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• Setting ModerationInformation.Status from Approved back to pending removes

  - by Gavin Morgan

  Seeing if anyone else has had this problem and a resolution to it. I have a visual studio sequential workflow on a list (not a library) which does NOT use tasks, the approval process is done through the Approve/Reject OOTB buttons on the list item. The approval is a 2 stage approval, whereby if the 1st stage is completed (via clicking the Approve OOTB button), i reset the ModerationInformation.Status from Approved back to pending then send an email to the 2nd stage approver. My problem is, when i set the the ModerationInformation.Status back to Pending from Approved so there is never an approved version, the Creator loses permissions to view the item, and i get the "cannot find item" error from SharePoint for the person who created the item. The 1st and 2nd level approvers and anyone with approve rights CAN still see the item. Some more background information. the code i am using to update the moderationinformation is I get the properties from the workflow event and get a hook into the listitem properties.Item.ModerationInformation.Status = SPModerationStatusType.Pending; properties.Item.Update(); can anyone help.

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• Making Javascript and HTML5 games

  - by Jeff Meatball Yang

  A long time ago (Netscape 4-era), I wrote Javascript-based games: Pong, Minesweeper, and John Conway's Life among them. I'm getting back into it, and want to get my hands even dirtier. I have a few games in mind: Axis & Allies clone, with rugged maps and complex rules. Tetris clone, possibly with real-time player-vs-player or player-vs-computer mode Breakout clone, with a couple weapons and particle velocities In all of these, I have only a few objectives: Use JavaScript and HTML 5 - it should run on Chrome, Safari, or maybe an iPad. Start small and simple, then build-up features. Learn something new about game design and implementation. So my questions are: How would you implement these games? Do you have any technology recommendations? If you've written these games, what was the hardest part? N.B. I also want to start from first-principles - if you recommend a framework/library, I would appreciate some theory or implementation details behind it. These games are different enough that I should learn something new from each one.

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• P values in wilcox.test gone mad :(

  - by Error404

  I have a code that isn't doing what it should do. I am testing P value for a wilcox.test for a huge set of data. the code i am using is the following library(MASS) data1 <- read.csv("file1path.csv",header=T,sep=",") data2 <- read.csv("file2path.csv",header=T,sep=",") data3 <- read.csv("file3path.csv",header=T,sep=",") data4 <- read.csv("file4path.csv",header=T,sep=",") data1$K <- with(data1,{"N"}) data2$K <- with(data2,{"E"}) data3$K <- with(data3,{"M"}) data4$K <- with(data4,{"U"}) new=rbind(data1,data2,data3,data4) i=3 for (o in 1:4800){ x1 <- data1[,i] x2 <- data2[,i] x3 <- data3[,i] x4 <- data4[,i] wt12 <- wilcox.test(x1,x2, na.omit=TRUE) wt13 <- wilcox.test(x1,x3, na.omit=TRUE) wt14 <- wilcox.test(x1,x4, na.omit=TRUE) if (wt12$p.value=="NaN"){ print("This is wrong") } else if (wt12$p.value < 0.05){ print(wt12$p.value) mypath=file.path("C:", "all1-less-05", (paste("graph-data1-data2",names(data1[i]), ".pdf", sep="-"))) pdf(file=mypath) mytitle = paste("graph",names(data1[i])) boxplot(new[,i] ~ new$K, main = mytitle, names.arg=c("data1","data2","data3","data4")) dev.off() } if (wt13$p.value=="NaN"){ print("This is wrong") } else if (wt13$p.value < 0.05){ print(wt13$p.value) mypath=file.path("C:", "all2-less-05", (paste("graph-data1-data3",names(data1[i]), ".pdf", sep="-"))) pdf(file=mypath) mytitle = paste("graph",names(data1[i])) boxplot(new[,i] ~ new$K, main = mytitle, names.arg=c("data1","data2","data3","data4")) dev.off() } if (wt14$p.value=="NaN"){ print("This is wrong") } else if (wt14$p.value < 0.05){ print(wt14$p.value) mypath=file.path("C:", "all3-less-05", (paste("graph-data1-data4",names(data1[i]), ".pdf", sep="-"))) pdf(file=mypath) mytitle = paste("graph",names(data1[i])) boxplot(new[,i] ~ new$K, main = mytitle, names.arg=c("data1","data2","data3","data4")) dev.off() } i=i+1 } I am having 2 problems with this long command: 1- Without specifying a certain P value, the code gives me arouind 14,000 graphs, when specifying a p value less than 0.05 the number of graphs generated goes down to 9,0000. THE FIRST PROBLEM IS: Some P value are more than 0.05 and are still showing up! 2- I designed the program to give me a result of "This is wrong" when the Value of P is "NaN", I am getting results of "NaN" Here's a screenshot from the results do you know what the mistake i made with the command to get these errors? Thanks in advance

