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• Netbeans 7.2 not starting

  - by Buddhika Ariyaratne

  I recently installed Netbeans 7.2 beta and it worked fine. Then I installed Netbeans 7.2 final release on top of beta and during the installation, Netbeans 7.1 and Netbeans 7.12 were there. Now when I launch Netbeans, it does not go beyond "loading modules" stage. Simply the Netbeans screen disappear few seconds after the launch. Then I did the following. Uninstalled all the Netbeans versions and re-installed Netbeans 7.2 Deleted AppData/Netbeans folder Deleted User/.nbi folder Searched the registry and deleted Netbeans related entries. (But only one entry was found) Deleted Netbeans Folder in Program Files folder. Uninstalled and Re-installed in a separate drive. Uninstalled and Re-installed under another user account. None of the above worked, the only thing I did not try was to re-install the Windows XP operating system. It there any option to try before re-installing the operating system?

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• best method for background uploader in Android

  - by Dr.Dredel

  Problem: I want to write a process that will allow a user to take photos with the device and for those photos to then be uploaded to some listener in the cloud. The user should not have to do anything to initiate the upload, a background listener would just watch the folder and as long as it finds files in it it would upload them and delete them. Two problems: 1) how to keep the program running in the background even after the user is no longer taking pictures (and if they reboot the device for it to wake up and finish the uploads, if any remain) 2) assuming the connection is spotty (as it always is) how to verify that a given image has completed its upload, and if not, to resubmit it. I don't need any code examples, I just would like opinions on the best strategy to get this implemented. I was going to use Apache commons and just do an upload to a PHP, but am not sure what sort of error checking exists to take into account a connection drop mid file. TIA.

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• Learning to work with audio in C++

  - by Skilldrick

  My degree was in audio engineering, but I'm fairly new to programming. I'd like to learn how to work with audio in a programming environment, partly so I can learn C++ better through interesting projects. First off, is C++ the right language for this? Is there any reason I shouldn't be using it? I've heard of Soundfile and some other libraries - what would you recommend? Finally, does anyone know of any good tutorials in this subject? I've learnt the basics of DSP - I just want to program it! EDIT: I use Windows. I'd like to play about with real-time stuff, a bit like Max/MSP but with more control.

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• Mathematica & J/Link: Memory Constraints?

  - by D-Bug

  I am doing a computing-intensive benchmark using Mathematica and its J/Link Java interface. The benchmark grinds to a halt if a memory footprint of about 320 MB is reached, since this seems to be the limit and the garbage collector needs more and more time and will eventually fail. The Mathematica function ReinstallJava takes the argument command line. I tried to do ReinstallJava[CommandLine -> "java -Xmx2000m ..."] but Mathematica seems to ignore the -Xmx option completely. How can I set the -Xmx memory option for my java program? Where does the limit of 320 MB come from? Any help would be greatly appreciated.

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• Why would you precede the main() function in C with a data type?

  - by Milktrader

  Many are familiar with the hello world program in C #include <stdio.h> main () { printf ("hello world"); return 0; } Why do some precede the main () function with int as in: int main() Also, I've seen the word 'void' entered inside the () as in: int main(void) It seems like extra typing for nothing, but maybe it's a best practice that pays dividends in other situations? Also, why precede main() with an int if you're returning a character string? If anything, one would expect: char main(void) I'm also foggy about why we return 0 at the end of the function.

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• Hold the command prompt until user close it from close button.

  - by Kasun

  Hi, I going to get the command prompt from my C# application to compile some C++ files. Code is like this. private void button1_Click(object sender, EventArgs e) { string filePath = @"C:\Program Files\Microsoft Visual Studio 9.0\VC\bin\cl.exe"; System.Diagnostics.Process.Start(filePath); } But After i click the button it suddenly comes and disappear. Even its opening two command prompts. I need to Hold it and only one command prompt should appear. Can some one provide me the necessary codes. Thank you.

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• 3D framework/library os x

  - by Deano

  Does anyone have any advice as to a good framework for simplifying the generation of 3D models? I am trying to construct a parametric program for tasks such as ship design. Actions such as surface modelling, intersections etc are a must. I have investigated openCASCADE and it shows promise but getting it to integrate into a native cocoa interface is not currently achievable (By me at any rate). All ideas and suggestions welcome. Should I just forget it and integrate an X11 window, if so any tutorials for doing this?

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• How is executed a SendMessage from a different thread?

  - by Lorenzo

  When we send a message, "if the specified window was created by the calling thread, the window procedure is called immediately as a subroutine". But "if the specified window was created by a different thread, the system switches to that thread and calls the appropriate window procedure. Messages sent between threads are processed only when the receiving thread executes message retrieval code." (taken from MSDN documentation for SendMessage). Now, I don't understand how (or, more appropriately, when) the target windows procedure is called. Of course the target thread will not be preempted (the program counter is not changed). I presume that the call will happen during some wait function (like GetMessage or PeekMessage), it is true? That process is documented in detail somewhere?

