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  • svnlook always returns an error and no output

    - by Pierre-Alain Vigeant
    I'm running this small C# test program launched from a pre-commit batch file private static int Test(string[] args) { var processStartInfo = new ProcessStartInfo { FileName = "svnlook.exe", UseShellExecute = false, ErrorDialog = false, CreateNoWindow = true, RedirectStandardOutput = true, RedirectStandardError = true, Arguments = "help" }; using (var svnlook = Process.Start(processStartInfo)) { string output = svnlook.StandardOutput.ReadToEnd(); svnlook.WaitForExit(); Console.Error.WriteLine("svnlook exited with error 0x{0}.", svnlook.ExitCode.ToString("X")); Console.Error.WriteLine("Current output is: {0}", string.IsNullOrEmpty(output) ? "empty" : output); return 1; } } I am deliberately calling svnlook help and forcing an error so I can see what is going on when committing. When this program run, SVN displays svnlook exited with error 0xC0000135. Current output is: empty I looked up the error 0xC0000135 and it mean App failed to initialize properly although it wasn't specific to svnhook. Why is svnlook help not returning anything? Does it fail when executed through another process?

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  • Confusion regarding laziness

    - by Abhinav Kaushik
    I have a function myLength = foldl (\ x _ -> x + 1) 0 which fails with stack overflow with input around 10^6 elements (myLength [1..1000000] fails). I believe that is due to the thunk build up since when I replace foldl with foldl', it works. So far so good. But now I have another function to reverse a list : myReverse = foldl (\ acc x -> x : acc) [] which uses the lazy version foldl (instead of foldl') When I do myLength . myReverse $ [1.1000000]. This time it works fine. I fail to understand why foldl works for the later case and not for former?

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  • Object tree navigation language in Java

    - by lewap
    In the system which I'm currently developing I often have to navigate an object tree and based on its state and values take actions. In normal Java this results in tedious for loops, if statements etc... Are there alternative ways to achieve tree navigation, similar to XPath for XML? I know there is JXPath and OGNL, but do you know any other libraries for such purpose? Do you know any libraries which generate bytecodes for specific tree navigation expressions to make the processing as fast as Java native fors and ifs?

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  • Using Mapped Memory Files in C# to store reference types

    - by Khash
    I need to store a dictionary to a file as fast as possible. Both key and value are objects and not guaranteed to be marked as Serializable. Also I prefer a method faster than serializing thousands of objects. So I looked into Mapped Memory Files support in .NET 4. However, it seems MemoryMappedViewAccessor only allows storage of structs and not reference types. Is there a way of storing the memory used by a reference type of a file and reconstructing the object from that blob of memory (without binary serialization)?

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  • How does 64 bit code work on OS-X 10.5?

    - by philcolbourn
    I initially thought that 64 bit instructions would not work on OS-X 10.5. I wrote a little test program and compiled it with GCC -m64. I used long long for my 64 bit integers. The assembly instructions used look like they are 64 bit. eg. imultq and movq 8(%rbp),%rax. I seems to work. I am only using printf to display the 64 bit values using %lld. Is this the expected behaviour? Are there any gotcha's that would cause this to fail? Am I allowed to ask multiple questions in a question? Does this work on other OS's?

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  • Is there a service for monitoring secured WCF endpoints in the same way that HTTP monitoring service

    - by Ryan ONeill
    Hi all, A service I have in WCF occasionally goes down due a problem with a COM component. While I am troubleshooting I would like to setup another host to make regular calls to this service to monitor availability. It is slightly more complicated that a simple HTTP call though as the service is secured by SSL and WCF authentication (username / password). I'd also like to be able to parse successful calls to see if they return warning / fail states from my code. Would you recommend any monitoring providers for this or is it beyond the simple monitoring they normally provide? Regards Ryan

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  • Good input validation loop using cin - C++

    - by Alex
    Hi there, I'm in my second OOP class, and my first class was taught in C#, so I'm new to C++ and currently I am practicing input validation using cin. So here's my question: Is this loop I constructed a pretty good way of validating input? Or is there a more common/accepted way of doing it? Thanks! Code: int taxableIncome; int error; // input validation loop do { error = 0; cout << "Please enter in your taxable income: "; cin >> taxableIncome; if (cin.fail()) { cout << "Please enter a valid integer" << endl; error = 1; cin.clear(); cin.ignore(80, '\n'); } }while(error == 1);

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  • Invert order of HTML elements

    - by meo
    I have the following configuration: <div><div id='box1'>&nbsp;</div><div id='box2'>&nbsp;</div><div id='box3'>&nbsp;</div><div id='box4'>&nbsp;</div></div> what i need to do is to invert the order of the divs <div><div id='box4'>&nbsp;</div><div id='box3'>&nbsp;</div><div id='box2'>&nbsp;</div><div id='box1'>&nbsp;</div></div> is there a fast way to do this with jQuery without cloning, removing and replacing the items?