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• Can I load a UIImage from a URL?

  - by progrmr

  I have a URL for an image (got it from UIImagePickerController) but I no longer have the image in memory (the URL was saved from a previous run of the app). Can I reload the UIImage from the URL again? I see that UIImage has a imageWithContentsOfFile: but I have a URL. Can I use NSData's dataWithContentsOfURL: to read the URL? EDIT based on @Daniel's answer I tried the following code but it doesn't work... NSLog(@"%s %@", __PRETTY_FUNCTION__, photoURL); if (photoURL) { NSURL* aURL = [NSURL URLWithString:photoURL]; NSData* data = [[NSData alloc] initWithContentsOfURL:aURL]; self.photoImage = [UIImage imageWithData:data]; [data release]; } When I ran it the console shows: -[PhotoBox willMoveToWindow:] file://localhost/Users/gary/Library/Application%20Support/iPhone%20Simulator/3.2/Media/DCIM/100APPLE/IMG_0004.JPG *** -[NSURL length]: unrecognized selector sent to instance 0x536fbe0 *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSURL length]: unrecognized selector sent to instance 0x536fbe0' Looking at the call stack, I'm calling URLWithString, which calls URLWithString:relativeToURL:, then initWithString:relativeToURL:, then _CFStringIsLegalURLString, then CFStringGetLength, then forwarding_prep_0, then forwarding, then -[NSObject doesNotRecognizeSelector]. Any ideas why my NSString (photoURL's address is 0x536fbe0) doesn't respond to length? Why does it say it doesn't respond to -[NSURL length]? Doesn't it know that param is an NSString, not a NSURL?

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• Inheritance issue with ivar on the iPhone

  - by Buffalo

  I am using the BLIP/MYNetwork library to establish a basic tcp socket connection between the iPhone and my computer. So far, the code builds and runs correctly in simulator but deploying to device yields the following error: error: property 'delegate' attempting to use ivar '_delegate' declared in super class of 'TCPConnection' @interface TCPConnection : TCPEndpoint { @private TCPListener *_server; IPAddress *_address; BOOL _isIncoming, _checkedPeerCert; TCPConnectionStatus _status; TCPReader *_reader; TCPWriter *_writer; NSError *_error; NSTimeInterval _openTimeout; } /** The delegate object that will be called when the connection opens, closes or receives messages. */ @property (assign) id<TCPConnectionDelegate> delegate; /** The delegate messages sent by TCPConnection. All methods are optional. */ @protocol TCPConnectionDelegate <NSObject> @optional /** Called after the connection successfully opens. */ - (void) connectionDidOpen: (TCPConnection*)connection; /** Called after the connection fails to open due to an error. */ - (void) connection: (TCPConnection*)connection failedToOpen: (NSError*)error; /** Called when the identity of the peer is known, if using an SSL connection and the SSL settings say to check the peer's certificate. This happens, if at all, after the -connectionDidOpen: call. */ - (BOOL) connection: (TCPConnection*)connection authorizeSSLPeer: (SecCertificateRef)peerCert; /** Called after the connection closes. You can check the connection's error property to see if it was normal or abnormal. */ - (void) connectionDidClose: (TCPConnection*)connection; @end @interface TCPEndpoint : NSObject { NSMutableDictionary *_sslProperties; id _delegate; } - (void) tellDelegate: (SEL)selector withObject: (id)param; @end Does anyone know how I would fix this? Would I simply declare _delegate as a public property of the base class "TCPEndPoint"? Thanks for the help ya'll!

