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• List of freely available programming books

  - by Karan Bhangui

  I'm trying to amass a list of programming books with opensource licenses, like Creative Commons, GPL, etc. The books can be about a particular programming language or about computers in general. Hoping you guys could help: Languages BASH Advanced Bash-Scripting Guide (An in-depth exploration of the art of shell scripting) C The C book C++ Thinking in C++ C++ Annotations How to Think Like a Computer Scientist C# .NET Book Zero: What the C or C++ Programmer Needs to Know About C# and the .NET Framework Illustrated C# 2008 (Dead Link) Data Structures and Algorithms with Object-Oriented Design Patterns in C# Threading in C# Common Lisp Practical Common Lisp On Lisp Java Thinking in Java How to Think Like a Computer Scientist Java Thin-Client Programming JavaScript Eloquent JavaScript Haskell Real world Haskell Learn You a Haskell for Great Good! Objective-C The Objective-C Programming Language Perl Extreme Perl (license not specified - home page is saying "freely available") The Mason Book (Open Publication License) Practical mod_perl (CreativeCommons Attribution Share-Alike License) Higher-Order Perl Learning Perl the Hard Way PHP Practical PHP Programming Zend Framework: Survive the Deep End PowerShell Mastering PowerShell Prolog Building Expert Systems in Prolog Adventure in Prolog Prolog Programming A First Course Logic, Programming and Prolog (2ed) Introduction to Prolog for Mathematicians Learn Prolog Now! Natural Language Processing Techniques in Prolog Python Dive Into Python Dive Into Python 3 How to Think Like a Computer Scientist A Byte of Python Python for Fun Invent Your Own Computer Games With Python Ruby Why's (Poignant) Guide to Ruby Programming Ruby - The Pragmatic Programmer's Guide Mr. Neighborly's Humble Little Ruby Book SQL Practical PostgreSQL x86 assembly Paul Carter's tutorial Lua Programming In Lua (for v5 but still largely relevant) Algorithms and Data Structures Algorithms Data Structures and Algorithms with Object-Oriented Design Patterns in Java Planning Algorithms Frameworks/Projects The Django Book The Pylons Book Introduction to Design Patterns in C++ with Qt 4 (Open Publication License) Version control The SVN Book Mercurial: The Definitive Guide Pro Git UNIX / Linux The Art of Unix Programming Linux Device Drivers, Third Edition Others Structure and Interpretation of Computer Programs The Little Book of Semaphores Mathematical Logic - an Introduction An Introduction to the Theory of Computation Developers Developers Developers Developers Linkers and loaders Beej's Guide to Network Programming Maven: The Definitive Guide I will expand on this list as I get comments or when I think of more :D Related: Programming texts and reference material for my Kindle What are some good free programming books? Can anyone recommend a free software engineering book? Edit: Oh I didn't notice the community wiki feature. Feel free to edit your suggestions right in!

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• iPhone: ASIFormDataRequest Returns NULL from PHP Server

  - by meetS

  Hi, I have PHP script link, which responds YES or NO when we set post userName and emailID. I have used ASI framework. When I try to connect with the following code, I get a null return. NSURL *url = [NSURL URLWithString:@"https://abc.com/abctest/registration.php"]; ASIFormDataRequest *request = [[ASIFormDataRequest alloc] initWithURL:url]; [request setPostValue:@"[email protected]" forKey:@"email"]; [request setPostValue:@"pqr" forKey:@"userName"]; [request start]; NSError *error = [request error]; if (!error) { NSString *response = [request responseString]; printf("\n\n\n Responce %s",[response UTF8String]); response = [response stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]; if ([response isEqualToString:@"YES"]) { printf("\n\n YES"); } } What am I doing wrong?

