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• remove a varchar2 string from the middle of table data values

  - by Michelle Daniel

  Data in the file_name field of the generation table should be an assigned number, then _01, _02, or _03, etc. and then .ldf (example 82617_01.pdf). Somewhere, the program is putting a state name and sometimes a date/time stamp, between the assigned number and the 01, 02, etc. (82617_ALABAMA_01.pdf or 19998_MAINE_07-31-2010_11-05-59_AM.pdf or 5485325_OREGON_01.pdf for example). We would like to develop an SQL statement to find the bad file names and fix them. In theory it seems rather simple to find file_names that include a varchar2 data type and remove it, but putting the statement together is beyond me. Any help or suggestions apprecuiated. Something like ........... UPDATE GENERATION SET FILE_NAME (?) WHERE FILE_NAME (?...LIKE '%STRING%');?

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• Changing background color in Android SDK by clicking a button does not work

  - by DavidNg

  I have a simple program which is able to change the background color after clicking a button, but it does not work public class ChangeBackgroundActivity extends Activity { /** Called when the activity is first created. */ Button blueButton; LinearLayout myLO; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myLO=(LinearLayout)findViewById(R.layout.main); blueButton=(Button)findViewById(R.id.button1); blueButton.setOnClickListener(new OnClickListener() { public void onClick(View arg0) { // TODO Auto-generated method stub myLO.setBackgroundColor(0x0000FF); //blue color code #0000FF } }); } }

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• Subsonic foreign key returning collection?

  - by Shaul

  I'm just writing my first "Hello World" program using Subsonic, for which I've thrown together a simple little Customer/Invoice/InvoiceItem/Product database. The connection was successfully made to the DB, and it generated all the right ActiveRecord classes. But for some reason, the Invoice class has a property called Customers, which returns a collection of Customer objects, even though the Invoice table has a CustomerID field which has a foreign key to the Customer table. I would have expected a Customer property returning a single Customer object. I must be doing something wrong - but what?

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• Linkage Error with Inherited Class

  - by metdos

  I have static library and another program which uses it. In the static library If I define header without inheretence it works fine. class TcpCommunication On the other hand If I use inheretence with a QT class, class TcpCommunication:public QTcpServer I'm getting linkage error when I compiling code which uses this static library. >MStoDKAPId.lib(TcpCommunication.obj) : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual __thiscall QTcpServer::~QTcpServer(void)" (__imp_??1QTcpServer@@UAE@XZ) referenced in function "public: virtual __thiscall TcpCommunication::~TcpCommunication(void)" (??1TcpCommunication@@UAE@XZ) What can be the problem? Thanks.

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• I wired up a z 80 using telephone wire and put a jump to 0000 0000 0000 0000

  - by john

  I put 1100 0011 0000 0000 0000 0000 in the 2764 eprom --- this is supposed to test the z80 -- I have a 555 timer running at 500 khz. Can this small program work with the z80 ? I looked at the address pins on a m465 oscilloscope. The address shows highs up to 0100 0000. I think it should only count to 0000 0000 0000 0011. Can the z80 be tested? The Santa Clara Valley also made the lm1871 radio control chip that could not show a high or a low without completing the entire rc loop.

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• Clone a lua state

  - by hbxfnzwpf

  Recently, I have encountered many difficulties when I was developing using C++ and Lua. My situation is: for some reason, there can be thousands of Lua-states in my C++ program. But these states should be same just after initialization. Of course, I can do luaL_loadlibs() and lua_loadfile() for each state, but that is pretty heavy(in fact, it takes a rather long time for me even just initial one state). So, I am wondering the following schema: What about keeping a separate Lua-state(the only state that has to be initialized) which is then cloned for other Lua-states, is that possible?

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• Python Terminated Thread Cannot Restart

  - by Mel Kaye

  Hello, I have a thread that gets executed when some action occurs. Given the logic of the program, the thread cannot possibly be started while another instance of it is still running. Yet when I call it a second time, I get a "RuntimeError: thread already started" error. I added a check to see if it is actually alive using the Thread.is_alive() function, and it is actually dead. What am I doing wrong? I can provide more details as are needed.

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• Problem using AudioRecord with 8-bit encoding in android

  - by maxsap

  Hello, I have made an application that records from the phones microphone using the AudioRecord and 16-bit encoding, and I am able to playback the recording. For some compatibility reason I need to use 8-bit encoding, but when I try to run the same program using that encoding I keep getting an Invalid Audio Format. my code is : int bufferSize = AudioRecord.getMinBufferSize(11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_8BIT); AudioRecord recordInstance = new AudioRecord( MediaRecorder.AudioSource.MIC, 11025, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_8BIT, bufferSize); Any one knows what is the problem? according to the documentation AudioRecord is capable of 8-bit encoding. thanks in advanced maxsap.

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• How do I get the CoreData Debug argument to output to the console?

