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Articles indexed in May 2010

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  • Practise Questions for Templates,Functors,CallBack functions in c++?

    - by Eternal Learner
    Hi, I have been reading templates,functors,callback function for the past week and have referred some good books and articles. I however feel that, unless I can get good practice - programming in templates and use functors-callbacks there is no way I can really understand all the concepts or fluently use them while coding. Could anyone suggest some articles or books or websites where , there is a definition of the problem and also a solution to the same. I could just write code for the problem and check later on if my solution is good enough.. I am also aware that some of our stack-overflow members are experts in templates and callback functions. It would be great if they could design a problem and also post a solution , where a lot of template beginners like me could benefit.

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  • JW Player playlist only loads randomly in IE, works fine in FF every time

    - by meow
    The playlist loads every time in FF but only the first time in IE (6-8), after that only randomly. If I alert the error that's thrown I get "TypeError: playerReady is undefined". My code looks good and obviously works since FF displays the playlist perfectly. I've got no idea how to solve this. Anyone? <script type='text/javascript'> var so = new SWFObject('/UI/Flash/player.swf', 'ply', '<%=FlashWidth %>', '<%=FlashHeight %>', '9', '#ffffff'), playlistURL = '<%=PlaylistURL %>', imageURL = '<%=GetBackgroundImageUrl() %>'; so.addParam('allowfullscreen', 'true'); so.addParam('allowscriptaccess', 'always'); if (playlistURL !== '') { so.addVariable('playlistfile', playlistURL); so.addVariable('playlist', 'none'); so.addVariable('enablejs', 'true'); } else { so.addVariable('file', '<%=FlashURL %>'); } if (imageURL.length > 0) { so.addVariable('image', imageURL); } so.write('preview<%=PlayerID %>'); </script>

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  • Can a DevExpress XtraGrid be filled using a a Dynamic SELECT statement string

    - by Gerhard Weiss
    Can a DevExpress XtraGrid be filled using a a Dynamic SELECT statement string? i.e. SELECT * FROM Employee or SELECT * FROM Dependents To fill our XtraGrids currently, we use a ORM that creates entities. To do this it takes a lot of steps and time. What is driving me to ask this question is we do a lot of client aquistions where we get hundreds of files. I do not want to create entities for all of these then have to create an XtraGrid for each entity. Ideally if I can just feed it a SELECT statement and the XtraGrid could render it then I could use the XtraGrid very nice data minipulation features (Filter, Group By, etc). If you have any other ideas or suggestions please to not hesitate to post them.

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  • In ASP.NET MVC, How do I make a partial view available to all controllers?

    - by Quakkels
    In ASP.NET MVC, How do I make a partial view available to all controllers? I want to create navigation that is common across the entire site, but when I place the Html.Action into my master page, it only works on views associated with 1 controller. Right now, I have a controller action defined like this: // GET: GetCategoriesPartial [ChildActionOnly] public ActionResult GetCategoriesPartial() { var category = CategoriesDataContext.GetCategories(); return PartialView(category); } And I've created my partial view like this: <%@ Import Namespace="wopr.Models" %> <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl" %> <ul> <% foreach (var cat in Model as IEnumerable<Category>) { %> <li><a href="/categories/Details/<%=cat.catID%>"><%=cat.catName%></a></li> <% } %> </ul> My Master Page looks like this: <%@ Import Namespace="wopr.Models" %> <%@ Master Language="C#" Inherits="System.Web.Mvc.ViewMasterPage" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title><asp:ContentPlaceHolder ID="TitleContent" runat="server" /></title> <link type="text/css" rel="Stylesheet" href="/Content/Site.css" /> </head> <body> <div class="wrap-all"> <div style="text-align:right;"> <a href="/">Home</a> | <a href="/games/">Games</a> | <a href="/games/Index2/1">Games <em>(paginated)</em></a> | <a href="/categories/">Categories</a> | <a href="/upload/">Upload</a> </div> <asp:ContentPlaceHolder ID="MainContent" runat="server"> </asp:ContentPlaceHolder> <!--This errors on any non-CategoryController page.--> <%= Html.Action("GetCategoriesPartial")%> <!----> </div> </body> </html> This code works as long as I'm viewing something handled by the CategoriesController. If I go to any view handled by a different controller, I get the exception: System.Web.HttpException: A public action method 'GetCategoriesPartial' was not found on controller 'wopr.Controllers.GamesController'. How do I make this partial view available to all the site's controllers? Thanks for any help. Quakkels

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  • Maximizing the number of threads to fully utilize all available resources without hindering overall

    - by Matt
    Let's say I have to generate a bunch of result files, and I want to make it as fast as possible. Each result file is generated independently of any other result file; in fact, one could say that each result file is agnostic to every other result file. The resources used to generate each result file is also unique to each. How can I dynamically decide the optimal number of threads to run simultaneously in order to minimize the overall run time? Is my only option to write my own thread manager that watches performance counters and adjust accordingly or does there exists some solid classes that already accomplish this?