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• Entity Framework One-To-One Mapping Issues

  - by Baddie

  Using VS 2010 beta 2, ASP.NET MVC. I tried to create an Entity framework file and got the data from my database. There were some issues with the relationships, so I started to tweak things around, but I kept getting the following error for simple one-to-one relationships Error 1 Error 113: Multiplicity is not valid in Role 'UserProfile' in relationship 'FK_UserProfiles_Users'. Because the Dependent Role properties are not the key properties, the upper bound of the multiplicity of the Dependent Role must be *. myEntities.edmx 2024 My Users table is consists of some other many-to-many relationships to other tables, but when I try to make a one-to-one relationship with other tables, that error pops up. Users Table UserID Username Email etc.. UserProfiles Table UserProfileID UserID (FK for Users Table) Location Birthday

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• iPad: Merge concept of SplitViewController and NavigationController in RootView?

  - by MikeN

  I'm having trouble merging the two concepts of using a SplitViewController in my main view and having the "RootView" controller that controls the left panes popup/sidebar table view. I want to have the left "RootView" act as a navigation menu, but how do I do this when the RootView is tied through MainWindow.xib into the left pane of the SplitView? Basically, I want the left navigation to work just like the built-in email applications folder drilldown navigation. Is there an example iPad project out there that uses both SplitView and a NavigationView for the left/Root pane?

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• Sending mail using SmtpClient in .net

  - by Manish Gupta

  I am unable to send the mail using smtp client. here is the code: SmtpClient client=new SmtpClient("Host"); client.Credentials=new NetworkCredential("username", "password"); MailMessage mailMessage = new MailMessage(); mailMessage.from="[email protected]"; mailMessage.To.Add("[email protected]"); mailMessage.body="body"; mailMessage.subject="subject"; client.Send(mailMessage); The problem is that when I use this code in ASP.NET application, I do not recieve any mails. When in asp.net I change the from mail address to username given in NetworkCredential, I recieve mails. But in C# windows application, I can get emails, even if sender's email address is not valid. Thanks in advance....

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• IMAP Idle Timeout

  - by Paul

  Lets say I am using IMAP IDLE to monitor changes in a mail folder. The IMAP spec says that IDLE connections should only stay alive for 30 minutes max, but it is recommended that a lower number of minutes is selected - say 20 minutes, then cancel the idle and restart. I am wondering what would happen if the mail contents changed between the idle canceling, and the new idle being created. An email could potentially be missed. Given that RECENT is a bit vague, this could lead to getting a message list before the old idle ends, and a new idle starts. But this is almost the same as polling every 20 minutes, and defeats some of the benefit of idle. Alternatively, a new idle session could be started prior to terminating the expiring one. But in any case, I think this problem has already been solved so here I am asking for recommendations. Thanks, Paul

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• PHP form script error

  - by Alex

  Hi, I have created a rather larger html form and I would like the data to send to my email address. I am using the POST method and thought my PHP was up to snuff. However, I now get the following error upon submission: Parse error: syntax error, unexpected '}' in C:\www\mo\marinecforum\send_form_application.php on line 90. I am having a hell of a time with this. Beyond the error above, I wonder if there is a better way to approach this? Here is the PHP: http://pastebin.com/MKUcgihg Many thanks, Alex

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• Doctrine Fatal Error - Unknown relation alias

