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• Class declaration bug

  - by aladine

  Please advise me what's wrong with this class declaration: ExchEngine.java package engine; public class ExchEngine { public ExchEngine() { } public static void main(String[] args) { ExchEngine engine=new ExchEngine() ; } } When I compile this file, I always get exception: java.lang.NoClassDefFoundError: test_engine/ExchEngine Caused by: java.lang.ClassNotFoundException: test_engine.ExchEngine at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) Exception in thread "main" This seems very weird that ExchEngine.java is inside a package and it cannot run itself. Thanks for any help.

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• bug in NHunspell spelling checker

  - by Nikhil K

  I am using NHunspell for checking spelling.I added NHunspell.dll as a reference to my asp.net page.I added the namespace System.NHunspell. The problem i am facing is related to IDisposible. I put the downloaded code of NHunspell inside the button event. protected void Button1_Click(object sender, EventArgs e) { using (Hunspell hunspell = new Hunspell("en_us.aff", "en_us.dic")) { bool correct = hunspell.Spell("Recommendation"); var suggestions = hunspell.Suggest("Recommendatio"); foreach (string suggestion in suggestions) { Console.WriteLine("Suggestion is: " + suggestion); } } // Hyphen using (Hyphen hyphen = new Hyphen("hyph_en_us.dic")) { var hyphenated = hyphen.Hyphenate("Recommendation"); } * using (MyThes thes = new MyThes("th_en_us_new.idx", "th_en_us_new.dat")) { using (Hunspell hunspell = new Hunspell("en_us.aff", "en_us.dic")) { ThesResult tr = thes.Lookup("cars", hunspell); foreach (ThesMeaning meaning in tr.Meanings) { Console.WriteLine(" Meaning: " + meaning.Description); foreach (string synonym in meaning.Synonyms) { Console.WriteLine(" Synonym: " + synonym); } } } } The * shown above is the line of error.The error is: " type used in a using statement must be implicitly convertible to 'System.IDisposable'". Also there is a warning on that line :"'NHunspell.MyThes.MyThes(string, string)' is obsolete: 'idx File is not longer needed, MyThes works completely in memory'"; Can any one help me to correct this???

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• Removing entity bug

  - by Greg

  hello, I am trying out the ria services and I am experiencing this problem that seems very strange to me. I am creating a new entity of type "House" and add it to context without saving the context so the id of the new entity is 0, after i remove this entity and add another new entity of type "House" again and again without saving the context, here comes the weird part, now I have an entity of type "City" which holds entityset of all "Houses" in that city, so to put the newly created entity "House" into the city i do something like this - house.City = city, where house is type "House" and city is type "City", afte this step a check the context and suddenly there are 2 entities of type "House" with id 0, one of them is the one I have deleted at the beginning. Any idea what is causing this and how to fix it?? thank you Greg

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• If I exchange the CPU, must I reinstall the OSes? (swapping cpus from one *nix-like to another)

  - by dag729

  Hi, as suggested by the title, I want to change CPU: actually I have two computers, one with Ubuntu running on an AMD Athlon 64 dual core 5200+ and the other with FreeBSD running on an AMD Sempron single core LE-1250. I would like to swap (I am not sure that this is the correct term...) the CPUs from one computer to the other one, that is take the dual core from the ubuntu pc and put it inside the freebsd pc and viceversa. The mobo is the same. Do you think I will encounter problems?

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• [C#] dotNet 4.0 Clipboard bug?

  - by Nayan

  Try this: 1. Create an app in VS Express Edition 2010 (.NET 4.0). 2. Put these lines in the code wherever u like - string text = Clipboard.GetText(); MessageBox.Show(text); 3. Copy some ANSI text (for simplicity) from notepad. 4. Run the app and see the result. I see "Clipboard.GetText()" (without quotes) instead of actual data! Can anyone confirm if this happens in Pro/Ultimate editions too?

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• Simple dynamic memory allocation bug.

