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• php mysql flex unicode

  - by JonoB

  I have a problem with saving the £ symbol to a mysql database. I am running a flex front end, with a php + mysql backend When I save a record from flex, the string gets sent to the server as "This amount is £10" php views the string as above, and when it gets saved into the DB, it gets saved as "This amount is £10". My understanding is that this is correct based on MySQL or PHP is appending a  whenever the £ is used I now retrieve the above record, and it gets sent to flex as "This amount is £10". Flex correctly displays this in a textarea as "This amount is £10" I change another field in the same record in flex, and re-save the transaction. The string now gets sent to the server as "This amount is £10" The record is now saved into the DB as "The amount is £10". Each time the record is re-saved, this effect snowballs. Thanks for any advice you can give.

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• Update image in ASP.NET page from memory without refreshing the page.

  - by ZeeMan

  I have a command line C# server and an ASP.NET client, they both communicate via .NET Remoting. The server is sending the client still images grabbed from a webcam at say 2 frames a second. I can pass the images down to the client via a remote method call and the image ends up in this client method: public void Update(System.Drawing.Image currentFrame) { // I need to display the currentFrame on my page. } How do i display the image on the a page without saving the image to the hard disc? If it was a winForms app i could pass currentFrame to a picturebox ie. picturebox.Image = currentFrame. The above Update method gets fired at least 2 times a second. If the client was a winForms app i could simply put picturebox.Image = currentFrame and the current frame on the screen would automatically get updated. How do i achieve the same effect with ASP.NET? Will the whole page need to be reloaded etc?

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• Upsert - Efficient Update or Insert in VB.Net, SQL Server

  - by HK1

  I'm trying to understand how to streamline the process of inserting a record if none exists or updating a record if it already exists. I'm not using stored procedures, although maybe that would be the most efficient way of doing this. The actual scenario in which this is necessary is saving a user preference/setting to my SettingsUser table. In MS Access I would typically pull a DAO recordset looking for the specified setting. If the recordset comes back empty then I know I need to add a new record which I can do with the same recordset object. On the other hand, if it isn't empty, I can just update the setting's value right away. In theory, this is only two database operations. What is the recommended way of doing this in .NET?

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• Validating a Postscript without trying to print it?

  - by Epaga

  Saving data to Postscript in my app results in a Postscript file which I can view without issues in GhostView, but when I try to print it, the printer isn't able to print it because it seems to be invalid. Is there a way to validate / find errors in Postscript files without actually sending it to a printer? Preferred would be some kind of Java API/library, but a program which does the same would be fine as well. Edit #1 : no I don't know why it's invalid, nor even necessarily if it's invalid, but would like to be able to validate it outside of ghostview, or figure out what's going on when it can't print. Answer : Well using the ps2ps trick I was able to see the output that Postscript does and there check the difference. The difference was that I am not allowed to have a decimal number for the width or height of images in the Postscript, but rather only integers. So I still didn't find a way to validate, but this way was good enough for my problem. Thanks.

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• Send file by webservice

  - by phenevo

  Hi, I have webservice, wwith method: [WebMethod] public byte[] GetFile(string FName) { System.IO.FileStream fs1 = null; fs1 = System.IO.File.Open(FName, FileMode.Open, FileAccess.Read); byte[] b1 = new byte[fs1.Length]; fs1.Read(b1, 0, (int)fs1.Length); fs1.Close(); return b1; } and it works with small file like 1mb, but when it comes to photoshop's file (about 1,5gb) I get: System.OutOfMemoryException The idea is I have winforms application which get this file and saving it on local disc.

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• jquery bind click event

  - by Adem

  I am having a problem with my code if (text.length < 1) { args.IsValid = false; $('#<% = cmdSaveRequest.ClientID()> %>').removeAttr('click'()); } else { $('#<% = cmdSaveRequest.ClientID()> %>').click(savingData()); args.IsValid = true; } when I assign click event like $('#<% = cmdSaveRequest.ClientID() %').click(savingData()); it executes the saving data function Is there any way to bind the click event to button but whiteout executing the function just bind it and after user clicks the button then the function executes?

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• How do I execute a cmd in C#, then in the same window execute another command that follows?