  - by Sadiqur Rahman

  I am getting following error message: Doctrine_Table_Exception: Unknown relation alias shoesTable in /home/public_html/projects/giftshoes/system/database/doctrine/Doctrine/Relation/Parser.php on line 237 I am using doctrine 1.2.2 with Codeigniter My Code is below: (BaseShoes.php and Shoes.php is auto generated) ------------BaseShoes------------ <?php // Connection Component Binding Doctrine_Manager::getInstance()->bindComponent('Shoes', 'sadiqsof_giftshoes'); /** * BaseShoes * * This class has been auto-generated by the Doctrine ORM Framework * * @property integer $sku * @property string $name * @property string $keywords * @property string $description * @property string $manufacturer * @property float $sale_price * @property float $price * @property string $url * @property string $image * @property string $category * @property Doctrine_Collection $Viewes * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ abstract class BaseShoes extends Doctrine_Record { public function setTableDefinition() { $this->setTableName('shoes'); $this->hasColumn('sku', 'integer', 4, array( 'type' => 'integer', 'fixed' => 0, 'unsigned' => false, 'primary' => true, 'autoincrement' => false, 'length' => '4', )); $this->hasColumn('name', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('keywords', 'string', 255, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '255', )); $this->hasColumn('description', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('manufacturer', 'string', 20, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '20', )); $this->hasColumn('sale_price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('price', 'float', null, array( 'type' => 'float', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('url', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('image', 'string', null, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '', )); $this->hasColumn('category', 'string', 50, array( 'type' => 'string', 'fixed' => 0, 'unsigned' => false, 'primary' => false, 'notnull' => true, 'autoincrement' => false, 'length' => '50', )); } public function setUp() { parent::setUp(); $this->hasMany('Viewes', array( 'local' => 'sku', 'foreign' => 'sku')); } } --------------ShoesTable-------- <?php class ShoesTable extends Doctrine_Table { function getAllShoes($from = 0, $total = 15) { $q = Doctrine_Query::create() ->from('Shoes') ->limit($total) ->offset($from); return $q->execute(array(), Doctrine::HYDRATE_ARRAY); } } ---------------Shoes Model----------------- <?php /** * Shoes * * This class has been auto-generated by the Doctrine ORM Framework * * @package ##PACKAGE## * @subpackage ##SUBPACKAGE## * @author ##NAME## <##EMAIL##> * @version SVN: $Id: Builder.php 6820 2009-11-30 17:27:49Z jwage $ */ class Shoes extends BaseShoes { function __construct() { parent::__construct(); $this->shoesTable = Doctrine::getTable('Shoes'); } function getAllShoes() { return $this->shoesTable->getAllShoes(); } }

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• SQL Server 2005 sp_send_dbmail

  - by Jit

  Hi Friends, When we use sp_send_dbmail to send email with attachment, the attachment gets copied into a folder inside C:\Windows\Temp. As we have many emails to be sent every day, the temp folder grows rapidly. This is the case with SQL Server 2005. We noticed that, with SQL Server 2008, we dont see these file under temp folder. Is there any setting to turn the above behavior off? Does SQL Server 2008 store the files in any other folder and not in temp? Appreciate your help and time. Thanks.

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• mime decode pdf quoted-printable

  - by TonyVipros

  Hi, I've been building a simple ticket system and it's all done and working except for when it receives PDF files via email that have been sent using quoted-printable encoding. I've tried using quoted_printable_decode(), the quoted-printable.decode stream filter, the later just created an empty file. I've also tried using $input = preg_replace('/=([a-f0-9]{2})/ie', "chr(hexdec('\\1'))", $input). However the PDF file is always unreadable. I've compared the original with the rebuilt version and there are a lot of 00 missing and some other characters replaced. original file rebuilt file

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• Sha or Md5 algorithm i need to encrypt and decrypt in flex

  - by praveen

  Hi I am developing my application in flex and JSP, so when I am passing values through HTTP Service Post method with request object but these values are tracing and modifying by testing team so I am planning to encrypt values in flex and decrypt it in jsp.so is there any algorithms like SHA or MD5 more secure algorithms, so please send any code or related links it is very useful to me. I am using like httpService = new HTTPService; httpService.request = new Object; httpService.request.task = "doInvite"; httpService.request.email = emailInput.text; httpService.request.firstName = firstNameInput.text; httpService.request.lastName = lastNameInput.text; httpService.send(); So is there any other way to give more secure ,please help me in this,Thanks in Advance.

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• What to do with CSV after export on the iPhone?

