Search Results

Search found 42090 results on 1684 pages for 'mean square method'.

Page 302/1684 | < Previous Page | 298 299 300 301 302 303 304 305 306 307 308 309  | Next Page >

• Is it normal that conversationId keeps increasing after each page request?

  - by Casper

  Hi I'm building a Seam application and have a question: I got a stateless session bean (default seam scope) with a delete and a select method. A page which contains a datamodel loads and got links to select and delete each row (both links refer to the actionmethods in the bean). The delete method deletes the selected row from the list and returns null (reloads page). The select method loads a new page where the selected row can be edited. Each time a link in the datamodel is clicked and an action gets fired, the conversationId gets increased. Is this normal behaviour since im not even in a conversation? If it ain't normal behaviour, what's best practice to prevent this from happening?

  Read the article

• Implementing ToArgb()

  - by Number8

  Hello -- System.Drawing.Color has a ToArgb() method to return the Int representation of the color. In Silverlight, I think we have to use System.Windows.Media.Color. It has A, R, G, B members, but no method to return a single value. How can I implement ToArgb()? In System.Drawing.Color, ToArgb() consists of return (int) this.Value; System.Windows.Media.Color has a FromArgb(byte A, byte R, byte G, byte B) method. How do I decompose the Int returned by ToArgb() to use with FromArgb()? Thanks for any pointers...

  Read the article

• UnauthorizedAccessException cannot resolve Directory.GetFiles failure

  - by Ric Coles

  Hi all, Directory.GetFiles method fails on the first encounter with a folder it has no access rights to. The method throws an UnauthorizedAccessException (which can be caught) but by the time this is done, the method has already failed/terminated. The code I am using is listed below: try { // looks in stated directory and returns the path of all files found getFiles = Directory.GetFiles(@directoryToSearch, filetype, SearchOption.AllDirectories); } catch (UnauthorizedAccessException) { } As far as I am aware, there is no way to check beforehand whether a certain folder has access rights defined. In my example, I'm searching on a disk across a network and when I come across a root access only folder, my program fails. I have searched for a few days now for any sort of resolve, but this problem doesn't seem to be very prevalent on here or Google. I look forward to any suggestions you may have, Regards

  Read the article

• silverlight 3 listbox item highlight versus selected.

  - by cody

  I have a listbox and am attempting to select and item in code. Sometime one item is highlighted, that is it is background is colored blue, but a different item has a square blue box around the it (no highlighting just an hollow outline of a box). Am I correct in saying one is "highlighted" and one is "selected" and do I have them correctly identified? Should this be happening... that is these 2 things being out of sync? Thanks Cody

  Read the article

• How can I limit access to a particular class to one caller at a time in a web service?

  - by MusiGenesis

  I have a web service method in which I create a particular type of object, use it for a few seconds, and then dispose it. Because of problems arising from multiple threads creating and using instances of this class at the same time, I need to restrict the method so that only one caller at a time ever has one of these objects. To do this, I am creating a private static object: private static object _lock = new object(); ... and then inside the web service method I do this around the critical code: lock (_lock) { using (DangerousObject do = new DangerousObject()) { do.MakeABigMess(); do.CleanItUp(); } } I'm not sure this is working, though. Do I have this right? Will this code ensure that only one instance of DangerousObject is instantiated and in use at a time?

  Read the article

• How to add a timeout value when using Java's Runtime.exec()?

  - by James Adams

  I have a method I am using to execute a command on the local host. I'd like to add a timeout parameter to the method so that if the command being called doesn't finish in a reasonable amount of time the method will return with an error code. Here's what it looks like so far, without the ability to timeout: public static int executeCommandLine(final String commandLine, final boolean printOutput, final boolean printError) throws IOException, InterruptedException { Runtime runtime = Runtime.getRuntime(); Process process = runtime.exec(commandLine); if (printOutput) { BufferedReader outputReader = new BufferedReader(new InputStreamReader(process.getInputStream())); System.out.println("Output: " + outputReader.readLine()); } if (printError) { BufferedReader errorReader = new BufferedReader(new InputStreamReader(process.getErrorStream())); System.out.println("Error: " + errorReader.readLine()); } return process.waitFor(); } Can anyone suggest a good way for me to implement a timeout parameter? Thanks in advance for any suggestions! --James

  Read the article

• How do I close a database connection being used to produce a streaming result in a WCF service?