  - by M4design

  I'm sure you (pros) can identify the bug's' in my code, I also would appreciate any other comments on my code. BTW, the code crashes after I run it. #include <stdlib.h> #include <stdio.h> #include <stdbool.h> typedef struct { int x; int y; } Location; typedef struct { bool walkable; unsigned char walked; // number of times walked upon } Cell; typedef struct { char name[40]; // Name of maze Cell **grid; // 2D array of cells int rows; // Number of rows int cols; // Number of columns Location entrance; } Maze; Maze *maz_new() { int i = 0; Maze *mazPtr = (Maze *)malloc(sizeof (Maze)); if(!mazPtr) { puts("The memory couldn't be initilised, Press ENTER to exit"); getchar(); exit(-1); } else { // allocating memory for the grid mazPtr->grid = (Cell **) malloc((sizeof (Cell)) * (mazPtr->rows)); for(i = 0; i < mazPtr->rows; i++) mazPtr->grid[i] = (Cell *) malloc((sizeof (Cell)) * (mazPtr->cols)); } return mazPtr; } void maz_delete(Maze *maz) { int i = 0; if (maz != NULL) { for(i = 0; i < maz->rows; i++) free(maz->grid[i]); free(maz->grid); } } int main() { Maze *ptr = maz_new(); maz_delete(ptr); getchar(); return 0; } Thanks in advance.

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• Java - simple division in Java ---> bug?!

  - by msr

  Hello, Im astonished. Im trying this simple calculation in a Java application: System.out.println("b=" + (1 - 7/10)); Obviously Im wainting for "b=0.3" in the output but here's what I get: b=1 What?! Why this happens? If I make: System.out.println("b=" + (1-0.7)); I get the right result which is "b=0.3". What's going wrong here? Thanks!

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• insertNewObjectForEntityForName:inManagedObjectContext: returning NSNumber bug?

  - by beinstein

  I'm relatively well versed in CoreData and have been using it for several years with little or no difficulty. For the life of me, I can't figure out why insertNewObjectForEntityForName:inManagedObjectContext: is all of a sudden returning some sort of strange instance of NSNumber. GDB says the returned object is of the correct custom subclass of NSManagedObject, but when I go to print a description of the NSManagedObject itself, I get the following error: *** -[NSCFNumber objectID]: unrecognized selector sent to instance 0x3f26f50 What's even stranger, is that I'm able to set some relationships and attributes using setValue:forKey: and all is good. But when I try to set one specific relationship, I get this error: *** -[NSCFNumber entity]: unrecognized selector sent to instance 0x3f26f50 I've tried everything from clean all targets, to restarting both mac and iPhone, even editing the model so that the relationship in question is to-one instead of to-many. No matter what I do, the same problem appears. Has anyone ever seen anything like this before?

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• Bug in Mathematica's Integrate with PrincipalValue->True

  - by Janus

  It seems that Mathematica's handling of principal value integrals fails on some corner cases. Consider these two expressions (which should give the same result): Integrate[UnitBox[x]/(x0 - x), {x, -Infinity, Infinity}, PrincipalValue -> True, Assumptions -> {x0 > 0}] /. x0 -> 1 // Simplify Integrate[UnitBox[x]/(x0 - x) /. x0 -> 1, {x, -Infinity, Infinity}, PrincipalValue -> True] In Mathematica 7.0.0 I get I Pi+Log[3] Log[3] Has this been fixed in later versions? Does anybody have an idea for a (more or less) general workaround?

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• Snow Leopard connecting to Unbuntu 10.04 through Samba failure -- need help fixing.

  - by Chris Altman

  I have a Ubuntu 10.04 web server. I want to connect to it with my OSX 10.6 machine and Finder. I have installed openSSH and Samba on the Ubuntu machine. In my smb.conf I have a Share Definition: [www] comment = Development Computer WWW path = /var/www writeable = yes browseable = yes allow hosts = 192.168.1. I can connect to the machine through Finder using a non-root user. When I attempt to add files thought Finder I get an "Insufficient Permissions" error. Please help. I am not sure if the issue is in the Samba configuration or OSX 10.6 Thank you

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• IE bug with TD's tables and whitespace?