  - by alku83

  One of the requested features for my apps is to have an export feature. Most of the time the data is table-like in nature. As an example, users might enter every day what types of food they ate that day, and how many portions of each food type. As the data is table-like, I figure the most useful for export would be into CSV format. Then it can be read in spreadsheet software. I'm confident I can get the data into a CSV like format without too much trouble, and found this post would should help me: http://stackoverflow.com/questions/1512883/how-to-convert-data-to-csv-or-html-format What I'm wondering about is what I can do with the file once it has been created? Can I attach it to an email? How else can I make it available to the user so that it has some use? Alternatively, am I going about this the wrong way and would there be a better way to offer an export function?

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• SubSonic 3.0.0.3 | Data Access Layer - Audit trails

  - by No Body

  Hi guys how do you implementing an Audit Trails on all objects/class on SubSonic under Data Access Layer? If what I want is, all changes on all objects will be recorded on a single table/object. public class AuditTrail { public int Id { get; set; } public string SourceObjectName { get; set; } public int RowPK { get; set; } // Id of the SourceObject public string ChangeType {get; set;} // value such as "Add", "Update", "Delete" public string RowCapture { get; set; } // Id="6" UserId="xxx3" SurName="NoBodyx" FirstName="no3" MiddleName="B." Email="[email protected]" CreatedDate="8/6/2009 1:57:58 PM" CreatedBy="ca3" UpdatedDate="8/7/2009 5:58:37 AM" UpdatedBy="qqq" Name="no3 B. NoBodyx" public CreatedDate {get; set;} }

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• Add a Session Variable or Custom field to the Elmah Error Log table

  - by VJ

  I want to add my own session variable to elmah error log table and display it. I already have modified the source code and added the new fields to Error.cs and other fields but I don't know but when I assign an HttpContext.Current.Session["MyVar"].tostring() value to my field in the constructor it stops logging exceptions and does not log any exception. I just need to get the value of the session variable is there other way for this. I read a post which he added fields for the email but it does not say where exactly should I get the session value.

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• What does a Software Developer actually do?

  - by chobo2

  Hi I am graduating from my Computer Science degree in a few weeks from now!! I started to look for my first job. For the last couple years I gotten really into web programming(Asp.net). My first choice would be to get a junior asp.net MVC developer but I don't any companies in my area use MVC yet or if they do they are not hiring. So my second choice would be a junior asp.net Webforms developer. My other choices after that would be forms applications, mobile applications using .Net and C#. As you can see I am looking for something with .Net. I spent the last couple years doing .Net projects for school, on my free time and love the Language and it would pain me right now to switch to something like php. So now I found a posting in my area for an Entry Software Developer. I like the fact that they are using .net and that it is entry job(I never worked in this industry and never had more then like a tutoring job so I want to for like intermediate jobs). Posting Are you looking for an exciting challenge within a dynamic, people-oriented culture where you can launch your technical career? Company Name Inc. is a technology consulting company, located in Canada, that designs, develops, and delivers real-time interactive applications accessed via the Internet as well as back-end tools to support these applications. Company Name provides a combination of out-of-the-box and customized solutions to an expanding list of partners and customers. POSITION SUMMARY As a member of our team, the successful candidate will be responsible for helping us increase the quality and stability of our software systems by working jointly and directly with both the Software Development teams and the QA Team. The primary mission of this role will be to substantially enhance our test automation suite. The incumbent will design and program automated tests (unit, integration, system, stress and load) in Visual Studio using C# and will develop sound processes that help us identify and resolve defects as early as possible. The successful incumbent will help us improve and enhance system functionality, reliability, performance and scalability. This role is specifically designed for an eager, bright, new graduate who is looking for a stepping stone into a software engineering role. We promote from within and invite new graduates to apply for this important position - which may lead to new opportunities. We also offer a generous professional development plan to help you on your way. You will be a key part of a team of experts that is responsible for improving the quality of our software by: • Designing, writing, and executing test plans and programmatic tests in Visual Studio using C# and NUnit for functional testing of our code, new features, regression, and performance test procedures. • Working with the engineers to design and build the stress and load testing framework which emulates tens and even hundreds of thousands of concurrent users via a distributed network interfacing with our Load Testing Lab. • Interfacing with both the Development Team and the QA Team to ensure risks are identified and managed. • Mentoring and leading the QA Team in programmatic test automation technologies and tools. MUST HAVE SKILLS / QUALIFICATIONS: • Diploma or higher Degree in Computer Science, or equivalent formal training. • Fundamental C# programming skills. • Knowledge of Internet technologies and Microsoft Windows platforms. • Knowledge of PC hardware. • Excellent communication skills (both oral and written). • Self-starter who takes initiative, requires minimal supervision, can handle multiple simultaneous tasks. • Detail-oriented, able to concentrate, and work quickly. • Proven diagnostic, analytical, and problem solving skills. NICE TO HAVE SKILLS: • Exposure to Visual Studio Team System or Visual Studio Test Edition. • Exposure in C# using NUnit. • Exposure to NUnit, HTTPUnit, and other automation tool suites. • Exposure to Performance/Stress/Load Testing. • Good understanding of relational databases (MS SQL Server). • Familiar with video and online multi-player games. As part of our team you will have the opportunity to work with a supportive team of experts, drive your own success, and ride the wave as we continually expand our team of experts. If you are interested in this opportunity, please send your resume to [email protected] with “Entry Level Software Developer” in the subject line. So that is the posting. To me it sounds like it is QA job. I don't have anything against QA jobs but alot of them seems to be your just clicking buttons and running scripts. Is this what a typical software developer does? Like I am so on the fence to apply for this job. On one side I am not sure how much programming I would be doing. Like I want to be at least half the time programming otherwise my skills will never improve since I will never be programming in teams and stuff. At the same time I have no experience in the industry so on the other side I am thinking just go for it and then maybe a year later try to get a full programming job(provided that I got the job). Yet if I am not programming in that job then that experience will not help me for the next job I find as I will be back a square one.