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  • jquery value of textarea

    - by Elliott
    Hi, I have the code below, which sends the value of the textarea and either gets a fail or Successful response, for now I just check if it says "hello". function postdata() { $.ajax({ type: "POST", dataType: "text", url: "makepost.php", data: "post_text=" + $("#post_text").val(), cache: false, success: function(reply_text) { if (reply_text.indexOf("Successful") >= 0) { alert("Post Made"); } else { alert(reply_text); } } }); } <textarea rows="3" cols="25" id="post_text" ></textarea><br /> <input type="submit" id="post_bttn" value="Post" onclick="postdata(); return false;"> I have also tested just echo'ing out the value of the textarea, and all the time it is jus blank. Although in firebug it shows that I have sent that text. Any ideas? Thanks :)

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  • Use SendMessage in C# to perform a CTRL-C operation on a given handle

    - by gtaborga
    Hello everyone, I'm trying to perform a (CTRL-C) copy on a window. I've already managed to do this using SendInput but unfortunately that could fail if the window doesn't have focus. I'm trying to perform the same (CTRL-C) operation using SendMessage in C#. So far I haven't been successful in getting the WPARAM and LPARAM combination for this to work. I have also tried using SendMessage with the WM_COPY message but that didn't work for my needs. Please if anyone has done this before successfully using SendMessage I would greatly appreciate your help.

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  • Is there a config option in PHP to prevent undefined constants from being interpreted as strings?

    - by mrbinky3000
    This is from the php manual: http://us.php.net/manual/en/language.constants.syntax.php If you use an undefined constant, PHP assumes that you mean the name of the constant itself, just as if you called it as a string (CONSTANT vs "CONSTANT"). An error of level E_NOTICE will be issued when this happens. I really don't like this behavior. If I have failed to define a required constant, I would rather the script fail so that I am forced define it. Is there any way to force PHP to crash the script if it tries to use an undefined constant? For example. Both of these scripts do the same thing. <?php define('DEBUG',1); if (DEBUG) echo('Yo!'); ?> and <?php if(DEBUG) echo('Yo!'); ?> I would rather the second script DIE and declare that it tried to use an undefined constant DEBUG.

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  • What is the best API/framework/platform you ever worked with?

    - by Yuval A
    Most programming is done on an existing framework or platform, and using various APIs which make your programming job much more convenient. It can either be a superbly designed set of APIs, or a nice framework which you managed to get really cool things done really fast. All answers should give concrete examples of why that framework is so awesome, or examples of cool stuff you did with it. What existing framework really inspired you to do some awesome work? I know this is subjective, but I think we can get some cool ideas from this question. Please be easy on the "close" link :) Also - commun-ikified in advance.

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  • WCF DataContract with readonly properties

    - by Asaf R
    I'm trying to return a complex type from a service method in WCF. I'm using C# and .NET 4. This complex type is meant to be invariant (the same way .net strings are). Furthermore, the service only returns it and never recieves it as an argument. If I try to define only getters on properties I get a run time error. I guess this is because no setters causes serialization to fail. Still, I think this type should be invariant. Example: [DataContract] class A { [DataMember] int ReadOnlyProperty {get; private set;} } The service fails to load due to a problem with serialization. Is there a way to make readonly properties on a WCF DataContract? Perhaps by replacing the serializer? If so, how? If not, what would you suggest for this problem? Thanks, Asaf

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  • XSD data set with Oracle database

    - by Ed Woodcock
    Hi folks, I'm having a major issue with an XSD dataset mapping thingy that I'm using within my current project. We are using XSDs for some data abstraction (it's quicker and debatably more maintainable that using Parameterised SQL or a StoredProc), and on my machine (running in the VS development environment) thy're working fine. However, on the Pre-production server we use for our testing, the XSDs are not working correctly: some method calls will fail with the following error: System.ArgumentException: Value does not fall within the expected range. at Oracle.DataAccess.Client.OracleParameter.set_DbType(DbType value) Has anyone ever encountered this issue before? The methods being called are simple select statements using 1-3 parameters, and as I said before they work fine on my machine.

