- `&amp;nbsp;` is the character entity reference (meant to be easily parseable by humans).
- `&amp;#160;` is the numeric entity reference (meant to be easily parseable by machines).

They are the same except for the fact that the latter does not need another lookup table to find its actual value. The lookup table is called a [DTD](https://en.wikipedia.org/wiki/Document_type_definition), by the way.

You can read more about character entity references in the [offical W3C documents](https://www.w3.org/TR/html4/charset.html#h-5.3).

Those do both mean non-breaking space, yes. `&amp;#xA0;` is another synonym, in hex.

`&amp;#160;` is the numeric reference for the entity reference `&amp;nbsp;` &amp;mdash; they are the exact same thing.  It&#39;s likely your editor is simply inserting the numberic reference instead of the named one.

See the Wikipedia page for &lt;a href=&quot;http://en.wikipedia.org/wiki/Non-breaking_space&quot;&gt;the non-breaking space&lt;/a&gt;.

I&#39;m working on a script that generate some Excel documents and I need to convert a number into its column name equivalent. For example:

    1 =&gt; A
    2 =&gt; B
    27 =&gt; AA
    28 =&gt; AB
    14558 =&gt; UMX

I have already written an algorithm to do so, but I&#39;d like to know whether are simpler or faster ways to do it:

    function numberToColumnName($number){
        $abc = &quot;ABCDEFGHIJKLMNOPQRSTUVWXYZ&quot;;
        $abc_len = strlen($abc);
    
        $result_len = 1; // how much characters the column&#39;s name will have
        $pow = 0;
        while( ( $pow += pow($abc_len, $result_len) ) &lt; $number ){
            $result_len++;
        }
    
        $result = &quot;&quot;;
        $next = false;
        // add each character to the result...
        for($i = 1; $i&lt;=$result_len; $i++){
            $index = ($number % $abc_len) - 1; // calculate the module
    
            // sometimes the index should be decreased by 1
            if( $next || $next = false ){
                $index--;
            }
    
            // this is the point that will be calculated in the next iteration
            $number = floor($number / strlen($abc));
    
            // if the index is negative, convert it to positive
            if( $next = ($index &lt; 0) ) {
                $index = $abc_len + $index;
            }

            $result = $abc[$index].$result; // concatenate the letter
        }
        return $result;
    }

Do you know a better way to do it? Maybe something to keep it simpler? or a performance improvement?

### Edit

ircmaxell&#39;s implementation works pretty fine. But, I&#39;m going to add this nice short one:

    function num2alpha($n)
    {
        for($r = &quot;&quot;; $n &gt;= 0; $n = intval($n / 26) - 1)
            $r = chr($n%26 + 0x41) . $r;
        return $r;
    }

Algorithm to get the excel-like column name of a number

I have a plugin (antrun) with an execution configured which has an id and is not bound to any phase. Can I execute this execution directly from the command line? 

    &lt;plugin&gt;
      &lt;artifactId&gt;maven-antrun-plugin&lt;/artifactId&gt;
      &lt;executions&gt;
        &lt;execution&gt;
          &lt;id&gt;my-execution&lt;/id&gt;
          ...
        &lt;/execution&gt;
      &lt;/executions&gt;
    &lt;/plugin&gt;

An run it with something like:
    
    mvn my-execution

or at least

    mvn magicplugin:execute -DexecutionId=my-execution

How to execute maven plugin execution directly from command line?

In my ASP.NET application, I was trying to add few white spaces between two text boxes by typing space bar. The equivalent HTML source was `&amp;#160;` instead of `&amp;nbsp;`. So I just wanted to check: is this the new replacement for white space? If yes, any idea why they changed?


Is &quot;&amp;#160;&quot; a replacement of &quot;&amp;nbsp;&quot;?

<p>In my ASP.NET application, I was trying to add few white spaces between two text boxes by typing space bar. The equivalent HTML source was <code>&#x26;#160;</code> instead of <code>&#x26;nbsp;</code>. So I just wanted to check: is this the new replacement for white space? If yes, any idea why they changed?</p>


Is it possible to use given coordinates in order to simulate a click in JavaScript within a webpage?

