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• Best server-side javascript servers.

  - by fmsf

  Hey, I've been wondering to try out server-side javascript for a while. And I'm finding a good amount of servers, like: Node.js Rhino SpiderMonkey among others. Could anyone with experience on server-side javascript, tell me which are the best engines? and why? I like the Node.js because it's based on Google's V8 engine. And seems easy to use. But some feedback on what you would choose would be great. Edit: Some benchmarks for Node. I'm thinking on going with this one but feedback is still welcome. Thanks

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• Using LINQ to fetch result from nested SQL queries

  - by Shantanu Gupta

  This is my first question and first day in Linq so bit difficult day for me to understand. I want to fetch some records from database i.e. select * from tblDepartment where department_id in ( select department_id from tblMap where Guest_Id = @GuestId ) I have taken two DataTable. i.e. tblDepartment, tblMap Now I want to fetch this result and want to store it in third DataTable. How can I do this. I have been able to construct this query up till now after googling. var query = from myrow in _dtDepartment.AsEnumerable() where myrow.Field<int>("Department_Id") == _departmentId select myrow; Please provide me some link for learning Linq mainly for DataTables and DataSets. EDIT: I have got a very similar example here but i m still not able to understand how it is working. Please put some torch on it.

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• .NET ThreadPool QueueUserWorkItem Synchronization

  - by ikurtz

  I am employing ThreadPool.QueueUserWorkItem to play some sound files and not hanging up the GUI while doing so. It is working but has an undesirable side effect. While the QueueUserWorkItem CallBack Proc is being executed there is nothing to stop it from starting a new thread. This causes the samples in the threads to overlap. How can I make it so that it waits for the already running thread to finish running and only then run the next request? EDIT: I did: Thread t = new Thread(FireAttackProc(fireResult)); t.Start(); but it gave me some errors. How do I specify a thread method with parameters?

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• Create a custom worksheet function in Excel VBA

  - by Tomalak

  I have a faint memory of being able to use VBA functions to calculate values in Excel, like this (as the cell formula): =MyCustomFunction(A3) Can this be done? EDIT: This is my VBA function signature: Public Function MyCustomFunction(str As String) As String The function sits in the ThisWorkbook module. If I try to use it in the worksheet as shown above, I get the #NAME? error. Solution (Thanks, codeape): The function is not accessible when it is defined ThisWorkbook module. It must be in a "proper" module, one that has been added manually to the workbook.

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• Actionscript 3 and nested lists

  - by Hanpan

  Hi, I have the following code in my XML (EDIT:) which I am trying to show in a RichText using htmlText. <ul> <li>List Item 1 <ul> <li>List Item 2</li> </ul> </li> </ul> Unfortunately, Flash doesn't seem to support nested lists, and I am getting output which looks like this: List item 1 List item 2 Where I want the second ul to be indented further. Any ideas would be much appreciated! Cheers

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• TreeView inside AutoCompleteBox's popup

  - by Satumba

  Hi, Inspired by this post, I'm trying to use a TreeView inside the AutoCompleteBox's popup in order to show hierarchical data. Here's what i did: I Made my own TreeView that implements ISelectionAdapter (not sure it's perfect) Edit AutoCompleteBox template and change the selector to my treeview Try Bind my ViewModel to it Unfortunately this is not working. i checked my new TreeView with the same binding to the same object and it works prefectly when it's outside of a AutoCompleteBox template. Any idea? any special way to implement ISelectionAdapter for treeview? did i missed something? couldn't find any example for it on the web... Thanks.

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• Showing Different fields in EditorForModel vs. DisplayForModel modes in MVC2

  - by CodeGrue

  I have a viewmodel that has an int StateID field and a string StateName field like so: public class DepartmentViewModel : BaseViewModel, IModelWithId { // only show in edit mode public int StateId { get; set; } // only show in display mode public string StateName { get; set; } } I have a read only view that uses DisplayForModel and an update view that uses EditorForModel. I want the DisplayForModel view to show the StateName property, and the EditorForModel view use the StateID property (I am actually rendering a dropdownlist based on this). I have not been able to figure out how to decorate my viewmodel properties to create this behavior.

