Search Results

Search found 13011 results on 521 pages for 'catch block'.

Page 396/521 | < Previous Page | 392 393 394 395 396 397 398 399 400 401 402 403  | Next Page >

• Creating an HTTP-Redirected Virtual Directopry in IIS 6.0 without specifying physical path & WMI/ADS

  - by Steve Johnson

  My question is : Is it possible to create a working IIS 6.0 Virtual Directory with providing Physical Path of the Virtual Directory.? I know that manually, it is not possible via IIS but programmatically such a virtual directory can be created. If an HTTPRedirect is set on that virtual directory but the site physical path is not specified, then will it work? Simply stated, how to create an HTTp-redirected Virtual Directory , directly without specifying any physical path to a folder or network share. Here is my code. Try If Directory.Exists(HomeDirectory) = False And Path.StartsWith("http://") = False Then Directory.CreateDirectory(HomeDirectory) End If Dim website As DirectoryEntry website = New DirectoryEntry("IIS://" & IISServer & "/W3SVC/" & WebsiteId & "/Root") Dim NewVDir As DirectoryEntry = website.Children.Add(VDirName, "IIsWebVirtualDir") If Path.StartsWith("http://") = False Then NewVDir.Properties("Path")(0) = Path NewVDir.Properties("HttpRedirect").Clear() Else NewVDir.Properties("HttpRedirect")(0) = Path End If If ((Perm And Permission.Read) = Permission.Read) Then NewVDir.Properties("AccessRead")(0) = True End If If ((Perm And Permission.Write) = Permission.Write) Then NewVDir.Properties("AccessWrite")(0) = True End If If ((Perm And Permission.DirBrowse) = Permission.DirBrowse) Then NewVDir.Properties("EnableDirBrowsing")(0) = True End If If ((Perm And Permission.CreatetApplication) = Permission.CreatetApplication) Then NewVDir.Invoke("AppCreate", True) End If If ((Perm And Permission.ScriptOnly) = Permission.ScriptOnly) Then NewVDir.Properties("AccessScript")(0) = True End If If ((Perm And Permission.ScriptNExecute) = Permission.ScriptNExecute) Then NewVDir.Properties("AccessExecute")(0) = True End If NewVDir.Properties("AuthAnonymous")(0) = True NewVDir.Properties("AuthNTLM")(0) = True NewVDir.Properties("AnonymousUserName")(0) = AnonUserName NewVDir.Properties("AnonymousUserPass")(0) = AnonPassword NewVDir.Properties("AppFriendlyName")(0) = AppFriendlyName NewVDir.CommitChanges() website.CommitChanges() NewVDir.Close() website.Close() Success = True Catch Err As Exception Throw New Exception("My Custom Exception Here: " & Err.Message) End Try

  Read the article

• hibernate c3p0 broken pipe

  - by raven_arkadon

  Hi, I'm using hibernate 3 with c3p0 for a program which constantly extracts data from some source and writes it to a database. Now the problem is, that the database might become unavailable for some reasons (in the simplest case: i simply shut it down). If anything is about to be written to the database there should not be any exception - the query should wait for all eternity until the database becomes available again. If I'm not mistaken this is one of the things the connection pool could do for me: if there is a problem with the db, just retry to connect - in the worst case for infinity. But instead i get a broken pipe exception, sometimes followed by connection refused and then the exception is passed to my own code, which shouldn't happen. Even if I catch the exception, how could i cleanly reinitialize hibernate again? (So far without c3p0 i simply built the session factory again, but i wouldn't be surprised if that could leak connections (or is it ok to do so?)). The database is Virtuoso open source edition. My hibernate.xml.cfg c3p0 config: <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property> <property name="hibernate.c3p0.breakAfterAcquireFailure">false</property> <property name="hibernate.c3p0.acquireRetryAttempts">-1</property> <property name="hibernate.c3p0.acquireRetryDelay">30000</property> <property name="hibernate.c3p0.automaticTestTable">my_test_table</property> <property name="hibernate.c3p0.initialPoolSize">3</property> <property name="hibernate.c3p0.minPoolSize">3</property> <property name="hibernate.c3p0.maxPoolSize">10</property> btw: The test table is created and i get tons of debug output- so it seems it actually reads the config.

  Read the article

• g++ linker can't find const member function

  - by Max

  I have a Point class (with integer members x and y) that has a member function withinBounds that is declared like so: bool withinBounds(const Point&, const Point&) const; and defined like this: bool Point::withinBounds(const Point& TL, const Point& BR) const { if(x < TL.getX()) return false; if(x > BR.getX()) return false; if(y < TL.getY()) return false; if(y > BR.getY()) return false; // Success return true; } and then in another file, I call withinBounds like this: Point pos = currentPlayer->getPosition(); if(pos.withinBounds(topleft, bottomright)) { // code block } This compiles fine, but it fails to link. g++ gives me this error: /home/max/Desktop/Development/YARL/yarl/src/GameData.cpp:61: undefined reference to 'yarl::utility::Point::withinBounds(yarl::utility::Point const&, yarl::utility::Point const&)' When I make the function not const, it links fine. Anyone know the reason why? The linker error looks like it's looking for a non-const version of the function, but I don't know why it would.

