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• .net thread safety

  - by george9170

  Why is locking a type considered very bad? For example, lock(typeof(DateTime)) I understand that static methods of any class in .net is considered thread safe, and that instance members are not. So it isn't necessary to lock DateTime while you are using it. The book I am reading doesn't explain why it is bad it just says it is. Any explanation will be great.

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• Rijndael encryption from Action Script to C#

  - by Coppermill

  I am trying to share encryption between Action Script and C# My task is to decrypt the following message within C# f1ca22a365ba54c005c3eb599d84b19c354d26dcf475ab4be775b991ac97884791017b12471000def05bb77bfe9c3a97d44ef78c9449f12daf6e25b61ab1a281 It uses Rijndael encyption , ECB mode (electronic code book), Key: Pas5pr@se , 128 bit key size and block size. The problem I have is I can't seem to do it, anyone help me on this?

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• ABAddressBook: trouble getting Identifier from MultiValueRef Index

  - by Meltemi

  Every time the following line gets executed emailID is set to 0... yet it clearly should be 1 (or whatever is the Identifier for the value at index 1). ABMultiValueIdentifier emailID = ABMultiValueGetIdentifierAtIndex(emailMultiRef, selectedEmailIndex); CFIndex selectedEmailIndex has a value of: 1 ABMultiValueRef emailMultiRef has a value of: 0: _$!<Work>!$_ (0x4847e90) - [email protected] (0x4847eb0) 1: _$!<Work>!$_ (0x4847660) - www.creative-consulting-inc.com (0x4847810) Anyone see what's happening within this convoluted address book?!?

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• PHP - Variable inside variable?

  - by RC

  Hey guys... $bookA = "123"; $crack = "A"; I want to do something similar to this: echo $book$crack; Such that the output is 123. What is the correct syntax for the echo command? Thanks.

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• Actor model to replace the threading model?

  - by prosseek

  I read a chapter in a book (Seven languages in Seven Weeks by Bruce A. Tate) about Matz (Inventor of Ruby) saying that 'I would remove the thread and add actors, or some other more advanced concurrency features'. Why and how an actor model can be an advanced concurrency model that replaces the threading? What other models are the 'advanced concurrency model'?

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• Any experience with Itzam Portable Embedded Database Engine?

  - by Andy Dent

  Has anybody ever used or have useful comments on Itzam/core? I am attracted to it partly because I was impressed by the author's book C++ Components & Algorithms and as a possible backend for my search for a large non-SQL portable database engine.

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• WinForms name chooser

  - by PavelR

  I have a set of names (first, last, salutation) and need a control to allow users to select a single name using WinForms. A ComboBox works fine if the there are ~20 names, but not so well when there are 100 names. Can anyone recommend a name picker? Perhaps an address book control that I could customize? It's not too hard to write my own, but I have other wheels to invent.

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• Mastering CSharp.

  - by Subrat

  Hi All, Want to master CSharp. Know the basics though. Please name a few very good book to choose from. I have always loved the complete reference books. Is the one for CSharp is good? Thanks.

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• Resources for JVM Tuning

  - by portoalet

  Anybody knows a good book or two (or resources) for JVM Tuning? I am struggling to find any. I stumbled upon Apress Java EE 5 Performance Management and Optimization, but there was not much in there.

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• Which are the best tools for Graphic Designing?

  - by Jen

  Hello, I want to take up Graphic Designing as my profession. I would be designing Logos, Icons, Stationery, Brochures, Handouts, Book Covers, etc. But I am thoroughly confused as to which tools are the best and which books/resources will help me learn these tools and graphic designing like a professional. I am ready to shell out money to purchase the resources. Please help me out! Thanks, Jen

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• CakePHP on IIS7 - no css/js/img

  - by user300050

  I can’t get the css, js and img loaded. I’ve been using the web.config out of this article: http://book.cakephp.org/view/1533/A-Note-on-mod_rewrite Please any suggestions…

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• Using ExtJS in ASP.NET

  - by Mike

  I don’t have advanced knowledge in JavaScript, and I am trying to learn how to use ExtJS framework in ASP.NET (C# or VB.NET) environment. I’ve got couple of samples, but was unable get the project working. Can anyone point in the right direction such as website or book so I can go a read up about the ExtJS in more details and how I can include this into my website?

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• What Sorting Algorithm Is Used By LINQ "OrderBy"?

  - by Mystagogue

  Evidently LINQ's "OrderBy" had originally been specified as unstable, but by the time of Orca it was specified as stable. Not all documentation has been updated accordingly - consider these links: Jon Skeet on OrderBy stability Troy Magennis on OrderBy stability But if LINQ's OrderBy is now "stable," then it means it is not using a quicksort (which is inherently unstable) even though some documentation (e.g. Troy's book) says it is. So my question is: if not quicksort, then what is the actual algorithm LINQ's orderBy is using?

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• Where to find documentation/tutorials on ASP.NET MVC2?