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• C++ Returning Multiple Items

  - by Travis Parks

  I am designing a class in C++ that extracts URLs from an HTML page. I am using Boost's Regex library to do the heavy lifting for me. I started designing a class and realized that I didn't want to tie down how the URLs are stored. One option would be to accept a std::vector<Url> by reference and just call push_back on it. I'd like to avoid forcing consumers of my class to use std::vector. So, I created a member template that took a destination iterator. It looks like this: template <typename TForwardIterator, typename TOutputIterator> TOutputIterator UrlExtractor::get_urls( TForwardIterator begin, TForwardIterator end, TOutputIterator dest); I feel like I am overcomplicating things. I like to write fairly generic code in C++, and I struggle to lock down my interfaces. But then I get into these predicaments where I am trying to templatize everything. At this point, someone reading the code doesn't realize that TForwardIterator is iterating over a std::string. In my particular situation, I am wondering if being this generic is a good thing. At what point do you start making code more explicit? Is there a standard approach to getting values out of a function generically?

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• Is it possible to load an assembly targeting a different .NET runtime version in a new app domain?

  - by Notre

  Hello, I've an application that is based on .NET 2 runtime. I want to add a little bit of support for .NET 4 but don't want to (in the short term), convert the whole application (which is very large) to target .NET 4. I tried the 'obvious' approach of creating an application .config file, having this: <startup useLegacyV2RuntimeActivationPolicy="true"> <supportedRuntime version="v4.0" /> </startup> but I ran into some problems that I noted here. I got the idea of creating a separate app domain. To test it, I created a WinForm project targeting .NET 2. I then created a class library targeting .NET 4. In my WinForm project, I added the following code: AppDomainSetup setup = new AppDomainSetup(); setup.ApplicationBase = "path to .NET 4 assembly"; setup.ConfigurationFile = System.Environment.CurrentDirectory + "\\DotNet4AppDomain.exe.config"; // Set up the Evidence Evidence baseEvidence = AppDomain.CurrentDomain.Evidence; Evidence evidence = new Evidence(baseEvidence); // Create the AppDomain AppDomain dotNet4AppDomain = AppDomain.CreateDomain("DotNet4AppDomain", evidence, setup); try { Assembly doNet4Assembly = dotNet4AppDomain.Load( new AssemblyName("MyDotNet4Assembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=66f0dac1b575e793")); MessageBox.Show(doNet4Assembly.FullName); } finally { AppDomain.Unload(dotNet4AppDomain); } My DotNet4AppDomain.exe.config file looks like this: <startup useLegacyV2RuntimeActivationPolicy="true"> <supportedRuntime version="v4.0" /> </startup> Unfortunately, this throws the BadImageFormatException when dotNet4AppDomain.Load is executed. Am I doing something wrong in my code, or is what I'm trying to do just not going to work? Thank you!

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• Filter large amounts of data from a HTML table w/ jQuery

  - by Bry4n

  I work for a transit agency and I have large amounts of data (mostly times), and I need a way to filter the data using two textboxes (To and From). I found jQuery quick search, but it seems to only work with one textbox. If anyone has any ideas via jQuery or some other client side library, that would be fantastic. Ideal example: To: [Textbox] From:[Textbox] <table> <tr> <td>69th street</td><td>5:00pm</td><td>5:06pm</td><td>5:10pm</td><td>5:20pm</td> </tr> <tr> <td>Millbourne</td><td>5:09pm</td><td>5:15pm</td><td>5:20pm</td><td>5:25pm</td> </tr> <tr> <td>Spring Garden</td><td>6:00pm</td><td>6:15pm</td><td>6:20pm</td><td>6:25pm</td> </tr> </table> I have an HTML page with a giant table on it listing the station names and each stations times. I want to be able to put my starting location in one box and my ending location in another box and have all the items in the table disappear that don't relate to either of the two locations typed in, leaving only two rows that match what was typed in (even if they don't spell it right or type it all the way) Similar to the jQuery quick search plugin

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• Included php file calling Javascript function