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• Max. # of printers allowed for google cloud print

  - by user1858673

  I intend to write an online shopping program using PHP. When the buyer completes an order I want to print the receipt to his/her printer using Google Cloud Print. For that I will need the buyer to shared his/her printer with my Google account. My questions are: 1. Is there an upper bound for the number of printers a Google account is allowed to print to? 2. Is there a daily upper bound for the number of print jobs a Google account is allow? Thanks for reading and thanks for the answers in advance.

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• Reading Matrices in MATLAB and assigning coordinates to the entries

  - by Michael Schofield

  Hi, I'm a bit new to MATLAB. Basically, I have a 25x25 Matrix, complete with various random entries ranging from 0 to 3. I need to write a program that reads this matrix, and assigns x-y coordinates to the entries, so that when I ask for an input of a particular x-y coordinate which has, say an entry of 3, then it will result in an error. I'm a bit overwhelmed - but I understand the general concept of what I'm supposed to be finding. I'm wondering if I should use a plot instead to help me.

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• Include an interface from the same package (Java)

  - by DashRantic

  Hi, I'm new to Java (C++ guy myself) and am trying to compile a simple program (testing different random number algorithms) in Java. I have an interface that I want to use to implement another class with, both of these items are in the same package. So I have two files right now in my "Random" package directory--"RandomInterface.java" and "RandomTest1.java" (which implements RandomInterface). I can use javac to compile RandomInterface.java just fine, but I get the following error when I then try to compile RandomTest1: RandomNew.java:3: cannot find symbol symbol: class RandomClass public class RandomNew implements RandomClass ^ 1 error I declare both files to be part of the same package (Random) as the first line of each file. What do I need to do to include the RandomInterface class into the compile command for RandomTest1? Thanks!

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• iPhone developing FOR jailbroken devices (not USING jailbroken devices!)

  - by Marek

  I would like to dig into developing for jailbroken devices, just to test what the device could do. I would like, for instance, to alter the ipod music based on geo-location, so i have to program a new daemon that runs in background and fetch gps informations at regular interlavs and then make something with them. Longitude, longitude, for instance, does exactly this, even when the device is locked, and then upload the informations on google latidude. I have some experience as an iphone developer, but i'm not sure on where to find documentation to accomplish such a task. I know about the books "iphone open application development" and "the iphone developer's coockbook", but i don't own them and i'm not sure they have what i'm looking for. Any advice on this?

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• NoneType has no attribute Append

  - by Rosarch

  I'm new to Python. I can't understand why a variable is None at a certain point in my code: class UsersInRoom(webapp.RequestHandler): def get(self): room_id = self.request.get("room_id") username = self.request.get("username") UserInRoom_entities = UserInRoom.gql("WHERE room = :1", room_id).get() if UserInRoom_entities: for user_in_room in UserInRoom_entities: if user_in_room.username == username: user_in_room.put() # last_poll auto updates to now whenenever user_in_room is saved else: user_in_room = UserInRoom() user_in_room.username = username user_in_room.put() UserInRoom_entities = [] UserInRoom_entities.append(user_in_room) // error here # name is `user_at_room` intead of `user_in_room` to avoid confusion usernames = [user_at_room.username for user_at_room in UserInRoom_entities] self.response.out.write(json.dumps(usernames)) The error is: Traceback (most recent call last): File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\__init__.py", line 507, in __call__ handler.get(*groups) File "path\to\chat.py", line 160, in get AttributeError: 'NoneType' object has no attribute 'append' How is this possible? I'm setting UserInRoom_entities = [] immediately before that call. Or is something else the None in question?

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• Strange exception phenomenon in Windows 7

  - by Level 2

  I spot some interesting articles about exception handle in CodeProject http://www.codeproject.com/KB/cpp/seexception.aspx After reading, I decided to do some experiment. The first time I try to execute the following code char *p; p[0] = 0; The program died without question. But After several times when I executed the same problem binary code, it magically did fine. Even the following code is doing well. Any clue or explanation? char *p p[1000] = 'd'; cout<<p[1000]<<endl; My O/S is Windows 7 64bit and compiler is VS2008 rc1.

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• Current stock price by using sockets in java

  - by user2976396

  My program is to find the current stock price of a symbol ..this is the code which i m using `String yahoo = "finance.yahoo.com" ; final int httpd = 80; Socket sock = new Socket(yahoo,httpd); PrintWriter out = new PrintWriter( sock.getOutputStream(), true ); BufferedReader in =new BufferedReader(new InputStreamReader( sock.getInputStream() ) ); out.println( "GET http://finance.yahoo.com/q?s=ibm&f=1l HTTP/1.0\r\n\r\n " ); out.println(""); out.flush();` I am just getting the output as ibm .Can anyone please suggest how to get the price.

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• How do you expose a C++ class in the V8 Javascript Engine so it can be created using new?