How to simulate a click by using x,y coordinates in JavaScript?

I&#39;m generating some inline images for an email sent from the iPad. Looks great in all desktop email clients, but gmail doesn&#39;t seem to like the base64 image and it shows up as text.

Anyone have any luck embedding images with base64 and gmail?
Or know of a better solution for sending HTML emails with images from the iPad?

Base64 images to gmail

This is a question I have been struggling with for a while. What is the proper way to mark up name/value pairs?

I&#39;m fond of the &amp;lt;dl&amp;gt; element, but it presents a problem: There is no way to separate one pair from another - they have no unique container. Visually, the code lacks definition. Semantically, though, I think this is the correct markup.

    &lt;dl&gt;
        &lt;dt&gt;Name&lt;/dt&gt;
        &lt;dd&gt;Value&lt;/dd&gt;
        &lt;dt&gt;Name&lt;/dt&gt;
        &lt;dd&gt;Value&lt;/dd&gt;
    &lt;/dl&gt;

In the above code, it is difficult to properly offset the pairs visually, both in code and rendered. If I wanted to, for instance, but a border around each pair, that would be a problem.

We may point to tables. It could be argued that name-value pairs are tabular data. That seems incorrect to me, but I see the argument. However, the HTML does not differentiate the name from the value, except in position, or with the addition of class names.

    &lt;table&gt;
        &lt;tr&gt;
            &lt;td&gt;Name&lt;/td&gt;
            &lt;td&gt;Value&lt;/td&gt;
        &lt;/tr&gt;
        &lt;tr&gt;
            &lt;td&gt;Name&lt;/td&gt;
            &lt;td&gt;Value&lt;/td&gt;
        &lt;/tr&gt;
    &lt;/table&gt;

This makes much more sense from a visual standpoint, both in code and in CSS. Styling the aforementioned border is trivial. However, as mentioned above, the semantics are fuzzy at best.

Thoughts, comments, questions?

**Edit/Update**
Perhaps this was something I should have explicitly mentioned in relation to structure, but a definition list also has the problem of not semantically grouping the pairs. The ordering and implicit border between a `dd` and a `dt` is easily understood,  but they still feel slightly off to me.

Semantics and Structure of Name-Value Pairs

This is what I am ultimately trying to achieve:
```JavaScript
//When the user clicks the liveshow button this happens
$(&quot;.liveshow-button&quot;).live(&#39;click&#39;, function() {
    if ($(&quot;.liveshowDiv2&quot;).css(&#39;display&#39;) == &#39;none&#39;) {
        $(&quot;.liveshowDiv2&quot;).fadeOut(ifadeOutSpeed, function() {
            $(&#39;#wrapper-div&#39;).animate({ 
                height: $(&#39;.liveshowDiv1&#39;).height() + &quot;px&quot; 
            }, 
            iresizeSpeed, function() {
                $(&#39;.liveshowDiv1&#39;).fadeIn(ifadeInSpeed, function());
            });
        });
    }
    else {
        alert(&#39;This never gets displayed&#39;);
        $(&quot;.liveshowDiv1&quot;).slideUp(&#39;fast&#39;);
    }
});
```
Basically I want to toggle between liveShowDiv1 being displayed and hidden when you click this button.  But since other things on the page can make liveShowDiv1 hidden, I can&#39;t just make a toggle function to do this.  I have to check somehow to see if liveShowDiv1 is being displayed or not.

**When it not displayed: display = none**


**When it is showing display is not in the style tag at all**

**How can I tell in JQuery when this div is displayed?**

JQuery Check to See if Div is Shown

I&#39;m experimenting with some styles on `&lt;textarea&gt;`s and I tried doing some stuff with `::before` and `::after` selectors and I couldn&#39;t to anything to get them to work. So the question is: is this possible? I know the CSS surrounding forms is arcane beyond mention but it seems like this should work.

Can a ::before selector be used with a &lt;textarea&gt;?

