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  • Interfacing my application with existing authentication systems

    - by Karan Bhangui
    I'm writing a web based application that will have its own authorization/authentication mechanism (traditional cookie/session based user/pass). However, depending on the organization that licenses the software, I want them to be able to plug in their own existing internal authentication system as a way to replace mine. Ideally, they'd have to run as little code as possible on their end; I'm trying to make this a mostly hosted service. I'm aware of the existence of OAuth, but don't entirely understand how I would go about implementing the system at a higher level. Any tips would be appreciated.

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  • How determine database server IP via UDP in Java

    - by Wolfgang Lenhard
    Hi, I am writing clients in Java that store the data on a database server. So far, the IP and Port of the server has to be specified in the client's settings manually. I have heard, that it is possible to automatically determine the IP of database servers via broadcast / multicast / UDP (I am not familiar with these concepts). Question: Is there a way to retrieve the IP adresses of all available database-servers in the local network? I am working with the h2 database system so far. Bye, Wolfgang

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  • Does Extreme Programming Need Diagramming Tools?

    - by Ygam
    I have been experimenting with some concepts from XP, like the following: Pair Programming Test First Programming Incremental Deliveries Ruthless Refactoring So far so good until I had a major stump: How do I design my test cases when there aren't any code yet? From what basis do I have to design them? From simple assumptions? From the initial requirements? Or is this where UML diagrams and the "analysis phase" fits in? Just had to ask because in some XP books I've read, there was little to no discussion of any diagramming tool (there was one which suggested I come up with pseudocodes and some sort of a flowchart...but it did not help me in writing my tests)

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  • Functional Programming - Lots of emphasis on recursion, why?

    - by peakit
    I am getting introduced to Functional Programming [FP] (using Scala). One thing that is coming out from my initial learnings is that FPs rely heavily on recursion. And also it seems like, in pure FPs the only way to do iterative stuff is by writing recursive functions. And because of the heavy usage of recursion seems the next thing that FPs had to worry about were StackoverflowExceptions typically due to long winding recursive calls. This was tackled by introducing some optimizations (tail recursion related optimizations in maintenance of stackframes and @tailrec annotation from Scala v2.8 onwards) Can someone please enlighten me why recursion is so important to functional programming paradigm? Is there something in the specifications of functional programming languages which gets "violated" if we do stuff iteratively? If yes, then I am keen to know that as well. PS: Note that I am newbie to functional programming so feel free to point me to existing resources if they explain/answer my question. Also I do understand that Scala in particular provides support for doing iterative stuff as well.

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  • Entity Framework - Optimistic Concurrency Issue

    - by Cranialsurge
    I have a windows service that runs every 10 seconds ... each time it runs, it takes some test data, modifies it and persists it to the database using the EntityFramework. However, on every second run, when I try to persist the change I get the following Optimistic Concurrency Exception:- Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries I know for a fact that there is nothing else writing to that DB but my service which updates records every 10 seconds. What could be causing the concurrency exception here ?

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  • MemSet & MemCopy

    - by pws5068
    I'm writing a memory allocator, and I need a way to store an integer inside of a chunk of memory. This integer will represent the size of the block so I can navigate to the end given the pointer to the beginning. Here's my test example: head_ptr = (char*) malloc(4*1024*1024); // Allocate 4MB memset(head_ptr,12345,sizeof(int)); // Set Address head_ptr = 12345 memcpy(testInt,head_ptr,sizeof(int)); // Set testInt = head_ptr printf("testInt = %i",testInt); This throws a segmentation fault on the second to last line. Does what I'm trying to do make sense? If so, what is the correct approach?

