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  • Spring MVC validation with Annotations

    - by cdecker
    I'm having quite some trouble since I migrated my controllers from classical inheritance to use the annotations like @Controller and @RequestMapping. The problem is that I don't know how to plug in validation like in the old case. Are there any good tutorials about this?

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  • Removing file from Mercurial MQ Patch

    - by Nathan Lee
    I have large MQ patch applied in Mercurial. What has happened is I have done qrefresh and included files in my patch that I do not want to include. Is there a way to remove the changes to these file from my patch with out manually editing it? In this case if I was just working without MQ, all I would have to do is hg revert.

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  • Encrypt parameters passed to a swf

    - by 23tux
    Hi, does anyone know how to encrypt the parameters that are passed to a flash movie? The case is, that the user should not be able to read the parameters in the source code in plaintext. And of course, I have to able to decrypt the parameter in actionscript 3 ;-) thx, tux

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  • UpdateProgress with UpdatePanel not showing up in User control when page is loading

    - by Carter
    Is this typical behavior of the UpdateProgress for an ASP.Net UpdatePanel? I have an update panel with the UpdateProgress control inside of a user control window on a page. If I then make the page in the background do some loading and click a button in the user control update panel the UpdateProgress does not show up at all. It's like the UpdatePanels refresh request is not even registered until after the actual page is done doing it's business. It's worth noting that it will show up if nothing is happening in the background. The functionality I want is what you would expect. I want to loader to show up if it has to wait for anything to get it's refresh done when after the button is clicked. I know I can get this functionality if I just use jquery ajax with a static web method, but you can't have static web methods inside of a user control. I could have it in the page but it really doesn't belong there. A full-blown wcf wouldn't really be worth it in this case either. I'm trying to compromise with an UpdatePanel but these things always seem to cause me some kind of trouble. Maybe this is just the way it works? Edit:So I'll clarify a bit what I'm doing. What's happening is I have a page and all it has on it are some tools on the side and a big map. When the page initially loads it takes some time to load the map. Now if while it's loading I open up the tool (a user control) that has the update panel in question in it and click the button on this user control that should refresh the update panel with new data and show the loading sign (in the updateprogress) then the UpdateProgress loading image does not show up. However, the code run by the button click does run after the page is done loading (as expected) and The UpdateProgress will show up if nothing on the page containing the user control is loading. I just want the loader to show up while the page is loading. I thought my problem was that perhaps the map loading is in an update panel and my UpdateProgress was only being associated with the update panel for the user control's update panel. Hence, I would get no loading icon when the map was loading. This is not the case though.

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  • GOTO still considered harmful?

    - by Kyle Cronin
    Everyone is aware of Dijkstra's Letters to the editor: go to statement considered harmful (also here .html transcript and here .pdf) and there has been a formidable push since that time to eschew the goto statement whenever possible. While it's possible to use goto to produce unmaintainable, sprawling code, it nevertheless remains in modern programming languages. Even the advanced continuation control structure in Scheme can be described as a sophisticated goto. What circumstances warrant the use of goto? When is it best to avoid? As a followup question: C provides a pair of functions, setjmp and longjmp, that provide the ability to goto not just within the current stack frame but within any of the calling frames. Should these be considered as dangerous as goto? More dangerous? Dijkstra himself regretted that title, of which he was not responsible for. At the end of EWD1308 (also here .pdf) he wrote: Finally a short story for the record. In 1968, the Communications of the ACM published a text of mine under the title "The goto statement considered harmful", which in later years would be most frequently referenced, regrettably, however, often by authors who had seen no more of it than its title, which became a cornerstone of my fame by becoming a template: we would see all sorts of articles under the title "X considered harmful" for almost any X, including one titled "Dijkstra considered harmful". But what had happened? I had submitted a paper under the title "A case against the goto statement", which, in order to speed up its publication, the editor had changed into a "letter to the Editor", and in the process he had given it a new title of his own invention! The editor was Niklaus Wirth. A well thought out classic paper about this topic, to be matched to that of Dijkstra, is Structured Programming with go to Statements (also here .pdf), by Donald E. Knuth. Reading both helps to reestablish context and a non-dogmatic understanding of the subject. In this paper, Dijkstra's opinion on this case is reported and is even more strong: Donald E. Knuth: I believe that by presenting such a view I am not in fact disagreeing sharply with Dijkstra's ideas, since he recently wrote the following: "Please don't fall into the trap of believing that I am terribly dogmatical about [the go to statement]. I have the uncomfortable feeling that others are making a religion out of it, as if the conceptual problems of programming could be solved by a single trick, by a simple form of coding discipline!"

