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  • Tracing UNIX signal origins?

    - by jdizzle
    If I have a process that receives signals from other processes, is there a way for me to somehow tell which process (if any) sent a signal? strace lets me trace which signals a process has received, but doesn't allow me to trace who issued them.

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  • Game network physics collision

    - by Jonas Byström
    How to simulating two client-controlled vehicles colliding (sensibly) in a typical client/server setup for a network game? I did read this eminent blog post on how to do distributed network physics in general (without traditional client prediction), but this question is specifically on how to handle collisions of owned objects. Example Say client A is 20 ms ahead of server, client B 300 ms ahead of server (counting both latency and maximum jitter). This means that when the two vehicles collide, both clients will see the other as 320 ms behind - in the opposite direction of the velocity of the other vehicle. Head-to-head on a Swedish highway means a difference of 16 meters/17.5 yards! What not to try It is virtually impossible to extrapolate the positions, since I also have very complex vehicles with joints and bodies all over, which in turn have linear and angular positions, velocities and accelerations, not to mention states from user input.

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  • Any good C interpreters?

    - by NoMoreZealots
    I was looking at Ch from SofIntegration and it looks pretty interesting as a possible teaching tool. It would allow the you to let someone learning to program "play" while preparing them to write full fledged C programs. I was wondering if anybody had "good" experiences using a C interpreter or weather it would be a better to go with a language that is typically interpreter to start with?

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  • Abstract over X

    - by Bruno Bieth
    Sorry for this english related question but I only came across that expression in the context of IT. What does abstracting over something mean ? For example abstracting over objects or abstracting over classes. Thanks

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  • How to implement a UIViewAutoresizingFlexibleHeight to a UIScrollView using Objective C in iPhone SD

    - by AppleHack23
    Hello, I'm working on multiple applications for my school. I just need this last bit of code and I was wondering how I could implement a UIViewAutoresizingFlexibleHeight into the app for each textfield. What this does is it makes the textfield pop above the keyboard, rather than over lapping it. I have already implemented a UIScrollView, so if someone on here could be pretty descriptive, or post a link to a video, that would be well appreciated. I am new to coding. Thanks very much!!!!

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  • Text Aligned Next To Photo in CSS

    - by PF1
    Hi Everyone: I am wondering if there is some way to align text on the right of a photo, and keep the text in that same "box" even after the image ends using HTML and CSS. A quick "diagram" of what I am attempting to accomplish is below: ------- -------- ------- -------- -Image- - Text - ------- -------- ------- -------- -------- -------- Thanks for any help!

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  • Create servlet from existing Java project

    - by user69514
    I have a Java Swing project for my class. I would like put it on my website so people can use it. However I'm not sure if there is a way to turn it into a servlet. Or do I need to know JavaScript? I'm confused. Is there a way to make my swing application into a servlet automatically?

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  • How to check if TypeIdenitifier(T) is an Object?

    - by John
    I'm creating a generic list class that has a member of type Array(Array of ). The problem is the class descruction,because the class is supposed to be used for types from byte to types inheriting TObject. Specifically: destructor Destroy; var elem:T; begin /*if(T is Tobject) then //Check if T inherits TObject {Compiler error!} for elem in FData do TObject(elem).Free;*/ // do not know how to do it SetLength(FItems,0); //FItems : Array of T inherited Destroy; end; How do I check if T is TObject so I can free every member if the typeidenitifier is a class,for example?

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  • How do I use a graphics method to pass parameters? Example is below.

    - by sonny5
    private static void getCorners(out float Wx, out float Wy, out float Vx, out float Vy) { // note-- I don't know how to flip the Y axis using this method... this is not a "graphics" method // In other words, I should use something like: // flipY(object sender, System.EventArgs e); // but don't know the syntax or whatever // I tried to do this: //Graphics g = this.CreateGraphic //Matrix myMatrix2 = new Matrix(1, 0, 0, -1, 0, 0); // flip Y axis //g.Transform = myMatrix2; //g.TranslateTransform(0, 480, MatrixOrder.Append); // ...but I get the error: // error CS0026: Keyword 'this' is not valid in a static property, static method, or // static field initializer Wx = 1.00F; Wy = 1.00F; // make this 1.00 (not 3.00F) down from the TOP since cannot get Y flipped Vx = ((Wx- WXmin)*((VXmax-VXmin)+VXmin)/(WXmax-WXmin)); Vy = ((Wy-WYmin)*(VYmax-VYmin)/(WYmax-WYmin)+VYmin); } thanks, Sonny5

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  • How to get input from web?

    - by Dunix
    Hi, i am trying to find out, how to get input from html inputs using c++. In windows you can send WM_GETTEXT to the window and it returns text, that you wanted. But is there any way to do the same thing in web interface?. I am not interesting in sniffing packets now.

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  • What host do I have to bind a listening socket to?

    - by herrturtur
    I used python's socket module and tried to open a listening socket using import socket import sys def getServerSocket(host, port): for r in socket.getaddrinfo(host, port, socket.AF_UNSPEC, socket.SOCK_STREAM, 0, socket.AI_PASSIVE): af, socktype, proto, canonname, sa = r try: s = socket.socket(af, socktype, proto) except socket.error, msg: s = None continue try: s.bind(sa) s.listen(1) except socket.error, msg: s.close() s = None continue break if s is None: print 'could not open socket' sys.exit(1) return s Where host was None and port was 15000. The program would then accept connections, but only from connections on the same machine. What do I have to do to accept connections from the internet?

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  • Sleep Function Error In C

    - by Arman
    I have a file of data Dump, in with different timestamped data available, I get the time from timestamp and sleep my c thread for that time. But the problem is that The actual time difference is 10 second and the data which I receive at the receiving end is almost 14, 15 second delay. I am using window OS. Kindly guide me. Sorry for my week English.

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  • Is it possible to get Semantic (emacs) to visit all files automatically?

    - by RealityMonster
    From what I can tell from the docs, semantic works by slowly building up an idea of what's in your project by analysing each file (and possibly its neighbours) as you visit them. This is too slow. I'd like to just have it visit all the files in my project. Is there an easy way to do this? Having to visit hundreds of files before I can get decent autocomplete working seems crazy. I've also got a etags file generated. Can I leverage that somehow?

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