  - by Illes Peter

  Hi there! Here's the deal. I've got index.php which links to an internal JS file in it's header. index.php then includes another .php file, which outputs this: + add file. addFile() is a Javascript function defined in the external JS file. By doing this nothing happens, the included php does not "see" the JS function. Encapsulating the JS in the included PHP makes it all work. But I don't want to do it that way. Any ideas? EDIT: here's the source <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Archie</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <link rel="stylesheet" href="/screen.css" type="text/css" media="screen"/> <script src="/lib/js/archie.js" type="text/javascript"></script> </head> <body> ... ... //included php starts here <form action="/lib/course.php" method="post"> <fieldset> <div id="addFileLocation"></div> <a href="#" onClick="addFile()">+ add file</a> <input type="hidden" id="addFileCount" value="0"/> </fieldset> </form> //ends here ... ... </body> </html> and the js: <script type="text/javascript"> //Dynamically add form fields //add file browser function addFile() { var location = document.getElementById('addFileLocation'); var num = document.getElementById('addFileCount'); var newnum = (document.getElementById('addFileCount').value -1)+ 2; num.value = newnum; var newname = 'addFile_'+newnum; var newelement = document.createElement('input'); newelement.setAttribute('name',newname); newelement.setAttribute('type','file'); location.appendChild(newelement); } </script>

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• Multi-account sync with Dropbox API

  - by Dan

  I'm trying to create a web app that lets users share files with each other through Dropbox. At the moment, Dropbox handles all the sharing, and there's one central Dropbox account running on the web server that shares the folder with the people who want it. I'm trying to change it so people don't have to accept a new folder invitation each time. I'd like to have them authorize my app to access an app folder in their Dropbox account, and all their shared folders would go inside there. Any changes they make would get noticed by the app on the server and synced to everyone else's folders. There's a couple things I'm having trouble figuring out to make this work: Do I need to make repeated calls to /delta for every account? I can't think how else I'd do this, but that sounds like it would quickly turn into thousands of requests a minute just polling for updates. When someone adds a file, do I have to upload it once for each account? That seems like a huge waste of bandwidth. I've looked into using /copy_ref, which I think would add a file to another user's account without my app ever touching it, but my app's web interface also allows users to upload files directly to my server, which would then need to be synced with everyone else's folders. That file isn't on Dropbox's servers yet, so /copy_ref obviously wouldn't work. For a little extra context, my app is written in node.js, and I've been playing with this library to interface with Dropbox, which uses their REST API.

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• wscript.shell running file with space in path with PHP

  - by ermac2014

  I was trying to use wscript.shell through COM objects with php to pass some cmd commands to cURL library (the DOS version). here is what I use to perform this task: function windExec($cmd,$mode=''){ // Setup the command to run from "run" $cmdline = "cmd /C $cmd"; // set-up the output and mode if ($mode=='FG'){ $outputfile = uniqid(time()) . ".txt"; $cmdline .= " > $outputfile"; $m = true; } else $m = false; // Make a new instance of the COM object $WshShell = new COM("WScript.Shell"); // Make the command window but dont show it. $oExec = $WshShell->Run($cmdline, 0, $m); if ($outputfile){ // Read the tmp file. $retStr = file_get_contents($outputfile); // Delete the temp_file. unlink($outputfile); } else $retStr = ""; return $retStr; } now when I run this function like: windExec("\"C:/Documents and Settings/ermac/Desktop/my project/curl\" http://www.google.com/", 'FG'); curl doesn't run because there is a problem with the path. but when I remove the spaces from the path it works great. windExec("\"C:/curl\" http://www.google.com/", 'FG'); so my question is how can I escape these spaces in wscript.shell commands? is there anyway I can fix this? thanks in advance :)

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• How can I suppress the vertical gridlines in a ggplot2 plot while retaining the x-axis labels?

