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• Sql server indexed view

  - by Jose

  OK, I'm confused about sql server indexed views(using 2008) I've got an indexed view called AssignmentDetail when I look at the execution plan for select * from AssignmentDetail it shows the execution plan of all the underlying indexes of all the other tables that the indexed view is supposed to abstract away. I would think that the execution plan woul simply be an clustered index scan of PK_AssignmentDetail(the name of the clustered index for my view) but it doesn't. There seems to be no performance gain with this indexed view what am I supposed to do? Should I also create a non-clustered index with all of the columns so that it doesn't have to hit all the other indexes? Any insight would be greatly appreciated

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• Need some tips on my SQL script?

  - by Nano HE

  Hi I plan to create a tale to store the race result like this, Place RaceNumber Gender Name Result 12 0112 Male Mike Lee 1:32:40 16 0117 Female Rose Marry 2:20:40 I confused at the items type definiation. Q1.I am not sure the result can be set to varchar(32) or other type? Q2. and for racenumber, between int(11) and varchar(11), which one is better? Q3. Can I use `UNIQUE KEY` like my way? Q4. Do I need split name to firstName and lastName in my DB table? DROP TABLE IF EXISTS `race_result`; CREATE TABLE IF NOT EXISTS `race_result` ( `id` int(11) NOT NULL auto_increment, `racenumber` int(11) NOT NULL, `gender` enum('male','female') NOT NULL, `name` varchar(16) NOT NULL, `result` varchar(32) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `racenumber` (`racenumber`,`id`) ) ENGINE=MyISAM AUTO_INCREMENT=3 DEFAULT CHARSET=utf8 AUTO_INCREMENT=3;

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• Is Stopwatch really broken?

  - by Jakub Šturc

  At MSDN page for Stopwatch class I discovered link to interesting article which makes following statement about Stopwatch: However there are some serious issues: This can be unreliable on a PC with multiple processors. Due to a bug in the BIOS, Start() and Stop() must be executed on the same processor to get a correct result. This is unreliable on processors that do not have a constant clock speed (most processors can reduce the clock speed to conserve energy). This is explained in detail here. I am little confused. I've seen tons of examples of using Stopwatch and nobody mention this drawbacks. How serious is this? Should I avoid using Stopwatch?

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• Are rems replacing ems in CSS?

  - by Kevin

  I was reading about rem units in CSS3, and was a little confused. If you use rem, do you still use em or does that replace it? For example: .selector { margin-bottom:24px; margin-bottom:2.4rem; font-size:16px; font-size:1.6rem; } or .selector { margin-bottom:24px; margin-bottom:2.4em; margin-bottom:2.4rem; } Just trying to figure out if rem takes the place of em, or if it's just another unit.

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• Should I distinguish OpenIDs based on protocol prefix or not? http vs https

  - by Joannes Vermorel

  I have implemented a straightforward OpenID support for my ASP.NET app with DotNetOpenAuth. Yet I recently realized that the implementation was treating http://johndoe.example.com/ as a distinct user compared to https://johndoe.example.com. This lead to quite a few confused users. I am unsure what to do at this point. Is this a bug or a feature? Indeed, I can consider this behavior as a feature: if the user specifies the HTTPS, the user might not want the system to accept HTTP auth in the first place. On the other hand: if the user specifies HTTPS out of sheer cluelessness (the casual web visitor is clueless concerning the purpose of the "S" part), then rejecting it's authentication attempt is confusing. What is considered as the best practice?

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• C# xml serializer - Unable to generate a temporary class

  - by gosom

  I am trying to serialize an xml to a class with the following way: XmlSerializer ser = new XmlSerializer(typeof(PSW5ns.PSW5)); StringReader stringReader; stringReader = new StringReader(response_xml); XmlTextReader xmlReader; xmlReader = new XmlTextReader(stringReader); PSW5ns.PSW5 obj; obj = (PSW5ns.PSW5)ser.Deserialize(xmlReader); xmlReader.Close(); stringReader.Close(); the class PSW5 is generated automatically by xsd.exe using an PSW5.xsd file given to me. I have done the same for other classes and it works. Now i get the following error (during runtime) : {"Unable to generate a temporary class (result=1).\r\nerror CS0030: Cannot convert type 'PSW5ns.TAX_INF[]' to 'PSW5ns.TAX_INF'\r\nerror CS0029: Cannot implicitly convert type 'PSW5ns.TAX_INF' to 'PSW5ns.TAX_INF[]'\r\n"} I am confused because it works for other classes the same way. I would appreciate any suggestions. Thanks inadvance, Giorgos

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• review on django book vs django tutorial

  - by momo

  going through both the django book and tutorial, am a bit confused to the differences in approach (aren't they both written by the same people?) can anyone who has experience in both give a short review on them? i have decent python skills (largely untested though), but no experience at all in web apps and am trying to decide which one to stick to. i briefly looked in to practical django projects but that was a bit too complicated for me, my background is primarily bash scripting, the python i know i learned from an instant hacking tutorial and diving into python.

