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  • why do I need the @ for setting variable value

    - by Saad
    I'm a little confused about scope of variables, in ruby I wrote a test program: class Test attr_reader :tester def initialize(data) @tester = data end def getData tester end end puts Test.new(11).getData now this works fine, the attr_reader, but my confusion is that since I've define attr_reader :tester then why can't I go tester = data rather then @tester = data, because when retrieving the data in getData I only have to write tester and not @tester

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  • PHPUnit not working with netbeans 7.2.1

    - by user1578653
    I have just upgraded to netbeans 7.2.1 and phpunit is not working. I get the error:- Cannot run program C:\wamp\bin\php\php5.3.5\PEAR\phpunit-skelgen": CreateProcess error=193, %1 is not a valid Win32 application" when I try to generate PHPUnit tests. The only thing I can think of is that I seem to have a 64 bit version of netbeans installed - could this be the problem? If so, can anyone point me to a 32 bit version, because I couldn't see one on the website?

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  • Registry Problem

    - by Dominik
    I made a launcher for my game server. (World of Warcraft) I want to get the installpath of the game, browsed by the user. I'm using this code to browse, and get the installpath, then set some other strings from the installpath string, then just strore in my registry key. using System; using System.Drawing; using System.Reflection; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using Microsoft.Win32; using System.IO; using System.Net.NetworkInformation; using System.Diagnostics; using System.Runtime; using System.Runtime.InteropServices; using System.Security; using System.Security.Cryptography; using System.Text; using System.Net; using System.Linq; using System.Net.Sockets; using System.Collections.Generic; using System.Threading; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } string InstallPath, WoWExe, PatchPath; private void Form1_Load(object sender, EventArgs e) { RegistryKey LocalMachineKey_Existence; MessageBox.Show("Browse your install location.", "Select Wow.exe"); OpenFileDialog BrowseInstallPath = new OpenFileDialog(); BrowseInstallPath.Filter = "wow.exe|*.exe"; if (BrowseInstallPath.ShowDialog() == DialogResult.OK) { InstallPath = System.IO.Path.GetDirectoryName(BrowseInstallPath.FileName); WoWExe = InstallPath + "\\wow.exe"; PatchPath = InstallPath + "\\Data\\"; LocalMachineKey_Existence = Registry.LocalMachine.CreateSubKey(@"SOFTWARE\ExistenceWoW"); LocalMachineKey_Existence.SetValue("InstallPathLocation", InstallPath); LocalMachineKey_Existence.SetValue("PatchPathLocation", PatchPath); LocalMachineKey_Existence.SetValue("WoWExeLocation", WoWExe); } } } } The problem is: On some computer, it doesnt stores like it should be. For example, your wow.exe is in C:\ASD\wow.exe, your select it with the browse windows, then the program should store it in the Existence registry key as C:\ASD\Data\ but it stores like this: C:\ASDData , so it forgots a backslash :S Look at this picture: http://img21.imageshack.us/img21/2829/regedita.jpg My program works cool on my PC, and on my friends pc, but on some pc this "bug" comes out :S I have windows 7, with .NEt 3.5 Please help me.

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  • Why an object declared in method is subject to garbage collection before the method returns?

    - by SiLent SoNG
    Consider an object declared in a method: public void foo() { final Object obj = new Object(); // A long run job that consumes tons of memory and // triggers garbage collection } Will obj be subject to garbage collection before foo() returns? UPDATE: Previously I thought obj is not subject to garbage collection until foo() returns. However, today I find myself wrong. I have spend several hours in fixing a bug and finally found the problem is caused by obj garbage collected! Can anyone explain why this happens? And if I want obj to be pinned how to achieve it? Here is the code that has problem. public class Program { public static void main(String[] args) throws Exception { String connectionString = "jdbc:mysql://<whatever>"; // I find wrap is gc-ed somewhere SqlConnection wrap = new SqlConnection(connectionString); Connection con = wrap.currentConnection(); Statement stmt = con.createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY); stmt.setFetchSize(Integer.MIN_VALUE); ResultSet rs = stmt.executeQuery("select instance_id, doc_id from crawler_archive.documents"); while (rs.next()) { int instanceID = rs.getInt(1); int docID = rs.getInt(2); if (docID % 1000 == 0) { System.out.println(docID); } } rs.close(); //wrap.close(); } } After running the Java program, it will print the following message before it crashes: 161000 161000 ******************************** Finalizer CALLED!! ******************************** ******************************** Close CALLED!! ******************************** 162000 Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: And here is the code of class SqlConnection: class SqlConnection { private final String connectionString; private Connection connection; public SqlConnection(String connectionString) { this.connectionString = connectionString; } public synchronized Connection currentConnection() throws SQLException { if (this.connection == null || this.connection.isClosed()) { this.closeConnection(); this.connection = DriverManager.getConnection(connectionString); } return this.connection; } protected void finalize() throws Throwable { try { System.out.println("********************************"); System.out.println("Finalizer CALLED!!"); System.out.println("********************************"); this.close(); } finally { super.finalize(); } } public void close() { System.out.println("********************************"); System.out.println("Close CALLED!!"); System.out.println("********************************"); this.closeConnection(); } protected void closeConnection() { if (this.connection != null) { try { connection.close(); } catch (Throwable e) { } finally { this.connection = null; } } } }

