line: **dd**

This has the additional disadvantage that line X is now in the default register, which is annoying if I find another line that should be replaced with A. Yanking to and pasting from an additional register (**&quot;ayy**, **&quot;aP**) makes this simple task even less efficient.

*My Questions:*

- Did I miss a built-in Vim command to replace a line yanked before?
- If not, how can I bind my own command that leaves (or restores) the yanked line in the default register?

Vim: Replacing a line with another one yanked before

I was playing with sockets on local machine with no network connection. See below:

    IPAddress address = IPAddress.Any; // doesn&#39;t work
    IPAddress address = IPAddress.Parse(&quot;::1&quot;); // works

So what is exactly `::1` IP address ? Is it the default available IP address or it&#39;s the loopback address ? what happens to above code (working line) on a machine with dedicated IP address and network connection ?

EDIT:

exact code is used to bind a specific IP address to socket. Here it is:

    ServicePoint sp = ServicePointManager.FindServicePoint(uri);
    sp.BindIPEndPointDelegate = new BindIPEndPoint(Bind);
    // here&#39;s the bind delegate:
    private IPEndPoint Bind(ServicePoint sp, IPEndPoint ep, int retryCount)
    {
       return new IPEndPoint(IPAddress.Parse(&quot;::1&quot;), 0);
    }

What is IP address &#39;::1&#39;?

I was playing with sockets on local machine with no network connection. See below:
<pre><code class="hljs language-arduino">IPAddress address = IPAddress.Any; // doesn't work
IPAddress address = IPAddress.Parse("::1"); // works
</code></pre>
So what is exactly <code>::1</code> IP address ? Is it the default available IP address or it's the loopback address ? what happens to above code (working line) on a machine with dedicated IP address and network connection ?
EDIT:
exact code is used to bind a specific IP address to socket. Here it is:
<pre><code class="hljs language-arduino">ServicePoint sp = ServicePointManager.FindServicePoint(uri);
sp.BindIPEndPointDelegate = new BindIPEndPoint(Bind);
// here's the bind delegate:
private IPEndPoint Bind(ServicePoint sp, IPEndPoint ep, int retryCount)
{
 return new IPEndPoint(IPAddress.Parse("::1"), 0);
}
</code></pre>

I recently upgraded to IE9-beta. Now, In my .Net (3.5) WinForm application I want to use `WebBrowser` control. 

So my question is, whether the `WebBrowser` control will exhibit all properties and functions of IE9? 

My concern is, I want to render some SVG graphics on it.

Will the IE9 WebBrowser Control Support all of IE9&#39;s features, including SVG?

In a lot of C# files I see regions tags(?) that are named CTOR or ctor. What&#39;s the meaning of ctor? Why is such a region called ctor?

What is the meaning of CTOR?

I&#39;m using `C# 3.5` and am currently using `Linq` to get all users from a user table and put them in a list.

Now I would like to return a random user from that list. What&#39;s the best way to go about doing that?

Edit: Found it here: 
http://stackoverflow.com/questions/3173718/linq-how-to-get-a-random-object-using-linq

Random element of List&lt;T&gt; from LINQ SQL

I have this Repository method

        public IList&lt;Message&gt; ListMessagesBy(string text, IList&lt;Tag&gt; tags, int pageIndex, out int count, out int pageSize)
        {
            pageSize = 10;
            var likeString = string.Format(&quot;%{0}%&quot;, text);
            var query = session.QueryOver&lt;Message&gt;()
                .Where(Restrictions.On&lt;Message&gt;(m =&gt; m.Text).IsLike(likeString) || 
                Restrictions.On&lt;Message&gt;(m =&gt; m.Fullname).IsLike(likeString));

            if (tags.Count &gt; 0)
            {
                var tagIds = tags.Select(t =&gt; t.Id).ToList();
                query
                    .JoinQueryOver&lt;Tag&gt;(m =&gt; m.Tags)
                    .WhereRestrictionOn(t =&gt; t.Id).IsInG(tagIds);
            }            

            count = 0;
            if(pageIndex &lt; 0)
            {
                count = query.ToRowCountQuery().FutureValue&lt;int&gt;().Value;
                pageIndex = 0;
            }
            return query.OrderBy(m =&gt; m.Created).Desc.Skip(pageIndex * pageSize).Take(pageSize).List();
        }

You supply a free text search string and a list of Tags.
The problem is that if a message has more then one tag it is listed duplicated times. 
I want a distinct result based on the Message entity. I&#39;ve looked at

    Projections.Distinct
But it requires a list of Properties to to the distinct question on. This Message is my entity root there most be a way of getting this behaviour without supplying all of the entity properties?

Thanks in advance, Anders

How to get a distinct result with nHibernate and QueryOver API?

I was looking through some C# code for extending language support in VS2010 (Ook example). I saw some classes called `internal sealed class`

What do these do? Would one use them?

What is an internal sealed class in C#?

&gt; **Possible Duplicate:**  
&gt; [Is there an easy way to convert String to Inetaddress in Java?](https://stackoverflow.com/questions/2309049/is-there-an-easy-way-to-convert-string-to-inetaddress-in-java)  

&lt;!-- End of automatically inserted text --&gt;

I&#39;m  trying to convert a string(representing an IP address, e.g. `10.0.2.50`) into an `InetAddress` obj. 

According to the API it is possible to create an Object providing a String representing a hostname (e.g. `www.google.ch`). This is not an option for me since I do not have the hostname for each InetAddress object I want to create(besides that it takes too long).

