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  • DataContractJsonSerializer produces list of hashes instead of hash

    - by Jacques
    I would expect a Dictionary object of the form: Dictionary<string,string> dict = new Dictionary<string,string>() {["blah", "bob"], ["blahagain", "bob"]}; to serialize into JSON in the form of: { "blah": "bob", "blahagain": "bob" } NOT [ { "key": "blah", "value": "bob" }, { "key": "blahagain", "value": "bob"}] What is the reason for what appears to be a monstrosity of a generic attempt at serializing collections? The DataContractJsonSerializer uses the ISerializable interface to produce this thing. It seems to me as though somebody has taken the XML output from ISerializable and mangled this thing out of it. Is there a way to override the default serialization used by .Net here? Could I just derive from Dictionary and override the Serialization methods? Posting to hear of any caveats or suggestions people might have.

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  • Java 1.4 to Java 6 migration

    - by joesatch
    Hi, I have some enterprise apps running on Java 1.4. They mostly invoke Stored Proces on DB, Parse XML files (Not too large files, at the most few megs), read/write from/to disk. We have a requirement where now we have to migrate these apps to Java 6(No code changes to be done at all). My questions: If I dont recompile my apps under Java 6 and just run them with it, will it work fine (I know they 'should'). But if somebody thinks other way round, could you kindly share your thoughts please? More important question is - Will it have any perfomance impact?. As in, App compiled on 1.4 and running on 1.6 vs App compiled and running on 1.6. Is 1.6 gonna do any bytecode optimization for the same old peace of code compared to 1.4? Many Thanks js

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  • utf8 codification problem C#, writing a tex file, and compiling with pdflatex

    - by voodoomsr
    Hi, i have the next code written in C#....it create a tex file using utf-8.....the problem is that appears that is not a real valid utf-8 file because, when i use pdflatex it doesn't recognize the characters with accents. Somebody knows a way to write a real UTF-8 file? When i use TexmakerX to create a utf8 file with the same latex code, pdflatex doesn't complaints, so the problem must be in the generation. FileInfo file = new FileInfo("hello.tex"); StreamWriter writer = new StreamWriter("hello.tex", false, Encoding.UTF8); writer.Write(@"\documentclass{article}" + "\n" + @"\usepackage[utf8]{inputenc}" + "\n" + @"\usepackage[spanish]{babel}" + "\n" + @"\usepackage{listings}" + "\n" + @"\usepackage{fancyvrb}" + "\n" + @"\begin{document}" + "\n" + @"\title{asd}" + "\n" + @"\maketitle" + "\n" + @"\section{canción}" + "\n" + @"canción" + "\n" + @"\end{document}"); writer.Close();

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  • plpgsql function to generate random readable strings

    - by Peter
    Hi I have written the following function but it's isn't returning anything when I run it. Can somebody help identify the issue? CREATE OR REPLACE FUNCTION GenerateReadableRandomString ( len INT ) RETURNS varchar AS $$ DECLARE validchars VARCHAR; randomstr VARCHAR; randint INT; i INT; BEGIN validchars := 'ABCEFHJKLMNPRTWXY3478'; i := 0; LOOP randint := ceil(random() * char_length(validchars)); randomstr := randomstr || substring(validchars from randint for 1); i := i + 1; EXIT WHEN i = len; END LOOP; RETURN randomstr; END; $$ LANGUAGE plpgsql;

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  • What does seem target in ANT

    - by Johannes
    Hello I am completly new to eclipse, liferay and ANT. I tried to set up a development environment and just finished the ext-anvironment (I also executed ant clean start). Now I've to execute "ant build-ext", following this tutorial: http://www.liferay.com/web/guest/community/wiki/-/wiki/Main/Setting%20up%20the%20Extension%20Environment D:\_liferay\ext>ant build-ext Buildfile: D:\_liferay\ext\build.xml But I receive the Message: BUILD FAILED Target "build-ext" does not exist in the project "ext". Can somebody tell me what I did wrong? Thanks in Advance Johannes

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  • Google App Engine (python): TemplateSyntaxError: 'for' statements with five words should end in 'rev

    - by Phil
    This is using the web app framework, not Django. The following template code is giving me an TemplateSyntaxError: 'for' statements with five words should end in 'reversed' error when I try to render a dictionary. I don't understand what's causing this error. Could somebody shed some light on it for me? {% for code, name in charts.items %} <option value="{{code}}">{{name}}</option> {% endfor %} I'm rendering it using the following: class GenerateChart(basewebview): def get(self): values = {"datepicker":True} values["charts"] = {"p3": "3D Pie Chart", "p": "Segmented Pied Chart"} self.render_page("generatechart.html", values) class basewebview(webapp.RequestHandler): ''' Base class for all webapp.RequestHandler type classes ''' def render_page(self, filename, template_values=dict()): filename = "%s/%s" % (_template_dir, filename) path = os.path.join(os.path.dirname(__file__), filename) self.response.out.write(template.render(path, template_values))