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  • can you help me with 8068 project for Delphi .net please

    - by Lex Dean
    To find an Assembly programmer is very hard to help me I'm a established Delphi programmer that has an old copy of Delphi that is not .net And I have a *.dll that I'm converting into Delphi code for .net I'm on a big learning curve hear as i know little of .net yet. I've just got a computer with .net today!!!!!! I've run the *.dll through a dissembler and started putting jump links in as writing in Delphi assembly you do not do any addressing, just reference links. The file has fixed string structures (i think C++) ASCII & ANSI strings 1/ I do not know how to identify how the code references these structures 2/ and I do not know were the functions begin and what shape they look like The code is free for any one to look at their is not many functions in it. but I have to email it as stack over flow will not allow me to display it. Can you tech me or can you refer me to a friend you may know please to tech me lexdeanair at hotmail.com Best regards, Lex Dean from New Zealand I do not wish to pester any one

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  • Using SharePoint user profiles to build a company phone directory

    - by Jonathan
    I'm working on a Sharepoint 2007 (MOSS Std) intranet implementation right now, and one of the things we'd like to do is replace the manually-maintained phone directory with the profile information we're importing from AD. People search is great, but I want to have a big page with all the names and phone numbers of the 150 or so people that work at the company (which means using the People Search webpart with a query hard-coded to return everyone won't work). A few quick searches haven't turned up anything, but this seems like a really common request. Can anyone help me out? I'm not opposed to buying a reasonably-priced webpart to solve this or writing some custom code, but both seem like they shouldn't be required for such a simple request.

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  • How to generate entity classes from nhibernate mapping files during runtime.

    - by Denis Rosca
    Hello, i need some help with c# and nhibernate. I'm working on a project that requires the entity classes to be generated from hbm files at runtime. I get the mapping files from a service, and then need to generate the classes dynamicaly and configure nhibernate to use them. The problem is that i'm new to nhibernate and not much of a pro in c#, so me writing the piece of code that achieves this is very error-prone. I was wondering if you know of any open source software that i could use. Worst case scenario (if can't find anything that even remotely resembles what i need), do you guys have some advice on where should i start? Maybe some links ? Thanks, Denis.

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  • Hibernate configuration files not found by Axis2

    - by DanJo519
    I am writing a web service to be deployed on Tomcat using Axis2. I am using Hibernate3 to persist data between the web service and a MySQL database. When running the application through by IDE, the method I am exposing through Axis2 works as intended, however when I deploy the .aar to Tomcat, I receive a SOAP Error claiming that hibernate.cfg.xml cannot be found. However, inside the .aar, I clearly see that all the configuration file and all the mapping files are included. I have determined a workaround: If I place the resulting files from the Netbeans build/class folder into the axis2/WEB-INF/class folder, then the application works as expected. My question, then, is is there a better way to deploy my application so that Axis2 will pick up the configuration and mapping files through the deployed .aar without my manually having to copy the contents of the build/class folder into the axis2/WEB-INF/class folder?

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  • Embedding Ruby, calling a function from C

    - by ThePower
    Hi, I'm writing an app that calls ruby code from c. I am having a little difficulty and wondered if anyone could point me in the rite direction. I currently have in my C. #include ruby.h main() { ruby_init(); rb_require("myRubyFile"); rb_funcall(rb_module_new(), rb_intern("RubyFunction"), 0, NULL); } My ruby file is in the same directory as my c file and is called myRubyFile.rb and contains a definition of the function RubyFunction(). This is a cut down of what I actually want to do, just making it more readable for others. I just require some feedback as to whether this is the correct method to call ruby code from my c file. Regards

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  • Firefox Extension needs to get cookie from PHP redirected external page.

    - by Tyler
    I am writing a firefox extension that interacts with a JSON server interface. I receive a url to the server which then redirects to the client site that provides the cookie. I need to be able to set this cookie in the users browser without physically loading it in the browser. Is this possible through an AJAX call? I tried using a hidden iframe, however firefox does not seem to like a php redirect in the iframe. My current solution is to load the site in a second tab that never gains focus and then auto close it when the cookie is set. This is very messy and would prefer something more streamlines. Any thoughts?