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  • Doctrine2 update both sides of association

    - by orourkedd
    I'm using this to update both sides of an association but want to know if there is a more efficient way to do this. In this case, it is a self-referencing OneToMany parent/child association: public function setParent(Node $parent, $inverse = true) { $this->parent = $parent; if($inverse) $parent->addChild($this, false); } public function addChild(Node $child, $inverse = true) { if(!$this->children->contains($child)) { $this->children[] = $child; if($inverse) $child->setParent($this, false); } }

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  • help with making a password checker in java

    - by Cheesegraterr
    Hello, I am trying to make a program in Java that checks for three specific inputs. It has to be 1. At least 7 characters. 2. Contain both upper and lower case alphabetic characters. 3. Contain at least 1 digit. So far I have been able to make it check if there is 7 characters, but I am having trouble with the last two. What should I put in my loop as an if statement to check for digits and make it upper and lower case. Any help would be greatly appreciated. Here is what I have so far. import java.awt.*; import java.io.*; import java.util.StringTokenizer; public class passCheck { private static String getStrSys () { String myInput = null; //Store the String that is read in from the command line BufferedReader mySystem; //Buffer to store the input mySystem = new BufferedReader (new InputStreamReader (System.in)); //creates a connection to system input try { myInput = mySystem.readLine (); //reads in data from the console myInput = myInput.trim (); } catch (IOException e) //check { System.out.println ("IOException: " + e); return ""; } return myInput; //return the integer to the main program } //**************************************** //main instructions go here //**************************************** static public void main (String[] args) { String pass; //the words the user inputs String temp = ""; //holds temp info int stringLength; //length of string boolean goodPass = false; System.out.print ("Please enter a password: "); //ask for words pass = getStrSys (); //get words from system temp = pass.toLowerCase (); stringLength = pass.length (); //find length of eveyrthing while (goodPass == false) { if (stringLength < 7) { System.out.println ("Your password must consist of at least 7 characters"); System.out.print ("Please enter a password: "); //ask for words pass = getStrSys (); stringLength = pass.length (); goodPass = false; } else if (something to check for digits) { } }

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  • Java Hardware Acceleration

    - by Freezerburn
    I have been spending some time looking into the hardware acceleration features of Java, and I am still a bit confused as none of the sites that I found online directly and clearly answered some of the questions I have. So here are the questions I have for hardware acceleration in Java: 1) In Eclipse version 3.6.0, with the most recent Java update for Mac OS X (1.6u10 I think), is hardware acceleration enabled by default? I read somewhere that someCanvas.getGraphicsConfiguration().getBufferCapabilities().isPageFlipping() is supposed to give an indication of whether or not hardware acceleration is enabled, and my program reports back true when that is run on my main Canvas instance for drawing to. If my hardware acceleration is not enabled now, or by default, what would I have to do to enable it? 2) I have seen a couple articles here and there about the difference between a BufferedImage and VolatileImage, mainly saying that VolatileImage is the hardware accelerated image and is stored in VRAM for fast copy-from operations. However, I have also found some instances where BufferedImage is said to be hardware accelerated as well. Is BufferedImage hardware accelerated as well in my environment? What would be the advantage of using a VolatileImage if both types are hardware accelerated? My main assumption for the advantage of having a VolatileImage in the case of both having acceleration is that VolatileImage is able to detect when its VRAM has been dumped. But if BufferedImage also support acceleration now, would it not have the same kind of detection built into it as well, just hidden from the user, in case that the memory is dumped? 3) Is there any advantage to using someGraphicsConfiguration.getCompatibleImage/getCompatibleVolatileImage() as opposed to ImageIO.read() In a tutorial I have been reading for some general concepts about setting up the rendering window properly (tutorial) it uses the getCompatibleImage method, which I believe returns a BufferedImage, to get their "hardware accelerated" images for fast drawing, which ties into question 2 about if it is hardware accelerated. 4) This is less hardware acceleration, but it is something I have been curious about: do I need to order which graphics get drawn? I know that when using OpenGL via C/C++ it is best to make sure that the same graphic is drawn in all the locations it needs to be drawn at once to reduce the number of times the current texture needs to be switch. From what I have read, it seems as if Java will take care of this for me and make sure things are drawn in the most optimal fashion, but again, nothing has ever said anything like this clearly. 5) What AWT/Swing classes support hardware acceleration, and which ones should be used? I am currently using a class that extends JFrame to create a window, and adding a Canvas to it from which I create a BufferStrategy. Is this good practice, or is there some other type of way I should be implementing this? Thank you very much for your time, and I hope I provided clear questions and enough information for you to answer my several questions.