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• Unit testing "hybrid" WPF/Silverlight controls

  - by Alan Mendelevich

  I'm starting a new WPF/Silverlight custom control project and wanted to do unit testing on this one. However I'm a little confused about how to approach this. This control would be based on the same codebase for both WPF and Silverlight with minor forking using #ifs and partial classes to tame the differences. I guess I could write unit tests for WPF part with NUnit, MSTest, xUnit, etc. and for the Silverlight part with Silverlight Unit Test Framework but this doesn't sound very elegant to me. I'd have to either ignore testing identical code on one of the platforms and test only differing parts (which is not very trustworthy) or rewrite tests for 2 frameworks (which is annoying). Is this the right way to go? I'm wondering if there's some guidance, articles, tutorials out there on how to approach this task. Any pointers?

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• xml with special character, encoding utf-8

  - by Sergio Morieca

  I have a few simple questions, because I got confused reading all difference responses. 1) If I have an xml with prolog: and I'm going to unmarshall it with Java (for example: JaXB). I suppose, that I can't put CROSS OF LORRAINE (http://www.fileformat.info/info/unicode/char/2628/index.htm) inside, but I can put "\u2628", correct? 2) I've also heard that UTF-8 doesn't contain it, but anything in Unicode can be saved with encoding UTF-8 (or UTF-16), and here is an example from this page: UTF-8 (hex) 0xE2 0x98 0xA8 (e298a8) Is my reasoning correct? Can I use this form and put it in the xml with utf-8 encoding?

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• org.apache.http.impl.cookie.BasicClientCookie not serializable???

  - by Misha Koshelev

  Dear All: I am quite confused... I am reading here and BasicClientCookie clearly implements Serializable per JavaDoc: http://hc.apache.org/httpcomponents-client/httpclient/apidocs/org/apache/http/impl/cookie/BasicClientCookie.html However, my simple Groovy script: #!/usr/bin/env groovy @Grapes( @Grab(group='org.apache.httpcomponents', module='httpclient', version='4.0.1') ) import org.apache.http.impl.cookie.BasicClientCookie import java.io.File def cookie=new BasicClientCookie("name","value") println cookie instanceof Serializable def f=new File("/tmp/test") f.withObjectOutputStream() { oos-> oos.writeObject(cookie) } outputs: false Caught: java.io.NotSerializableException: org.apache.http.impl.cookie.BasicClientCookie at t$_run_closure1.doCall(t.groovy:12) at t.run(t.groovy:11) I have checked and I have no other versions of HttpClient anywhere in classpath (if I take Grapes statement out it cannot find file). Thank you! Misha Koshelev

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• Best Approach to process images in Django

  - by primalpop

  I've have an application with Android front end and Django as the back end. As part of the answers here, I'm confused over the approach which I should take to send images to Django Server. I've 2 options at my disposal as Piro pointed out there. 1) Sending images as Multi Part entity 2) Send image as a String after encoding it using Base 64. So I am considering the approach that would make it easy to be processed by Django. The images are small in size (<200kb) and number (<10). Any suggestions or pointers are most welcome.

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• VS 2010 Layer Diagram Validation Error is Showing A Dependency That Doesn't Even Exist (AV0001)

  - by Dan

  I'm getting the following validation error on my layer diagram Error 65 AV0001 : Invalid Dependency : Weld.Interface.Core(Assembly) -- Weld.Interface(Namespace) Layers: Application Framework Core, Application Framework | Dependencies: Namespace Reference D:\Projects\Windows Projects\Weld\Weld\ModelingProject1\Weld.layerdiagram 0 0 ModelingProject1 Weld.Interface.Core: This assembly and namespace does not have a reference to Weld.Interface and only references .NET Framework classes Weld.Interface: This assembly and namespace does not have a reference to Weld.Interface There is no dependancy between these two layers in the dependency diagram. I am confused why I am getting this error. No dependency in the project or code, and no dependency is even setup in the layer diagram. Somehow the Validation logic in the layer diagram is seeing a non existant dependency and saying it is an error. Any ideas what either I might have missed or what is causing this problem?