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  • SQL - How can I apply a "semi-unique" constraint?

    - by Erin Drummond
    Hi, I have a (simplified) table consisting of three columns: id INT PRIMARY KEY NOT NULL AUTO_INCREMENT, foreignID INT NOT NULL, name VARCHAR NOT NULL Basically, I would like to add a constraint (at the database level rather than at the application level) where it only possible for one unique 'name' to exist per foreignID. For example, given the data (id, foreignid, name): 1,1,Name1 2,1,Name2 3,1,Name3 4,2,Name1 5,2,Name2 I want the constraint to fail if the user tries to insert another 'Name3' under foreignId 1, but succeed if the user tries to insert 'Name3' under foreignId 2. For this reason I cannot simply make the whole column UNIQUE. I am having difficulty coming up with a SQL expression to achieve this, can anybody help me? Thanks

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  • Set tag and hidden for objects on custom UITableViewCell

    - by Rob
    I am re-using Apple's AdvancedTableViewCells example to create a custom, fast-scrolling tableview. Specifically, I am using their CompositeSubviewBasedApplicationCell method which draws the content on the tableviewcell with drawRect Everything works, but how do you hide a label or set the tag for a label or image using their method? Doing it this way is pretty new to me (without IB), so I apologize ahead of time if it's something easy. The code that sets the cell content is: - (void)drawRect:(CGRect)rect { [_cell.animalIcon drawAtPoint:CGPointMake(5.0, 5.0)]; [_cell.animalName drawAtPoint:CGPointMake(93.0, 25.0)]; _highlighted ? [[UIColor whiteColor] set] : [[UIColor colorWithWhite:0.23 alpha:1.0] set]; [_cell.animalDescription drawAtPoint:CGPointMake(100.0, 54.0) withFont:[UIFont boldSystemFontOfSize:13.0]]; [_cell.animalNameString drawAtPoint:CGPointMake(93.0, 5.0) withFont:[UIFont boldSystemFontOfSize:13.0]]; }

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  • Attribute class not calling constructor

    - by Coppermill
    I have created an Attribute, call MyAttribute, which is performing some security and for some reason the Constructor is not being fired, any reason why? public class Driver { // Entry point of the program public static void Main(string[] Args) { Console.WriteLine(SayHello1("Hello to Me 1")); Console.WriteLine(SayHello2("Hello to Me 2")); Console.ReadLine(); } [MyAttribute("hello")] public static string SayHello1(string str) { return str; } [MyAttribute("Wrong Key, should fail")] public static string SayHello2(string str) { return str; } } [AttributeUsage(AttributeTargets.Method)] public class MyAttribute : Attribute { public MyAttribute(string VRegKey) { if (VRegKey == "hello") { Console.WriteLine("Aha! You're Registered"); } else { throw new Exception("Oho! You're not Registered"); }; } }

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  • How to extract valid email from larger string in Scala

    - by luigi-prog
    My scala version 2.7.7 Im trying to extract an email adress from a larger string. the string itself follows no format. the code i've got: import scala.util.matching.Regex import scala.util.matching._ val Reg = """\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b""".r "yo my name is joe : [email protected]" match { case Reg(e) => println("match: " + e) case _ => println("fail") } the Regex passes in RegExBuilder but does not pass for scala. Also if there is another way to do this without regex that would be fine also. Thanks!

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  • Edit and Create view using EditCreate.ascx partial in ASP.NET MVC

    - by mare
    If you look at the NerdDinner example of creating and editing dinners then you see they use a partial (ViewUserControl or ASCX) DinnerForm to put the functionality of creating and editing dinners into one file because it is essential the same and they use it using RenderPartial("DinnerForm"). This approach seems fine for me but I've run into a problem where you have to add additonal route values or html properties to the Form tag. This picks up the current action and controller automatically: <% using (Html.BeginForm()) { %> However, if I use another BeginForm() overload which allows to pass in enctype or any other attribute I have to do it like this: <% using ("Create", "Section", new { modal = true }, FormMethod.Post, new { enctype = "multipart/form-data" })) and as you can see we lose the ability to automatically detect in which View we are calling RenderPartial("OurCreateEditFormPartial"). We can't have hardcoded values in there because in Edit View this postback will fail or won't postback to the right controller action. What should I do in this case?