  - by Ashh

  Hey Guys, Right what im trying to accomplish is a program that basically sets the active partition in 1 click, saving the effort time and skill of using cmd prompt etc. I have looked into the System.Management name space but couldn't work out how to use it :( So i have resorted to using CMD, i have got a module application written in C# and basically i want to run "DISKPART" which then starts the diskpart in the cmd window, then i want to ask it to "Select disk 0" followed by "select partition 1" finally followed by "active". Doing this in CMD yourself works fine but with an application its proved to be awkward :( What ive managed to get it to do is run DiskPart fine in one window with Process.Start, then get it to open a new window and run the next piece of code but because the new window hasnt ran the diskpart cmd it doesnt work :( Any suggestions? Thanks! Ash

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• A reasonable way to add attributes to an xml root element.

  - by DrLazer

  The function "WriteStartElement" does not return anything. I find this a little bizzare. So up until now I have been doing it like this. XmlDocument xmlDoc = new XmlDocument(); XmlTextWriter xmlWriter = new XmlTextWriter(m_targetFilePath, System.Text.Encoding.UTF8); xmlWriter.Formatting = Formatting.Indented; xmlWriter.WriteProcessingInstruction("xml", "version='1.0' encoding='UTF-8'"); xmlWriter.WriteStartElement("client"); xmlWriter.Close(); xmlDoc.Load(m_targetFilePath); XmlElement root = xmlDoc.DocumentElement; Saving the doc, then reloading it to get hold of the start element so i can write attributes to it. Does anybody know the correct way of doing this because I'm pretty sure what I'm doing isn't right. I tried to use xmlWriter.AppendChild() but it doesnt seem to write out anything. :(

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• iPhone OpenGLES textures - colour banding

  - by chicknstu

  I've got a problem with openGL on iPhone which I'm sure must have a simple solution! When I load a texture and display it, I get a lot of what I believe is called 'Colour Banding', whereby the colours, particularly on gradients, seem to get automatically 'optimized'. Just to demonstrate that this wasn't anything wrong with my own code, I downloaded the iPhone 'Crashlanding' app and replaced the background image, and as you can see in the image below (Taken from the simulator), the exact same thing happens. The image on the left is the original PNG, and on the right is it in the game. It's almost as if it's palette is being downsized to a 256 colour one. Screenshot I'm sure this is related to the format I'm saving the image as, although it doesn't just happen with PNG's, it seems to happen no matter what image format I chose. Doing my head in! If you want to recreate this, simply download the crash landing app, and replace the background. Thanks so much in advance for any help.

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• Update tableview instantly as data pushed in core data iphone

  - by user336685

  I need to update the tableview as soon as the content is pushed in core data database. for this AppDelegate.m contains following code NSManagedObjectContext *moc = [self managedObjectContext]; NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:[NSEntityDescription entityForName:@"FeedItem" inManagedObjectContext:moc]]; //for loop // push data in code data & then save context [moc save:&error]; ZAssert(error == nil, @"Error saving context: %@", [error localizedDescription]); //for loop ends This code triggers following code from RootviewController.m - (void)controllerWillChangeContent:(NSFetchedResultsController*)controller { [[self tableView] beginUpdates]; } But this updates the tableview only at the end of the for loop ,the table does not get updated after immediate push in db. I tried following code but that didn't work - (void)controllerDidChangeContent:(NSFetchedResultsController *)controller { // In the simplest, most efficient, case, reload the table view. [self.tableView reloadData]; } I have been stuck with this problem for several days.Please help.Thanks in advance for solution.

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• Grails Duplicate Exception handling

  - by Srinath

  Hi, How to catch duplicate key exceptions in Grails . when trying to save existing integer for a unique column constraint, the error is generating while saving/updating a record . Also used try{ object.save(flush:true) }catch(org.springframework. dao.DataIntegrityViolationException e){ println e.message }catch(org.hibernate.exception.ConstraintViolationException ex){ println e.message }catch(Exception e){ println e.message } But unable to catch this issue . 23:41:13,265 ERROR [JDBCExceptionReporter:101] Duplicate entry '1' for key 2 23:41:13,281 ERROR [AbstractFlushingEventListener:324] Could not synchronize database state with session org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:94) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266) at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168) at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1027) Could you please share the solution to solve this .

