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• Why am I getting a TypeLoadException when defining a custom profile?

  - by Jedidja

  I'm writing a .NET command-line application that will migrate users from an existing database into aspnetdb. To simplify the user-specific settings, I'm using the profile class that Joel Spolsky wrote about here. It works great in the ASP.NET MVC website, but for some reason it's throwing a TypeLoadException when being used from this new application. I'm not sure why the framework is trying to load the new class from System.Web.

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• Why is my boot loader's stack segment at 0x3FF (end of Real Mode IVT)?

  - by Laurimann

  Title says it all. "address 0x500 is the last one used by the BIOS" - en.wikipedia.org/wiki/Master_boot_record "00000000-000003FF Real Mode IVT (Interrupt Vector Table)" - wiki.osdev.org/Memory_Map_%28x86%29 So can you tell me why NASM places my .com file's stack pointer to 0x3FF while my instruction pointer starts at 0x7c00? To me the most intuitive place for SP would be right below 0x7c00. Thanks.

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• Why do some compilers use "a.out" as the default name for executables?

  - by Ville Laurikari

  Most UNIX C compilers link executables by default to a file called "a.out". Why? Is this a written standard or just de-facto standard behavior? What would break if these compilers would just produce an error message (or use a different default name) instead of producing "a.out"?

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• Why IIS 6.0 metabase compatibility is required to be installed on IIS 7.0?

  - by ASV

  I recently encountered some harrowing time with our application not able to run its installer due to the non-availability of IIS 6.0 metabase compatibility on my Win2008 machine. I am curios to know why is this required anyway???? Kindly provide insights... Thanks in advance :)

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• Why is Microsoft not developing a Halo-like next gen title using C#? [closed]

  - by Joan Venge

  The question might look subjective but considering Microsoft: Owns the Xbox 360 platform Owns the Windows platform Have their own game studio (MGS) Own other 3rd party developers Is a major publisher makes me wonder why Microsoft doesn't push their flagship language to prove that not only you can cut down significant development time, and therefore money, but also show that you can release a next gen title where the real time interactivity doesn't suffer. If Microsoft were to do this once, I am sure many AAA developers would jump on that wagon too.

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• Why must recursion be in a separate file in hugs?

  - by Casebash

  In Haskell in 5 steps the factorial function is defined as follows: let fac n = if n == 0 then 1 else n * fac (n-1) But for hugs, it says that fac needs to be in fac.h. Can anyone explain why this is the case - missing the ability to define recursion seems like a massive limitation for an interpreter.

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• Why would a Delphi programmer use Lazarus as the IDE instead of using Delphi's IDE?

  - by lkessler

  I've been very happy with the Delphi IDE for programming in Delphi. But I've heard about the Lazarus programming environment, and I've also heard that some Delphi programmers use it instead of the Delphi IDE. What are the advantages that Lazarus has over the Delphi IDE, and why would, or should a Delphi programmer switch to it?

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• Why is using OPENQUERY on a local server bad?

  - by Ziplin

  I'm writing a script that is supposed to run around a bunch of servers and select a bunch of data out of them, including the local server. The SQL needed to SELECT the data I need is pretty complicated, so I'm writing sort of an ad-hoc view, and using an OPENQUERY statement to get the data, so ultimately I end up looping over a statement like this: exec('INSERT INTO tabl SELECT * FROM OPENQUERY(@Server, @AdHocView)') However, I've heard that using OPENQUERY on the local server is frowned upon. Could someone elaborate as to why?

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• Why the letter case inconsistency between src and res/layout?

  - by Peter vdL

  I called my main activity Main, and Eclipse created Main.java and res/layout/main.xml for the layout. Is there any reason why Eclipse dropped the uppercase "M" for the layout file? Was I wrong to use upper case M for the name of my Main class (a Java convention, types start with uppercase, objects with lower case)?

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• Java - For a given function foo(X i); in Interface X, why can't implementing class Y change it to fo

  - by incrediman

  For example public interface X{ public void foo(X i); } public class Y implements X{//error: doesn't implement foo(X i)... public void foo(Y i){ fooBar(foo); } .... } Why can't I do that?

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• Why doesn't nHibernate support LIMIT when doing "join fetch"?

  - by HeavyWave

  In nHibernate, if you do an HQL query with "join fetch" to eagerly load a child collection, nHibernate will ignore SetMaxResults and SetFirstResult and try to retrieve every single item from the database. Why? This behavior is specific to HQL, as ICriteria supports eager loading (with an outer join, though) and LIMIT. There are more details here http://www.lesnikowski.com/blog/index.php/nhibernate-ignores-setmaxresults-in-sql/ .

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• Google Maps: marker icons are multi over same location, why?

  - by JakiT

  I'm using Google Maps and have the map set to height/width=100%. I noticed that when I resize the browser window, my map marker icons appear to redraw on top of the same location. Meaning, if I should only have 1 map marker icon on "987 Main St", when I resize the browser window - multiple map marker icons are being now draw on top of "987 Main St" that shouldn't be there. Any ideas why this is happening and how to prevent it? UPDATE: Link to actual code

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• why jquery's ui.css files's font-sizes are bigger than normal?

