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  • Rather than sending in numbers, having code passed to an individual in genetic programming? ECJ

    - by sieve411
    I'm using ECJ with Java. I have an army of individuals who I all want to have the same brain. Basically, I'd like to evolve the brains using GP. I want things like "if-on-enemy-territory" and "if-sense-target" for if statements and "go-home" or "move-randomly" or "shoot" for terminals. However, these statements need to be full executable Java code. How can I do this with ECJ?

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  • How do I use Entity Framework in a CLR stored procedure?

    - by Ivan
    I am looking forward to move all the logic (which is implemented as manipulating Entity Framework 4 objects) to a server side. It looks going to be simple (thanks to the application structure) and beneficial (as all I have is one oldy laptop as a client and one tough server which runs SQL Server 2008, and building a separate service for the logic can just introduce more latency if compared to doing it inside the database). So how do I correctly use Entities Framework inside a CLR stored procedure and make it using a host-server-provided SqlContext?

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  • gps orientation in android

    - by klaus-vlad
    Hi I know that the function Location.getBearing() returns the bearing if any when in move public void onLocationChanged(Location lastLocation) { int bearing=lastLocation.getBearing() } ,so now bearing might be , 170 degrees..but, I'd like to know if there is anything in android that will give me the direction of the orientation (ex for 170 degrees , the direction is : SSE south, south east)

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  • Javascript error in rails app (locally run)

    - by tesmar
    Hi, I am trying to move a development environment from production to my local machine (Ubuntu), and when I get the code up and running on my box, the site works in rails but I get this JS error: Permission denied for http://ad.doubleclick.net to call method Location.toString on http://localhost:3000. Line 0 Do you have any idea how to fix JS problems, or should I disable the ads in development?

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  • C++ game designing & polymorphism question

    - by Kotti
    Hi! I'm trying to implement some sort of 'just-for-me' game engine and the problem's plot goes the following way: Suppose I have some abstract interface for a renderable entity, e.g. IRenderable. And it's declared the following way: interface IRenderable { // (...) // Suppose that Backend is some abstract backend used // for rendering, and it's implementation is not important virtual void Render(Backend& backend) = 0; }; What I'm doing right now is something like declaring different classes like class Ball : public IRenderable { virtual void Render(Backend& backend) { // Rendering implementation, that is specific for // the Ball object // (...) } }; And then everything looks fine. I can easily do something like std::vector<IRenderable*> items, push some items like new Ball() in this vector and then make a call similiar to foreach (IRenderable* in items) { item->Render(backend); } Ok, I guess it is the 'polymorphic' way, but what if I want to have different types of objects in my game and an ability to manipulate their state, where every object can be manipulated via it's own interface? I could do something like struct GameState { Ball ball; Bonus bonus; // (...) }; and then easily change objects state via their own methods, like ball.Move(...) or bonus.Activate(...), where Move(...) is specific for only Ball and Activate(...) - for only Bonus instances. But in this case I lose the opportunity to write foreach IRenderable* simply because I store these balls and bonuses as instances of their derived, not base classes. And in this case the rendering procedure turns into a mess like ball.Render(backend); bonus.Render(backend); // (...) and it is bad because we actually lose our polymorphism this way (no actual need for making Render function virtual, etc. The other approach means invoking downcasting via dynamic_cast or something with typeid to determine the type of object you want to manipulate and this looks even worse to me and this also breaks this 'polymorphic' idea. So, my question is - is there some kind of (probably) alternative approach to what I want to do or can my current pattern be somehow modified so that I would actually store IRenderable* for my game objects (so that I can invoke virtual Render method on each of them) while preserving the ability to easily change the state of these objects? Maybe I'm doing something absolutely wrong from the beginning, if so, please point it out :) Thanks in advance!

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  • Choosing between WPF and Silverlight

    - by user43498
    Hi, We have an existing web application developed using ASP.NET/Ajax We are planning to move it to either WPF or Silverlight. Can someone please compare these 2 technologies with respect to productivity,performance, maintainability,trade-offs, their pros and cons etc ? Thanks for reading.