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  • aio_write on linux with rtkaio is sometimes long

    - by Drakosha
    I'm using async io on linux with rtkaio library. In my tests everything works perfectly, but, in my real application i see that aio_write which is supposed to return very fast, is very slow. It can take more than 100 milis to write a 128KB to a O_DIRECT padded file. Both my test and the application use same I/O size, i check on the same file system (GFS). I added counting and i see that there are about 50% of async io operations that are short (shorter then 2 milis) and 50% that are long (longer than 2 milis). I also checked that the test and the application both use the same rtkaio library. I'm pretty lost, anyone any ideas where should i look? Another my related question: http://stackoverflow.com/questions/1799537/proc-sys-fs-aio-nr-is-never-higher-than-1024-aio-on-linux

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  • Browser for cross-site-script testing (for testing Mozilla Add-On)

    - by Anthony
    I am working on a Firefox extension that will involve ajax calls to domains that would normally fail due to the same-origin policy set by Firefox (and most modern browsers). I was wondering if there is a way to either turn off the same-origin restriction (in about:config, perhaps) or if there was a standard lite-browser that developers turn to for this. I really would like to avoid using any blackhat tools, if possible. Not because I'm against them, I just don't want to add another learning curve to the process. I can use curl in PHP to confirm that the requests work, but I want to get started on writing the js that the addon will actually use, so I need a client that will execute js. I also tried spidermonkey, but since I'm doing the ajax with jquery, it threw a fit at all of the browser-based default variables. So, short version: is there a reliable browser/client for cross site scripting that isn't primarily a hacker app? Or can I just turn off same-domain policy in Firefox?

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  • How to use ShowHelp with Vista's virtualized "Program Files" folder

    - by fmunkert
    Hi, we have the problem that ShowHelp seems to fail under Vista and Windows Server 2008 if the path name of the help file contains a virtualized folder name. For example, under the German version Vista, "Program Files" is called "Programme". The call System.Windows.Forms.Help.ShowHelp(null, @"C:\Programme\Microsoft Visual Studio 9.0\Common7\Tools\spyxx.chm"); fails, wheras System.Windows.Forms.Help.ShowHelp(null, @"C:\Program Files\Microsoft Visual Studio 9.0\Common7\Tools\spyxx.chm"); succeeds. If there any way in C# to convert a file path into its non-virtualized counterpart? Or is there any other solution to that problem? Regards

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  • 2D Spaceship movement math

    - by YAS
    Hi, I'm new here. I'm trying to make a top-down spaceship game and I want the movement to somewhat realistic. 360 degrees with inertia, gravity, etc. My problem is I can make the ship move 360 with inertia with no problem, but what I need to do is impose a limit for how fast the engines can go while not limiting other forces pushing/pulling the ship. So, if the engines speed is a maximum of 500 and the ship is going 1000 from a gravity well, the ship is not going to go 1500 when it's engines are on, but if is pointing away from the angle is going then it could slow down. For what it's worth, I'm using Construct (www.scirra.com), and all I need is the math of it. Thanks for any help, I'm going bald from trying to figure this out.

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  • Check if BigDecimal is integer value

    - by Adamski
    Can anyone recommend an efficient way of determining whether a BigDecimal is an integer value in the mathematical sense? At present I have the following code: private boolean isIntegerValue(BigDecimal bd) { boolean ret; try { bd.toBigIntegerExact(); ret = true; } catch (ArithmeticException ex) { ret = false; } return ret; } ... but would like to avoid the object creation overhead if necessary. Previously I was using bd.longValueExact() which would avoid creating an object if the BigDecimal was using its compact representation internally, but obviously would fail if the value was too big to fit into a long. Any help appreciated.

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  • SocketTimeOutException while creating socket, java

    - by Sunil Kumar Sahoo
    Hi All, I have created a sample java socket application. I used Socket s = new Socket(ip, port) Now it works fine. but when my internet connection is very slow that time after a long interval (even if sometimes after 2 minutes) i used to get SocketTimeOutException in that line. means it gives that error while creating socket. I want the exception should be handled properly means if internet connection is very slow then if that error occurs it happens very late now . I want if this type of error occurs then it should be caught very fast means the error should not come at such a delay interval of time rather it should come immediately. How to achieve this. Thanks Sunil Kumar Sahoo

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