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  • In ActionScript, is there a way to test for existence of variable with datatype "Function"

    - by Robusto
    So I have a class where I instantiate a variable callback like so: public var callback:Function; So far so good. Now, I want to add an event listener to this class and test for existence of the callback. I'm doing like so: this.addEventListener(MouseEvent.MOUSE_OVER, function(event:MouseEvent) : void { if (callback) { // do some things } }); This works great, doesn't throw any errors, but everywhere I test for callback I get the following warning: 3553: Function value used where type Boolean was expected. Possibly the parentheses () are missing after this function reference. That bugged me, so I tried to get rid of the warning by testing for null and undefined. Those caused errors. I can't instantiate a Function as null, either. I know, I know, real programmers only care about errors, not warnings. I will survive if this situation is not resolved. But it bothers me! :) Am I just being neurotic, or is there actually some way to test whether a real Function has been created without the IDE bitching about it?

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  • AD-DirectoryServices: .NET2.0 - Speaking architecture, approach and best practices... Suggestions?

    - by Will Marcouiller
    I've been mandated to write an application to migrate the Active Directory access models to another environment. Here's the context: I'm stuck with VB.NET 2005 and .NET Framework 2.0; The application must use the Windows authenticated user to manage AD; The objects I have to handle are Groups, Users and OrganizationalUnits; I intend to use the Façade design pattern to provider ease of use and a fully reusable code; I plan to write a factory for each of the objects managed (group, ou, user); The use of Attributes should be useful here, I guess; As everything is about the DirectoryEntry class when accessing the AD, it seems a good candidate for generic types. Obligatory features: User creates new OUs manually; User creates new group manually; User creates new user (these users are services accounts) manually; Application reads an XML file which contains the OUs, groups and users to create; Application informs the user about the OUs, groups and users that shall be created; User specifies the domain environment where to migrate the XML input file designated objects; User makes changes if needed, and launches the task operations; Application performs required by the XML input file operations against the underlying AD as specified by the user; Application informs the user upon completion. Linear features: User fetches OUs, groups, users; User changes OUs, groups, users; User deletes OUs, groups, users; The application logs AD entries and operations performed, plus errors and exceptions; Nice-to-have features: Application rollbacks operations on error or exception. I've been working for weeks now to get acquainted with the AD and the System.DirectoryServices assembly. But I don't seem to find a way to be fully satisfied with what I'm doing and always looking for better. I have studied Bret de Smet's Linq to AD on CodePlex, but then again, I can't use it as I'm stuck with .NET 2.0, so no Linq! But I've learned about Attributes, and seen that he's working with generic types as he codes a DirectorySource class to perform the operations for OUs, groups and users. I have been able to add groups to the AD; I have been able to add users to the AD; The created user is automatically disabled? I seem to get confused with the use of a LDAP path to add objects. For instance, one needs two instances of a System.DirectoryServices.DirectoryEntry class to add a group, for instance. Why this? Any suggestions? Thanks for any help, code sample, ideas, architural solution, everything!

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  • Rails redirect_to jQTouch site does not work as expected

    - by tilthouse
    I have a Rails app with a jQTouch mobile site that is displayed if the user goes to m.blah.com. First, I detect the browser, then to a redirect_to m.blah.com if it's an iphone, etc. All well and good. When I use desktop Safari, this all works exactly right. However, when I use an actual iPhone or the Apple iPhone Simulator, it does not. The mobile site appears to load without the browser actually doing the redirect. The URL in the browser is still www. I am wondering if this behavior is due to Mobile Safari, or if it is somehow jQTouch trying to load the page with AJAX, not a reload (which is odd as jQTouch hasn't been loaded at all before the redirect). Any ideas?

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  • Tools for website/web application load testing?

    - by zarko.susnjar
    Before going into production, our client demands actual numbers of how many users our web application can handle. We have all kinds of features implemented including asset management (file uploads/downloads), documents import/export, various statistics, web-services etc. Which tool (or set of tools) could do this? Application details: XHTML/jQuery Coldfusion 8 SQL Server 2008 Windows Server 2008

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  • MS SQL Index Scripting

    - by Fouad Masoud
    I'm using MS SQL 2008. Is it possible to create a script to loop over all tables in a database generating a set of index drop scripts and create scripts separately? What I have to do is drop all indexes on a set of databases to run a heavy data load process but then I want to re-enable all the indexes. I don't want to have to go through each table and script an index drop and then index create. Thanks!

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  • Unit testing installation of services

    - by skiphoppy
    Our installer program is going to be installing a number of system services, under both Windows and UNIX, using JavaServiceWrapper. There will be a class responsible for creating JavaServiceWrapper config files, installing the services, etc. Can I have some suggestions on how to unit-test this class?

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  • Hoard allocator not "working"?

    - by Cowboy
    I'm trying to Hoard allocator to work, but it seems it doesn't. I have a benchmark application that does a lot of dynamic memory management. The execution time for Hoard and glibc memory manager is the same. It makes me wonder if I'm doing the right thing. What I do is... export LD_PRELOAD="/path/libhoard.so" g++ main.cpp -O3 -o bm -lpthread -lrt Shouldn't I have to link to Hoard allocator? Does it matter what path (in LD_PRELOAD) is, or can I have whatever path? I'm running Ubuntu 8.04, and g++ 4.2.4 Cheers

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  • What can cause a double page request?