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• Microsoft Azure compared to "regular" webhosting

  - by Jonas Cannehag

  Hi all, i have an idea of putting my blog on to Azure instead of a regular webhosting company. The only thing i cannot figure out is if that will be cheaper or not. The good part is the getting-knowledge of Azure but on the other hand it is my personal blog and i really don't wanna spend to much money on it. So do you have any idea of how the pricing works? I saw some calculator but didn't manage to understand the numbers. Thanks in advance

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• Managing changes in memory-based data format

  - by kamziro

  So I've been using a compact data type in c++, and saving from memory or loading from the file involves just copying the bits of memory in and out. However, the obvious drawback of this is that if you need to add/remove elements on the data, it becomes kind of messy. There's also problems with versioning, suppose you distribute a program which uses version A of the data, and then the next day you make version B of it, and then later on version C. I suppose this can be solved by using something like xml or json. But suppose you can't do that for technical reasons. What is the best way to do this, apart from having to make different if cases etc (which would be pretty ugly, I'd imagine)

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• Redirects in RoR: Which one to use?

  - by scrr

  Hello, we are making a website that takes a generated incoming link and forwards the user who is clicking on it to another website while saving a record of the action in our DB. I guess it's basically what ad-services like AdSense do. However, what is the best way to redirect the user? I think html-meta-tag-redirects are out of question. So what other options are there? head :moved_permanently, :location => "http://www.domain.com/" This one is a 301-redirect. The next one is a 302: redirect_to "http://www.domain.com" Are there any others? And which is best to use for our case? The links are highly-dynamic and change all the time. We want to make sure we don't violate any existing standards and of course we don't want search-engines to tag us as spammers (which we are not, btw). Thanks!

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• Linq to SQL EntitySet Records causing duplicate insertion

  - by Savvas Sopiadis

  In a WPF application i'm using Linq to SQL in a multi tier application. (This is an archailogy photo filing application), so every excavation has its corresponding Pictures, thus a one-to-many relationship. This relationship is correctly created by SQLMetal (which i'm using to create the POCOs). So here is the situation i 'm having trouble with: Saving changes (either of new or altered objects) is done through UnitOfWork() pattern this way: using (IUnitOfWork unitOfWork = UnitOfWork.Begin()) { //if this is a new record if (SelectedExcavation.excavation.ExcavationId == 0) { IsNewRecord = true; excavService.Add(SelectedExcavation.excavation); } //send the actual changes to the dbms unitOfWork.Commit(); } Everything works fine! BUTTTT!!! Whenever a record gets updated which has (already at least one ) corresponding Picture Record: 1) a new Excavation Record is inserted 2) the current Excavation Record gets updated 3) the previous Picture Record gets its Id changed to the newly created ExcavationId What is going on under the hood? Does Linq to SQL not handle such simple update scenarios? Thanks in advance

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• How to save objects using Multi-Threading in Core Data?

  - by Konstantin

  I'm getting some data from the web service and saving it in the core data. This workflow looks like this: get xml feed go over every item in that feed, create a new ManagedObject for every feed item download some big binary data for every item and save it into ManagedObject call [managedObjectContext save:] Now, the problem is of course the performance - everything runs on the main thread. I'd like to re-factor as much as possible to another thread, but I'm not sure where I should start. Is it OK to put everything (1-4) to the separate thread?

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• Printing saved HTML to jsp keeps getting corrupted

  - by JWL

  I have a JAVA object where I save a HTML string value I call message. The saved data looks like the below, You have received a new <a href='' onclick='return popupRentalView('5282053859835904');'>Rental Request 5282053859835904</a>. Please view your open orders. But when printed to the JSP file and displayed at runtime using <%=pm.getMessage()%> or <%out.print(pm.getMessage());%> The actual html code comes out all messed up, You have received a new <a 5282053859835904');'="" onclick="return popupRentalView(" href="">Rental Request 5282053859835904</a> . Please view your open orders. Any thoughts on why the displayed string does not match the saved string? JAVA code for saving is note.setMessage("You have received a new <a href=\"\" onclick='return popupRentalView('" + requestId + "');'> Rental Request " + requestId + "</a>. Please view your open orders.");

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• [C#] Async threaded tcp server

  - by mark_dj

  I want to create a high performance server in C# which could take about ~10k clients. Now i started writing a TcpServer with C# and for each client-connection i open a new thread. I also use one thread to accept the connections. So far so good, works fine. The server has to deserialize AMF incoming objects do some logic ( like saving the position of a player ) and send some object back ( serializing objects ). I am not worried about the serializing/deserializing part atm. My main concern is that I will have a lot of threads with 10k clients and i've read somewhere that an OS can only hold like a few hunderd threads. Are there any sources/articles available on writing a decent async threaded server ? Are there other possibilties or will 10k threads work fine ? I've looked on google, but i couldn't find much info about design patterns or ways which explain it clearly

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• Online Sports betting website using Drupal

  - by Saurabh

  I wanted to know how suitable is Drupal for making a sports betting website similar to http://www.sportsinteraction.com/ . I am aware that there are modules like Bookmaker in Drupal which could help . However, I am puzzled about how to handle the user accounts can be extended to keep a track of the money in each individual account. Also I have with me betting scripts purchased from http://sportbettingscript.com/ . Can the same be integrated with Drupal? Wish to know your thoughts. Any help would be appreciated. Thanks.