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• access following entry in a form_for, and switch a value between two entry of my DB

  - by Sylario

  I am displaying a list of articles. I sort my articles by the param order, and i want, when displaying the list of article to be able to "move" them up or down. In php i do everything with a for browsing my array of results and inside the for i go to the next index to find where i am in the list, and with wich other article i must swap my order. I can do that in the script displaying the edit page and then in the script executing the update. In rails i have only my form_for in my erb. How can i : Know if my entry is the last one or the first one(display only V for the first, ^ for the last and V^ for the rest) Update my DB entry by switching the order value between the article that i want to lower, raise, and the one he is taking the place.

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• Add onchange event to a "locked" field in Dynamics CRM 4

  - by Evgeny

  I'm customising Dynamics CRM 4 and would like to modify the Form for the Case entity to add some JavaScript to the onchange event for the Knowledge Base Article lookup field (kbarticleid_ledit). However, when I click Change Properties for that field I get an error message: This field belongs to a locked section and cannot have its properties modified. How can I get around this and edit it? Is there a workaround similar to customizing the Article view? Or can I hack the DB somehow to "unlock" that field?

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• PostGres Error When Using Distinct : postgres ERROR: could not identify an ordering operator for ty

  - by CaffeineIV

  ** EDIT ** Nevermind, just needed to take out the parens... I get this error: ERROR: could not identify an ordering operator for type record when trying to use DISTINCT Here's the query: select DISTINCT(g.fielda, g.fieldb, r.type) from fields g LEFT JOIN types r ON g.id = r.id; And the errors: ERROR: could not identify an ordering operator for type record HINT: Use an explicit ordering operator or modify the query. ********** Error ********** ERROR: could not identify an ordering operator for type record SQL state: 42883 Hint: Use an explicit ordering operator or modify the query.

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• Can you access registers from python functions in vim

  - by Michael Anderson

  It seems vims python sripting is designed to edit buffer and files rather than work nicely with vims registers. You can use some of the vim packages commands to get access to the registers but its not pretty. My solution for creating a vim function using python that uses a register is something like this. function printUnnamedRegister() python >> EOF print vim.eval('@@') EOF Setting registers may also be possible using something like function setUnnamedRegsiter() python >> EOF s = "Some \"crazy\" string\nwith interesting characters" vim.command('let @@="%s"' % myescapefn(s) ) EOF However this feels a bit cumbersome and I'm not sure exactly what myescapefn should be. So I've never been able to get the setting version to work properly. So if there's a way to do something more like function printUnnamedRegister() python >> EOF print vim.getRegister('@') EOF function setUnnamedRegsiter() python >> EOF s = "Some \"crazy\" string\nwith interesting characters" vim.setRegister('@',s) EOF Or even a nice version of myescapefn I could use then that would be very handy.

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• Setting the position within a spinner

  - by eric

  Good Afternoon, I have a spinner array containing 3 spinners. Each spinner is populated via a res string array. Each array contains the numbers 1-100. When the activity starts each spinner contains a string array of 1-100 and when you click on a spinner the first choice is 1. Say a user picks 25 on the first spinner. I'd like the 2nd spinner to show 25 as the starting point for scrolling when the spinner is clicked but not fire the spinner. The 2nd spinner would still contain the array 1-100 though so a user could scroll down to a lessor number if the wanted to. I've tried using setSelection but that causes the 2nd spinner to fire causing undesirable effects (an edit box is populated with the 2nd number even though the user hasn't clicked the 2nd spinner). I would like the 2nd spinner to just show 25 as the starting point. How do I do this?

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• Why is my CalendarExtender getting overlapped when rendered?

  - by Dillie-O

  I'm working on a .NET web application and I'm using a CalendarExtender control within it to have the user specify a date. For some reason, when I click the icon to display the calendar, the background seems to be transparent, shown below: I'm using the extender on other pages and do not run into this issue. I'm not sure if it is worth mentioning, but the calendar is nested within a panel that has a rounded corner extender attached to it, as well as the panel below it (where the "From" is overlapping). Within that panel, I do have a div layout setup to create two columns. EDIT: The other thing to note here is that the section that has the name and "placeholders" for nickname are all ASP.NET label controls, if that matters.