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  • How to use Windows login for single-sign-on and for Active Directory entries for Desktop Java applic

    - by Touko
    I'd like to have my desktop Java application to have single sign on related to Active Directory users. In two steps, I'd like to : Be sure that the particular user has logged in to Windows with some user entry. Check out some setup information for that user from the Active Directory With http://stackoverflow.com/questions/31394/java-programatic-way-to-determine-current-windows-user I can get the name of the current Windows user but can I rely to that? I think the System.getProperty("user.name") won't be secure enough? ("user.name" seems to be got from environment variables, so I can't rely on that, I think?) Question http://stackoverflow.com/questions/390150/authenticating-against-active-directory-with-java-on-linux provides me the authentication for given name+pass but I'd like to authenticate based on the Windows logon? For the Active Directory access, the LDAP would probably be the choise? I'm not totally sure if I'm asking the right questions but hopefully somebody has some ideas to forward me on.

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  • Why do these nested while loops not work?

    - by aliov
    I tried and tried and tried to get this code to work and kept coming up with zilch. So I decided to try it using "for loops" instead and it worked first try. Could somebody tell me why this code is no good? <?php $x = $y = 10; while ($x < 100) { while ($y < 100) { $num = $x * $y; $numstr = strval($num); if ($numstr == strrev($numstr)) { $pals[] = $numstr; } $y++; } $x++; } ?>

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  • posix pthreads in c

    - by Codenotguru
    Iam new to c programming and needs some help. long *taskids[NUM_THREADS]; for(t=0; t<NUM_THREADS; t++) { taskids[t] = (long *) malloc(sizeof(long)); *taskids[t] = t; printf("Creating thread %ld\n", t); rc = pthread_create(&threads[t], NULL, PrintHello, (void *) taskids[t]); ... } This code fragment demonstrates how to pass a simple integer to each thread. The calling thread uses a unique data structure for each thread, insuring that each thread's argument remains intact throughout the program. Iam not able to understand how this is happening can somebody explain it??

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  • Graphical Countdown in Jquery/Javascript/ASP.NET

    - by Eduard Schlechtinger
    Hi designers/developers, I am looking for a way of graphically showing a countdown. I am working for a large Hospital and have written an Ambulance page that shows ambulance arriving in a datagrid with the time of arriving at the hospital in minutes and seconds (plus other info). They have asked me for somehow visually representing the information, so it fits with there other visually appealing Emergency Department web application (e.g. progress bar or something better): 1) Can somebody show me (visually appealing) design examples on how this could be done 2) Are there solutions in .Net (ASP.net or JQuery or Javascript) since this is our preferred technology Thanks so much!

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  • C# threads - Posting messages between threads

    - by Harsha
    Hi All, I am working on a project which involves reusing as well as migrating some of the existing MFC code to C#. The current code in MFC, creates some threads and uses ::PostthreadeMessage() and ON_THREAD_MESSAGE(msg,func) for inter thread asynchronous communication through messages. ::PostthreadeMessage() - sends a message to a particular thread id. ON_THREAD_MESSAGE(msg,func) - calls the function(func) when a message(msg) is received. Since i am not much aware of the threading interfaces in C#, i tried to search for similar API's in C#, but was not able to find any. It would be great, if somebody can help me in finding the appropriate functions for this purpose in C# Thanks, Harsha

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  • Polygon triangulation

    - by Saurabh
    Hey, I am working on nesting of sheet metal parts and am implementing Minkowski Sums to find No Fit Polygons for nesting. The problem is I can give only convex sets as input to the code which calculates Minkowski sums for me. Hence I need to break a concave polygon, with holes into Convex sets. I am open to triangulation also, but I am looking for a working code on VC++ (6.0). I am slightly running short on time as my whole code is ready and just waiting for input in the form of convex sets. I would really appreciate if somebody with prior experience can help me in this. I have gone through other posts but did not find anything matching to this. I am a student of mechanical engineering and really dun have much idea about computer languages. All I can handle is compiling a code on VC++ and incorporate it with my existing code. Looking forward to responses!! Thanks Warm regards Saurabh India

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  • Ubuntu: What gcc to use when crosscompiling for the STM32 (Cortex-M3)?