  - by mark smith

  Hi there, I have a page that is using tables, in FF etc it works perfect, but in IE7 it causes issues, its basically where the four corners have a td and and img (its a rounded corner form) .. if i remove the whitespace from the document it fixes the issue.. What actually happens is that it messes up the tables.. it puts a thin white line between the upper tr that holds the 2 corners and the next tr I need to remove the the whitespace between the img and the TD, is there a better work around, as i have lots and not only that if i reformat the document the problem returns.. here is a simple example.. <table width="100%" height="418" border="0" cellpadding="0" cellspacing="0" bgcolor="#F04A23" style="margin: 0px; padding: 0px"> <tr> <td width="12" align="left" valign="top"> <img src="content/images/corner_left.gif" width="12" height="12" /> </td> as you can see there is white space between img and td... and i remove it so it looks like this <img src="content/images/corner_left.gif" width="12" height="12" /></td> the problem is gone, (notice the td and image are right next to each other) Any ideas, i tried setting all sorts of css, padding 0px, margins 0px etc ... Any ideas really appreciated

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• My javascript to jQuery translation has a bug

  - by donpal

  My guess is that this javascript just finds the div called divid and then uses it with the sendit function. var somevalue = 19; if (navigator.appName.indexOf("Microsoft") != -1) { thediv = window["divid"]; } else { thediv = document["divid"]; } thediv.sendit(somevalue); I would imagine in jQuery it would look something as simple as this: var somevalue = 19; $('divid').sendit(somevalue); But it's not working!! What could I be missing? I should say that it's in the middle of other javascript code, could that be a problem?

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• css + first load bug + min-height

  - by Henry

  We forked an editor for upcoming release of our CMS. See: http://tinyurl.com/ylbtns2 The editor uses the css of the current template and loads an additional fix.css (inside the iframe) to override some rules: * { background-image: none !important; min-height: 0px !important; } #breadcrumbs, #content .sidebar, #footer, #header, #search_form { display: none; } #content { margin: 0px; width: 100%; } The problem: on first load the "min-height: 0px !important;" seems not to work - on second load the height of the editor iframe is 100px like it should be. Other rules like no background (fix.css) are working on first load and get overridden.

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• Is this a Java DateFormat bug?

  - by anonymous

  The pattern is "dd-MM-yyyy" I think the string "01-01-2010mwwwwwwwwwwwwwww" does not satisfy the pattern, but the following code shows the contrary. Anyone can explain why? public static void main(String[] args) throws Exception { SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy"); Date date = df.parse("01-01-2010mwwwwwwwwwwwwwww"); System.out.println(date); } Thanks

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• jQuery slide up/down on hover bug

  - by Eirik Lillebo

  Hi! I have one large div with one smaller div inside it. The smaller div is at first displayed as hidden. When the user hovers the mouse over the large container-div the smaller div is animated in with the show/hide-functions. So far everything works fine. However. The smaller div is animated in from the bottom - so if I let the cursor hover over the container at the very bottom, it's hovering over the animation of the smaller div while it's sliding in. So now the cursor is hovering over the smaller div instead of the larger div, and thus triggering the hide-function on the smaller div. This creates an infinite loop of show/hide calls as the smaller div slides in and out of where the cursor is pointing. Any ideas how to avoid this and not break the hovering on the container as the smaller div enters?

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• jQuery Accordion + OL + IE6 bug

  - by DA

  Sample page: http://jsbin.com/ohuze/2 This is a simple jQuery UI Accordion. Each accordion panel has an UL (an OL works the same) with this markup: <ol> <li><a href="">Lorep ipsum dolor lorem ipsum dolor lorem ipsum dolor</a>?</li> <li><a href="">Lorep ipsum dolor lorem ipsum dolor lorem ipsum dolor</a>?</li> </ol> In IE6, you'll see that the <a> tag appears to be getting rendered as a block element, so the question mark ends up being pushed outside and not at the end of the line of text. In addition, the bullet and/or list item number is now bottom-aligned with the text rather than top-aligned. I've narrowed it down to the javascript that executes to make the accordion. It's not an issue with jQuery's CSS as disabling that, alone, doesn't resolve the issue. Anyone know what might be going on in IE6 to cause this rendering issue? UPDATE: Apparently, this is also an IE7 issue.