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• eclipse debugger: attaching source-code of maven managed libraries

  - by meriton

  I'd like to use the source code of maven-managed dependencies when debugging our webapp in eclipse. I have managed to attach the sources to the libraries in the "Maven Managed Depedencies" classpath container, i.e. when I open a class file from a depedency (e.g. using Ctrl-Shift-T), I see the source code. However, when I launch the tomcat within eclipse, and execution halts on a breakpoint in that same class, the editor pane only displays the text "source not found", and a button to edit the "source lookup path". I have attempted to manually add the "Maven Managed Dependencies" classpath container, only to be told "Use maven project settings to configure depedency resolution". However, I see no useful setting in that property pane ... How can I attach those sources?

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• Best Practices for Source Control Dependencies

  - by VirtuosiMedia

  How do you handle source control setup of a project that has dependency on a separate framework or library? For example, Project A uses Framework B. Should Project A also include the code from Framework B in its repository? Is there a way for it to be included automatically from a different repository or would I have to updated it manually? What are the general approaches are usually taken for this scenario? Assume that I control the repositories for both Project A and Framework B and that the source code for both is not compiled. Any resources or suggestions would be greatly appreciated. I'm currently using Subversion (on a very basic level), but I would like to switch to Mercurial so that I can try out Kiln with Fogbugz. Edit: In Mercurial, would you use parent repositories for this function?

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• Configure IIS 7.0 to enable webservices in classic mode

  - by intermension

  What are the configuration file settings to enable webservices on IIS 7.0 in classic mode? The site has to be in a classic mode application pool because the Report Viewer controls crash when running in Integrated Mode. However in a classic mode application pool, webservices produce the following error message: The requested content appears to be script and will not be served by the static file handler. •If you want to serve this content as a static file, add an explicit MIME map EDIT - Additional Error Message Info: HTTP Error 404.17 - Not Found Module: StaticFileModule Notification: ExecuteRequestHandler Handler: StaticFile Error Code: 0x80070032 Note: This particular instance of the application will be running in a customers account on a shared hosting enviroment so access to IIS UI is not/will not be available. Specifically seeking configuration file adjustments.

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• Building a directory tree from a list of file paths

  - by Abignale

  I am looking for a time efficient method to parse a list of files into a tree. There can be hundreds of millions of file paths. The brute force solution would be to split each path on occurrence of a directory separator, and traverse the tree adding in directory and file entries by doing string comparisons but this would be exceptionally slow. The input data is usually sorted alphabetically, so the list would be something like: C:\Users\Aaron\AppData\Amarok\Afile C:\Users\Aaron\AppData\Amarok\Afile2 C:\Users\Aaron\AppData\Amarok\Afile3 C:\Users\Aaron\AppData\Blender\alibrary.dll C:\Users\Aaron\AppData\Blender\and_so_on.txt From this ordering my natural reaction is to partition the directory listings into groups... somehow... before doing the slow string comparisons. I'm really not sure. I would appreciate any ideas. Edit: It would be better if this tree were lazy loaded from the top down if possible.

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• Maintain set of local commits working with git-svn

  - by benizi

  I am using git to develop against a project hosted in subversion, using git-svn: git svn clone svn://project/ My general workflow has been to repeatedly edit-and-commit on the master branch, then commit to the svn repository via: git stash git svn dcommit git stash apply One of the local modifications that 'stash' command is preserving, that I don't want to commit to the svn repository, is a changed database connection string. What's the most convenient way to keep this local change without the extra 'stash' steps? I suspect that something like 'stash' or 'quilt' is what I'm looking for, but I'm still new enough to git that I think I'm missing some terminology that would lead to the exact incantation. Update: The only solution I found that seems to avoid the git stash + git-svn action + git stash apply series was to update the git-svn ref manually: (check in local-only change to 'master', then...) $ cat .git/refs/master > .git/refs/remote/git-svn $ git svn fetch (with at least one new SVN revision) And that leaves the local-only commit as a weird (probably unsafe) commit between two svn revisions.

