[Convert.ToInt32(String, Int32)](http://msdn.microsoft.com/en-us/library/1k20k614.aspx) lets you specify the base:

    int output = Convert.ToInt32(input, 2);

Given the pid of a Linux process, I want to check, from a C program, if the process is still running.

Check if process exists given its pid

Does bootstrap 2.0 have any helpers to make .span1, .span2 .... .span12 equal height. I&#39;ve nested this type of html

	&lt;div class=&#39;container&#39;&gt;
	  &lt;div class=&#39;row&#39;&gt;
	    &lt;div class=&#39;span2&#39;&gt;
	      &lt;div class=&#39;well&#39;&gt;
	        XXXX
	      &lt;/div&gt;
	    &lt;/div&gt;
	    &lt;div class=&#39;span2&#39;&gt;
	      &lt;div class=&#39;well&#39;&gt;
	        XXXX
	        XXXX
	      &lt;/div&gt;
	    &lt;/div&gt;
	    &lt;div class=&#39;span2&#39;&gt;
	      &lt;div class=&#39;well&#39;&gt;
	        XXXX
	        XXXX
	        XXXX
	      &lt;/div&gt;
	    &lt;/div&gt;
	  &lt;/div&gt;
	&lt;/div&gt;

				
I would like each well to end up the same height if possible?



Using twitter bootstrap 2.0 - How to make equal column heights?

I would like to convert a binary number writen in a String into its integer value. 

For example: 
 
    string input = &quot;0101&quot;;
    int output = convert(input);

`output` should be equal to `5` 

Convert binary string into integer

I would like to convert a binary number writen in a String into its integer value.
For example:
<pre><code class="hljs language-ini">string input = "0101";
int output = convert(input);
</code></pre>
<code>output</code> should be equal to <code>5</code>

I have a .Net-Windows application in C#. I need to open an excel and process it. How can I do this without using Microsoft.Office.Interop.Excel libraries?

How to read an excel file in C# without using Microsoft.Office.Interop.Excel libraries

I have an enum:

    public enum Action {
        Remove=1,
        Add=2
    }

And a class:

    [DataContract]
    public class Container {
        [DataMember]
        public Action Action {get; set;}
    }

When serialize instance of Container to json I get: `{Action:1}` (in case Action is Remove).

   
I would like to get: `{Action:Remove}` (instead of int I need to ToString form of the enum)

Can I do it without adding another member to the class?

Serialize enum to string

I have new XmlDocument object, i.g. xml is created during my program...

I want all numeric values in created xml was with dot symbol instead of comma by default.

Can I do something to declare it once, not to parse every decimal value?

I.e. To set up this dot instead of comma somewhere in the beginning and don&#39;t worry about this till the end?

Set up dot instead of comma in numeric values

How can I convert properly this SQL to linq

    select  t1.ProgramID
    from Program t1 LEFT JOIN ProgramLocation t2 ON  t1.ProgramID = t2.ProgramID 
    where t2.ProgramID IS NULL

I try that but it not working 

    var progy = (
                 from u in db.ProgramLocations join b in db.Programs
                 on u.ProgramID equals b.ProgramID into yG 
                 from y1 in yG.DefaultIfEmpty() 
                 where u.ProgramID == null
                 where u.ProgramID == null 
                 select u.ProgramID
                ).ToList();

THANKS


Convert SQL to Linq left join with null

I&#39;m wondering if this construction will cause an error:

    lock(sync)
    {
      // something
      lock(sync)
      {
        //something
        lock(sync)
        {
          //something
        }
      }
    }

I&#39;ve run this code, and it seems fine, but maybe in some circumstances an error may be thrown?

lock inside lock

When you call `ToByteArray()` on a GUID in .NET, the ordering of the bytes in the resulting array is not what you&#39;d expect as compared to the string representation of the GUID.  For example, for the following GUID represented as a string:

    11223344-5566-7788-9900-aabbccddeeff

The result of `ToByteArray()` is this:

    44, 33, 22, 11, 66, 55, 88, 77, 99, 00, AA, BB, CC, DD, EE, FF

Note that the order of the first four bytes is reversed.  Also bytes 4 and 5 are swapped and bytes 6 and 7 are swapped.  But the final 8 bytes are in the same order they&#39;re represented as in the string.

I understand that this is occurring.  What I would like to know is why .NET handles it this way.

For reference, you can see some discussion and confusion about this (incorrect attributed to Oracle databases) [here][1] and [here][2].


  [1]: https://stackoverflow.com/questions/2667740/convert-byte-array-from-oracle-raw-to-system-guid
  [2]: https://stackoverflow.com/questions/7289734/convert-from-oracles-raw16-to-nets-guid

Why does Guid.ToByteArray() order the bytes the way it does?

The following code gives you a compiler error, as you&#39;d expect:

    List&lt;Banana&gt; aBunchOfBananas = new List&lt;Banana&gt;();

    Banana justOneBanana = (Banana)aBunchOfBananas;

However, when using `IEnumerable&lt;Banana&gt;`, you merely get a runtime error.