  - by Tarek

  This is a follow-on from this question, in which I was trying to suppress the vertical gridlines. The solution, as provided by learnr, was to add scale_x_continuous(breaks = NA), but this had the side effect of also suppressing the x-axis labels, as well. I am totally happy to write the labels back in by hand, but it's not clear to me how to figure out where the labels should go. The other option is to suppress all gridlines (using opts( panel.grid.major = theme_blank()) or some such) and then drawing back in just the major horizontal gridlines. Again, the problem here is how to figure out what the breaks are in the plot to supply to geom_hline(). So, essentially, my options are: Suppress vertical gridlines and x-axis labels (using scale_x_continuous(breaks = NA) ) and add the x-axis labels back in. Suppress all gridlines (using opts( panel.grid.major = theme_blank()) ) and add the major horizontal gridlines back in using geom_hline(). Here are the two options: library(ggplot2) data <- data.frame(x = 1:10, y = c(3,5,2,5,6,2,7,6,5,4)) # suppressing vertical gridlines and x-axis labels # need to re-draw x-axis labels ggplot(data, aes(x, y)) + geom_bar(stat = 'identity') + scale_x_continuous(breaks = NA) + opts( panel.grid.major = theme_line(size = 0.5, colour = '#1391FF'), panel.grid.minor = theme_blank(), panel.background = theme_blank(), axis.ticks = theme_blank() ) # suppressing all gridlines # need to re-draw horizontal gridlines, probably with geom_hbar() ggplot(data, aes(x, y)) + geom_bar(stat = 'identity') + scale_x_continuous(breaks = NA) + opts( panel.grid.major = theme_blank(), panel.grid.minor = theme_blank(), panel.background = theme_blank(), axis.ticks = theme_blank() )

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• Java SSH2 libraries in depth: Trilead/Ganymed/Orion [/other?]

  - by Bernd Haug

  I have been searching for a pure Java SSH library to use for a project. The single most important needed feature is that it has to be able to work with command-line git, but remote-controlling command-line tools is also important. A pretty common choice, e.g. used in the IntelliJ IDEA git integration (which works very well), seems to be Trilead SSH2. Looking at their website, it's not being maintained any more. Trilead seems to have been a fork of Ganymed SSH2, which was a ETH Zurich project that didn't see releases for a while, but had a recent release by its new owner, Christian Plattner. There is another actively maintained fork from that code base, Orion SSH, that saw an even more recent release, but which seems to get mentioned online much less than the other 2 forks. Has anybody here worked with any of (or, if possible, both) of Ganymed and Orion and could kindly describe the development experience with either/both? Accuracy of documentation [existence of documentation?], stability, buggyness... - all of these would be highly interesting to me. Performance is not so important for my current project. If there is another pure-Java SSH implementation that should be used instead, please feel free to mention it, but please don't just mention a name...describe your judgment from actual experience. Sorry if this question may seem a bit "do my homework"-y, but I've really searched for reviews. Everything out there seems to be either a listing of implementations or short "use this! it's great!" snippets.

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• In browser trusted application Silverlight 5

  - by Philippe

  With the new Silverlight 5, we can now have a In-Browser elevated-trust application. However, I'm experiencing some problems to deploy the application. When I am testing the application from Visual Studio, everything works fine because it automatically gives every right if the website is hosted on the local machine (localhost, 127.0.0.1). I saw on MSDN that I have to follow 3 steps to make it work on any website: Signed the XAP - I did it following the Microsoft tutorial Install the Trusted publishers certificate store - I did it too following the Microsoft Tutorial Adding a Registry key with the value : AllowElevatedTrustAppsInBrowser. The third step is the one I am the most unsure about. Do we need to add this registry key on the local machine or on the server ? Is there any automatic function in silverlight to add this key or its better to make a batchfile? Even with those 3 steps, the application is still not working when called from another url than localhost. Does anybody has successfully implemented a In-browser elevated-trust application? Do you see what I'm doing wrong? Thank you very much! Philippe, Sources: - http://msdn.microsoft.com/en-us/library/gg192793(v=VS.96).aspx - http://pitorque.de/MisterGoodcat/post/Silverlight-5-Tidbits-Trusted-applications.aspx

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• Installing Sphinx on App Engine - possible?

  - by Pekka

  Following up on my last year's question on documentation, I now want to get started and try out Python-based Sphinx for putting together the developer documentation for a PHP CMS I've been working on. Instead of setting up Python locally on my workstation, I would like to run it on a publicly accessible web server from the start. All the web hosting packages I have access to run on the LAMP stack, and I'm reluctant to buy Python-based hosting. I am very interested in the Google App Engine, the free quotas they provide will do for me a hundred times over, and even if not, their pricing looks very reasonable. Now I have zero knowledge of Python - getting Sphinx to work would be my first contact with it - and very little time. As far as I understand, the platform and python libraries the App Engine provides are very compatible to a standard Python library but not identical. So my question is: Can Sphinx run on App Engine at all? Is installing Sphinx on the App Engine as straightforward as if I would install it on top of a normal Python installation? Or will the App Engine's environment require tweaking of the source code that I can't perform in reasonable time with my current level of Python? Should I be installing Sphinx on a local server and a "normal" Python stack instead first? Does anybody know any helpful How-to's, tutorials or other resources for this?