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• javamail vs sendmail performance during bulk email

  - by Glenn2041

  Hi all, I'm writing a Java mass emailer application to send out emails to send between 50,000 to 100,000 a day to users. The current plan is to delegate the sending to delegate to sendmail (on the local unix server). From our testing sendmail is sending a maximum of 5 emails per second. Would JavaMail be a faster option? Does anyone know what a faster way to send emails. We want to get this process out as quick as possible. Edit: BTW, a pdf will be attached too

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• Dynamically load nib for iPhone/iPad within view controller

  - by qui

  Hello I have converted an iPhone application using the wizard like thing in XCode into a universal app. It builds fine but obviously looks a bit rubbish in some areas :) I need to load nibs according to which device is being used. I dont wish to create my view controllers using initWithNib as I already have code to create the controllers with some data (initWithMyLovelyData) which doesnt do anything to do with nib loading. I know to find out the device you use UI_USER_INTERFACE_IDIOT() so I tried overriding the initWithNibName within the actual view controllers themselves, assuming they get called internally somehow. But it's not working as I guess I am unsure of the syntax. I have tried if(ipad..) self = [super initWithNibName:@"MyIpadNib" bundle:nibBundleOrNil]; And that doesnt work :/ EDIT - I know I have massively edited this, made my question a bit more specific after doing some more research - apologies!

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• Modifying a column with the 'Identity' pattern is not supported in WCF RIA Services

  - by Banford

  I've been following the walkthrough for creating your first WCF RIA Services Application from Microsoft and have encountered a problem when trying to edit and update data using the SubmitChanges() method of the Data Context. The table being updated has an Identity Specification set in SQL Server 2008 on the 'CourseID' column. However the PRIMARY key is a composite of two other fields. When using SubmitChanges() the application locks up in the browser an presents an unhandled exception. By handling this exception I managed to get the message: Modifying a column with the 'Identity' pattern is not supported. This is referring to the 'CourseID' column. Turning identity specification off solves the problem, but I need the auto-incrementing ID. In what way isn't this supported. Or where am I going wrong?

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• SignalR cross domain does not work after updating to 0.5.1

  - by jlp

  My site uses SignalR to communicate cross-domain. It worked great but I updated SignalR from 0.5.0 to 0.5.1 and my site broke. Here's my script: function start() { $.connection.hub.url = "http://otherdomain.com/signalr"; $.connection.hub.start().done(function () { $.connection.myHub.join(); }); } When script calls join - I see in Firebug that it is a POST (I believe it shoold be GET (jsonp) since it is cross domain) with no response. EDIT: I tried $.connection.hub.start({jsonp: true}). Now I have can call server from client but calls from server don't execute on client. I noticed that there are following calls: negotiate and send whereas locally (the same domain) there are: negotiate, connect, send.

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• PHP exec() on windows not working

  - by Rich Harrington

  Hey, I'm trying to execute a program on windows through PHP, the command is posted below. This doesn't seem to be running through the script at all, even though it works when the command is manually entered into the command prompt. exec('C:\\ffmpeg -i ' . $movedfile . ' -acodec aac -ab 128k -vcodec libx264 -fpre C:\\ffmpeg\\share\\ffmpeg\\libx264-hq.ffpreset -crf 22 -threads 0 -wpredp 0' . $convertedfile); Any suggestions? Thanks! EDIT: There are two slashes for path seperators, stack overflow only displays one though

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• Simple ASP.Net MVC 1.0 Validation

  - by Mike

  On the current project we are working on we haven't upgraded to MVC 2.0 yet so I'm working on implementing some simple validation with the tools available in 1.0. I'm looking for feedback on the way I'm doing this. I have a model that represents a user profile. Inside that model I have a method that will validate all the fields and such. What I want to do is pass a controller to the validation method so that the model can set the model validation property in the controller. The goal is to get the validation from the controller into the model. Here is a quick example public FooController : Controller { public ActionResult Edit(User user) { user.ValidateModel(this); if (ModelState.IsValid) ....... ....... } } And my model validation signature is like public void ValidateModel(Controller currentState) What issues can you see with this? Am I way out to lunch on how I want to do this?

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• Convert Microsoft Visio Drawing (vsd) to PDF automatically

  - by nhinkle

  An open-source project I am working on uses Visio drawings for documentation, which are checked into source control. For those working on the project who don't own Visio, we have been converting the vsd files to PDFs so that they can still view them. It's not too difficult to save a copy as a PDF when making changes to the documentation, but we would like an automated way to do this conversion, so that we can set it up as a pre-checkin script in the SVN client. If anybody knows of a way to do this, either using something built-in to Visio, or with an outside script or command line tool, we would appreciate it. Edit: Thanks to the suggestion below, I have found the Visio Viewer 2010. This will be helpful for our contributors using Windows. We would still like to have the ability to create PDFs though, as there are readers available on every major operating system, and our contributors will not be using only Windows.

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