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  • in tcl, how do I replace a line in a file?

    - by n00b programmer
    let's say I opened a file, then parsed it into lines. Then I use a loop: foreach line $lines {} inside the loop, for some lines, I want to replace them inside the file with different lines. Is it possible? Or do I have to write to another temporary file, then replace the files when I'm done? e.g., if the file contained AA BB and then I replace capital letters with lower case letters, I want the original file to contain aa bb Thanks!

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  • Create links programmatically inside an EmberJS view

    - by Michael Gallego
    I have a pretty complex view to render which involves some kind of recursion (the typical folder/file nested list). The fact that it contains heterogeneous objects (folders and files) make it even harder to write Handlebars templates. Therefore, the only solution I've found is to create a view, and manually fill the render buffer. I came with the following solution: App.LibraryContentList = Ember.View.extend({ tagName: 'ol', classNames: ['project-list', 'dd-list'], nameChanged: function() { this.rerender(); }.observes('[email protected]'), render: function(buffer) { // We only start with depth of zero var content = this.get('content').filterProperty('depth', 0); content.forEach(function(item) { this.renderItem(buffer, item); }, this); }, renderItem: function(buffer, item) { switch (item.constructor.toString()) { case 'Photo.Folder': this.renderFolder(buffer, item); break; case 'Photo.File': this.renderFile(buffer, item); break; } }, renderFolder: function(buffer, folder) { buffer.push('<li class="folder dd-item">'); buffer.push('<span class="dd-handle">' + folder.get('name') + '</span>'); // Merge sub folders and files, and sort them by sort order var content = this.mergeAndSort(); if (content.get('length') > 0) { buffer.push('<ol>'); content.forEach(function(item) { this.renderItem(buffer, item); }, this); buffer.push('</ol>'); } buffer.push('</li>'); }, renderFile: function(buffer, album) { buffer.push('<li class="album dd-item">'); buffer.push('<span class="dd-handle">' + file.get('name') + '</span>'); buffer.push('</li>'); } }); Now, what I'd like is to be able to add links so that each folder and each file is clickable and redirect to another route. But how am I supposed to do that, as I don't have access to the linkTo helper? I've tried to play with the LinkView view, but without any success. Should I register handlers manually for each item? I've also thought about breaking that with a CollectionView instead, and splitting the content by depth so that I could render it using templates, but it seems more complicated. Any thoughts?

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  • Is there a Pac-Man-like character in ASCII or Unicode?

    - by Ricket
    Simple question: is there a character that looks either like Pac-Man, or like the ghost in Pac-Man? With Google's recent Pac-Man logo, everyone should know what these look like, but in case you don't here are some sample images: If you answer "no" please provide a little more proof that you actually searched all unicode characters...