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• Why would I do an inner join on a non-distinct field?

  - by froadie

  I just came across a query that does an inner join on a non-distinct field. I've never seen this before and I'm a little confused about this usage. Something like: SELECT distinct all, my, stuff FROM myTable INNER JOIN myOtherTable ON myTable.nonDistinctField = myOtherTable.nonDistinctField (WHERE some filters here...) I'm not quite sure what my question is or how to phrase it, or why exactly this confuses me, but I was wondering if anyone could explain why someone would need to do an inner join on a non-distinct field and then select only distinct values...? Is there ever a legitimate use of an inner join on a non-distinct field? What would be the purpose? And if there's is a legitimate reason for such a query, can you give examples of where it would be used?

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• Silverlight 5 App Crashing

  - by bbagfh

  I have a silverlight 5 app that makes some WCF requests. When the silverlight app is hosted locally on an IIS 7.5 server it works fine, but when I run it from a remote IIS6 box there are issues. The app loads fine and presents the login UI. After trying to log in, a couple WCF service calls are made (successfully), but the response causes silverlight to stop responding and the browser eventually asks to kill the non-responsive silverlight app. I am mostly confused because it works fine in IIS 7.5 Note that I am accessing the same WCF services hosted on a remote box in both instances, and both times I am getting successful responses. It is only in IIS6 that the app becomes non-responsive.

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• JAX-WS returning a complex object?

  - by occhiso

  Hi, Im pretty new to Java Web Services, but I cant find a good explanation anywhere. I have 2 Java web projects within NetBeans. One as a web service and one as a client for that web service. I have also created my own class called "Person", which has what you'd expect: name, dob, etc. I would like to have a web service method called "ListPeople()" that would return an array of "Person" objects. Do I need to have that class in both projects? Should I be serializing the object first? Should I be using JAXB, if so, where do I start? Sorry for the n00b questions, but im confused. What is the normal way of accomplishing this? Thanks in advance

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• What is the difference between these two different lines of Objective-C, and why does one work and n

  - by jrtc27

  If I try and release tempSeedsArray after seedsArray = tempSeedsArray , I get an EXEC_BAD_ACCESS, and Instruments shows that tempSeedsArray has been released twice. Here is my viewWillAppear method: - (void)viewWillAppear:(BOOL)animated { NSString *arrayFilePath = [[NSBundle mainBundle] pathForResource:@"SeedsArray" ofType:@"plist"]; NSLog(@"HIT!"); NSMutableArray *tempSeedsArray = [[NSMutableArray alloc] initWithContentsOfFile:arrayFilePath]; seedsArray = tempSeedsArray; NSLog(@"%u", [seedsArray retainCount]); [seedsArray sortUsingSelector:@selector(localizedCaseInsensitiveCompare:)]; [super viewWillAppear:animated]; } seedsArray is an NSMutableArray set as a nonatomic and a retain property, and is synthesised. However, if I change seedsArray = tempSeedsArray to self.seedsArray = tempSeedsArray (or [self seedsArray] = tempSeedsArray etc.), I can release tempSeedsArray. Could someone please explain simply to me why this is, as I am very confused! Thanks

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• need help with installing shared libraries on linux

  - by naiquevin

  Hi, I am new to linux and trying to get the Ajax Push engine server to work on Ubuntu 9.04. I installed the server from source it fails the check that it does by using its own javascript framework. The problem is that it fails to load the modules and the output that i get in the terminal when i start it is. [Module] Failed to load ../modules/lib/libmod_spidermonkey.so [Invalid library] (libmysac.so.0.0: cannot open shared object file: No such file or directory) i thought i had to install mysac lib as a shared lib, so after some searching i copied the libmysac.so to /usr/local/lib/ and upon running ldconfig there it created the symlink. But still it gived the same error. Now I copied the libmod_spidermonkey.so in the shared lib dir. But this time ldconfig did not create any symlinks. I am really confused and looking for some pointers . Please help

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• UITableViewController's TableView becomes NULL

  - by Travis

  I have UITableViewController (initiated by the Navigation-based app project template). I am overriding loadView and putting up an alternative view (w/ a UILabel and UIActivityIndicator) to display while the table's contents is loading. When the loading is done, I remove the loading view and try to display the table view but I see that it's NULL. So in the simulator I see my loading view and then when the loading's done the view disappears but my tableview never comes. I'm confused what the difference is between self.view and self.tableView in my UITableViewController and how I can exchagn

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• problem in basic implementation of MVVM pattern - Services

  - by netmajor

  I watch some video and read articles about MVVM pattern and start thinking how should I implement it in my Silverlight app. So at first I create Silverlight application. I think that for clear view I create 3 folders: View - for each user control page in my app, ViewModel - for c# class which will querying date and Model- Entity Data Model of my SQL Server or Oracle Database. And now I am confused, cause I want to implement *WCF/RIA Services/Web services* in my project. In which folder should I put in class of services? I see in examples that Services take date and filtering it and then output data was binding in View - so It looks as ViewModel. But I was sure that someone use Services in Model and that I want to do. But how? Can someone explain me implementing Services as Model? Is my point of view at MVVM is correctly?