  - by mehmet6parmak

  Hi all, Im looking at jqueries tabs, datepicker etc and see that font-sizes of the classes added to elements are like 1.1em, 1em which seems big in the page. Why did they do this like that? What is the purpose? http://jquery-ui.googlecode.com/svn/tags/latest/themes/base/jquery.ui.theme.css

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• phusion passenger on ubuntu 10.04: why apache2-prefork-dev when we want apache2-mpm-worker?

  - by z3cko

  i want to install phusion passenger together with ruby enterprise edition on x86_64 SMP ubuntu 10.04. the recommended option seems to be apache2-mpm-worker but when i run passenger-install-apache2-module the installation routine of phusion passenger complains To install Apache 2 development headers: Please run apt-get install apache2-prefork-dev as root. why do we need prefork-dev here, if we clearly want to run passenger with mpm-worker apache2? any suggestions? is there a worker-dev package?

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• Why is Perl commonly used for writing CGI scripts?

  - by Michael Vasquez

  I plan to add a better search feature to my site, so I thought that I would write it in C and use the CGI as a means to access it. But it seems that Perl is the most popular language when it comes to CGI-based stuff. Why is that? Wouldn't it be faster programmed in C or machine code? What advantages, if any, are there to writing it in a scripting language? Thanks.

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• Why in C# 3.0, when we overload constructor of a specified class, we should write default construct

  - by odiseh

  Hi Why in C# 3.0, when we overload constructor of a specified class, we should write default constructor in class body? As far as I know, It was no need to do so. class Test { public int ID {get; private set;} public int Name {get; private set;} public Test() { } public Test(int id, int name) { .... } } Thank you

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• Why does converting from a size_t to an unsigned int give me a warning?

  - by Marlon

  I have the code: unsigned int length = strlen(somestring); I'm compiling with the warning level on 4, and it's telling me that "conversion from 'size_t' to 'unsigned int', possible loss of data" when a size_t is a typedef for an unsigned int. Why!?

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• Why Crashes when int arr = 1 && arr; but not int arr = 0 && arr;

  - by mahesh

  Hi, I wanted to know why the following code crashes. int main( ) { int arr = 1 && arr; return 0; } BUT not with the below code int main( ) { int arr = 0 && arr; return 0; } Thanks in advance

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• why is apache2/mono/mod_mono/www-data eating up all my CPU?

  - by acidzombie24

  On windows it eats up nothing. On my VM when i visit a page i see this (using the tops cmd) 8155 www-data 20 0 64368 34m 9.8m S 70.6 3.4 0:20.54 mono and it doesnt stop. After i close my page and do nothing for minutes it continues to eat all of my CPU. Doing anything inside the VM lags. Why?

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• Are there reasons why the java/spring/hibernate stack aren't popular in the web 2.0 space?

  - by Blankman

  I am really impressed with the java/spring/hibernate stack, and really want to dive in. Just curious, why are so many people using rails when java/spring/hibernate are tried and true? I guesss its because of the convention over configuration and time to launch? (spring has really gone the annotation route so less xml though). I realize this is subjective, but just looking for some thoughts on this.

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• Why are there so many data centres in Texas?

  - by jklp

  I've been searching for online hosting recently and have noticed a high concentration of hosting providers in Texas. Just wondering why this is? It couldn't be possibly be because of temperature (I don't think Texas is a particularly cool place to be) or maybe power is cheaper in Texas vs the rest of the States? Or maybe it's just there are laws in place which give hosting providers tax breaks? Would be very interested to find out.

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• why my code error,about serve the static file using django..

  - by zjm1126

  my settings.py: DIRNAME = os.path.dirname(__file__) STATIC_DOC_ROOT = os.path.join(DIRNAME, 'media') MEDIA_URL = '/media/' my urls.py: def google(request): return render_to_response('a.html',context_instance=RequestContext(request)) urlpatterns = patterns('', (r'^$',google), (r'^media/(?P<path>.*)$', 'django.views.static.serve',{'document_root':settings.STATIC_DOC_ROOT,'show_indexes': True}), ) and my a.html is: <script type="text/javascript" src="/media/jquery-1.4.2.js"></script> <script type="text/javascript"> alert($) </script> but,it can't defiend the '$' why ? thanks

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• Why did Matz choose to make Strings mutable by default in Ruby?

  - by Seth Tisue

  It's the reverse of this question: http://stackoverflow.com/questions/93091/why-cant-strings-be-mutable-in-java-and-net Was this choice made in Ruby only because operations (appends and such) are efficient on mutable strings, or was there some other reason? (If it's only efficiency, that would seem peculiar, since the design of Ruby seems otherwise to not put a high premium on faciliating efficient implementation.)

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• Why cant partial methods be public if the implementation is in the same assembly?

  - by Simon

  According to this http://msdn.microsoft.com/en-us/library/wa80x488.aspx "Partial methods are implicitly private" So you can have this // Definition in file1.cs partial void Method1(); // Implementation in file2.cs partial void Method1() { // method body } But you cant have this // Definition in file1.cs public partial void Method1(); // Implementation in file2.cs public partial void Method1() { // method body } But why is this? Is there some reason the compiler cant handle public partial methods?

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• Why does JQuery keydown work for window but not textbox?

  - by Edward Tanguay

  Why does this work: $(window).keydown(function(event){ alert(event.keyCode); }); but not this: $('#ajaxSearchText').keydown(function(event){ alert(event.keyCode); }); I'm testing with Firefox 3. Interestingly, neither of them work in IE7.

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