I have a SQL Server 2008 DB with many tables filled with data and I used SQL Server Management Studio to generate a SQL dump by using the Script Wizard : Tasks -&gt; Generate Scripts -&gt; Script All objects in the selected database and also selecting the option to Script Data. I made sure to change the value of &quot;Script for Server Version&quot; to &quot;SQL Server 2008&quot;. Then I created a new DB and ran the SQL dump on the new DB to generate an identical copy of the old DB. Then I assigned permissions to my default user to the new DB. Then I changed the connection string on my ASP.NET application to use the new DB. But when I run it, it throws the following exception - 

				Server Error in &#39;/myapp&#39; Application.
				The &#39;System.Web.Security.SqlMembershipProvider&#39; requires a database schema compatible with schema version &#39;1&#39;.  However, the current database schema is not compatible with this version.  You may need to either install a compatible schema with aspnet_regsql.exe (available in the framework installation directory), or upgrade the provider to a newer version.
				Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

				Exception Details: System.Configuration.Provider.ProviderException: The &#39;System.Web.Security.SqlMembershipProvider&#39; requires a database schema compatible with schema version &#39;1&#39;.  However, the current database schema is not compatible with this version.  You may need to either install a compatible schema with aspnet_regsql.exe (available in the framework installation directory), or upgrade the provider to a newer version.

				Source Error:

				An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

				Stack Trace:

				[ProviderException: The &#39;System.Web.Security.SqlMembershipProvider&#39; requires a database schema compatible with schema version &#39;1&#39;.  However, the current database schema is not compatible with this version.  You may need to either install a compatible schema with aspnet_regsql.exe (available in the framework installation directory), or upgrade the provider to a newer version.]
				   System.Web.Util.SecUtility.CheckSchemaVersion(ProviderBase provider, SqlConnection connection, String[] features, String version, Int32&amp; schemaVersionCheck) +1977772
				   System.Web.Security.SqlMembershipProvider.CheckSchemaVersion(SqlConnection connection) +89
				   System.Web.Security.SqlMembershipProvider.GetPasswordWithFormat(String username, Boolean updateLastLoginActivityDate, Int32&amp; status, String&amp; password, Int32&amp; passwordFormat, String&amp; passwordSalt, Int32&amp; failedPasswordAttemptCount, Int32&amp; failedPasswordAnswerAttemptCount, Boolean&amp; isApproved, DateTime&amp; lastLoginDate, DateTime&amp; lastActivityDate) +815
				   System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved, String&amp; salt, Int32&amp; passwordFormat) +105
				   System.Web.Security.SqlMembershipProvider.CheckPassword(String username, String password, Boolean updateLastLoginActivityDate, Boolean failIfNotApproved) +42
				   System.Web.Security.SqlMembershipProvider.ValidateUser(String username, String password) +78
				   System.Web.UI.WebControls.Login.AuthenticateUsingMembershipProvider(AuthenticateEventArgs e) +60
				   System.Web.UI.WebControls.Login.OnAuthenticate(AuthenticateEventArgs e) +119
				   System.Web.UI.WebControls.Login.AttemptLogin() +115
				   System.Web.UI.WebControls.Login.OnBubbleEvent(Object source, EventArgs e) +101
				   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +37
				   System.Web.UI.WebControls.Button.OnCommand(CommandEventArgs e) +118
				   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +166
				   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
				   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
				   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
				   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1565



The &#39;System.Web.Security.SqlMembershipProvider&#39; requires a database schema compatible with schema version &#39;1&#39;

I just wanted to hear some authorities on when and where you should use a `LITERAL` control over a `LABEL`. 

As I understand it, the difference is this: A `LABEL` can be styled via the `&lt;SPAN&gt;` tags that are added.

I personally find the addition of `&lt;SPAN&gt;` tags in my HTML to be very annoying and never actually apply styles through ASP, and so `LITERAL`s seem to be what should be used most of the time... but I&#39;m concerned there&#39;s *other* considerations or benefits to using a LABEL over it that I&#39;m unaware of.

**Is it 100% fine to replace any `LABEL`s with `LITERAL`s, provided we&#39;re not applying styles to them? Are there NO other considerations?**


ASP.Net: Literal vs Label

How can I enable remote requests in IIS Express? [Scott Guthrie wrote that is possible][1] but he didn&#39;t say how.



