You can append `,ac` to the watch expression to have it automatically refresh the value

&gt; x.ToString(),ac


See http://msdn.microsoft.com/en-us/library/e514eeby.aspx for more information and other format specifiers.

thanks to Scott https://stackoverflow.com/questions/1049995/visual-studio-make-debugger-aware-that-a-function-doesnt-cause-side-effects

I&#39;m trying to create a popup window that only appears the first time the application starts. I want it to display some text and have a button to close the popup. However, I&#39;m having troubles getting the PopupWindow to even work. I&#39;ve tried two different ways of doing it:

First I have an XML file which declares the layout of the popup called popup.xml (a textview inside a linearlayout) and I&#39;ve added this in the OnCreate() of my main Activity:

    PopupWindow pw = new PopupWindow(findViewById(R.id.popup), 100, 100, true);
        pw.showAtLocation(findViewById(R.id.main), Gravity.CENTER, 0, 0);

Second I did the exact same with this code:

    final LayoutInflater inflater = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        PopupWindow pw = new PopupWindow(inflater.inflate(R.layout.popup, (ViewGroup) findViewById(R.layout.main) ), 100, 100, true);
        pw.showAtLocation(findViewById(R.id.main_page_layout), Gravity.CENTER, 0, 0);

The first throws a NullPointerException and the second throws a BadTokenException and says &quot;Unable to add window -- token null is not valid&quot;

What in the world am I doing wrong? I&#39;m extremely novice so please bear with me.

Problems creating a Popup Window in Android Activity

For normal columns, you can get at them via the `columns` class method. However, associations may be named something quite different if the `foreign_key` option is set in the relationship method. For example, given

    class Post
      has_many :comments, :foreign_key =&gt; :message_id # this is a contrived example
    end

if I did `Post.column_names` I could get at `message_id`, but is there any way to get `comments`?


How to get activerecord associations via reflection

I&#39;m getting this message in watch box.  
Actually, my expression doesn&#39;t have any side effect, and I need to re-evaluate it automatically each time. How can I achieve that?

&quot;This expression causes side effects and will not be evaluated&quot;. How to suppress?

<p>I'm getting this message in watch box.<br>
Actually, my expression doesn't have any side effect, and I need to re-evaluate it automatically each time. How can I achieve that?</p>


I&#39;d like to store the hash of a password on the phone, but I&#39;m not sure how to do it. I can only seem to find encryption methods. How should the password be hashed properly?


How to hash a password

I have a **WPF C#** application that contains a button. 

The code of the button click is written in separate text file which will be placed in the applications runtime directory. 

I want to ***execute*** that code placed in the text file on the click of the button.

Any idea how to do this?
 

execute c# code at runtime from code file

What is the best way to convert a `double` to an `int`? Should a cast be used?

convert double to int

I want to know the difference between the `public` and `internal` visibility modifiers.

When should we use `internal` on a class and when `public`? I am confused with when a method should be `public` or `internal`.

I read that `internal` can be accessed through the assembly, while `public` can also be used through the assembly. Then where does the difference lie?

internal vs public in C#

i have installed many third party plugin add-ins in my visual studio.


now i want to run a instance of visual studio without all plugin addons and third party feature


just like mozilla firefox


how i can run visual studio without all plugin or add-ons. are their any method exist like other application

how to run visual studio without plugin and all third party feature

In VS2010, I noticed that the &quot;output window&quot; is shown every time we compile the solution, even if we have had close it.

In VS2008, that wasn&#39;t the case. I don&#39;t mind this output window. I prefer looking at the &quot;Error window&quot; only, and only if it is necessary. In VS2008, it was perfect.

How to disable the systematic displaying of the &quot;output window&quot; in VS2010?

Disable displaying of &quot;output window&quot; at each compilation

I&#39;m a bit confused regarding the difference between `push_back` and `emplace_back`.

    void emplace_back(Type&amp;&amp; _Val);
    void push_back(const Type&amp; _Val);
    void push_back(Type&amp;&amp; _Val);

As there is a `push_back` overload taking a rvalue reference I don&#39;t quite see what the purpose of `emplace_back` becomes?

push_back vs emplace_back

Is there a way in visual studio to change the behavior when I double click a file in the &#39;Pending Changes&#39; view.

The default behavior is, that Visual Studio opens the file in code editor, but I want that it opens the &#39;Compare&#39;-Dialog with the latest version. (same behavior as in TortoiseSVN)



Compare files on double click in Pending Changes view

I have dozens of unit tests, and I&#39;d like to fix the code I am working on now, but every time I run the tests it takes over 30 seconds to run every unit test (I think reflection is the cause of some of these being especially slow). My current test and many other tests take less than one second to run, but it is annoying to disable and then enable specific unit tests.

Is there a way to say, &quot;For now, run a single, specific test?&quot;

I&#39;m using Visual Studio 2010 with the built-in unit test system. I create tests by right-clicking any code and selecting &quot;create unit test&quot; which creates a project.

Run specific unit test in Visual Studio

I&#39;m debugging some tricky generic List-based code in VS 2010 - lots of hierarchy-processing etc.. Of course lambda expressions and anonymous methods aren&#39;t permitted within the immediates window and I can&#39;t be doing with stepping thru the code in the usual way as I&#39;m still trying to get my head around the hierarchies ...

Can anyone suggest a workaround or an alternative tool?

Visual Studio Immediate Window - Lambda Expressions Aren&#39;t Allowed - Is there a Work-around or Alternative?