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  • MutiHomed computers and rmi?

    - by ipkiss
    Hello, I am writing a program using rmi to connect server and clients together and got the following issue: My rmi server support both ethernet and wifi mode rmi clients can connect to the server either vi ethernet or wifi depending. That because s*ome clients can only run via ethernet* and some can only run via wifi. My question is: how can I make my rmi server connect to all clients in such situation? Thanks.

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  • write system call to file desciptor ZERO

    - by shadyabhi
    int main ( ) { char C[] = "Hello World"; write(0,C,sizeof(C)); return 0; } In the above program, I am writing to File descriptor ZERO which I suppose by default is STDIN.. Then why I am I getting output at STDOUT? shadyabhi@shadyabhi-desktop:~$ ./a.out Hello Worldshadyabhi@shadyabhi-desktop:~$

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  • how to go back to first if statement if no choices are valid - python

    - by wondergoat77
    how can i have python move to the top of an if statement if nothing is satisfied correctly i have a basic if/else statement like this: print "pick a number, 1 or 2" a = int(raw_input("> ") if a == 1: print "this" if a == 2: print "that" else: print "you have made an invalid choice, try again." what i want is to prompt the user to make another choice for 'a' this if statement without them having to restart the entire program, but am very new to python and am having trouble finding the answer online anywhere.

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  • java background task

    - by markovuksanovic
    I was wondering which would be the most efficient approach to implement some kind of background task in java (I guess that would be some kind of nonblocking Threads). To be more precise - I have some java code and then at some point I need to execute a long running operation. What I would like to do is to execute that operation in the background so that the rest of the program can continue executing and when that task is completed just update some specific object which. This change would be then detected by other components.

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  • iPhone iOS 6 BonjourWeb Xcode 4.5 "Cancel Button Error

    - by Don Larson
    I'm working with the source code for BonjourWeb using iOS 6 and Xcode 4.5. BonjourWeb Source code for Xcode In BonjourWebAppDelegate.m, the setting for showCancelButton:YES in the "applicationDidFinishLaunching: application:" method causes the program to crash when the Cancel button is clicked in the app's browser with the error: 2012-10-27 13:07:45.309 BonjourWeb[1762:c07] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* +[NSNetService dictionaryFromTXTRecordData:]: cannot convert nil to a dictionary.' How can I rectify this to work properly? Thank you. Don

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  • Usage of Document() function in XSLT 1.0

    - by infant programmer
    I am triggering the transformation using a .NET code, unless I add "EnableDocumentFunction" property to the XSL-Setting, the program throws error saying .. "Usage of Document() function is prohibited", Actually the program is not editable and a kind of read-only .. is it possible to edit the XSL code itself so that I can use document() function?? The sample XSL and XMLs are Here: Sample XML : <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:msxsl="urn:schemas-microsoft-com:xslt" exclude-result-prefixes="msxsl" > <xsl:output method="xml" indent="yes"/> <xsl:template match="@* | node()"> <xsl:copy> <xsl:apply-templates select="@* | node()"/> </xsl:copy> </xsl:template> <xsl:variable name="State_Code_Trn"> <State In="California" Out="CA"/> <State In="CA" Out="CA"/> <State In="Texas" Out="TX"/> <State In="TX" Out="TX"/> </xsl:variable> <xsl:template name="testing" match="test_node"> <xsl:variable name="test_val"> <xsl:value-of select="."/> </xsl:variable> <xsl:element name="{name()}"> <xsl:choose> <xsl:when test="document('')/*/xsl:variable[@name='State_Code_Trn'] /State[@In=$test_val]"> <xsl:value-of select="document('')/*/xsl:variable[@name='State_Code_Trn'] /State[@In=$test_val]/@Out"/> </xsl:when> <xsl:otherwise> <xsl:text>Other</xsl:text> </xsl:otherwise> </xsl:choose> </xsl:element> </xsl:template> </xsl:stylesheet> And the sample XML : <?xml version="1.0" encoding="utf-8"?> <root> <test_node>California</test_node> <test_node>CA</test_node> <test_node> CA</test_node> <test_node>Texas</test_node> <test_node>TX</test_node> <test_node>CAA</test_node> <test_node></test_node> </root>