  [1]: http://weblogs.asp.net/scottgu/archive/2010/06/28/introducing-iis-express.aspx

How to enable external request in IIS Express?

I&#39;m getting this exception:

&gt; System.Configuration.ConfigurationErrorsException: The value for the
&gt; &#39;compilerVersion&#39; attribute in the provider options must be &#39;v4.0&#39; or
&gt; later if you are compiling for version 4.0 or later of the .NET
&gt; Framework.

What should I do to resolve this?

How do I fix the &quot;compilerVersion&quot; IIS error?

I have troubles with blowery web and WebResource.axd.

What is WebResource.axd?

What is WebResource.axd?

I&#39;m using Visual Studio 2008 and I have just noticed that the debugger is displaying integer values as Hex when I hover over variables and also in the immediate window.  I guess I must have hit a shortcut key accidently or something.

Anyone had this before?  How do I set it back to display in decimal?

Visual Studio debugger - Displaying integer values in Hex

How do I change the folder of my existing solution file (sln)?

It&#39;s right now inside one of my project&#39;s folder; if I cut the solution file and paste it in the root folder,it doesn&#39;t load any of my projects.

change solution file to a different folder

When I try to build my solution, I get the following error:

&gt;Visual Studio cannot start debugging because the debug target &#39;c:\target&#39; is missing. Please &gt;build the project and retry, or set the OutputPath and AssemblyName properties appropriately &gt;to point at the correct location for the target assembly.  

My output path is set correctly to **bin\Debug**, but the exe is never created in that folder.  Instead, all I get are the `exe.config`, `vshost.exe`, and `vshost.exe.config` files.

Any idea what&#39;s going on?

Debug Target Is Missing?

__Direct Question:__ If I have two files with the same name (but in different directories), it appears that only Visual Studio 2005 can handle this transparently??  VS 2008 &amp; 2010 require a bunch of tweaking?  Aside from my naming convention, am I doing something wrong?

__Background:__

I&#39;m developing C++ statistical libraries...  I have two folders:

    / Univariate
    
    Normal.cpp
    Normal.h
    Beta.cpp
    Beta.h
    Adaptive.cpp
    Adaptive.h
    
    / Multivariate
    
    Normal.cpp
    Normal.h
    Beta.cpp
    Beta.h
    Adaptive.cpp
    Adaptive.h

I need to support cross compilation -- I&#39;m using g++/make to compile these same files into a library in Linux.  They work just fine.

I had been using Visual Studio 2005 without issue, but I need to upgrade to Visual Studio 2008 or 2010 (currently drooling over nVidia&#39;s nsight tool).  However, I&#39;m having trouble if I add files to a project with the same name (even if they&#39;re in a different directory).  I&#39;m willing to change my naming convention, but I&#39;m curious if others have encountered this problem and have found any __well__ documented solutions??

I&#39;m further boggled by the fact that if I upgrade from 2005 projects to 2010 projects, it appears that VS 2010 __is__ able to correctly handle two source files with the same name in different directories; however, if I remove one of the duplicate files and then add it back to the project I am greeted by the following warning:

Distributions\Release\Adaptive.obj : warning LNK4042: object specified more than once; extras ignored

Now I have the intermediate directory specified as $(ProjectName)\$(Configuration) -- I need to have my object files in a different location from my source tree.  So I can see why it&#39;s copying the object files on top of each other, but when the projects are converted from 2005 to 2008 or 2010, a bunch of conditional compiles are added:

    &lt;ObjectFileName Condition=&quot;&#39;$(Configuration)|$(Platform)&#39;==&#39;Release|x64&#39;&quot;&gt;$(IntDir)%(Filename)1.obj&lt;/ObjectFileName&gt;
    &lt;XMLDocumentationFileName Condition=&quot;&#39;$(Configuration)|$(Platform)&#39;==&#39;Release|x64&#39;&quot;&gt;$(IntDir)%(Filename)1.xdc&lt;/XMLDocumentationFileName&gt;

These are accessible from the Source file Properties page in C/C++ -&gt; Output Files -&gt; &quot;Object File Name&quot; &amp; &quot;XML Documentation File Name&quot;.  But if I simply add the file directly (or remove and re-add them), VS doesn&#39;t complain until I try to compile, but also never adds the conditional directives -- So in order for things to work correctly, I have to add the conditional directives myself for every single configuration.  Am I making a mistake / poor assumption or have I uncovered a valid bug in VS 2008 / 2010?