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• Reconnect Attempts for CIFS share

  - by Davin

  I have a CIFS share mounted in the FSTAB on Ubuntu server, which connects to our SAN and works without issue. Last night we had an issue with the SAN for about 12 hours. We corrected the problem and the Windows boxes restored their mappings. The Ubuntu box did not, but we were able to restore with [mount -a]. I saw options to specify retries in man for NFS but not CIFS. Any ideas on ensuring a reconnect if the SAN goes down again?

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• Really annoying bug with Topmost property in Windows Forms

  - by Nazgulled

  Hi, I have this Windows Forms application where it sits in the notification area. Clicking on the icon brings it up front, clicking it again (or clicking on the app X icon) sends it back. This is the type of app that having the window always on top is important when it's displayed by clicking the icon, but it's optional. Right-clicking the icon brings up a context menu where one can select to enable the "always on top" option or not. When the application first starts up, the app settings are read from an XML file and I'm 99% that this is working as it should, the Topmost properly is properly read (and written). After some time (minutes, hours, days, whatever, I normally hibernate and rarely shutdown) the Topmost stops working. I don't change the option, I don't think anything is changing the option but I click the notification area icon and app is not brought up front. It shows up (it displays on Alt+Tab) but it's on the background, it's not topmost as it should. I bring up the context menu, disable the option (cause it's enabled) and enable it back and it starts to work after that. The app is now topmost. However, it can lose this ability anytime after while. I can't understand why this happens and how this happens. Does anyone have any idea why? If not, any idea how could I try to debug such behavior?

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• Bug in Apple's 'GLPaint' sample - dot always drawn before line - problem in touchesBegan/Moved/Ended

  - by Adam

  I was just messing around with Apple's GLPaint sample app to learn more about OpenGL, and I noticed that whenever you draw a line, it's always preceded by a dot. Basically, it looks like: .________ Does anyone know why this happens? I'm guessing it's some weirdness with touchesBegan/Moved/Ended, but I can't verify. It's been driving me crazy all morning!

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• Bug: files uploaded via desktop or web client have hidden tag when listed via API

  - by Jon Webb

  Files uploaded to Google Drive sometimes incorrectly have a hidden tag when listed via the Document List v3 REST API: <category scheme='http://schemas.google.com/g/2005/labels' term='http://schemas.google.com/g/2005/labels#hidden' label='hidden'/> This happens if: a subfolder is created via the Google Drive desktop client and files are copied in, or a folder is uploaded via the Google Drive web client. The folder does not have the hidden tag, but the files that were uploaded do. The files do not have this tag if: they are individually uploaded via the Google Drive web client to the subfolder, or they are uploaded via the REST API to the subfolder, or they are uploaded via the desktop client to the My Drive root. The files and folders show up in Google Drive whether they have the hidden tag or not. We're using the API with the following scope: https://docs.google.com/feeds/ https://spreadsheets.google.com/feeds/ https://docs.googleusercontent.com/ I have verified and can recreate this with the OAuth 2.0 playground. Google Drive desktop client version 1.3.3209.2600 on Win7 32-bit I guess these must be bugs in the API...

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• CRViewer control bug on Vista SP1

  - by ivix

  I have created a COM component that uses CRViewer to load and display some reports. i consume this COM control on the windows application using C#. THe problem is before vista SP1 was installed the CRViewer is to load propery and show the report but after SP1 it does not , CRViewer.IsBusy is always set to true.

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• Why is this not a bug in qmail?