  - by Dan

  I have been unable to find any documentation on properly closing database connections in WCF service operations. I have a service that returns a streamed response through the following method. public virtual Message GetData() { string sqlString = BuildSqlString(); SqlConnection conn = Utils.GetConnection(); SqlCommand cmd = new SqlCommand(sqlString, conn); XmlReader xr = cmd.ExecuteXmlReader(); Message msg = Message.CreateMessage( OperationContext.Current.IncomingMessageVersion, GetResponseAction(), xr); return msg; } I cannot close the connection within the method or the streaming of the response message will be terminated. Since control returns to the WCF system after the completion of that method, I don't know how I can close that connection afterwards. Any suggestions or pointers to additional documentation would be appreciated.

  Read the article

• How to write the content of a dictionary to a text file?

  - by codemonkie

  I have a dictionary object of type Dictionary and trying to use StreamWriter to output the entire content to a text file but failed to find the correct method from the Dictionary class. using (StreamWriter sw = new StreamWriter("myfile.txt")) { sw.WriteLine(dictionary.First()); } I can only retrieve the first element and it is bounded by a square bracket plus a comma separator in between as well: [Peter, Admin] and would be nice to have [Peter Admin] (without the comma)

  Read the article

• Understanding the output of ldd

  - by nebukadnezzar

  I'm having a hard time understanding the output of ldd - Especially the processor identifiers. The string in question is this one: Shortest.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, from ']', not stripped I have several questions about it: What does "ELF" mean? I know that's what Linux binaries are called like (Windows Binaries are called PE Binaries, "Portable Executable" Binaries), but isn't ELF an abbreviation for something? What does LSB mean? I can't even guess it... I see the string "Intel" there, now I seriously wonder about the portability of Linux binaries, as ldd seems to expect every binary to be compiled on a intel processor... but what if it wasn't compiled on a Intel processor? Or when I attempt to run the binary on a computer that doesn't run ontop of a Intel processor? Why the ']'? My guess is it should be some sort of Linker identify, but ']' doesn't look much like a Identifier... Thanks in advance

  Read the article

• Python IDLE: How to type correct indentation?

  - by user2988464

  Mac: Maverick Python: 3.4 I tried to testtimeit module in Python's IDLE import timeit >>> timeit.timeit( "obj.method", """ class SomeClass: def method(self): pass obj = SomeClass() """) When I tried to type def method(self): on the next line of class SomeClass, I hit Tab, it prompted a window showing the files inside my Document directory. So I hit Ctrl+Tab instead. But I still got the error: Traceback (most recent call last): File "<pyshell#26>", line 6, in <module> """) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/timeit.py", line 213, in timeit return Timer(stmt, setup, timer).timeit(number) File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/timeit.py", line 122, in __init__ code = compile(src, dummy_src_name, "exec") File "<timeit-src>", line 9 _t0 = _timer() ^ IndentationError: unindent does not match any outer indentation level Can someone explain: how to fix it, and how to avoid the prompt of My Document appear? Thx!!!

  Read the article

• Should tests be self written in TDD?

  - by martin

  We run a project, which we want to solve with test driven development. I thought about some questions that came up, when initiating the project. One question was, who should write the unit-test for a feature. Should the unit-test be written by the feature-implementing programmer? Or should the unit test be written by another programmer, who defines what a method should do and the feature-implementing programmer implements the method until the tests runs? If i understand the concept of TDD in the right way. The feature-implementing programmer has to write the test by himself, because TDD is procedure with mini-iterations. So it would be too complex to have the tests written by another programmer? What would you say, should the tests in TDD written by the programmer himself or should another programmer write the tests that describes what a method can do?