  - by radesix

  According to Apple documentation on debugging Core Data it says we should be able to pass an argument to the application which will output the SQL core data sends to SQLite. I have gone into the arguments tab of my executable in XCode and specified the argument: -com.apple.CoreData.SQLDebug 1 However, I see no SQL in the console. I then tried to use this parameter in the CoreDataBooks application provided by Apple just in case there was some other issue in MY program. Even in Apple's example I get no SQL output in the console. Am I doing something wrong? Is Apple's documentation wrong? Should I be looking someplace other than the console? Has anyone else had success with this argument?

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• Global variables in hadoop.

  - by Deepak Konidena

  Hi, My program follows a iterative map/reduce approach. And it needs to stop if certain conditions are met. Is there anyway i can set a global variable that can be distributed across all map/reduce tasks and check if the global variable reaches the condition for completion. Something like this. While(Condition != true){ Configuration conf = getConf(); Job job = new Job(conf, "Dijkstra Graph Search"); job.setJarByClass(GraphSearch.class); job.setMapperClass(DijkstraMap.class); job.setReducerClass(DijkstraReduce.class); job.setOutputKeyClass(IntWritable.class); job.setOutputValueClass(Text.class); } Where condition is a global variable that is modified during/after each map/reduce execution.

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• I love programming but i also want to learn hardware. [closed]

  - by user167082

  I like programming so much, i did it since i was 10, and i believe that studying computer science will make a lot of money as well as i love it. However I also want to learn hardware. I don't only want to do programming all the time without knowing the architecture of device that i program. I asked my teacher, and she said that if I get into computer science, i won't learn anything about hardware, is it true?(She graduated from u-dub) In the other hand, my math teacher told me to get into electrical engineering, since it also contain programming. The thing is that i want to emphasize my study to programming while learning some about hardware. What is major that suits me the best? Can i take some hardware courses if I get into computer science major? Thanks a lot.

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• glBlendFunc() with 32-bit RGBA textures

  - by oldSkool

  I have a texture that is semi-transparent with varying opacity at different locations. I have the main texture bitmap, and a mask bitmap. When the program executes, the alpha values from the mask bitmap are loaded into the alpha values of the main texture bitmap. The areas that I want to be transparent have a value of 255 alpha, and the areas that I want to remain totally opaque have values of 0 alpha. There are in-between values also for mid-transparency. I have tried all manner of glBlendFunc() settings, but it is either completely invisible or it acts on the RGB colors of the source texture. Any help out there?

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• Which is faster in memory, ints or chars? And file-mapping or chunk reading?

  - by Nick

  Okay, so I've written a (rather unoptimized) program before to encode images to JPEGs, however, now I am working with MPEG-2 transport streams and the H.264 encoded video within them. Before I dive into programming all of this, I am curious what the fastest way to deal with the actual file is. Currently I am file-mapping the .mts file into memory to work on it, although I am not sure if it would be faster to (for example) read 100 MB of the file into memory in chunks and deal with it that way. These files require a lot of bit-shifting and such to read flags, so I am wondering that when I reference some of the memory if it is faster to read 4 bytes at once as an integer or 1 byte as a character. I thought I read somewhere that x86 processors are optimized to a 4-byte granularity, but I'm not sure if this is true... Thanks!

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• Need help with displaying the message correctly in the pole display always starting at the beginning

  - by SA

  Hi, I am using an HP RS232 pole display with the following setting: Char type: USA/Europe (default) Command mode: EPSON (default) Baud rate: 9600, n , 8, 1 (default?) Passthru None (Default) Here's the code using System.IO.Ports; private SerialPort port; port = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One); port.Handshake = Handshake.None; Port.WriteLine("Welocome to something something"); It has 2 lines consisting of 20 characters each with a total of 40 characters. I have no control how and where the characters get displayed. I would like it to always begin on line 1 position 1 but as I said earlier how would I be able to do that. The same program if I run again and again it moves a character to the left. I have set it to accept ASCII char set and so I am able to type as is visble in the Writeline message

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• Mimic Sublime Text multiselect in Notepad++ using autohotkey

  - by capnhud

  In sublime text 2 you can multi select(cursor) lines by holding ctrl+alt+arrow key (up/down). In notepad++ you can accomplish the same thing by holding ctrl and clicking the additional lines(areas) you would like to edit. I figured I could use a autohotkey script to accomplish the same functionality. So I tried #IfWinActive, ahk_class Notepad++ ^!Down::^Click but each time that I try to load the script I get Error at Line 2 Line Text: ^Click Error: This line does not contain a recognized action the program will exit then I tried #IfWinActive, ahk_class Notepad++ ^!Down::send ^Click but that shows up as ETXClick in notepad++ What more do I need to get this script to work only for Notepad++

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• Visual Studio 2010 debug minidump

  - by Snake

  Hi all, Consider the following code (written with Visual Studio 2010 and .NET 4.0) using System; namespace DumpTester { class Program { static void Main(string[] args) { int test = new Random().Next(); Console.WriteLine(test + new Random().Next()); Test(); } private static void Test() { throw new Exception(); } } } When running outside of Visual Studio you get this nice window of Microsoft Windows 7 that it is looking for a solution. Obviously, since this is my app, there is none. At that point I create a full dump file of my application with for example Process Explorer. I then open that dmp file from its location and try to debug. But whatever I try, it can't find the location of the source symbols. I tried putting the pdb next to the dump but it just doesn't find it. What am I doing wrong?