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  • Significant figures in the decimal module

    - by Jason Baker
    So I've decided to try to solve my physics homework by writing some python scripts to solve problems for me. One problem that I'm running into is that significant figures don't always seem to come out properly. For example this handles significant figures properly: from decimal import Decimal >>> Decimal('1.0') + Decimal('2.0') Decimal("3.0") But this doesn't: >>> Decimal('1.00') / Decimal('3.00') Decimal("0.3333333333333333333333333333") So two questions: Am I right that this isn't the expected amount of significant digits, or do I need to brush up on significant digit math? Is there any way to do this without having to set the decimal precision manually? Granted, I'm sure I can use numpy to do this, but I just want to know if there's a way to do this with the decimal module out of curiosity.

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  • JMS Session pooling for large numbers of Topic subscribers

    - by matthewKizoom
    I'm writing an app that will create lots of JMS topic subscribers. What is best practise regarding reusing sessions? A session per subscriber? A pool of sessions? With a session per subscriber the thread count seems unreasonable. Is this a job for something like a ServerSessionPool? What I've seen so far seems to suggest that ServerSessionPool is more geared towards one receiver consuming messages concurrently rather than lots of receivers. I'm currently working with HornetQ 2.0.0GA embedded in JBoss 4.3.0CP6.

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  • Google Wave as code repository and IDE?

    - by dehmann
    Is it possible to write a Google Wave plugin that turns it into an IDE for programming? With such an extension, Google Wave would be a replacement for Eclipse etc., and it would naturally be a code repository at the same time (replacing SVN, git, etc.). Users (programmers) would be able to create code files directly in Wave and add collaborators to do pair programming etc. The whole codebase would live in a Wave folder, and an extension would do the building and compiling on the fly. How would one go about writing such an extension?

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  • How can a Firefox extension inject a local css file into a webpage?

    - by Evgeny Shadchnev
    I'm writing a Firefox extension that needs to inject a css file into webpages. The css file is bundled with the extension, so I can access it using a chrome url chrome://extensionid/content/skin/style.css I'm trying to inject css like this when the page is loaded: var fileref = document.createElement("link"); fileref.setAttribute("rel", "stylesheet"); fileref.setAttribute("type", "text/css"); fileref.setAttribute("href", "chrome://extensionid/content/skin/style.css"); document.getElementsByTagName("head")[0].appendChild(fileref); However, the css isn't loaded and Firebug shows 'Filtered chrome url' message instead of the file content, when I inspect the link element I created. If I try to load this css file from an external server, everything's fine. Is there are way to load a css file bundled with the extension?

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  • strchr in objective C?

    - by Brian Postow
    I'm trying to write the equivalent of strchr, but with NSStrings... I've currently got this: Boolean nsstrchr(NSString* s, char c) { NSString *tmps = [NSString stringWithFormat: @"%c", c]; NSCharacterSet *cSet = [NSCharacterSet characterSetWithCharactersInString: tmps]; NSRange rg = [s rangeOfCharacterFromSet: cSet]; return rg.location != NSNotFound; } This seems needlessly complex... Is there a way to do this (preferably, one that doesn't involve turning the NSString into a cstring which doubles the run time, or writing it myself using characterAtIndex:... Am I missing some obvious method in the NSString description?

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  • Visual Studio msbuild

    - by user62958
    I have a question regarding the commandline options of msbuild. I am currently using msbuild to build projects using the existing solution files. These solution files have references to external dll which have different paths on each machine. I am currently writing a build script and passing the specific path to the project file via the /p: switch of msbuild. My current build line is: msbuild test.sln /p:ReferencePath="c:\abc" /p:ReferencePath="c:\rca" What i have noticed that Reference Path now contains only c:\rca and not c:\abc. this is causing problems for me since, the external dlls lie in two different directorys. I am allowed to keep multiple reference paths via visual studio, but not via the commandline. Is there any known way by which i can do this

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  • Does my AMD-based machine use little endian or big endian?

    - by Frank
    I'm going though a computers system course and I'm trying to establish, for sure, if my AMD based computer is a little endian machine? I believe it is because it would be Intel-compatible. Specifically, my processor is an AMD 64 Athlon x2. I understand that this can matter in C programming. I'm writing C programs and a method I'm using would be affected by this. I'm trying to figure out if I'd get the same results if I ran the program on an Intel based machine (assuming that is little endian machine). Finally, let me ask this: Would any and all machines capable of running Windows (XP, Vista, 2000, Server 2003, etc) and, say, Ubuntu Linux desktop be little endian? Thank You, Frank

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  • Declaring CustomViewController?