Visual Studio 2010 &amp; 2008 can&#39;t handle source files with identical names in different folders?

Very easy today, I think.  In C#, its:

    Dictionary&lt;String, String&gt; dict = new Dictionary&lt;string, string&gt;() { { &quot;&quot;, &quot;&quot; } };

But in vb, the following doesn&#39;t work.

    Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) ((&quot;&quot;,&quot;&quot;))

I&#39;m pretty sure there&#39;s a way to add them at declaration, but I&#39;m not sure how.  And yes, I want to add them at declaration, not any other time.  :)  So hopefully it&#39;s possible.  Thanks everyone.

I&#39;ve also tried:

    Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) ({&quot;&quot;,&quot;&quot;})

And...

    Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) {(&quot;&quot;,&quot;&quot;)}

And...

    Public dict As Dictionary(Of String, String) = New Dictionary(Of String, String) {{&quot;&quot;,&quot;&quot;}}

Add keys/values to Dictionary at declaration

I am reading about the charater set and encodings on Windows. I noticed that there are two compiler flags in Visual Studio compiler (for C++) called MBCS and UNICODE. What is the difference between them ? What I am not getting is how UTF-8 is conceptually different from a MBCS encoding ? Also, I found the following quote in [MSDN][1]:

&gt; Unicode is a 16-bit character encoding

This negates whatever I read about the Unicode. I thought unicode can be encoded with different encodings such as UTF-8 and UTF-16. Can somebody shed some more light on this confusion?


  [1]: http://msdn.microsoft.com/en-us/library/cwe8bzh0%28VS.80%29.aspx

Difference between MBCS and UTF-8 on Windows

What was the original historical use of the vertical tab character (`\v` in the C language, ASCII 11)?

Did it ever have a key on a keyboard? How did someone generate it?

Is there any language or system still in use today where the vertical tab character does something interesting and useful?


What is a vertical tab?

I&#39;m trying to parse a file in C# that has field (string) arrays separated by ASCII character codes 0, 1 and 2 (in Visual Basic 6 you can generate these by using Chr(0) or Chr(1) etc.)

I know that for character code 0 in C# you can do the following:

    char separator = &#39;\0&#39;;

But this doesn&#39;t work for character codes 1 and 2?

How to get a char from an ASCII Character Code in C#

How can I set the charset with JAX-RS? I&#39;ve tried `@Produces(&quot;text/html; charset=UTF-8&quot;)` but that was ignored and only `text/html` was send with the HTTP header. I want to set the charset within a MessageBodyWriter, but don&#39;t want to extract the media type by analysing the @Produces annotation via reflection by myself.

How to set the charset with JAX-RS?

I&#39;m using an &#39;`&amp;`&#39; symbol with HTML5 and UTF-8 in my site&#39;s `&lt;title&gt;`. Google shows the ampersand fine on its [SERPs][1], as do all the browsers in their titles.

http://validator.w3.org is giving me this:

&gt; &amp; did not start a character reference. (&amp; probably should have been escaped as `&amp;amp;`.)

Do I really need to do `&amp;amp;`?

I&#39;m not fussed about my pages validating for the sake of validating, but I&#39;m curious to hear people&#39;s opinions on this and if it&#39;s important and why.

  [1]: https://en.wikipedia.org/wiki/Search_engine_results_page





Content Type	Original Author	Original Content on Stackoverflow
Question	Anto Varghese	View Question on Stackoverflow
Solution 1 - Html	Ignacio Vazquez-Abrams	View Answer on Stackoverflow
Solution 2 - Html	JAL	View Answer on Stackoverflow
Solution 3 - Html	josh3736	View Answer on Stackoverflow

Is " " a replacement of " "?

Html Problem Overview

Html Solutions

Solution 1 - Html

Solution 2 - Html

Solution 3 - Html

How to execute maven plugin execution directly from command line?

Algorithm to get the excel-like column name of a number

Attributions