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• how to loop through an array of vectors in C#

  - by Robert

  Hello everyone,I now have an array of vectors: static Vector3[] axes = new Vector3[] { Vector3.UnitX, Vector3.UnitY, Vector3.UnitZ }; and I want to loop through it,the code I write is: for(int i=0;i<axes.Length;i++) { do sth. about axes[i]; } However,it doesnt work and gets into infinite loop,could anyone help? thx.

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• Help with google maps api, user allowed marker map

  - by Exilekiller

  Without telling everyone too much about my new idea for a website, Pretty much I need help, maybe someone can help write it up, with a site that has a simple map that allows any user to double click the map and make a marker. When the marker comes up I just want Title and Description available for edit(only once, so others cant change it). I have been trying to figure this out myself but computer science isnt my major so its killing me. Thanks for the help

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• c++ volatile multithreading variables

  - by anon

  I'm writing a C++ app. I have a class variable that more than one thread is writing to. In C++, anything that can be modified without the compiler "realizing" that it's being changed needs to be marked volatile right? So if my code is multi threaded, and one thread may write to a var while another reads from it, do I need to mark the var volaltile? [I don't have a race condition since I'm relying on writes to ints being atomic] Thanks!

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• Why do some asp.net controls keep its state although its EnableViewState property is false?

  - by Ahmet Altun

  Put a textbox, a checkbox and a button on a website. Set the "EnableViewState" property of textbox and checkbox to false. Write something into textbox and check the checkbox. Click the button. Why is the textbox still written and the checkbox checked after response?

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• Can I use the [] operator in C++ to create virtual arrays

  - by Shane MacLaughlin

  I have a large code base, originally C ported to C++ many years ago, that is operating on a number of large arrays of spatial data. These arrays contain structs representing point and triangle entities that represent surface models. I need to refactor the code such that the specific way these entities are stored internally varies for specific scenarios. For example if the points lie on a regular flat grid, I don't need to store the X and Y coordinates, as they can be calculated on the fly, as can the triangles. Similarly, I want to take advantage of out of core tools such as STXXL for storage. The simplest way of doing this is replacing array access with put and get type functions, e.g. point[i].x = XV; becomes Point p = GetPoint(i); p.x = XV; PutPoint(i,p); As you can imagine, this is a very tedious refactor on a large code base, prone to all sorts of errors en route. What I'd like to do is write a class that mimics the array by overloading the [] operator. As the arrays already live on the heap, and move around with reallocs, the code already assumes that references into the array such as point *p = point + i; may not be used. Is this class feasible to write? For example writing the methods below in terms of the [] operator; void MyClass::PutPoint(int Index, Point p) { if (m_StorageStrategy == RegularGrid) { int xoffs,yoffs; ComputeGridFromIndex(Index,xoffs,yoffs); StoreGridPoint(xoffs,yoffs,p.z); } else m_PointArray[Index] = p; } } Point MyClass::GetPoint(int Index) { if (m_StorageStrategy == RegularGrid) { int xoffs,yoffs; ComputeGridFromIndex(Index,xoffs,yoffs); return GetGridPoint(xoffs,yoffs); // GetGridPoint returns Point } else return m_PointArray[Index]; } } My concern is that all the array classes I've seen tend to pass by reference, whereas I think I'll have to pass structs by value. I think it should work put other than performance, can anyone see any major pitfalls with this approach. n.b. the reason I have to pass by value is to get point[a].z = point[b].z + point[c].z to work correctly where the underlying storage type varies.

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• Getting a count of users each day in Mondrian MDX

  - by user1874144

  I'm trying to write a query to give me the total number of users for each customer per day. Here is what I have so far, which for each customer/day combination is giving the total number of user dimension entries without splitting them up by customer/day. WITH MEMBER [Measures].[MyUserCount] AS COUNT(Descendants([User].CurrentMember, [User].[User Name]), INCLUDEEMPTY) SELECT NON EMPTY CrossJoin([Date].[Date].Members, [Customer].[Customer Name].Members) ON ROWS, {[Measures].[MyUserCount]} on COLUMNS FROM [Users]

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• Looking for early paper about compiling object-oriented code

  - by Robert Kosara

  I remember reading a paper a long time ago that talked about object-oriented programming. I believe that this was from the early 1980s or perhaps even before then. This was at the time when object-oriented programming was still done through pre-processors, and one thing that stuck with me is this: it argued that you could write code in either procedural or object-oriented fashion, and after preprocessing/compiling, you would end up with the exact same machine code. Does anybody know which paper I'm talking about?

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• Simple Array in java

  - by user1311590

  I need to create the following in my main method. Create an array of size 100 doubles. write a loop to sotr the number 150.0 - 249.0 in the 100 location. public class Lab6_2 { public static void main(String[] args) { double[] values; values = new double [100]; double i = 0; for(double i = 150.0; i<249.0;i++){ System.out.println(values[99]); } } }

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• No IO exception reported for socket operation when the interface is removed

  - by user352536

  The wifi network is connected, the application setup a socket connection and exchange data with the remote server. But when turn off the wifi, the inteface is removed, while socket operation read/write on this socket is still like normal, no any IO exception reported. The application has to do some extra checking to avoid waiting for the data forever. Is this the normal case for Android design? Is there any plan to fix it?