  Read the article

• Meaning of "Tertiary level" In New Zealand programmer job listings

  - by Thomas L Holaday

  What does the phrase "Be qualified at the Tertiary level" mean in the context of a New Zealand listing for programming jobs?

  Read the article

• JetBrains dotTrace, is it possible to profile source code line by line? else I need another tool

  - by m3ntat

  I am using JetBrains dotTrace, I've profiled my app which is entirely CPU bound. But the results as you walk down the tree don't sum to the level above in the tree, I only see method calls not the body lines of the node in questions method. Is it possible to profile the source code line by line. i.e for one node: SimulatePair() 99.04% --nextUniform() 30.12% --IDCF() 24.08% So the method calls nextUniform + IDCF use 54% of the time in SimulatePair (or 54% total execution time I'm not sure how to read this) regardless what is happening the other 46% of SimulatePair I need some detail on a line by line basis. Any help or alternative tools is much appreciated. Thanks

  Read the article

• Disposing of Objects with long living dependencies

  - by Ray Booysen

  public class ABC { public ABC(IEventableInstance dependency) { dependency.ANewEvent += MyEventHandler; } private void MyEventHandler(object sender, EventArgs e) { //Do Stuff } } Let us say that an instance of ABC is a long living object and that my dependency is an even longer running object. When an instance of ABC needs to be cleaned up, I have two options. One I could have a Cleanup() method to unsubscribe from the ANewEvent event or I could implement IDisposable and in the Dispose unwire the event. Now I have no control over whether the consumer will call the dispose method or even the Cleanup method should I go that route. Should I implement a Finaliser and unsubscribe then? It feels dirty but I do not want hanging instances of ABC around. Thoughts?

  Read the article

• Simple cropping with Paperclip

  - by collimarco

  I would like to crop images on upload using Paperclip to get square thumbs from the center of the original picture. I find out a method in documentation that seems to do exactly what I want: transformation_to(dst, crop = false) The problem is that I can't figure out where to use this method. It would be great to simply pass something as a parameter here: has_attached_file :picture, :styles = { :medium = "600x600", :thumb = "something here" }

  Read the article

• Question about spring transaction propagation

  - by Yousui

  Hi guys, I have a question about spring transaction propagation. If I use @Transactional(propagation = Propagation.REQUIRED) to annotate a method m1. When execution logic enter m1, if there is already a transaction, m1 will use that one. When after m1, what about the transaction? It ends or still open?(if I call m1 in another method, and after the invocation there is still other things to do). In summary, I want to know when exiting an annotated method, the transaction ends or still open? Great thanks.

  Read the article

• close fails on database connections (managed connection cleanup fails) in websphere 7 but not in web

  - by mete

  I have a simple method (used in a web application through servlets) that gets a connection from a JNDI name and issues a select statement (get connection, issue select, return result, close the connection etc. in finally). Due to other methods in the application the connection is set as autocommit=false. This method works normally in websphere 6.1 as well as in glassfish and weblogic. However, in websphere 7, it receives cleanup failed error when I close the connection because, it says, the connection is still in a transaction. Because I was not updating anything I did not commit or rollback the connection in this method (which can be wrong). If I add commit before closing the connection, it works. My question is why it works in websphere 6.1 (and other containers) and why not in websphere 7 ? What can be the cause of this difference ?

  Read the article

• Why Foo Is the Example?

  - by Mustafa

  Why object related examples are given by Foo a = new Foo(); and what does Foobar mean?

  Read the article

• Cancel Leave Event when closing

  - by DiegoMaK

  I have got a textbox on a form with a method being called from the txPredio_Leave event. My problem is that is the user has focus on the textbox and then close the form by clicking the little X close icon in the top corner or by calling this.ActiveMdiChild.Close(); or by calling private void mnucerrarTodas_Click(object sender, EventArgs e) { foreach (Form form in this.MdiChildren) { form.Close(); } } The txPredio leave execute the method.. then i need doesn't excute this method when the form is closing. i have think that one solution could be ask in leave event if form is closing private void txPredio_Leave(object sender, EventArgs e) { if(!form is closing)//pseudo code Check_Load_Predio(); } or other solution could be private void MainForm_FormClosing(object sender, FormClosingEventArgs e) { //code for cancel the txPredio_Leave event } Solution Here Doesn´t work for me. Then I need one solution for my problem. Thanks in advance