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• Determining the color of a pixel in a bitmap using C# in a WPF app

  - by DanM

  The only way I found so far is System.Drawing.Bitmap.GetPixel(), but Microsoft has warnings for System.Drawing that are making me wonder if this is the "old way" to do it. Are there any alternatives? Here's what Microsoft says about the System.Drawing namespace. I also noticed that the System.Drawing assembly was not automatically added to the references when I created a new WPF project. System.Drawing Namespace The System.Drawing namespace provides access to GDI+ basic graphics functionality. More advanced functionality is provided in the System.Drawing.Drawing2D, System.Drawing.Imaging, and System.Drawing.Text namespaces. The Graphics class provides methods for drawing to the display device. Classes such as Rectangle and Point encapsulate GDI+ primitives. The Pen class is used to draw lines and curves, while classes derived from the abstract class Brush are used to fill the interiors of shapes. Caution Classes within the System.Drawing namespace are not supported for use within a Windows or ASP.NET service. Attempting to use these classes from within one of these application types may produce unexpected problems, such as diminished service performance and run-time exceptions. - http://msdn.microsoft.com/en-us/library/system.drawing.aspx

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• Can I use pdb files to step through a 3rd party assembly?

  - by Pure.Krome

  Hi folks, my friend has made a really helpful class library which I use all the time. I usually use Reflector to see what his code does. What I really wanted to do was to step through his code while I'm debugging. So he gave me his .pdb file. Foo.dll (release configuration, compile) Foo.pdb Now, I'm not sure how I can get it to auto break into his code when it throws an exception (his code, at various points, thorws exceptions .. like A first chance exception of type 'System.Web.HttpException' occurred in Foo.dll ... Can I do this? Do i need to setup something with the Symbol Server settings in Visual Studio ? Do i need to get the dll compiled into Debug Configuration and be passed the .dll and .pdb files? Or (and i'm really afraid of this one) .. do i need to have both the .dll, .pdb AND his source code ... I also had a look at this previous SO question, but it sorta didn't help (but proof I've tried to search before asking a question). Can someone help me please?

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• ArrayList.Sort should be a stable sort with an IComparer but is not?

  - by Kaleb Pederson

  A stable sort is a sort that maintains the relative ordering of elements with the same value. The docs on ArrayList.Sort say that when an IComparer is provided the sort is stable: If comparer is set to null, this method performs a comparison sort (also called an unstable sort); that is, if two elements are equal, their order might not be preserved. In contrast, a stable sort preserves the order of elements that are equal. To perform a stable sort, you must implement a custom IComparer interface. Unless I'm missing something, the following testcase shows that ArrayList.Sort is not using a stable sort: internal class DisplayOrdered { public int ID { get; set; } public int DisplayOrder { get; set; } public override string ToString() { return string.Format("ID: {0}, DisplayOrder: {1}", ID, DisplayOrder); } } internal class DisplayOrderedComparer : IComparer { public int Compare(object x, object y) { return ((DisplayOrdered)x).DisplayOrder - ((DisplayOrdered)y).DisplayOrder; } } [TestFixture] public class ArrayListStableSortTest { [Test] public void TestWeblinkCallArrayListIsSortedUsingStableSort() { var call1 = new DisplayOrdered {ID = 1, DisplayOrder = 0}; var call2 = new DisplayOrdered {ID = 2, DisplayOrder = 0}; var call3 = new DisplayOrdered {ID = 3, DisplayOrder = 2}; var list = new ArrayList {call1, call2, call3}; list.Sort(new DisplayOrderedComparer()); // expected order (by ID): 1, 2, 3 (because the DisplayOrder // is equal for ID's 1 and 2, their ordering should be // maintained for a stable sort.) Assert.AreEqual(call1, list[0]); // Actual: ID=2 ** FAILS Assert.AreEqual(call2, list[1]); // Actual: ID=1 Assert.AreEqual(call3, list[2]); // Actual: ID=3 } } Am I missing something? If not, would this be a documentation bug or a library bug? Apparently using an OrderBy in Linq gives a stable sort.