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  • when I click submit it should change the text and update the row something is wrong there

    - by Yousef Altaf
    good morning programers, I have this small code which content a news control panel and I made a submit button there to active or inactive the news row so if I click on this button it should change if it's active it will be inactive it worked but there's something wrong there when I click on item one it updates the last on the table not the first on as it should do. here is the code that I use <?php $getNewsData="select * from news"; $QgetNewsData=$db->query($getNewsData)or die($db->error); $count=mysqli_num_rows($QgetNewsData); while($newsRow = mysqli_fetch_array($QgetNewsData)) { $getActivityStatus=$newsRow['news_activity']; switch($getActivityStatus){ case 1: echo"<input style='color:red; font-weight:bold; background:none; border:0;' name='inactive' type='submit' value='?????' /><input name='inActive' type='hidden' value='".$newsRow['news_id']."'/>"; break; case 0: echo"<input style='color:green; font-weight:bold; background:none; border:0;' name='active' type='submit' value='?????' /><input name='Active' type='hidden' value='".$newsRow['news_id']."'/>"; break;} } if(isset($_POST['inactive'])){ $inActive=$_POST['inActive']; echo $inActive; $updateStatus="UPDATE news SET news_activity=0 WHERE news_id='".$inActive."' "; $QupdateStatus=$db->query($updateStatus)or die($db->error); if($QupdateStatus){ } } if(isset($_POST['active'])){ $Active=$_POST['Active']; echo $Active; $updateStatus="UPDATE news SET news_activity=1 WHERE news_id='".$Active."' "; $QupdateStatus=$db->query($updateStatus)or die($db->error); if($QupdateStatus){ header("Location:CpanelHome.php?id=7"); } } ?> please any idea to solve this problem. Thanks, regards

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  • Reset element color to default stylesheet color (Jquery, Javascript)

    - by leaf dev
    I need to be able to reset an input field back to its original color after it has been possibly changed via javascript to a different value. The problem is I do not want to hard code the value obviously in case the stylesheet changes. I would like to use the default color used on the page. Is resetting the color like this fine, or is there a better way to do this? $('#theinput').css('color', '');

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  • Django vs GAE + Django vs GAE + other framework

    - by Ilian Iliev
    I`m looking for opinion which one is better for building web applications(web sites). I have some experience with Django, and some with Google App Engine and App-Engine-Patch for Django. And it seems to me that only Django is working faster than the GAE implementation. Is there some other frameworks that simplify the developments process, providing forms creating, user management, url resolving etc. Thanks in advance, Ilian Iliev P.S. I am also interested in GAE and webapp framework case

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  • Why does this thumbnail generation code throw OutOfMemoryException on large files?

    - by tsilb
    This code works great for generating thumbnails, but when given a very large (100MB+) TIFF file, it throws OutOfMemoryExceptions. When I do it manually in Paint.NET on the same machine, it works fine. How can I improve this code to stop throwing on very large files? In this case I'm loading a 721MB TIF on a machine with 8GB RAM. The Task Manager shows 2GB used so something is preventing it from using all that memory. Specifically it throws when I load the Image to calculate the size of the original. What gives? /// <summary>Creates a thumbnail of a given image.</summary> /// <param name="inFile">Fully qualified path to file to create a thumbnail of</param> /// <param name="outFile">Fully qualified path to created thumbnail</param> /// <param name="x">Width of thumbnail</param> /// <returns>flag; result = is success</returns> public static bool CreateThumbnail(string inFile, string outFile, int x) { // Validation - assume 16x16 icon is smallest useful size. Smaller than that is just not going to do us any good anyway. I consider that an "Exceptional" case. if (string.IsNullOrEmpty(inFile)) throw new ArgumentNullException("inFile"); if (string.IsNullOrEmpty(outFile)) throw new ArgumentNullException("outFile"); if (x < 16) throw new ArgumentOutOfRangeException("x"); if (!File.Exists(inFile)) throw new ArgumentOutOfRangeException("inFile", "File does not exist: " + inFile); // Mathematically determine Y dimension int y; using (Image img = Image.FromFile(inFile)) { // OutOfMemoryException double xyRatio = (double)x / (double)img.Width; y = (int)((double)img.Height * xyRatio); } // All this crap could have easily been Image.Save(filename, x, y)... but nooooo.... using (Bitmap bmp = new Bitmap(inFile)) using (Bitmap thumb = new Bitmap((Image)bmp, new Size(x, y))) using (Graphics g = Graphics.FromImage(thumb)) { g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality; System.Drawing.Imaging.ImageCodecInfo codec = System.Drawing.Imaging.ImageCodecInfo.GetImageEncoders()[1]; System.Drawing.Imaging.EncoderParameters ep2 = new System.Drawing.Imaging.EncoderParameters(1); ep2.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L); g.DrawImage(bmp, new Rectangle(0,0,thumb.Width, thumb.Height)); try { thumb.Save(outFile, codec, ep2); return true; } catch { return false; } } }