    IEnumerable&lt;Banana&gt; aBunchOfBananas = new List&lt;Banana&gt;();

    Banana justOneBanana = (Banana)aBunchOfBananas;

Why does the C# compiler allow this?

Why does the C# compiler allow an explicit cast between IEnumerable&lt;T&gt; and TAlmostAnything?

I am new to asynchronous programming with the `async` modifier. I am trying to figure out how to make sure that my `Main` method of a console application actually runs asynchronously.

    class Program
    {
        static void Main(string[] args)
        {
            Bootstrapper bs = new Bootstrapper();
            var list = bs.GetList();
        }
    }

    public class Bootstrapper {

        public async Task&lt;List&lt;TvChannel&gt;&gt; GetList()
        {
            GetPrograms pro = new GetPrograms();

            return await pro.DownloadTvChannels();
        }
    }

I know this is not running asynchronously from &quot;the top.&quot; Since it is not possible to specify the `async` modifier on the `Main` method, how can I run code within `main` asynchronously?

Can&#39;t specify the &#39;async&#39; modifier on the &#39;Main&#39; method of a console app

I want to cast data like `[1,2,&#39;a&#39;,&#39;He said &quot;what do you mean?&quot;&#39;]` to a CSV-formatted string. 

Normally one would use `csv.writer()` for this, because it handles all the crazy edge cases (comma escaping, quote mark escaping, CSV dialects, etc.) The catch is that `csv.writer()` expects to output to a file object, not to a string.

My current solution is this somewhat hacky function:

    def CSV_String_Writeline(data):
        class Dummy_Writer:
            def write(self,instring):
                self.outstring = instring.strip(&quot;\r\n&quot;)
        dw = Dummy_Writer()
        csv_w = csv.writer( dw )
        csv_w.writerow(data)
        return dw.outstring

Can anyone give a more elegant solution that still handles the edge cases well?



Edit: Here&#39;s how I ended up doing it:

    def csv2string(data):
        si = StringIO.StringIO()
        cw = csv.writer(si)
        cw.writerow(data)
        return si.getvalue().strip(&#39;\r\n&#39;)

How do I write data into CSV format as string (not file)?

I just read some recommendations on using 

    std::string s = get_string();
    std::string t = another_string();
    
    if( !s.compare(t) ) 
    {


instead of 

    if( s == t )
    {

I&#39;m almost always using the last one because I&#39;m used to it and it feels natural, more readable. I didn&#39;t even know that there was a separate comparison function.
To be more precise, I thought == would call compare().

**What are the differences? In which contexts should one way be favored to the other?**

I&#39;m considering only the cases where I need to know if a string is the same value as another string.


Differences between C++ string == and compare()?

Groovy adds the `isAllWhitespace()` method to Strings, which is great, but there doesn&#39;t seem to be a _good_ way of determining if a String has something other than _just_ white space in it.

The best I&#39;ve been able to come up with is:

    myString &amp;&amp; !myString.allWhitespace

But that seems too verbose. This seems like such a common thing for validation that there _must_ be a simpler way to determine this.

How can I determine if a String is non-null and not only whitespace in Groovy?

I try to do a simple string replacement, but I don&#39;t know why it doesn&#39;t seem to work:

&lt;!-- language: lang-python --&gt;

    X = &quot;hello world&quot;
    X.replace(&quot;hello&quot;, &quot;goodbye&quot;)

I want to change the word `hello` to `goodbye`, thus it should change the string `&quot;hello world&quot;` to `&quot;goodbye world&quot;`. But X just remains `&quot;hello world&quot;`. Why is my code not working?

Why doesn&#39;t calling a string method do anything unless its output is assigned?

How do I write a function to split and return an array for a string with delimiters in the C programming language?

    char* str = &quot;JAN,FEB,MAR,APR,MAY,JUN,JUL,AUG,SEP,OCT,NOV,DEC&quot;;
    str_split(str,&#39;,&#39;);


Split string with delimiters in C

I need a fast way to count the number of bits in an integer in python.
My current solution is

    bin(n).count(&quot;1&quot;)

but I am wondering if there is any faster way of doing this?

PS: (i am representing a big 2D binary array as a single list of numbers and doing bitwise operations, and that brings the time down from hours to minutes. and now I would like to get rid of those extra minutes.

Edit: 
1. it has to be in python 2.7 or 2.6

and optimizing for small numbers does not matter that much since that would not be a clear bottleneck, but I do have numbers with 10 000 + bits at some places

for example this is a 2000 bit case:

    12448057941136394342297748548545082997815840357634948550739612798732309975923280685245876950055614362283769710705811182976142803324242407017104841062064840113262840137625582646683068904149296501029754654149991842951570880471230098259905004533869130509989042199261339990315125973721454059973605358766253998615919997174542922163484086066438120268185904663422979603026066685824578356173882166747093246377302371176167843247359636030248569148734824287739046916641832890744168385253915508446422276378715722482359321205673933317512861336054835392844676749610712462818600179225635467147870208L
    

Fast way of counting non-zero bits in positive integer

I have an array of Strings that represent Binary numbers (without leading zeroes) that I want to convert to their corresponding base 10 numbers. Consider:

    binary 1011 becomes integer 11
    binary 1001 becomes integer 9
    binary   11 becomes integer 3   etc. 