Is it possible to convert a String (e.g. `10.0.2.50`) into an `InetAddress` obj.? (according to the api it is possible to do so if you have the IP as `byte[]`, but how do I convert a `String` containing an IP into `byte[]`?)

Java: Convert a String (representing an IP) to InetAddress

I am trying to convert an address specified by an IP number or a name, both in String (i.e. `localhost` or `127.0.0.1`), into an *InetAdress* object. There&#39;s no constructor but rather static methods that return an *InetAddress*. So if I get a host name it&#39;s not a problem, but what if I get the IP number? There&#39;s one method that gets *byte[]* but I&#39;m not sure how that can help me. All other methods gets the host name.

[InetAddress API documentation][1]


  [1]: http://download.oracle.com/javase/1.4.2/docs/api/java/net/InetAddress.html

Creating InetAddress object in Java

How can I identify the server IP address in PHP?

How to identify server IP address in PHP

I have an odd question, not sure if its possible.

I&#39;d like to write a script, and for example I&#39;m going to use ipconfig as my command.

Now when you normally run this command theres a ton of output.

What I&#39;d like to have is a script that would show only the IP address, for example.

    echo Network Connection Test
    ipconfig &lt;---This would run in the background
    echo Your IP Address is: (INSERT IP ADDRESS HERE)
The output would be

    Network Connection Test
    
    Your IP Address is: 192.168.1.1

Is this even possible?

How do I get the IP address into a batch-file variable?

I am trying to get client ip address using 

        HttpContext.Request.UserHostAddress;


but it returns `::1`.

How to solve this?

Request.UserHostAddress issue with return result &quot;::1&quot;

In my Visual Studio 2013 RC project, I&#39;m getting this err msg:

&gt; &quot;*The type &#39;System.Net.Http.Formatting.MediaTypeFormatter&#39; is defined
&gt; in an assembly that is not referenced. You must add a reference to
&gt; assembly &#39;System.Net.Http.Formatting, Version=4.0.0.0,
&gt; Culture=neutral, PublicKeyToken=31bf3856ad364e35&#39;*&quot;

...on the `&quot;var response = &quot;` line of code in a Controller:

    public HttpResponseMessage PostDelivery(Delivery delivery)
    {
        delivery = repository.Add(delivery);
        var response = Request.CreateResponse&lt;Delivery&gt;(HttpStatusCode.Created, delivery);

        string uri = Url.Link(&quot;DefaultApi&quot;, new { id = delivery.Id });
        response.Headers.Location = new Uri(uri);
        return response;
    }

Searching my hard drive for the required assembly (&quot;System.Net.Http.Formatting&quot;), it shows me several locations where it exists, but they are all within existing projects, as is seen here:

![enter image description here][1]

Surely there is another location from which System.Net.Http.Formatting.dll can be referenced! But where?

UPDATE
------

Trying to follow the clue here: http://www.nuget.org/packages/System.Net.Http.Formatting

IOW, by selecting Tools &gt; Library Package Manager &gt; Package Manager Console, and entering: 

    Install-Package System.Net.Http.Formatting -Version 4.0.20710

...I see the red bulls of Pamplona (not the beverage) descending wild-eyed upon me:

![enter image description here][2]

UPDATE 2
--------

I added the System.Net.Http.Formatting.dll from here:

    C:\Users\clay\My Documents\Visual Studio 2013\Projects\MvcApplication1\MvcApplication1\bin

...and it now compiles and runs and works as expected, but that is obviously &quot;not the preferred method&quot;

  [1]: http://i.stack.imgur.com/UJlOi.png
  [2]: http://i.stack.imgur.com/P45oN.png


From where do I reference a missing assembly (System.Net.Http.Formatting)?

What&#39;s the usage pattern of `HttpResponseMessage.EnsureSuccessStatusCode()`? It disposes of the Content of the message and throws `HttpRequestException`, but I fail to see how to programmatically handle it any differently than a generic `Exception`. For example, it doesn&#39;t include the `HttpStatusCode`, which would have been handy. 

Is there any way of getting more info out of it? Could anyone show relevant usage pattern of both `EnsureSuccessStatusCode()` and HttpRequestException?



Usage of EnsureSuccessStatusCode and handling of HttpRequestException it throws

Let&#39;s suppose I have the following variable:

    System.Net.HttpStatusCode status = System.Net.HttpStatusCode.OK;

How can I check if this is a success status code or a failure one?

For instance, I can do the following:

    int code = (int)status;
    if(code &gt;= 200 &amp;&amp; code &lt; 300) {
        //Success
    }

I can also have some kind of white list:

    HttpStatusCode[] successStatus = new HttpStatusCode[] {
         HttpStatusCode.OK,
         HttpStatusCode.Created,
         HttpStatusCode.Accepted,
         HttpStatusCode.NonAuthoritativeInformation,
         HttpStatusCode.NoContent,
         HttpStatusCode.ResetContent,
         HttpStatusCode.PartialContent
    };
    if(successStatus.Contains(status)) //LINQ
    {
        //Success
    }

None of these alternatives convinces me, and I was hoping for a .NET class or method that can do this work for me, such as:

    bool isSuccess = HttpUtilities.IsSuccess(status);

Content Type	Original Author	Original Content on Stackoverflow
Question	Xaqron	View Question on Stackoverflow
Solution 1 - C#	Brad	View Answer on Stackoverflow
Solution 2 - C#	Coding bat	View Answer on Stackoverflow
Solution 3 - C#	Ali Mumtaz	View Answer on Stackoverflow

What is IP address '::1'?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Vim: Replacing a line with another one yanked before

ASP.Net MVC Html.HiddenFor with wrong value

Attributions