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• Tiny, very-basic outgoing MTA?

  - by Xeoncross

  I am looking for a very tiny Mail-Transfer-Agent (MTA) for my smaller VPS which only need to send emails for new accounts or notifications. Originally, I used PHP sockets and wrote a 4kb STMP class to connect to google SMTP and send the emails - but I would like to be free of the 500 emails a day (or whatever) limit they have. On larger VPS I can run Postfix - but it takes about 50MB which makes it too big for a 128/256MB VPS. So are there any very tiny MTA's out there - or is there a rundown of the protocol of sending email (I guess it works by forwarding the mail through other servers till it reaches the correct end mail server right?) so I could build a smaller bash or PHP script for this outgoing stuff?

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• Error while creating in app purchase in itunes connect

  - by MW

  I'm having trouble while creating an In App Purchase in iTunes Connect. I have created a test user and am able to see the form for creating the in app purchase. However, when pressing 'Save' I get the following error message: "There was an error saving changes. Please try again later. If the problem persists, please contact us." This error has persisted for about 24 hours now. Have you encountered this problem, and do you know any way to get around it? Edit 2009-11-10: I just received a response from my email to Apple. It stated that they will start looking into it, and expect to have a solution within three business days. As soon as I hear something new, I'll post it here.

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• iphone problem - UIKit precompile error

  - by tigermain

  I've been working on a project for a few weeks now and today is the last day before it goes to client (typical). For some reason Im suddenly getting the following error when building my project (sim or device), even though other projects build fine /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.3.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIKit.h:61:42: error: UIKit/UIVideoEditorController.h: No such file or directory The last thing I was trying to do was use the UIMessage framework for email, but I have stripped that out!?!? N.B I have checked and the .h file does appear to be in the same folder as the UIKit.h file

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• OpenLDAP and user role based accedss controll (RBAC)