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• CentOS: make python 2.6 see django

  - by NP

  In a harrowing attempt to get mod_wsgi to run on CentOS 5.4, I've added python 2.6 as an optional library following the instructions here. The configuration seems fine except that when trying to ping the server the Apache log prints this error: mod_wsgi (pid=20033, process='otalo', application='127.0.0.1|'): Loading WSGI script '...django.wsgi'. [Sat Mar 27 16:11:45 2010] [error] [client 171.66.52.218] mod_wsgi (pid=20033): Target WSGI script '...django.wsgi' cannot be loaded as Python module. [Sat Mar 27 16:11:45 2010] [error] [client 171.66.52.218] mod_wsgi (pid=20033): Exception occurred processing WSGI script '...django.wsgi'. [Sat Mar 27 16:11:45 2010] [error] [client 171.66.52.218] Traceback (most recent call last): [Sat Mar 27 16:11:45 2010] [error] [client 171.66.52.218] File "...django.wsgi", line 8, in [Sat Mar 27 16:11:45 2010] [error] [client 171.66.52.218] import django.core.handlers.wsgi [Sat Mar 27 16:11:45 2010] [error] [client 171.66.52.218] ImportError: No module named django.core.handlers.wsgi when I go to my python2.6 install's command line and try 'import django', the module is not found (ImportError). However, my default python 2.4 installation (still working fine) is able to import successfully. How do I point python 2.6 to django? Thanks in advance.

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• Truncate portions of a string to limit the whole string's length in Ruby

  - by Horace Loeb

  Suppose you want to generate dynamic page titles that look like this: "It was all a dream, I used to read word up magazine" from "Juicy" by The Notorious B.I.G I.e., "LYRICS" from "SONG_NAME" by ARTIST However, your title can only be 69 characters total and this template will sometimes generate titles that are longer. One strategy for solving this problem is to truncate the entire string to 69 characters. However, a better approach is to truncate the less important parts of the string first. I.e., your algorithm might look something like this: Truncate the lyrics until the entire string is <= 69 characters If you still need to truncate, truncate the artist name until the entire string is <= 69 characters If you still need to truncate, truncate the song name until the entire string is <= 69 characters If all else fails, truncate the entire string to 69 characters Ideally the algorithm would also limit the amount each part of the string could be truncated. E.g., step 1 would really be "Truncate the lyrics to a minimum of 10 characters until the entire string is <= 69 characters" Since this is such a common situation, I was wondering if someone has a library or code snippet that can take care of it.

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• generating and unmarshalling java classes while unmarshalling input contains a DTD

  - by Hans Westerbeek

  Hi, For a Spring-based project, I have the following situation to solve: I have XML files coming in whose contents I will have to parse at runtime. Those XML files come with a DTD reference. I need to generate the classes that the unmarshaller churns out using the right at build time, using the Maven2 plugin for the unmarshalling library of choice. This is also not very hard to do, once I have generated an XSD from the DTD. I want to use spring-oxm's UnMarshaller interface to do the unmarshalling at runtime. This I understand how to do. The xml files come in with a DTD reference, and all unmarshalling libraries out there want to do unmarshalling based on an XSD. Now, as described in the castor documentation, I can convert the DTD to an XSD and keep it on the classpath. However, when an actual XML file comes into the system it will still have that DTD reference at the top, and there's nothing I can really do about that (except for string replacing which feels hacky in this case). Will this cause the unmarshaller, like Castor to fail? Am I right in suspecting that this DTD reference will cause the unmarshalling to fail? Could I do pure DTD-based unmarshalling? Or can this somehow be prevented by providing detailed configuration to the unmarshaller? Until now, I have tried castor, xmlbeans and xstream. Which would fit my purposes best? Has anyone else been in this situation? Did you also end up just doing manual DOM or SAX parsing?