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  • Prolog: Finding the Nth Element in a List

    - by Thomas
    I am attempting to locate the nth element of a List in Prolog. Here is the code I am attempting to use: Cells = [OK, _, _, _, _, _] . ... next_safe(_) :- facing(CurrentDirection), delta(CurrentDirection, Delta), in_cell(OldLoc), NewLoc is OldLoc + Delta, nth1(NewLoc, Cells, SafetyIdentifier), SafetyIdentifier = OK . Basically, I am trying to check to see if a given cell is "OK" to move into. Am I missing something?

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  • send mouse movement via client-server application

    - by Ali
    I wana let the mouse appeared and move in client side as it moved in the server.For more explination my application is sending the server screen to the client side which appeared as a seperated window in the client .However, the screen is appeared but the mouse has not been seen the window as i wish .

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  • Catching multiple keystrokes simultaneously in Cocoa

    - by Vinod Kumar
    I have used 4 NSButtons and assigned them to the 4 arrow keys separately to move in four different directions. Now I want to use two keystrokes, left arrow and up arrow together simultaneously, for north east movement, how can I do it? I am only able to use one keystroke at a time , I need to catch two key strokes simultaneously, I need it for my game project.

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  • File transfer through SQL Server connection

    - by wasim
    I have a text file sitting on client machine and want to move it to the database server (MS SQL 2008) but I don't have any access to the server except through the SQL Server client. Can I transfer this file to the server using SQL client connection?

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  • Should I use my models in a library?

    - by Piers
    I've got my auth library in codeigniter which accesses the database to check to see if the email/password combination is correct. If I'm sticking to the MVC practice, should I move the function that interacts with the database to my model, or is it best practice to leave it where it is so I can use it in the future? Doesn't make much difference to me, other than the fact I'd have to re-write the library and create the function in my model, but if that's the way it should be then so be it.

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  • WordPress - moving from one host to another

    - by Maor
    I am trying to move a WordPress installation from one server to another one, including all of the SQL data, and the file-system data (photos,template files). I just have a problem changing the URLs in the database, since I need to replace the new URL with the old one. I would love to have some suggestions about how can I replace the URLs (maybe there's a rplace statement in SQL?) Thanks in advance.

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  • logfile deleted on Oracle database how to re-create it?

    - by Daniel
    for my database assignment we were looking into 'database corruption' and I was asked to delete the second redo log file which I have done with the command: rm log02a.rdo this was in the $HOME/ORADATA/u03 directory. Now I started up my database using startup pfile=$PFILE nomount then I mounted it using the command alter database mount; now when I try to open it alter database open; it gives me the error: ORA-03113: end-of-file on communication channel Process ID: 22125 Session ID: 25 Serial number: 1 I am assuming this is because the second redo log file is missing. There is still log01a.rdo, but not the one I have deleted. How can I go about recovering this now so that I can open my database again? I have looked into the database created scripts, and it specified the log02a.rdo file to be size 10M and part of group 2. If I do select group#, member from v$logfile; I get: 1 /oradata/student_db/user06/ORADATA/u03/log01a.rdo 2 /oradata/student_db/user06/ORADATA/u03/log02a.rdo 3 /oradata/student_db/user06/ORADATA/u03/log03a.rdo 4 /oradata/student_db/user06/ORADATA/u03/log04a.rdo So it is part of group 2. If I try to add the log02a.rdo file again "already part of the database". If I drop group 2 and then add it again with these commands: ALTER DATABASE ADD LOGFILE GROUP 2 ('$HOME/ORADATA/u03/log02a.rdo') SIZE 10M; Nothing. Supposedly alters the database, but it still won't start up. Any ideas what I can do to re-create this and be able to open my database again?

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  • UIPickerView didSelectRow delay

    - by Rob Bonner
    Hello all, I have a UIPickerView implemented in one of my pages that depends on the didSelectRow delegate method. An odd behavior I have noticed is when the user moves a wheel and leaves it between selections, then the wheel will move very slowly to the closest selection. The didSelectRow event will not fire until this is complete, sometimes 3 seconds later. Is there a way to speed this up, or detect when the wheel is being moved, so I can freeze my interface during this time?

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