  - by Jason

  Hello, my company uses an openldap server which stores corporate user information ((username,passwd and some other information like email are stored in ldap).. Till now they only use it for authentication but now we'd like to use for authentication also, this means that we'll create roles (as ldap attributes in a new schema) and assign those roles in the users. My actual question is if there is a best-practice to follow for using openldap for authentication on many applications (most written in php). I understand how to make roles and assign them to users for just one application, but what about the others (each application of course has its own roles). Should I just create an ou=appName,ou=roles,dc=mycompany for each application, put the roles as attributes there and just add each role as an attribute of the user object ? is there any other recommendations ? thanks

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• SSH Tunneling from Windows to Linux/Ubuntu

  - by Mike

  My question is for my girlfriend basicly.... She works at a mall and doesn't do much so she likes to get on myspace and facebook as most girls do and yahoo to check her email. Well she uses her laptop to connect to a wireless network that doesn't allow it.... so I did some research and got putty and connected to my linux box I have here at home and it worked somewhat. My problem is it only views my webpages I have created here on this box it won't go outside of the linux host. I did it like this in putty... port is 1000 and hostname:80 is what I got outa my research then connected after seting up the tunnel bam worked for all webpages on my box but when she puts in www.myspace.com it redirects to my index.php in my var/www and won't travel outside that as I said.. Any help would be much obliged.

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• Facebook fbrocket api for android

  - by venka reddy

  Hi, i want to develop an application that take email and password of facebook as input, and gets the friends list from facebook. For this i am using fbrocket.jar api. But i can't login into the account of facebook through android mobile. Is this fbrocket.jar api enough or not?. Is there any facebook api .jar for android? any one can resolv my problem . plz clarify my doubts. ThanQ.

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• C# Monte Carlo Incremental Risk Calculation optimisation, random numbers, parallel execution

  - by m3ntat

  My current task is to optimise a Monte Carlo Simulation that calculates Capital Adequacy figures by region for a set of Obligors. It is running about 10 x too slow for where it will need to be in production and number or daily runs required. Additionally the granularity of the result figures will need to be improved down to desk possibly book level at some stage, the code I've been given is basically a prototype which is used by business units in a semi production capacity. The application is currently single threaded so I'll need to make it multi-threaded, may look at System.Threading.ThreadPool or the Microsoft Parallel Extensions library but I'm constrained to .NET 2 on the server at this bank so I may have to consider this guy's port, http://www.codeproject.com/KB/cs/aforge_parallel.aspx. I am trying my best to get them to upgrade to .NET 3.5 SP1 but it's a major exercise in an organisation of this size and might not be possible in my contract time frames. I've profiled the application using the trial of dotTrace (http://www.jetbrains.com/profiler). What other good profilers exist? Free ones? A lot of the execution time is spent generating uniform random numbers and then translating this to a normally distributed random number. They are using a C# Mersenne twister implementation. I am not sure where they got it or if it's the best way to go about this (or best implementation) to generate the uniform random numbers. Then this is translated to a normally distributed version for use in the calculation (I haven't delved into the translation code yet). Also what is the experience using the following? http://quantlib.org http://www.qlnet.org (C# port of quantlib) or http://www.boost.org Any alternatives you know of? I'm a C# developer so would prefer C#, but a wrapper to C++ shouldn't be a problem, should it? Maybe even faster leveraging the C++ implementations. I am thinking some of these libraries will have the fastest method to directly generate normally distributed random numbers, without the translation step. Also they may have some other functions that will be helpful in the subsequent calculations. Also the computer this is on is a quad core Opteron 275, 8 GB memory but Windows Server 2003 Enterprise 32 bit. Should I advise them to upgrade to a 64 bit OS? Any links to articles supporting this decision would really be appreciated. Anyway, any advice and help you may have is really appreciated.

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• How can I reliably check client identity whilst making DCOM calls to a C# .Net 3.5 Server?