Is there a shortcut to clear all breakpoints within all projects within a solution in Visual Studio?


Clear all breakpoints in a Visual Studio solution

I come from a C++ background, so apologies if this is a non-C# way of thinking, but I just need to know. :)

In C++ if I have two pointers, and I want to know if they point to the same thing, I can look in the memory/watch window and see their value - to see if they are pointing to the same memory space.

In C#, I haven&#39;t been able to find something along those lines.  One reference type with exactly the same values could in fact be the exact same object, or it could be something wildly different.

Is there a way for me to see this kind of information in C#?  Perhaps some kind of equivalent to the &amp; operator for the watch window or some such?

Uniquely Identifying Reference Types in the Debugger

Summary:

memcpy seems unable to transfer over 2GB/sec on my system in a real or test application. What can I do to get faster memory-to-memory copies?

Full details:

As part of a data capture application (using some specialized hardware), I need to copy about 3 GB/sec from temporary buffers into main memory. To acquire data, I provide the hardware driver with a series of buffers (2MB each). The hardware DMAs data to each buffer, and then notifies my program when each buffer is full. My program empties the buffer (memcpy to another, larger block of RAM), and reposts the processed buffer to the card to be filled again. I am having issues with memcpy moving the data fast enough. It seems that the memory-to-memory copy should be fast enough to support 3GB/sec on the hardware that I am running on. Lavalys EVEREST gives me a 9337MB/sec memory copy benchmark result, but I can&#39;t get anywhere near those speeds with memcpy, even in a simple test program.

I have isolated the performance issue by adding/removing the memcpy call inside the buffer processing code. Without the memcpy, I can run full data rate- about 3GB/sec. With the memcpy enabled, I am limited to about 550Mb/sec (using current compiler).

In order to benchmark memcpy on my system, I&#39;ve written a separate test program that just calls memcpy on some blocks of data. (I&#39;ve posted the code below) I&#39;ve run this both in the compiler/IDE that I&#39;m using (National Instruments CVI) as well as Visual Studio 2010. While I&#39;m not currently using Visual Studio, I am willing to make the switch if it will yield the necessary performance. However, before blindly moving over, I wanted to make sure that it would solve my memcpy performance problems.

Visual C++ 2010: 1900 MB/sec

NI CVI 2009: 550 MB/sec

While I am not surprised that CVI is significantly slower than Visual Studio, I am surprised that the memcpy performance is this low. While I&#39;m not sure if this is directly comparable, this is much lower than the EVEREST benchmark bandwidth. While I don&#39;t need quite that level of performance, a minimum of 3GB/sec is necessary. Surely the standard library implementation can&#39;t be this much worse than whatever EVEREST is using!

What, if anything, can I do to make memcpy faster in this situation?

--------------

Hardware details:
AMD Magny Cours- 4x octal core
128 GB DDR3
Windows Server 2003 Enterprise X64

Test program:

	#include &lt;windows.h&gt;
	#include &lt;stdio.h&gt;

	const size_t NUM_ELEMENTS = 2*1024 * 1024;
	const size_t ITERATIONS = 10000;

	int main (int argc, char *argv[])
	{
		LARGE_INTEGER start, stop, frequency;
	
		QueryPerformanceFrequency(&amp;frequency);
	
		unsigned short * src = (unsigned short *) malloc(sizeof(unsigned short) * NUM_ELEMENTS);
		unsigned short * dest = (unsigned short *) malloc(sizeof(unsigned short) * NUM_ELEMENTS);
	
		for(int ctr = 0; ctr &lt; NUM_ELEMENTS; ctr++)
		{
			src[ctr] = rand();
		}
		
		QueryPerformanceCounter(&amp;start);
	
		for(int iter = 0; iter &lt; ITERATIONS; iter++)
			memcpy(dest, src, NUM_ELEMENTS * sizeof(unsigned short));
	
		QueryPerformanceCounter(&amp;stop);
	
		__int64 duration = stop.QuadPart - start.QuadPart;
	
		double duration_d = (double)duration / (double) frequency.QuadPart;
	
		double bytes_sec = (ITERATIONS * (NUM_ELEMENTS/1024/1024) * sizeof(unsigned short)) / duration_d;
	
		printf(&quot;Duration: %.5lfs for %d iterations, %.3lfMB/sec\n&quot;, duration_d, ITERATIONS, bytes_sec);
	
		free(src);
		free(dest);

		getchar();
    
		return 0;
	}

EDIT: If you have an extra five minutes and want to contribute, can you run the above code on your machine and post your time as a comment?

How to increase performance of memcpy

Every time I edit a resource file in VS, it regenerates the corresponding code and sets the class access modifier to internal.  
It&#39;s a pain to Ctrl-F -&gt; ReplaceAll every time I edit the resx. Is there a property/setting so that I can default this to public?


    internal class MyResource {

         internal static global::System.Resources.ResourceManager ResourceManager {...}

    }

I need all those &lt;code&gt;internal&lt;/code&gt; to be &lt;code&gt;public&lt;/code&gt; all the time.

Content Type	Original Author	Original Content on Stackoverflow
Question	fithu	View Question on Stackoverflow
Solution 1 - C#	zproxy	View Answer on Stackoverflow

"This expression causes side effects and will not be evaluated". How to suppress?

C# Problem Overview

C# Solutions

Solution 1 - C#

How to get activerecord associations via reflection

Problems creating a Popup Window in Android Activity

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