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• cheap way to scale a rails application

  - by VP

  I have an application, that is becoming big, but until now, its not giving me a good revenue. That means, short money to re-invest on that. In this scenario, i found a way to make a "cheap distributed rails" deployment. I've got 4 VPS. All of them are in the same physical server. I added a load balance server running HAproxy in one dedicated VPS. There i pointed my virtual ip address where my domain name is associated. Behind this HAproxy i have more two VPS running my rails APP, passenger and memcache. Both apps servers are looking to the same database server, my 4th VPS. So with $44/month, i mounted a distributed environment. It won't be my final choice, but now, that the budget is short, is that a good way to deploy a rails application? Any pros or cons? It worth my $44/month?

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• Parsing log files in a folder in ColdFusion

  - by Simon Guo

  The problem is there is a folder ./log/ containing the files like: jan2010.xml, feb2010.xml, mar2010.xml, jan2009.xml, feb2009.xml, mar2009.xml ... each xml file would like: <root><record name="bob" spend="20"></record>...(more records)</root> I want to write a piece of ColdFusion code (log.cfm) that simply parsing those xml files. For the front end I would let user to choose a year, then the click submit button. All the content in that year will be show up in separate table by month. Each table shows the total money spent for each person. like: person cost bob 200 mike 300 Total 500 Thanks.

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• How do I save a copy of the clipboard and then revert back to it?

  - by cksubs

  I'm reading words in a text box by simulating the key presses required to highligh and copy the text. When I'm done, I want the clipboard to be exactly how I found it. I was hoping I'd be able to do something like this: IDataObject clipboardBackup = Clipboard.GetDataObject(); Clipboard.Clear(); //Save other things into the clipboard here, etc// Clipboard.SetDataObject(clipboardBackup); But that doesn't seem to work. It looks like you can go the route of specifically trying for text, audio, pictures, etc. and then saving them accordingly. (I guess 'data object' is specialized like that in my example too, I was hoping it was generic.) I'd prefer not to use cases for every possible type of clipboard data, both to be more concise and to make sure I never lose the data regardless of format. Any tips for grabbing any and all of the clipboard and then restoring it?

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• Something like System.Diagnostics.Process.Start to run a stream

  - by phenevo

  Hi, I get from server images and videos by stream. Now I'm saving it: Stream str = client.GetFile(path); using (var outStream = new FileStream(@"c:\myFile.jpg", FileMode.Create)) { var buffer = new byte[4096]; int count; while ((count = str.Read(buffer, 0, buffer.Length)) > 0) { outStream.Write(buffer, 0, count); } } I can be jpg, mpg, flv and a lot of other multimedia types (Before I get stream I know what is a extension of this file). Now I want to not save it , bu run direct from stream. Is it possible ??

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• MongoDB RSS Feed Entries, Embed the Entries in the Feed Object?

  - by Patrick Klingemann

  I am saving a reference to an RSS Feed in MongoDB, each Feed has an ever growing list of Entries. As I'm designing my schema, I'm concerned about this statement from the MongoDB Schema Design - Embed vs. Reference Documentation: If the amount of data to embed is huge (many megabytes), you may read the limit on size of a single object. This will surely happen if I understand the statement correctly. So the question is, I am correct to assume that I should not embed the Feed Entries within a Feed because I'll eventually reach the limit on size of a single object?

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• Action "foo/foobar" does not exist error in Symfony

  - by morpheous

  I am saving pictures under my web folder in the folder: web/media/photo In the template that displays the photo, I have the following snippet: <?php echo link_to(image_tag('media/photo/filename.jpg', '@some_url); ?> When I display the view, although the photo is displayed correctly and the link works, I get the following error in my php_errors.log file: Action "media/photo" does not exist. Why is symfony trying to parse the path to the image as a url? Does anyone know how to fix this?

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