  Read the article

• Simple Custom rule for Jquery validator

  - by thatweblook

  Hi, I read your reply regarding the jQuery validator where you outline a method to check a username against a value in a database. Ive tried implementing this method but no matter what is returned from the PHP file I always get the message that the username is already taken. Here is ths custom method... $.validator.addMethod("uniqueUserName", function(value, element) { $.ajax({ type: "POST", url: "php/get_save_status.php", data: "checkUsername="+value, dataType:"html", success: function(msg) { // if the user exists, it returns a string "true" if(msg == "true") return false; // already exists return true; // username is free to use } })}, "Username is Already Taken"); And here is the validate code... username: { required: true, uniqueUserName: true }, Is there a specific way i am supposed to return the message from php. Thanks A

  Read the article

• resolve maya crash

  - by knishua

  Hi, I have a file which is crashing while rendering. File contains 50+ reference nodes. polycount : (lks)2,59,49,150; textures : (ths)2,628. It is being rendered in mental ray. All textures are .map. The attached image has the machine cofiguration with page file. here is the log file when the file crashes. what is the line in the log file mean. How to solve this. Exception code: C0000006: IN_PAGE_ERROR Fault address: 7814E420 in C:\WINDOWS\WinSxS\amd64_Microsoft.VC80.CRT_1fc8b3b 9a1e18e3b_8.0.50727.762_x-ww_9D1C6CE0\MSVCR80.dll what does the above mean. how to resolve this. Brgds, kNish

  Read the article

• What's the difference between IEquatable and just overriding Object.Equals() ?

  - by devoured elysium

  I want my Food class to be able to test whenever it is equal to another class. I will later use it against a List, and I want to use its List.Contains() method. Should I implement IEquatable or just override Object.Equals()? From MSDN: This method determines equality by using the default equality comparer, as defined by the object's implementation of the IEquatable.Equals method for T (the type of values in the list). So my next question is: which functions/classes of the .NET framework make use of Object.Equals()? Should I use it in the first place? Thanks

  Read the article

• Exception thrown while working with JTabbedPane

  - by Halo

  I'm using a JTabbedPane in my application and I listen to its changes with ChangeListener so that I can know which tab is currently selected. So my stateChanged method is; public void stateChanged(ChangeEvent e) { currentPageIndex = jTabbedPane.getSelectedIndex(); } But while I'm adding new tabs to the JTabbedPane it throws an ArrayIndexOutOfBoundsException in the method above, I don't know why. Some suggested for a similar case that this is a bug http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4873983, but as you'll see some says the solution is to work with Swing from EventDispatchThread. What does it mean, do they mean the SwingUtilities.invokeLater thing? Can someone show me how I can modify my stateChanged method accordingly to avoid the exception?

  Read the article

• Why is the form action attribute empty on production server?

  - by Ozzy

  After deploying a ASP.NET WebForms application to a production server some of the ajax calls has stopped working for me. After some debugging I found out that the following statement (in the internal client-method WebForm_DoCallback) was causing the problem: xmlRequest.open("POST", action, true); The problem seemed to be that the action-variable was empty so after checking the rendered html I found out that the form-tag rendered on the production server looks like: <form method="post" action="" id="Form1"> However, on my developer machine I get the following: <form method="post" action="default.aspx" id="Form1"> So, why would the action-attibute render on my dev.machine but not on the production server? This seems to be the case only for one specific web form, when I look on other pages the action-attribute renders correctly. Any suggestions or ideas would be helpful!

  Read the article

• Free Excel spreadsheet Component for SilverLight?

  - by Rev

  I Need a Good Excel spreadsheet Component for Silver Light. I mean Free ones!!!

  Read the article

< Previous Page | 298 299 300 301 302 303 304 305 306 307 308 309  | Next Page >