    - by Johan
    Hi I'm trying to get started with the STM32 (Cortex-M3) and my plan is get this working from Ubuntu (9.04 / AMD64). To start with I got the Olimex stm32-h103 header board and the Olimex ARM-USB-OCD jtag, and on to of that I will probably use OpenOCD, gcc and Eclipse. But right now I'm looking into what version of gcc to use and how to setup that to be able to crosscompile the code. There seem to be some arm projects out there but I don't know what to start with, can somebody push me in the right direction? Thanks Johan Update: There seems almost to be what I want from codesourcery, but they seem to focus on IA32 and not AMD64. However in the supported devices I find the Cortex-M3 ARM EABI, ARM M-profile Simulator -mcpu=cortex-m3 -mthumb Update: There is a possibility to install IA32 on AMD64, so maybe the marked answer is obsolete already. Update: Found this link about crosscompile for the Cortex-M3. http://www.eluaproject.net/en_tc_cortex.html http://fanplastic.org/gcc-for-arm-eabi/

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  • How to use map/reduce to handle more than 10000 unique keys for grouping in MongoDB?

    - by Magnus Johansson
    I am using MongoDB v1.4 and the mongodb-csharp driver and I try to group on a data store that has more than 10000 keys, so I get this error: assertion: group() can't handle more than 10000 unique keys using c# code like this: Document query = new Document().Append("group", new Document() .Append("key", new Document().Append("myfieldname", true)) .Append("$reduce", new CodeWScope( "function(obj,prev) { prev.count++; }")) .Append("initial", new Document().Append("count", 0)) .Append("ns", "myitems")); I read that I should use map/reduce, but I can't figure out how. Can somebody please shed some light on how to use map/reduce? Or is there any other way to get around this limitation? Thanks.

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  • java generics covariance

    - by soocracy42
    I am having trouble understanding the following article: http://www.ibm.com/developerworks/java/library/j-jtp01255.html Under, Generics are not covariant the author states, Because ln is a List, adding a Float to it seems perfectly legal. But if ln were aliased with li, then it would break the type-safety promise implicit in the definition of li -- that it is a list of integers, which is why generic types cannot be covariant. I can't understand the part where it says "if ln were aliased with li". What does the author means by alias?(reference?). The code snippet above the quoted line seems to illustrate WHAT is illegal in java and not WHY. It would be very helpful to me if somebody could explain with an example. Thanks in advance.

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  • Use ISAPI filter to trace and time a WCF call?

    - by Andrew Burke
    I'm building a web application using WCF that will be consumed by other applications as a service. Our app will be installed on a farm of web services and load balanced for scalability purposes. Occasionally we run into problems specific to one web server and we'd like to be able to determine from the response which web server the request was processed by and possibly timing information as well. For example, this request was processed by WebServer01 and the request took 200ms to finish. The first solution that came to mind was to build an ISAPI filter to add an HTTP header that stores this information in the response. This strikes me as the kind of thing somebody must have done before. Is there a better way to do this or an off-the-shelf ISAPI filter that I can use for this? Thanks in advance

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  • Korn Shell code to send attachments with mailx and uuencode?

    - by Nano Taboada
    I need to attach a file with mailx but at the moment I'm not having a lot of success. Here's my code: subject="Something happened" to="[email protected]" body="Attachment Test" attachment=/path/to/somefile.csv uuencode $attachment | mailx -s "$subject" "$to" << EOF The message is ready to be sent with the following file or link attachments: somefile.csv Note: To protect against computer viruses, e-mail programs may prevent sending or receiving certain types of file attachments. Check your e-mail security settings to determine how attachments are handled. EOF Any feedback would be highly appreciated. Update I've added the attachment var to avoid having to use the path every time.

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  • Hex representation of Euro Symbol €

    - by Rahul
    Hi I was using XVI32 (Hex Editor) to get the hex representation of the Euro symbol and it gives me the value as 80. Another site: http://www.string-functions.com/string-hex.aspx does the same. I am not able to understand why the hex representation is 80 instead of 0x20AC. This 0X80 gives 128 in decimal and if I use Alt+0128 it actually produces the Euro symbol. Could somebody throw some light on what could be the logic behind this conversion from string to hex conversion ? Thanks

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  • MVVM View-First Approach How Change View

    - by CodeWeasel
    Hi everybody, Does anybody have an idea how to change screens (views) in a MVVM View-First-Approach (The view instantiates the ViewModel: DataContext="{Binding Source={StaticResource VMLocator}, Path=Find[EntranceViewModel]}" ) For example: In my MainWindow (Shell) I show a entrance view with a Button "GoToBeach". <Window> <DockPanel> <TextBox DockPanel.Dock="Top" Text="{Binding Title}" /> <view.EntranceView DockPanel.Dock="Top" /> </DockPanel> </Window> When the button is clicked I want to get rid of the "EntranceView" and show the "BeachView". I am really curious if somebody knows a way to keep the View-First Approach and change the screen (view) to the "BeachView". I know there are several ways to implement it in a ViewModel-First Approach, but that is not the question. Perhabs I missed something in my mvvm investigation and can't see the wood for the trees... otherwise i am hoping for a inspiring discussion.