  - by pionium

  Hi, I have an old Win32 C++ DCOM Server that I am rewriting to use C# .Net 3.5. The client applications sit on remote XP machines and are also written in C++. These clients must remain unchanged, hence I must implement the interfaces on new .Net objects. This has been done, and is working successfully regarding the implementation of the interfaces, and all of the calls are correctly being made from the old clients to the new .Net objects. However, I'm having problems obtaining the identity of the calling user from the DCOM Client. In order to try to identify the user who instigated the DCOM call, I have the following code on the server... [DllImport("ole32.dll")] static extern int CoImpersonateClient(); [DllImport("ole32.dll")] static extern int CoRevertToSelf(); private string CallingUser { get { string sCallingUser = null; if (CoImpersonateClient() == 0) { WindowsPrincipal wp = System.Threading.Thread.CurrentPrincipal as WindowsPrincipal; if (wp != null) { WindowsIdentity wi = wp.Identity as WindowsIdentity; if (wi != null && !string.IsNullOrEmpty(wi.Name)) sCallingUser = wi.Name; } if (CoRevertToSelf() != 0) ReportWin32Error("CoRevertToSelf"); } else ReportWin32Error("CoImpersonateClient"); return sCallingUser; } } private static void ReportWin32Error(string sFailingCall) { Win32Exception ex = new Win32Exception(); Logger.Write("Call to " + sFailingCall + " FAILED: " + ex.Message); } When I get the CallingUser property, the value returned the first few times is correct and the correct user name is identified, however, after 3 or 4 different users have successfully made calls (and it varies, so I can't be more specific), further users seem to be identified as users who had made earlier calls. What I have noticed is that the first few users have their DCOM calls handled on their own thread (ie all calls from a particular client are handled by a single unique thread), and then subsequent users are being handled by the same threads as the earlier users, and after the call to CoImpersonateClient(), the CurrentPrincipal matches that of the initial user of that thread. To Illustrate: User Tom makes DCOM calls which are handled by thread 1 (CurrentPrincipal correctly identifies Tom) User Dick makes DCOM calls which are handled by thread 2 (CurrentPrincipal correctly identifies Dick) User Harry makes DCOM calls which are handled by thread 3 (CurrentPrincipal correctly identifies Harry) User Bob makes DCOM calls which are handled by thread 3 (CurrentPrincipal incorrectly identifies him as Harry) As you can see in this illustration, calls from clients Harry and Bob are being handled on thread 3, and the server is identifying the calling client as Harry. Is there something that I am doing wrong? Are there any caveats or restrictions on using Impersonations in this way? Is there a better or different way that I can RELIABLY achieve what I am trying to do? All help would be greatly appreciated. Regards Andrew

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• NVelocity ASP.NET Examples

  - by Ben

  I'm looking to use NVelocity in my ASP.NET MVC application, not as a view engine, just for rendering some email templates. However, I cannot for the life of me get it to work. I have downloaded it from the castle project and followed the example at http://www.castleproject.org/others/nvelocity/usingit.html#step1 No matter what I try I don't seem to be able to load a template located in my site. The example suggests using the absolute path, which I have tried to no avail: Template t = engine.GetTemplate("/Templates/TestEmail.vm"); So please can someone give me two examples. One of loading a template located in the web site directory and secondly one parsing a string variable (as it is likely that my templates will be stored in a database). Many thanks Ben

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• Using fields from an association (has_one) model with formtastic in rails

  - by subprime

  I searched and tried a lot, but I can't accomplish it as I want.. so here's my problem. My models are: class User < ActiveRecord::Base has_one :profile accepts_nested_attributes_for :profile end class Profile < ActiveRecord::Base attr_accessible :user_id, :form, :title, :name, :surname, :street, :housenumber, :zipcode, :place, :phone, :mobile, :fax, :url belongs_to :user end In my view: <% semantic_form_for @user do |form| %> <%= form.inputs :login, :email, :password%> <% form.semantic_fields_for :profile do |profile| %> <%= profile.inputs %> <% end %> <%= form.buttons %> <% end %> My problem is that when I edit a person then it shows me the data on the profile. I would, that the fields from the profile even when creating a user are displayed. Thanks a lot!

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