  - by Richard77

  Hello, It looks like the final release for ASP.NET MVC 2 has been already around for 2 weeks. Unfortunately, I can't find documentation that's intended for MVC 2 exclusively. I've checked Amazon.com (no book yet on MVC2), ScottGu's Blog (only 2 short posts), ASP.NET/MVC website (they've only posted what are alreadi in the ScottGu's blog). Any idea where to find matter on MVC2? Thanks for helping.

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• How to layout dll or com when develop windows application with .net?

  - by ziang

  Is there any resources that how to create windows application especially for how to design the dll to wrap the api call or the similar? It seems that people don't compile the entire project into a single exe for release and what is the best practice to architect the windows application component based on MVC pattern? Is there any resources or any good book on this topic? Thanks!

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• Phone Application For .Net

  - by Terry

  Hello guys, As a .net developer main c#, I want to know what would be the best approach for me to develop Phone application that runs on major phones. Just to let you know Iphone is out of the question because of the costs that are involved, not ready to buy Mac book. I want something I can develop within Windows operating system, Android could have been the best option but it does not integrated well with .net. Any idea please ? Terry

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• Bucket sort for integers

  - by rafael

  Could anybody help me with bucket sort algorithm for integers ? It's often mistake when people say they have this algorithm, but this is counting sort ! Maybe it works similar, but it is something different. I hope you will help mi find the right way, 'cause now I have no idea (Cormen's book and Wikipedia are not so helpful). Thanks in advance for all your respones.

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• seed-fu not working on winxp

  - by cbrulak

  I have seed-fu installed on my mac book, no problems. But I can install it fine on winxp but when I run it, I get: Don't know how to bulid task db:seed I checked my installed directory (c:\ruby\libs) and it appears to be there. Any ideas?

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• error C2784: Could not deduce template argument

  - by atch

  Hi guys, Still fighting with templates. In this example, despite the fact that is copied straight from a book I'm getting the following error message: Error 2 error C2784: 'IsClassT<T>::One IsClassT<T>::test(int C::* )' : could not deduce template argument for 'int C::* ' from 'int'. This is an example from a book Templates - The Complete Guide. (I work with Visual Studio 2010 RC). template<typename T> class IsClassT { private: typedef char One; typedef struct { char a[2]; } Two; template<typename C> static One test(int C::*); template<typename C> static Two test(…); public: enum { Yes = sizeof(IsClassT<T>::test<T>(0)) == 1 }; enum { No = !Yes }; }; class MyClass { }; struct MyStruct { }; union MyUnion { }; void myfunc() { } enum E {e1} e; // check by passing type as template argument template <typename T> void check() { if (IsClassT<T>::Yes) { std::cout << " IsClassT " << std::endl; } else { std::cout << " !IsClassT " << std::endl; } } // check by passing type as function call argument template <typename T> void checkT (T) { check<T>(); } int main() { /*std::cout << "int: "; check<int>(); */ std::cout << "MyClass: "; check<MyClass>(); } And although I know roughly what's going on in this example I cannot fix this error. Thanks for help.

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• cake's Acl problems...

  - by Gaurav

  I created an application using the method described in the "http:// book.cakephp.org/view/641/Simple-Acl-controlled-Application" but after I try to log in there is an error which says, "DbAcl::allow() - Invalid node [CORE\cake\libs\controller\components\acl.php, line 325]" I did exactly same as mentioned in the website but after loggin in I am given this error msg.. Please help me rectify this. Any help is greatly appreciated..... thanks gaurav sharma

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• Where do you use generators feature in your python code?

  - by systempuntoout

  I have studied generators feature and i think i got it but i would like to understand where i could apply it in my code. I have in mind the following example i read in "Python essential reference" book: # tail -f def tail(f): f.seek(0,2) while True: line = f.readline() if not line: time.sleep(0.1) continue yield line Do you have any other effective example where generators are the best tool for the job like tail -f? How often do you use generators feature and in which kind of functionality\part of program do you usually apply it?

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• MCTS Training Kit

  - by Wilson

  Hello every one. Can any one tell me where can I find "MCTS Self-Paced Training Kit (Exam 70-515): Microsoft .NET Framework 4 – Web Applications Development" book for download. Thanks

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• Listview with copy-paste

  - by Zubirg

  Hi, Is there an easy way of adding copy-paste for a listview, or should I just switch to DataGridView instead? My application is kinda like an address book, it contains emails, numbers etc where copy paste would be useful.

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• Genetic Programming in C#

  - by Mac

  I've been looking for some good genetic programming examples for C#. Anyone knows of good online/book resources? Wonder if there is a C# library out there for Evolutionary/Genetic programming?

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• Blackberry Reach UI Tutorial Link Required

  - by Nirmal

  Hello All.. I have just entered into the Blackberry Arena... So, have gone through with the overview concepts of blackberry api. But, for the UI part, I could not find any interesting facts or tutorial. So, can anybody provide me some book or tutorial link for reach UI design for blackberry api ? Basically I want similar controls as iPhone, like Tab Bar, Segmented control etc. Thanks in advance...

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