    - by fuzzygoat
    I have noticed in some of my older apps that in situations where I have added a custom View Controller I have not changed the View Controller class in the application delegate. For example, below I have created a CustomViewController class but have declared viewController as UIViewController. @interface ApplicationAppDelegate: NSObject <UIApplicationDelegate> { UIWindow *window; UIViewController *viewController; } My question is, both work, but for correctness should I be writing this as follows: @class CustomViewController; @interface ApplicationAppDelegate: NSObject <UIApplicationDelegate> { UIWindow *window; CustomViewController *viewController; } gary

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  • C# Win Forms Thread Pool - Unresponsive UI

    - by Goober
    Scenario I have a Windows Form Application. Inside the main form there is a loop that iterates around 3000 times, Creating a new instance of a class on a new thread to perform some calculations. Baring in mind that this setup uses a Thread Pool, the UI does stay responsive when there are only around 100 iterations of this loop (100 Assets to process). But as soon as this number begins to increase heavily, the UI locks up into eggtimer mode and the thus the log that is writing out to the listbox on the form becomes unreadable. Question Am I right in thinking that the best way around this is to use a Background Worker? And is the UI locking up because even though I'm using lots of different threads (for speed), the UI itself is not on its own separate thread? Suggested Implementations greatly appreciated.

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  • Reading file resource in Unix and MacOS

    - by Sanjeev
    Hi, I am writing my first wxWidgets application which aims to be cross-platform. The program uses dll file for plugins and in Windows, reads dll resource part for information regarding plugin name, author name etc. I have never used Unix or MacOS (little Linux though) and am wondering whether compiling binary for these other OSes will require changes to the code written for Windows. For instance, is there a DLL equivalent in Unix and MacOS? Are there any provisions of compiling resource strings and files into a such files? Thanks, Sanjeev

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  • Hadoop or Hadoop Streaming for MapReduce on AWS

    - by aeolist
    I'm about to start a mapreduce project which will run on AWS and I am presented with a choice, to either use Java or C++. I understand that writing the project in Java would make more functionality available to me, however C++ could pull it off too, through Hadoop Streaming. Mind you, I have little background in either language. A similar project has been done in C++ and the code is available to me. So my question: is this extra functionality available through AWS or is it only relevant if you have more control over the cloud? Is there anything else I should bear in mind in order to make a decision, like availability of plugins for hadoop that work better with one language or the other? Thanks in advance

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  • Write data to an xml file.

    - by Bobby
    My aim is to write an XML file with few tags whose values are the regional language. I'm using Python to do this and using IDLE(Pythong GUI) for programming. While I try to write the words in an xmls file it gives the following error. UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-4: ordinal not in range(128) For now, I'm not using any xml writer library instead I'm opening a file "test.xml" and writing the data into it. This error is encountered by the line: f.write("\t\" + data + "\"). If I replace the above write statement with print statement then it prints the data properly on Python Shell. I'm reading the data from an excel file which is not in the UTF8,16, or 32 encoding formats. Its in some other format. cp1252 is reading the data properly. Any help in getting this data writtent oan xml would be highly appreciated. Thanks in advance. Bob

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  • Static Evaluation Function for Checkers

    - by Kamikaze
    Hi all! I'm trying to write an evaluation function for a game of checkers that I'm developing but I can't find the right documentation. I've read several documents on the web witch describe different techniques for either writing one or letting the computer find it(using genetic algorithms or Bayesian learning) but they're too complicated for a novice like me. All documents pointed a reference to "Some studies in machine learning using the game of checkers" by A.L.Samuel but I couldn't get my hands on it yet :(. I've only read the follow up "Some studies in machine learning using the game of checkers -II" and found some good info there, but it doesn't explain what the eval parameters mean (I think I don't have the whole article). Thanks for your help!

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