    - by johnnietheblack
    I am currently investigating a double request problem on my site. Not all the time, but sometimes, a requested page will in fact load twice...which is not a problem really until it is on a page with PHP that inserts stuff into my db on request (my tracking script). I have read that an empty src in an image tag, and an empty url() in a css background could potentially cause the page to be requested twice. However, I can't find any problems with those. Is there anything else that could be causing something like this?

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  • mysql table creation problem..

    - by pradeep
    Hi, I have a small problem. I am creating an appointment table where in the foreign key is patient id which is referenced from patient table.This table is for all registered patients. there will be unregistered patients also, who will be seeking appointments.SO i just need to store the name,phone and few details. I don't want to make these 2 as different tables. So is there a way to skip the integrity check of foreign key when i ma inserting unregistered patient data

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  • convert string to double

    - by James123
    I have string value in that I need to convert to double in VB.Net. Conditions are like below string = "12345.00232232" if condition is 3 (2 digits after decimal and comma) display = 12,345.00 if condition is 5 (5 digits after decimal and comma) display = 12,345.00232 If Condition is 7 ( 5 digits after decimal and no comma) display = 12345.00232 How can I do that in VB.Net?

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  • Hibernate Envers : How to delete entries from my audit table?

    - by Laurent T
    Hi everyone, I am currently working with Hibernate Envers. My problem is the following : How to delete entries in the audit table related to the entity I want to delete? My entity has no relation with other entities. I figured out that I have to do that in onPostDelete method of my custom listener : import org.hibernate.envers.event.AuditEventListener; import org.hibernate.event.PostCollectionRecreateEvent; import org.hibernate.event.PostDeleteEvent; import org.hibernate.event.PostInsertEvent; import org.hibernate.event.PostUpdateEvent; import org.hibernate.event.PreCollectionRemoveEvent; import org.hibernate.event.PreCollectionUpdateEvent; public class MyListener extends AuditEventListener { ... @Override public void onPostDelete(PostDeleteEvent arg0) { // TODO Auto-generated method stub super.onPostDelete(arg0); } ... } I've read the documentation, forums, many things but I can't figure it out. May be it's not possible, I don't know. Has someone ever done this before? Thank you :)

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  • SQL returns non-array value in PHP

    - by DeadMG
    $request = 'SELECT * FROM flight WHERE Id = \''.$_SESSION['LFLightRadio'].'\''; $data = mysql_fetch_array(mysql_query($request, $SQL)); echo '<table class="table">'; foreach($data as $key => $value) { echo '<th class="head" align="center" height="19">'.$key.'</th>'; } echo '<tr>'; foreach($data as $key => $value) { echo '<td class="cell" align="center" height="19">'.$value.'</td>'; } echo '</tr></table>'; I know that the LFlightRadio value is set, and is a value returned by the Id value of a previously returned row from the flight database. So within "flight", a record definitely exists with this Id. But, this still gives me a non-array result, so that when I try to use foreach on it, it errors out. Suggestions?

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  • Ryzom becomes Free Software

    <b>Ryzom:</b> "I write to you today to share an exciting news - almost four years after the initial Ryzom.org initiative, Ryzom has just been released as Free Software by Winch Gate."

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  • Why are Microsoft Windows Update taking so long to install?

    - by Mathieu Pagé
    Hi, I have a question that is not related to a problem I have. Just something I'd like to understand. Why are Windows update so long? First Windows Update need to find witch updates you needs and this take about 5 minutes. What is happening behind the scene during those 5 minutes? I would have tought that it would be enough to compare the updates you already have to the complete list of updates or to check the version numbers of a couples files. Then when it comes time to install the upgrades, they're also taking a long time. Some 1 Mb updates takes 2, 3 or 5 minutes to install. What is taking so long. I would have though that it was simply a mater of backup the old file, uncompress the new files, replace the old file. This should be really fast. Is Windows doing something else? For comparison, under Linux, you can find which updates you need in about 20 seconds and installing them is usually pretty fast (The time to uncompress the files). I can do a complete updgrade of my linux machine in about 25 minutes (download 600-800 Mb of updates, hundreds of them and install them) while under windows 25 minutes is the time it needs to find witch update are needed and install about 5-10 updates. I just updated a Windows XP home from SP1a to SP3 + all other updates. It took me more than 3 hours. Doing something like that in the Linux World takes about 30 minutes. I don't want to bash Microsoft here. I genuinly want to know what they do differently that makes it so long.

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  • IIS7 Rewrite rule being duplicated across 2 different websites (unwanted)

    - by Matt
    We have a IIS7 on Windows Server 2008. It is hosting a handful of sites, on a handful of ip addresses. 2 of those sites are actually wildcards on the domain: *.firstdomain.com *.seconddomain.com However, I am finding that any URL Rewrite rules I add for one of these "websites", is automatically in the URL Rewrite section for the other. Similarly, if I disable the rule in in one, it disables in the other. This doesn't happen with the other sites defined on this server, just these two. I look at the parent (top level, the server as a whole), and the rule is not there. Any idea what's going on here?

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