What&#39;s the best way to proceed? I&#39;ve been exploring java.lang.number.* without finding a direct conversion method. `Integer.parseInt(b)` yields an integer EQUAL to the String...e.g., 1001 becomes 1,001 instead of 9...and does not seem to include a parameter for an output base. `toBinaryString` does the conversion the wrong direction. I suspect I&#39;ll need to do a multistep conversion, but can&#39;t seem to find the right combination of methods or subclasses. I&#39;m also not sure the extent to which leading zeros or lack thereof will be an issue. Anyone have any good directions to point me?



How to convert a Binary String to a base 10 integer in Java

what is the best practice of distributing binaries from a github project? 

I can think of:

 - Create a bin folder in your project where you keep a copy of the binaries. 
   However, github is meant to store source code and not binaries Storing large and 
   regularly changing binaries may be expensive qua diskspace and bandwidth?
 - Upload a copy of the binaries to the [github pages](http://pages.github.com/) of the 
   project, or use a separate web site for hosting your binaries. 
   However, that is not always feasible, and requires more (hand)work to keep the
   binaries up to date, I rather want to have the binaries updated automatically or with a
   single action. 
 

what is the best practice of distributing binaries from a github project?

I need to copy the content of a folder which contains binary files to one binary file in another directory. 

In Windows I can just use:

    copy file1 + file2 targetfile /B 

I couldn&#39;t find something similar for Linux (I saw an approach with `cat`, but I&#39;m unsure if this really works for binary files).

How can I copy several binary files into one file on a Linux system?

I have a buffer with some binary data:

    var b = new Buffer ([0x00, 0x01, 0x02]);

and I want to append `0x03`.

How can I append more binary data? I&#39;m searching in the documentation but for appending data it must be a string, if not, an error occurs (*TypeError: Argument must be a string*):

    var b = new Buffer (256);
    b.write (&quot;hola&quot;);
    console.log (b.toString (&quot;utf8&quot;, 0, 4)); //hola
    b.write (&quot;, adios&quot;, 4);
    console.log (b.toString (&quot;utf8&quot;, 0, 11)); //hola, adios

Then, the only solution I can see here is to create a new buffer for every appended binary data and copy it to the major buffer with the correct offset:

    var b = new Buffer (4); //4 for having a nice printed buffer, but the size will be 16KB
    new Buffer ([0x00, 0x01, 0x02]).copy (b);
    console.log (b); //&lt;Buffer 00 01 02 00&gt;
    new Buffer ([0x03]).copy (b, 3);
    console.log (b); //&lt;Buffer 00 01 02 03&gt;

But this seems a bit inefficient because I have to instantiate a new buffer for every append.

Do you know a better way for appending binary data?


  [1]: https://github.com/Gagle/Node-BufferedWriter
  [2]: https://github.com/Gagle/Node-BufferedReader


**EDIT**

I&#39;ve written a [BufferedWriter][1] that writes bytes to a file using internal buffers. Same as [BufferedReader][2] but for writing.

A quick example:

    //The BufferedWriter truncates the file because append == false
    new BufferedWriter (&quot;file&quot;)
    	.on (&quot;error&quot;, function (error){
    		console.log (error);
    	})
    	
    	//From the beginning of the file:
    	.write ([0x00, 0x01, 0x02], 0, 3) //Writes 0x00, 0x01, 0x02
    	.write (new Buffer ([0x03, 0x04]), 1, 1) //Writes 0x04
    	.write (0x05) //Writes 0x05
    	.close (); //Closes the writer. A flush is implicitly done.
    
    //The BufferedWriter appends content to the end of the file because append == true
    new BufferedWriter (&quot;file&quot;, true)
    	.on (&quot;error&quot;, function (error){
    		console.log (error);
    	})
    	
    	//From the end of the file:
    	.write (0xFF) //Writes 0xFF
    	.close (); //Closes the writer. A flush is implicitly done.
    
    //The file contains: 0x00, 0x01, 0x02, 0x04, 0x05, 0xFF

**LAST UPDATE**

Use [concat](http://nodejs.org/api/buffer.html#buffer_class_method_buffer_concat_list_totallength).

Content Type	Original Author	Original Content on Stackoverflow
Question	Christopher Chiche	View Question on Stackoverflow
Solution 1 - C#	Heinzi	View Answer on Stackoverflow

Convert binary string into integer

C# Problem Overview

C# Solutions

Solution 1 - C#

Using twitter bootstrap 2.0 - How to make equal column heights?

Check if process exists given its pid

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