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  • How to bulk insert from CSV when some fields have new line character?

    - by z-boss
    I have a CSV dump from another DB that looks like this (id, name, notes): 1001,John Smith,15 Main Street 1002,Jane Smith,"2010 Rockliffe Dr. Pleasantville, IL USA" 1003,Bill Karr,2820 West Ave. The last field may contain carriage returns and commas, in which case it is surrounded by double quotes. I use this code to import CSV into my table: BULK INSERT CSVTest FROM 'c:\csvfile.csv' WITH ( FIELDTERMINATOR = ',', ROWTERMINATOR = '\n' ) SQL Server 2005 bulk insert cannot figure out that carriage returns inside quotes are not row terminators. How to overcome?

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  • Is currying just a way to avoid inheritance?

    - by Alex Mcp
    So my understanding of currying (based on SO questions) is that it lets you partially set parameters of a function and return a "truncated" function as a result. If you have a big hairy function takes 10 parameters and looks like function (location, type, gender, jumpShot%, SSN, vegetarian, salary) { //weird stuff } and you want a "subset" function that will let you deal with presets for all but the jumpShot%, shouldn't you just break out a class that inherits from the original function? I suppose what I'm looking for is a use case for this pattern. Thanks!

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  • How do I sanitize LaTeX input?

    - by Conley Owens
    I'd like to take user input (sometimes this will be large paragraphs) and generate a LaTeX document. I'm considering a couple of simple regular expressions that replaces all instances of "\" with "\textbackslash " and all instances of "{" or "}" with "\}" or "\{". I doubt this is sufficient. What else do I need to do? Note: In case there is a special library made for this, I'm using python.

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  • Excel Macro to create sheets

    - by Harish
    I have a Excel sheet with two columns and I need to create new sheets based on the values of the first column.ie A B test1 Value21 test1 Values22 test2 Value21 test2 Value32 test3 Values32 IN this case I need to create three sheets namely test1,test2 and test3 Sheet 1 should contain test1 field and its corresponding values.Similarly sheet 2 and 3 should contain corresponding values. Can anyone help me in writing an Excel Macro for this

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  • overload Equals, is this wrong?

    - by Zka
    Reading some piece of code and I keep seeing this : public override bool Equals (object obj) { if (obj == null || this.GetType ().Equals (obj.GetType())) return false; //compare code... } Shouldn't it be like this (note the !): public override bool Equals (object obj) { if (obj == null || !this.GetType ().Equals (obj.GetType())) return false; //compare code... } Or does the equals perform differently in this case?

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  • Cell value is read as #### in excel

    - by Sathish
    I am reading a cell value from excel using named range in my case sometime the column width is smaller then the value that is present in the cell and hence it is appearing as ##### when it is huge number. when i read this from csharp it is reading as #####. Any fix for this

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  • Getters and Setters are bad OO design?

    - by Dan
    Getters and Setters are bad Briefly reading over the above article I find that getters and setters are bad OO design and should be avoided as they go against Encapsulation and Data Hiding. As this is the case how can it be avoided when creating objects and how can one model objects to take this into account. In cases where a getter or setter is required what other alternatives can be used? Thanks.

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