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• xcode syntax color coding explained?

  - by Max Fraser

  Can anyone give me a quick rundown of the color syntax meanings in xcode? I am running into some problems and understanding the color coding I am sure will help me out. Currently I have some variables that are light blue and I think they need to be black but I am not sure of the difference? masterViewController=[[UINavigationController alloc] initWithDestination: destination]; I believe my masterViewController here should be colored black and not the light blue it is currently colored - I am assuming I defined or initialized something wrong somewhere. First day in xCode so I am pretty damn confused!

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• Dynamic Selectors with Jquery with php while loop

  - by Anders Kitson

  I have a while loop which creates a list of anchor tags each with a unique class name counting from 1 to however many items there are. I would like to change a css attriubute on a specific anchor tag and class when it is clicked so lets say the background color is changed. Here is my code while($row = mysql_fetch_array($results)){ $title = $row['title']; $i++; echo "<a class='$i'>$title</a> } I would like my jquery to look something like this, it is obviously going to be more complicated than this I am just confused as where to start. $(document).ready(function() { $('a .1 .2 .3 .4 and so on').click(function() { $('a ./*whichever class was clicked*/').css('background':'red'); }); });

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• When using the getInstance() method of the abstract java.text.NumberFormat class, what is the actual

  - by iamchuckb

  This question expands upon the one at abstract-class-numberformat-very-confused-about-getinstance. I feel that this question is different enough to merit being asked on its own. In the answers to that question, it was stated that a code statement such as NumberFormat en = NumberFormat.getInstance(Locale.US); returns an object that is a subclass of the java.text.NumberFormat class. It makes sense to me why the return type can't be just an instance of NumberFormat since that is an abstract class. Rather, it was stated that the returned object is at least an instance of NumberFormat, but actually something else. My question is this: what specifically is the class of the object that is returned? In the Sun documentation the only subclasses I see are ChoicesFormat and DecimalFormat. Is there some sort of behind the scenes compiler voodoo going on here? Thanks in advance!

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• Browser caching issue on a https site pressing f5

  - by sushil bharwani

  i am working on a website where i have content entry form. This form contains a tiny mce control. The control is composed of some 40-50 files. The testing reported that the entry form loads slow and evertime shows up 50 files loading to completely load the page. Is there a way i can decrease this time. I have taken help of browser caching by setting the expires header of static content to very far date. When i access the form through its link second or later times it loads fast without saying 40 files remaining. but when i do f5 it reloads the entire page. I m confused as to how is f5 different from clicking on the link. Just to add my url is https.Any suggestion to increase the performance of this form will be great.

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• ASP.NET Web User Control with Javascript used multiple times on a page - How to make javascript func

  - by Jason Summers

  I think I summed up the question in the title. Here is some further elaboration... I have a web user control that is used in multiple places, sometimes more than once on a given page. The web user control has a specific set of JavaScript functions (mostly jQuery code) that are containted within *.js files and automatically inserted into page headers. However, when I want to use the control more than once on a page, the *.js files are included 'n' number of times and, rightly so, the browser gets confused as to which control it's meant to be executing which function on. What do I need to do in order to resolve this problem? I've been staring at this all day and I'm at a loss. All comments greatly appreciated. Jason

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• A web framework where AJAX was not an after thought

  - by Pirate for Profit

  AJAX is a pain in the ass because it essentially means you'll have to write two sets of similarish code: one for browsers with JavaScript enabled and those without. Not only this, but you have to connect JavaScript events to hook into your models and display the results. And if all that weren't bad enough, you need to send an address change with the request, otherwise the user won't be able to "click back" correctly (if confused look at what happens to the address bar when you click links in GMail). We're searching for something that had the foresight and design goals with all these concerns in mind. Performance and security are also obvious major concerns. We love config-based systems as well, where you don't have to write a lot of code you just drop it into an easily read config format. It's like asking for the holy grail right?

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