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  • How is "clean" testing done on the Macintosh without virtualization?

    - by Schnapple
    One of the things I've run across on Windows is when a web browser plugin or program you're developing makes an assumption that something is installed that, by default, isn't always present on Windows. A perfect example would be .NET - a whole lot of people running Windows XP have never installed any versions of .NET and so the installer needs to detect and remedy this if necessary. The way I've been testing this in Windows is to have a virtual machine with a snapshot of a clean, patched, but otherwise untouched install of XP or Vista or 7 or whatever. When I'm done testing I just discard any changes since the snapshot. Works great. I'm now developing something for the Macintosh, a platform which is very new to me, and I'm seeing that virtualization does not appear to be an option. It's explicitly forbidden in the EULA of Mac OS X, it's only allowed from Mac OS X Server, which seeing as how I'm targeting an end product is of no use to me, and the one program I see which can virtualize it - VirtualBox - only supports the server and actively nukes any discussion of running the consumer/client version of Mac OS X. And the only instructions I find anywhere on the topic seem to involve the use of "hacking" programs which is very much incompatible with the full-time gig I'm trying to do this for. So it looks like virtualization is out, but at various points I'm going to want or need to simulate what it's like to install and run this software on a "clean" Macintosh. How do people usually do this? Just buy multiple Macintoshes and use Time Machine? Am I thinking about this all wrong and everything Just Works? To be clear I'm not trying to run Mac OS X on a Windows machine. I have a Macintosh, I'm fine with virtualizing Mac OS X on Apple hardware, I'm just not seeing a route to making the non-Server version do this. I'm aware that Mac OS X Server can be virtualized but that's not what I'm going for. I'm aware that there are unsanctioned/unsupported methods of making Mac OS X run in virtualization programs like VirtualBox but for legal reasons I am not interested in those. My question is not "how can I do this?" but rather "so this thing I do on Windows seems to not be possible, generally, on the Macintosh, so what do people do to achieve what I'm going for?"

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  • Svn auto updater

    - by uzay95
    I am writing my code in my virtual machine and always committing the folder that contains published web site to the free svn server. There is also another remote machine which is test server. I would like to make auto update in the remote machine. Is there any program can make auto update in every 30 seconds?

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  • Is there any way to run "dir" directly?

    - by Mason Wheeler
    In my answer to this question, where the asker needed a fast way to get a directory listing of a folder on a network drive, I suggested using the DOS "dir" command. Unfortunately, it's a command, not a program, so you can't execute it with CreateProcess and so I had to put it in a batch file. I don't really like that solution. It feels like a hack to me. Does anyone know a way to run dir from Delphi instead of from an external batch file?

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  • sending sms in j2me

    - by monika53
    hi..i wrote a sending sms program through wireless messaging in j2me..but whenever i am sending message they are asking permission for sending mssg.... how to resolve this..plz help me its urgent....

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  • Does Windows CE support hash tables?

    - by Bryan
    Quick question of does Windows CE support hash tables? I have a program that I'm modifying and adding to a device that uses Windows CE and I was wondering if CE supported hash tables since it is used in the original software.

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  • New Bluetooth API question

    - by Ralphz
    I have written a small app that puts my bluetooth in discoverable mode for a long time (G1 - API 1.6). I use that along with small program on windows to lock/unlock the computer if the phone is close by. Recently i try to port this app to my nexus one but it seems like i have to pop up the message every 300s to enable device to go to discoverable mode. does anyone know how i can suppress that? I'm ok with saying ok for the first time but not every 300s :)

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  • Spinning a 3D model in C#

    - by icemanind
    How do I take a 3D model that I created in 3D Studio Max and put it into my Winform C# program and make it spin? I'd prefer not to use DirectX if possible. I don't want anything complex. I simply want my model to rotate along the X axis. Thats it. Thanks

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