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  • Can't get python.manage.py syncdb to work

    - by Diego
    I just created my first django app, initialized variables DATABASE_ENGINE and DATABASE_NAME in settings.py, but now when I run python manage.py syncdb, I get the following error Can somebody help? Does this have to do with having two python versions installed? I'm a django/python noob, please help. thanks!! my-computer:~/Django-1.1.1 mycomp$ python manage.py syncdb /Library/Frameworks/Python.framework/Versions/2.6/Resources/Python.app/Contents/MacOS/Python: can't open file 'manage.py': [Errno 2] No such file or directory my-computer:~/Django-1.1.1 mycomp$ export PATH=/Users/mycomp/bin:$PATH

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  • UI-Automation cmdlet not finding the control

    - by sc_ray
    Hi, I am trying to test a WPF application using the UI-Automation framework that MSFT provides. There were a few powershell scripts written that invoked the cmdlets created to manipulate the visual controls of the application. There is a DropDown within my application that has an entry 'DropDownEntry'. In my cmdlet, I am trying to do something as follows: AutomationElement getItem = DropDown.FindFirst(TreeScope.Descendants, new AndCondition( new PropertyCondition(AutomationElement.ControlTypeProperty,ControlType.ListItem), new PropertyCondition(AutomationElement.NameProperty, "DropDownEntry",PropertyConditionFlags.IgnoreCase))); The above given snippet returns 'null' upon execution which essentially means that the above given logic was unable to find my dropdown entry. Can somebody tell me why this might be happening? I checked the name of my control and the values. Everything seems to be in order. I am not sure why this would be happening. Any help would be much appreciated. Thanks

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  • Getting started with Windows Azure

    - by jonhobbs
    Hi All, I'm going to sound like a complete newbie here but here goes... I've just signed up for a Windows Azure account and was hoping to get a simple hello world aspx page up and running in a browser to see how it all works but I can't seem to find a simple guide to getting a very simple web application running. I've got as far as setting up a "service" and going onto the "deploy" page but it's asking me upload an "application package". I've looked on MSDN but there aren't any simple guides, just reams of documentation talking about "roles" and "development fabric". For somebody that is proficient in HTML/CSS and knows a little abit about asp.net it may just as well be in another language. So, does anybody know how to upload a simple aspx page and then access it in a browser? Jon

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  • Theory of Computation - Showing that a language is regular..

    - by Tony
    I'm reviewing some notes for my course on Theory of Computation and I'm a little bit stuck on showing the following statement and I was hoping somebody could help me out with an explanation :) Let A be a regular language. The language B = {ab | a exists in A and b does not exist in A*} Why is B a regular language? Some points are obvious to me. If b is simply a constant string, this is trivial. Since we know a is in A and b is a string, regular languages are closed under union, so unioning the language that accepts these two strings is obviously regular. I'm not sure that b is constant, however. Maybe it is, and if so, then this isn't really an issue. I'm having a hard time making sense of it. Thanks!

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  • How to pass a very long string/file into RESTWebservice JAX-RS Jersey

    - by Sashikiran Challa
    Hello All, I am trying to write a webservice that takes in an XML string, does parsing of it using DOM and extract particular things I want. My XML string happens to be very long so I do not want to pass it as a @QueryParam or @PathParam. Say If I write that XML string into a file, How do I go about writing a RESTful service that takes in this file, extracts whatever I want and return the results. I am actually trying to extract some number of strings, so my output should probably be an ArrayList having all these strings. Could somebody please shed some light on how I should go about doing this. Thanks in advance

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  • New scripting language

    - by j-t-s
    Hi All I am trying to create a scripting language by myself (it doesn't have to be perfect - although that would be great if it was), mostly because i'm doing it for fun and to learn about how they're created etc. According to the answer over here: http://stackoverflow.com/questions/2439929/creating-a-scripting-language what I'm supposed to be looking into is this: http://msdn.microsoft.com/en-us/library/xawadt95%28VS.85%29.aspx . But, I have absolutely no idea what that MSDN page is on about. Can somebody please help? P.S. Are there any free/open source scripting languages that target the Windows Script Host, that also have full source code available for it that I can play around with? Thank you

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