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• What is the C# equivalent to LINEST from Excel?

  - by Newbie

  Is any inbuit function is there or we need to write our own. In later case could you please give me some link where it has been implemented. And how it works? Thanks

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• Best way to apply a theme to an iPhone app

  - by Tim

  Hi I am trying to write some iPhone app with a theme switcher, where users can select a theme to change the background color, alpha, images, and some push buttons' look and feel as well (size, image, or even locations). What would be the best way to apply the theme? Thanks, Tim

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• how to capture the right click event using getMouse()

  - by Leyond

  I am trying to use graphics.py to write a user graphics interface. The problem is that how can I capture the right click event? It seems that the function getMouse() could just returns where the mouse was left-clicked as a Point object. from graphics import * def main(): win = GraphWin("My Circle", 100, 100) c = Circle(Point(50,50), 10) c.draw(win) win.getMouse() # pause for click in window win.close() main() I want to know how can I capture the right-click event in the window, thanks.

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• how do i specify connection parameters on the command line to run mysql in batch mode?

  - by hmak

  I need to be able to write a script to automatically connect mysql in batch mode so that I can run some .sql files. I tried to enter the following at the prompt: ./mysql -u root -p mypassword but I keep getting a "Enter password: " prompt. What am I doing incorrectly? Thanks.

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• iphone, need to put many text boxes on the view, how to scroll down to view more content?

  - by Siegfried

  iphone, need to put many text boxes on the view, how to scroll down to view more content? I actually put buttons and labels on the ScrollView, but the scrolling doesn't work. Do I need to write any code for that, any example? Thanks.

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• Accessing the database and sending an email in a symfony batch script

  - by morpheous

  I am running Symfony 1.3.2 on Ubuntu. I need to write a batch script that can: Access the database using the ORM Send email(s) IIRC, this was in a previous cookback, but I thing that was for an earlier version of Symfony (the API may have changed since). Does anyone know how I may access the database via the ORM layer in a batch script and also how to send out email(s) in a batch script?

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• DrawRect in CPLayerHostingView?

  - by senthilmuthu

  0 Hi, i am using Core-plot . but when i declare the normal UIView as CPLayerHostingView,how can i handle drawRect of that view , i cant give another custom UIview name and write code in drawRect of that view?please any help to handle drawRect of CPLayerHostingView?

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• unobtrusive "default" text in input WITHOUT jQuery

  - by Adam Kiss

  Hello, i'm trying to write unobtrusive default/placeholder text in input (actually, relatively placed label over input, which hides on onFocus, and stays hidden if input isn't empty on onBlur), but I don't want to use jQuery, because this is the only javascript used on page - therefore using jQuery seems a bit over the top. Please, how can I do this without jQuery? Thank you.

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• Writing a function List to a tuple

  - by Pradeep

  how to write a function from list to a tuple i have taken the string to a tuple. but i need to send it to a tuple. can someone help me

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• I can't see any trace output in ASP.NET

  - by asksuperuser

  In Visual Studio 2010 I added Trace to Page_Load as explained here http://www.asp101.com/articles/robert/tracing/default.asp but I can't see any Trace output, why ? public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Trace.IsEnabled = true; Trace.Write("Hello World"); } }

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• Design a mini script language

  - by radi

  hi , my project this year is to develop a text mining tool (with new features) so we need a mini script language in this tool to add annotation to texts this language should be simple and like lisp grammars (left and right side) . what i need is how to design this language ,i know how to constract the compiler , but how to write language grammars ? , and i want to use some mini open source language or any language bnf please advice me and if there is a language i can use and customize to meet my needs ? thanks

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• C++ Image Processing Libraries

  - by xsound

  Hi, I am looking for a C++ library for image processing. I need the library to threshold a PPM photo (color photo). Should I write my own code? what do you guys think? Thanks in advance.

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• built in function to combine overlapping string sequences in php?

  - by Jamex

  is there a built in function in php that would combine 2 strings into 1? example: $string1 = abcde, $tring2 = cdefg combine to get: abcdefg if the exact overlapping sequence and the position are known, then it is possible to write a code to merge them. TIA

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• Embed application compilation time stamp

  - by Chris Marisic

  Is there an easy way to configure in a build process to write in the time stamp of the build to be displayed in the application to have something like "This page was last updated: 06/26/2010"

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• Using macro to check null values

  - by poliron

  My C code contains many functions with pointers to different structs as parameters which shouldn't be NULL pointers. To make my code more readable, I decided to replace this code: if(arg1==NULL || arg2==NULL || arg3==NULL...) { return SOME_ERROR; } With that macro: NULL_CHECK(arg1,arg2,...) How should I write it, if the number of args is unknown and they can point to different structs?(I work in C99)

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• How do I connect StaticListableBeanFactory with ClassPathXmlApplicationContext?

  - by Aaron Digulla

  In the setup of my test cases, I have this code: ApplicationContext context = new ClassPathXmlApplicationContext( "spring/common.xml" ); StaticListableBeanFactory testBeanFactory = new StaticListableBeanFactory(); How do I connect the two in such a way that tests can register beans in the testBeanFactory during setup and the rest of the application uses them instead of the ones defined in common.xml? Note: I need to mix a static (common.xml) and a dynamic configuration. I can't use XML for the latter because that would mean to write 1000 XML files.

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