  - by Steve Hanov

  The official examples of exposing a Point class seem to assume that there will be a fixed number of instances of it in your program. It is not clear how new instances are allocated in the C++ code, when new is called in Javascript. How would you expose a class that can have multiple instances? For example, an Image class: var img1 = new Image( 640, 480 ); var img2 = new Image( 1024, 768 ); img1.clear( "red" ); img2.clear( "black" );

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• Stop node containing subnodes and text in schema

  - by AndyC

  If I have some xml like this: <mynode> <mysubnode> <mysubsubnode>hello world</mysubsubnode> some more text </mysubnode> </mynode> As you can see, mysubnode contains both a subnode and some text data. What I want to know is, is it possible to prevent this happening in a schema? I don't want nodes to contain subnodes and text, just subnodes or text. Is there an option in my xsd I can specify to force this? My program to that uses this xml is written in .NET, so I'll tag it as well incase there's anything of use in .net that I can utilise for this, though I'd much rather that the issue was fixed in the schema itself. Cheers

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• Changing size of a dynamically allocated matrix

  - by user1309174

  Trying to re-size the shape matrix dynamically. This is part of a drawing program where _capacity is the number of shapes drawn on a frame. Get the error in new Shape about _capacity saying expression needs to have a constant value. void ShapeStore::Grow(int minimumCapacity) { _capacity = max (minimumCapacity, 2 * _capacity); if (_capacity) { Shape ***newData = new Shape[_frames][_capacity]; //figure out this int i; for (int k = 0; k < _frames; k++) for (i=0;i<_count;i++) newData[k][i] = _data[k][i]; delete [] _data; _data = newData; } //*/ }

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• Running ARM assembly code in Android

  - by Robert Joseph Dacunto

  I've been following the guide posted here, trying to get this Hello, World program to run on my Samsung Galaxy S3. It's rooted already, and I successfully pushed the "hello" file onto the sdcard. Now when I enter the shell as the superuser (# instead of $), and try to run the file, I get "cannot execute - permission denied". I used chmod 755 hello to see if that would fix it, still nothing. Is there something I'm missing? This is my first time fiddling around with Android, just got the phone, and wanted to see if I could get this to work. Very new to it all. Thanks!

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• What to do if exec() fails?

  - by Grigory

  Let's suppose we have a code doing something like this: int pipes[2]; pipe(pipes); pid_t p = fork(); if(0 == p) { dup2(pipes[1], STDOUT_FILENO); execv("/path/to/my/program", NULL); ... } else { //... parent process stuff } As you can see, it's creating a pipe, forking and using the pipe to read the child's output (I can't use popen here, because I also need the PID of the child process for other purposes). Question is, what should happen if in the above code, execv fails? Should I call exit() or abort()? As far as I know, those functions close the open file descriptors. Since fork-ed process inherits the parent's file descriptors, does it mean that the file descriptors used by the parent process will become unusable?

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• Which is the future of web development: HTML5 or Silverlight(or other RIA framework)?

  - by Morgan Cheng

  My colleagues have a heated debate on what is the future of web development. One side is supporting HTML5 and the other is supporting Silverlight. There is no conclusion of the debate yet. In my humble opinion as a programmer, HTML5 will not improve programming productivity, while Silverlight will. In my understanding, programmers still need to program in JavaScript to take advantage of HTML5. For Silverlight, we can use C# which is static-type language. A lot of coding defects can be found in compilation time. For HTML5, different browsers might still have different behavior even though there is spec. For Silverlight, generally what works in IE will work the same way in other browsers. Just my thoughts. Any idea on how to choose future direction of web development?

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• Macro for search Variabl, Date or value

  - by John

  To whom it may concern Good Day I have an excel work book with 10 sheets. In that work book 1 to 5 rows are header. I would like to search a Value, Variable or Date as I required. If it found then all rows should copy to a new work book. I need button for run macro. Program should ask what I need to search for. If I put a date macro should search all workbook if found all result should copy to a new workbook. Can any one give a solution for this.

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• How do I get the Bake console for CakePHP?

  - by ggfan

  I am having trouble getting the Bake console. I am on windows running xampp. I'm doing the IBM cakphp tutorial. Here is my directory: C:\\ xampp htdocs ibm2(a test project--orginally called cakephp) app cake vendors (etc) It says to To use Bake, cd into the /webroot/app directory and launch the Cake Console: ../cake/console/cake bake. You should be presented with a screen that looks like Figure 2. So I write in my command prompt till I am at: C:\xampp\htdocs\ibm2\app Then I type ../cake/console/cake bake but I get this error: '..' is not recognized as an internal or external command, operable program or batch file. What am I doing wrong? I use the window's command prompt

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• How to put Custom View above built in views in Android?

  - by Lord.F

  Hi All, I am developing a small app for Android. I am creating my own view. I am planning to design the layout to be: <LinearLayout> <MyView> <Button><Button> </LinearLayout> But when I run my program, my custom view will cover the whole screen. Is there anyway to avoid this? I have already tried to add android:layout_width, layout_height to be wrap_content, fill_partent, but no luck.

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• Overlapping elements stop overlapping in IE7 on class change

  - by Gazzer

  On this page http://zenchan.com/program/ When I rollover the right box 2nd from the top suddenly the overlapping (negative margin disappears). What's happening is that a 'hover' class is being added to shift the background sprite. The two yellow boxes are debugging: if the hover class is put their in advance there is no problem. So fundamentally the CSS is not a problem for IE7 but adding the class is. Any ideas what's causing this. I've tried adding haslayout to various elements but to little effect.

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