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• Java many to many association map

  - by Raphael Jolivet

  Hi, I have to classes, ClassA and ClassB and a "many to many" AssociationClass. I want to use a structure to hold the associations between A and B such as I can know, for each instance of A or B, which are their counterparts. I thought of using a Hashmap, with pair keys: Hasmap<Pair<ClassA, ClassB>, AssociationClass> associations; This way, I can add and remove an association between two instances of ClassA and ClassB, and I can query a relation for two given instances. However, I miss the feature of getting all associations defined for a given instance of ClassA or ClassB. I could do it by brute force and loop over all keys of the map to search for associations between a given instance, but this is inefficient and not elegant. Do you know of any data structure / free library that enables this ? I don't want to reinvent the wheel. Thanks in advance for your help, Raphael NB: This is not a "database" question. These objects are pure POJO used for live computation, I don't need persistence stuff.

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• python: help defining/installing simple script to setup machine-specific information

  - by Jason S

  (This is related to scons but I think most of the following should be fairly general to python) I would like to define a python file/library that I put in a Well-Known Place somewhere on my computer that I can use to define machine-specific paths, and was looking for help on how to do this well, since I'm a beginner to Python & really only use it for my scons work. scons uses a SConstruct file which can execute python code. What I would like to do is something like this: My SConstruct file would contain this at the beginning: defaultEnv = JJJJJ.getMachineSpecificPaths() or (do both of these syntaxes work?) import JJJJJ defaultEnv = getMachineSpecificPaths() I define a JJJJJ.py file somewhere installed in the python dir which contains the following def getMachineSpecificPaths(): ... does something here, I don't know what ... that reads a file machine-specific-paths.txt (maybe it has the code Ross Rogers mentioned in my other question) located in the same directory as JJJJJ.py containing the following: machine-specific-paths.txt TI_C28_ROOT C:/appl/ti/ccs/?4.1.1/ccsv4/tools/co?mpiler/c2000 JSDB c:/bin/jsdb/jsdb.exe PYTHON_PATH c:/appl/python/2.6.4 The thing is, I don't really know much about the conventions in Python about where you put system-wide libraries and files. This is probably really simple to get right but I don't know how.

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• How do I write unescaped XML outside of a CDATA

  - by kazanaki

  Hello I am trying to write XML data using Stax where the content itself is HTML If I try xtw.writeStartElement("contents"); xtw.writeCharacters("<b>here</b>"); xtw.writeEndElement(); I get this <contents>&lt;b&gt;here&lt;/b&gt;</contents> Then I notice the CDATA method and change my code to: xtw.writeStartElement("contents"); xtw.writeCData("<b>here</b>"); xtw.writeEndElement(); and this time the result is <contents><![CDATA[<b>here</b>]]></contents> which is still not good. What I really want is <contents><b>here</b></contents> So is there an XML API/Library that allows me to write raw text without being in a CDATA section? So far I have looked at Stax and JDom and they do not seem to offer this. In the end I might resort to good old StringBuilder but this would not be elegant. Update I agree mostly with the answers so far. However instead of <b>here</b> I could have a 1MB HTML document that I want to embed in a bigger XML document. What you suggest means that I have to parse this HTML document in order to understand its structure. I would like to avoid this if possible.

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• WYSIWYG in Doxygen

  - by Adam Shiemke

  I'm working on a fairly large project written in C. The idea was to build a library of modular blocks that can be reused across several platforms. Each module is assocaited with a word document in .docx format (huge pain to diff-merge). In these docs, an interface section is specified, listing datatypes and publicly accessable functions. These were often inconsistant with the actual implementation in code, and wading through all this documentation was a pain. I've been working to switch to doxygen to simplify document managemnet. I haven't found a good way to embed the previously written documentation into the doxygen output. I've copy-pasted them into sections and used modules to group the sources together, but the document sections look ugly in the comments (the output is pretty) and since doxygen takes a while to parse through our code (about 30 mins), validating formatting is a pain. Is there some way to WYSIWIG large blocks of documentation into doxygen? I feel this would improve the number of people documenting their code, and the quality of that documentation. I considered linking to html, but that splits out the documentation. I also considered putting them inline in html, but this also seems like a pain and would mean everyone needs a WYSIWIG HTML edditor (or some html skillz). Any ideas on how to make things easier and prettier? Thanks loads.

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