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Search found 273 results on 11 pages for 'seh hui felix leong'.

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• BuiltIn Function to Convert from Hex String to Byte

  - by Ngu Soon Hui

  This question is similar to the one here. One can easily convert from hex string to byte via the following formula: public static byte[] HexStringToBytes(string hex) { byte[] data = new byte[hex.Length /2]; int j = 0; for (int i = 0; i < hex.Length; i+=2) { data[ j ] =…

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• Database Error Handling: What if You have to Call Outside service and the Transaction Fails?

  - by Ngu Soon Hui

  We all know that we can always wrap our database call in transaction ( with or without a proper ORM), in a form like this: $con = Propel::getConnection(EventPeer::DATABASE_NAME); try { $con->begin(); // do your update, save, delete or whatever here. $con->commit(); } catch (PropelException $e) { …

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• Create a new Word Document using VSTO

  - by Ngu Soon Hui

  How can I create a new Word document pro grammatically using Visual Studio Tools for Office?

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• Export MySQL Workbench data model directly to Schema YML in Propel/ Symfony

  - by Ngu Soon Hui

  Is there any plugin that directly exports MYSQL Workbench data model directly to YML for Propel consumption?

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• Which SOA architecture is most appropriate for a Java application?

  - by Robert Greiner

  I am currently working on a pretty large Java 6 application where we are looking to split some of our functionality out into a service oriented architecture. It seems that the primary SOA framework for the application space is OSGi and I have been looking into Felix and Knopplerfish but I wanted to make sure that…

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• A Byte Array with all 0x00 is Equaled to 0x08?

  - by Ngu Soon Hui

  I think I encountered something extraordinary strange in VS 2008. All the array values are 0x00, but why it is displayed 0x00000008 at the start of the variable?

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• Reverse Bredth First Search in C#

  - by Ngu Soon Hui

  Anyone has a ready implementation of the Reverse Bredth First Search algorithm in C#? By Reverse Bredth First Search, I mean instead of searching a tree starting from a common node, I want to search the tree from the bottom and gradually converged to a common node. Let's see the below figure, this is the output…

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• Using LINQ to Obtain Max of Columns for Two Dimensional Arrays

  - by Ngu Soon Hui

  Is there anyway to use LINQ to obtain the maximum of each columns for two dimensional arrays? Assume that I have the following: var arrays = new double[5,100](); I want to get the maximum of arrays[0,:], arrays[1,:] .... arrays[4,:]. How to use LINQ to do it? I could have use such method public double…

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• Reverse Breadth First traversal in C#

  - by Ngu Soon Hui

  Anyone has a ready implementation of the Reverse Breadth First traversal algorithm in C#? By Reverse Breadth First traversal , I mean instead of searching a tree starting from a common node, I want to search the tree from the bottom and gradually converged to a common node. Let's see the below figure,…

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• When Should One Call glGetError ?

  - by Ngu Soon Hui

  glLoadIdentity says GL_INVALID_OPERATION is generated if glLoadIdentity is executed between the execution of glBegin and the corresponding execution of glEnd. But GL_INVALID_OPERATION is a flag returns by glGetError. My question is, when should we call glGetError ( in order to know whether…

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• Interop Structure: Should Unsigned Short be Mapped to byte[]?

  - by Ngu Soon Hui

  I have such a C++ structure: typedef struct _FILE_OP_BLOCK { unsigned short fid; // objective file ID unsigned short offset; // operating offset unsigned char len;…

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• Reverse Breath First Search in C#

  - by Ngu Soon Hui

  Anyone has a ready implementation of the Reverse Breath First Search algorithm in C#? By Reverse Breath First Search, I mean instead of searching a tree starting from a common node, I want to search the tree from the bottom and gradually converged to a common node. Let's see the below figure, this is…

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• Transform Two Lists into One Different List

  - by Ngu Soon Hui

  I have two lists of double List<double> X List<double> Y And I have a destination object: public class PointD { public double X {get;set;} public double Y {get;set;} } How to transform them into a single list? public static List<PointD> Transform(List<double> X,…

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• Inverse cot in C#

  - by Ngu Soon Hui

  We know that the inverse of tan is Math.Atan, what about the inverse of cot? cot(x) is defined as cot(x)=1/tan(x)

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• Generate Color Gradient in C#

  - by Ngu Soon Hui

  My question here is similar to the question here, except that I am working with C#. I have two colors, and I have a predefine steps. How to retrieve a list of Colors that are the gradients between the two? This is an approach that I tried, which didn't work: int argbMax = Color.Chocolate.ToArgb();…

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• Interface that Entails the Implementation of Indexer

  - by Ngu Soon Hui

  I am looking for a framework-defined interface that declares indexer. In other words, I am looking for something like this: public interface IYourList<T> { T this[int index] { get; set; } } I just wonder whether .Net framework contains such interface? If yes, what is it…

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• Set A Transparent Color

  - by Ngu Soon Hui

  I have a Color, and I have a method that should return a more "transparent" version of that color. I tried the following method: public static Color SetTransparency(int A, Color color) { return Color.FromArgb(A, Color.R, Color.G, Color.B); } but for some reason, no matter what the A is,…

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• Unique Constraint At Data Level in GAE

  - by Ngu Soon Hui

  It seems that the unique constraint is not natively supported in GAE, although one can enforce unique check before putting an object to store. But that was in January 2009, what about now? Can I specify unique constraint on a column during schema creation? i.e. class Account(db.Model): …

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• DllImport Based on OS Platform

  - by Ngu Soon Hui

  I have a mixture of unmanaged code ( backend) and managed code ( front end), as such, I would need to call the unmanaged code from my managed code, using interop techniques and DllImport attribute. Now, I've compiled two versions of unmanaged code, for both 32 and 64 bit OS; they are named…

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• Disable Source tab in Google Code

  - by Ngu Soon Hui

  How to disable source tab in Google Code? I don't want any random users to look at my code. Before you say that this can't be done, that Google Code is by default open source. Someone managed to do it, somehow. Edit: Before you downvote me further, take a look at the link I provided.…

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• Efficient copy of entire directory

  - by Hui Jin

  I want to copy one directory and the two files under it to another shared location of shared storage. Is it possible to combine the three(one directory and two files) as a continuous file writing and decompose it at another side to save the cost? I am limited to c language and…

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• Propel: How the "Affected Rows" Returned from doUpdate is defined

  - by Ngu Soon Hui

  In propel there is this doUpdate function, that will return the numbers of affected rows by this query. The question is, if there is no need to update the row ( because the set value is already the same as the field value), will those rows counted as the affected row? Take…

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• Receive Event Notification Broad-casted from Fortran in Managed Code

  - by Ngu Soon Hui

  I have a fortran (unmanaged code) dll as the calculation engine, and a C# form as the GUI. Now, the calculation in fortran is long, so in order not to bore the users, I decided to use Asynch command to create a progress bar. The fortran dll would be responsible for putting…

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• What is so evil about a Flash based website?

  - by Ngu Soon Hui

  I have the feeling that Flash-based ( or Silverlight-based) websites are generally frowned upon, except when you are creating games or multimedia-content rich applications. Why this is so?

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• Set Mime_type validation in Symfony

  - by Ngu Soon Hui

  I want to make sure that during file upload time, only the file of the format jpeg, png and gif are allowed. So the "File of type:" below in the screenshot must show jpeg, png and gif: I did the following for my validator in Symfony: $this->setValidator ( 'upload…

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