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• making a jar file for console

  - by user472221

  Hi I have a program without a GUI and I use console! So first I read a line from a user from console BufferedReader userReader = new BufferedReader(new InputStreamReader(System.in)); and then I will write an answer for the user in the console! System.out.println("Server:"+output); I want to create a jar file for it ! but how can i show my console in jar file with out using GUI? please help me thanks.

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• Visual Studio stops debugging with no errors unexpectedly

  - by HeavyWave

  I am debugging a project and Visual Studio stops debugging and closes the program on the following line with no exceptions or error messages (I have enabled notifications for any thrown exceptions in options): var query = Session.Linq<RSS>() .Where(x => x.LastRetrieved <= date || x.LastRetrieved == null) .Where(x => x.Moderated); Where Session.Linq refers to LINQ2NHibernate. Anyway, the question is: what are the possible reasons for such behavior? Tested both on VS 2010 and 2008 - they behave identically just falling out of debugging.

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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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• How do I test against a large number of regular expressions quickly and know which one matched?

  - by Jack

  I'm writing a program in .net where the user may provide a large number of regular expressions. For a given string, I need to figure out which regular expression matches that string (if more than one matches, I just need the first one that matches). However, if there are a large number of regular expressions this operation can take a very long time. I was somewhat hoping there would be something similar to flex for .net that would allow me to specify a large number of regular expressions yet quickly (O(n) according to Wikipedia for n = len(input string)) figure out which regular expression matches. Also, I would prefer not to implement my own regular expression engine :).

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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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• How do I synchronize GUI-Elements?

  - by anonymous2500

  Hello, I have a little problem with my java-program. I wanna use Observer, to synchronize two GUIs. But I can't synchronize the JComponent / JButton elements. For example: I have a GUI-Class which implements the Observer-Class: public class GUI extends JFrame implements Observer I have a second "GUI"-Class which extends the JButton-Class and makes changes on a specific Button-Element. public class Karte extends JButton{ ... this.setEnabled(false); ... How do I synchronize this Button via Observable? I have already tried to use "extends Observable" in this class, but the "setEnabled()" method is explicit for the JButton-Class, which is not Observable! Can someone help? Thanks.

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• How to use all the cores in Windows 7?

  - by Anon

  I am not sure if this belongs to Stackoverflow or Superuser but I thought I would ask here. I have a console based application written in C which currently takes about an hour to terminate in Windows 7 64-bit OS. The task manager reports that the application is using only 25% of the available CPU. I would like to reduce the run time by increasing cpu usage. Is there any way to let the application use all four cores (the laptop has Core i5) instead of just one? I am assuming that task manager reports 25% because only one core is allocated to the program.

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• Perl module for parsing natural language time duration specifications (similar to the "at" command)?

  - by Ryan Thompson

  I'm writing a perl script that takes a "duration" option, and I'd like to be able to specify this duration in a fairly flexible manner, as opposed to only taking a single unit (e.g. number of seconds). The UNIX at command implements this kind of behavior, by allowing specifications such as "now + 3 hours + 2 days". For my program, the "now" part is implied, so I just want to parse the stuff after the plus sign. (Note: the at command also parses exact date specifications, but I only want to parse durations.) Is there a perl module for parsing duration specifications like this? I don't need the exact syntax accepted by at, just any reasonable syntax for specifying time durations. Edit: Basically, I want something like DateTime::Format::Flexible for durations instead of dates.

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• Custom Control Events in C#

  - by pm_2

  I'm trying to create a custom control and need to raise an event from it. The idea is to raise an event at the end of the click event (OnAfterClick). I found one or two tutorials on doing this, but am clearly missing a step somewhere; I have the following. In the control: public class AfterClickEventArgs : EventArgs { ... } public partial class MyButton : CommandButton { public delegate void AfterClickEvnt(object sender, AfterClickEventArgs e); public event AfterClickUpdatedEvnt AfterClick; } protected override void OnClick(EventArgs e) { ... Processing here ... AfterClickEventArgs myArgs = new AfterClickEventArgs(); AfterClick(this, newArgs); } In the program using the control: In InitializeComponent(): this.MyButton.AfterClick += new System.EventHandler(this.cmdMyButton_Click); This line is giving me a compile error (cmdMyButton_Click does exist). It tells me: Cannot implicitly convert type 'System.EventHandler' to 'Namespace.MyButton.AfterClick' Can anyone tell me what I'm missing, or misunderstanding about this, please?

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