  - by jemfinch

  I was reading DJB's "Some thoughts on security after ten years of Qmail 1.0" and he listed this function for moving a file descriptor: int fd_move(to,from) int to; int from; { if (to == from) return 0; if (fd_copy(to,from) == -1) return -1; close(from); return 0; } It occurred to me that this code does not check the return value of close, so I read the man page for close(2), and it seems it can fail with EINTR, in which case the appropriate behavior would seem to be to call close again with the same argument. Since this code was written by someone with far more experience than I in both C and UNIX, and additionally has stood unchanged in qmail for over a decade, I assume there must be some nuance that I'm missing that makes this code correct. Can anyone explain that nuance to me?

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• Discs in DVD Drive not being read

  - by I Heart Ubuntu

  Does anyone have an experience with Ubuntu that is no longer reading discs in the DVD drive? This is my first time Ubuntu does not see the disc :| The disc is fine and works on my other Ubuntu computers. The drive is there and powered. I can even type in eject in a terminal and the drive will open. Using the command: sudo lshw -C disk I am able to see info about my drive too. Actually BOTH of my internal DVD drives cannot read discs anymore. If the output is not readable below, here is the info in pastebin. http://pastebin.com/GqqSCTPw *-cdrom:0 description: DVD writer product: DVD_RW ND-3500AG vendor: _NEC physical id: 0.0.0 bus info: scsi@0:0.0.0 logical name: /dev/cdrom1 logical name: /dev/cdrw1 logical name: /dev/dvd1 logical name: /dev/dvdrw1 logical name: /dev/scd0 logical name: /dev/sr0 version: 2.1B serial: [_NEC DVD_RW ND-3500AG2.1B06022300BT-LIGGY capabilities: removable audio cd-r cd-rw dvd dvd-r configuration: ansiversion=5 status=nodisc *-cdrom:1 description: DVD-RAM writer product: CDDVDW SH-S222A vendor: TSSTcorp physical id: 0.1.0 bus info: scsi@0:0.1.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/scd1 logical name: /dev/sr1 version: SB01 capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=nodisc

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• Reliable Backup Solution for Linux for Complete System Restoration

  - by Chris S

  What's the best backup solution for Linux that can completely restore the entire filesystem to a blank harddrive (including partitioning) after an old harddrive dies? I'm currently running a few Ubuntu machines, some with RAID-1 and others without RAID (mostly laptops). I'd like to implement a backup solution that can take incremental snapshots of the entire filesystem, so that if I were to replace all the harddrives in a machine, I could use the backup to restore a perfect copy of the previous filesystem. Unfortunately, nearly all the backup solutions I've found seem to be glorified rsync scripts, which only backup some files, and have no easy way to restore once the entire filesystem is gone. Some of the more complicated solutions, like Bacula, might do what I need, but require a complicated server/client setup and are notoriously difficult to maintain. I've heard that Apple's TimeMachine utility has this ability, and I've had similar success taking differential disk images with Acronis True Image on Windows, but of course neither of these work on Linux. Is there anything comparable for Ubuntu?

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• My Tablet PC has a jog dial (typically used for scrolling up and down) but it does not work by defau

  - by techtechmo

  I have an HP Compaq TC4400 and I recently was able to make most of the Tablet PC functions work in Ubuntu 9.10. (The step-by-step guide can be found in my blog.) Unfortunately I have yet to make the jog dial work. This would be particularly useful for scrolling up and down websites and documents when the TC4400 is in slate mode (with no access to the keyboard). I would be much obliged if anybody could tell me: How to find out the input button/key assignment that Ubuntu 9.10 has for jog-up and jog-down; How to assign jog-up to scroll up (D-pad key UP, or PAGE UP) and jog-down to scroll down (D-Pad key DOWN, or PAGE DOWN). I am using xbindkeys to assign different shortcuts to the quick launch buttons, perhaps I could use the same program for the jog dial? I would have done that, except I do not know how to find the proper button/key assignment for xbindkeys to use. Thanks in advance!

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