  Read the article

• ClassCleanup in MSTest is static, but the build server uses nunit to run the unit tests. How can i a

  - by Kettenbach

  Hi All, MSTest has a [ClassCleanup()] attribute, which needs to be static as far as I can tell. I like to run through after my unit tests have run,and clean up my database. This all works great, however when I go to our build server and use our Nant build script, it seems like the unit tests are run with NUnit. NUnit doesn't seem to like the cleanup method to be static. It therefore ignores my tests in that class. What can I do to remedy this? I prefer to not use [TestCleanUp()] as that is run after each test. Does anyone have any suggestions? I know [TestCleanup()] aids in decoupling, but I really prefer the [ClassCleanup()] in this situation. Here is some example code. ////Use ClassCleanup to run code after all tests have run [ClassCleanup()] public static void MyFacadeTestCleanup() { UpdateCleanup(); } private static void UpdateCleanup() { DbCommand dbCommand; Database db; try { db = DatabaseFactory.CreateDatabase(TestConstants.DB_NAME); int rowsAffected; dbCommand = db.GetSqlStringCommand("DELETE FROM tblA WHERE biID=@biID"); db.AddInParameter(dbCommand, "biID", DbType.Int64, biToDelete); rowsAffected = db.ExecuteNonQuery(dbCommand); Debug.WriteLineIf(rowsAffected == TestConstants.ONE_ROW, string.Format("biId '{0}' was successfully deleted.", biToDelete)); } catch (SqlException ex) { } finally { dbCommand = null; db = null; biDelete = 0; } } Thanks for any pointers and yes i realize I'm not catching anything. I need to get passed this hurdle first. Cheers, ~ck in San Diego

  Read the article

• Synchronizing Access to a member of the ASP.NET session

  - by Sam

  I'm building a Javascript application and eash user has an individual UserSession. The application makes a bunch of Ajax calls. Each Ajax call needs access to a single UserSession object for the user. Each Ajax call needs a UserSession object. Data in the UserSession object is unique to each user. Originally, during each Ajax call I would create a new UserSession object and it's data members were stored in the ASP.NET Session. However, I found that the UserSession object was being instantiated a lot. To minimize the construction of the UserSession object, I wrapped it in a Singleton pattern and sychronized access to it. I believe that the synchronization is happening application wide, however I only need it to happen per user. I saw a post here that says the ASP.NET cache is synchronized, however the time between creating the object and inserting it into the cache another Thread could start construction it's another object and insert it into the cache. Here is the way I'm currently synchronizing access to the object. Is there a better way than using "lock"... should be be locking on the HttpContext.Session object? private static object SessionLock = new object(); public static WebSession GetSession { get { lock (SessionLock) { try { var context = HttpContext.Current; WebSession result = null; if (context.Session["MySession"] == null) { result = new WebSession(context); context.Session["MySession"] = result; } else { result = (WebSession)context.Session["MySession"]; } return result; } catch (Exception ex) { ex.Handle(); return null; } } } }

  Read the article

• BitShifting with BigIntegers in Java

  - by ThePinkPoo

  I am implementing DES Encryption in Java with use of BigIntegers. I am left shifting binary keys with Java BigIntegers by doing the BigInteger.leftShift(int n) method. Key of N (Kn) is dependent on the result of the shift of Kn-1. The problem I am getting is that I am printing out the results after each key is generated and the shifting is not the expected out put. The key is split in 2 Cn and Dn (left and right respectively). I am specifically attempting this: "To do a left shift, move each bit one place to the left, except for the first bit, which is cycled to the end of the block. " It seems to tack on O's on the end depending on the shift. Not sure how to go about correcting this. Results: c0: 11110101010100110011000011110 d0: 11110001111001100110101010100 c1: 111101010101001100110000111100 d1: 111100011110011001101010101000 c2: 11110101010100110011000011110000 d2: 11110001111001100110101010100000 c3: 1111010101010011001100001111000000 d3: 1111000111100110011010101010000000 c4: 111101010101001100110000111100000000 d4: 111100011110011001101010101000000000 c5: 11110101010100110011000011110000000000 d5: 11110001111001100110101010100000000000 c6: 1111010101010011001100001111000000000000 d6: 1111000111100110011010101010000000000000 c7: 111101010101001100110000111100000000000000 d7: 111100011110011001101010101000000000000000 c8: 1111010101010011001100001111000000000000000 d8: 1111000111100110011010101010000000000000000 c9: 111101010101001100110000111100000000000000000 d9: 111100011110011001101010101000000000000000000 c10: 11110101010100110011000011110000000000000000000 d10: 11110001111001100110101010100000000000000000000 c11: 1111010101010011001100001111000000000000000000000 d11: 1111000111100110011010101010000000000000000000000 c12: 111101010101001100110000111100000000000000000000000 d12: 111100011110011001101010101000000000000000000000000 c13: 11110101010100110011000011110000000000000000000000000 d13: 11110001111001100110101010100000000000000000000000000 c14: 1111010101010011001100001111000000000000000000000000000 d14: 1111000111100110011010101010000000000000000000000000000 c15: 11110101010100110011000011110000000000000000000000000000 d15: 11110001111001100110101010100000000000000000000000000000

  Read the article

• PHP Database connection practice

  - by Phill Pafford

  I have a script that connects to multiple databases (Oracle, MySQL and MSSQL), each database connection might not be used each time the script runs but all could be used in a single script execution. My question is, "Is it better to connect to all the databases once in the beginning of the script even though all the connections might not be used. Or is it better to connect to them as needed, the only catch is that I would need to have the connection call in a loop (so the database connection would be new for X amount of times in the loop). Yeah Example Code #1: // Connections at the beginning of the script $dbh_oracle = connect2db(); $dbh_mysql = connect2db(); $dbh_mssql = connect2db(); for ($i=1; $i<=5; $i++) { // NOTE: might not use all the connections $rs = queryDb($query,$dbh_*); // $dbh can be any of the 3 connections } Yeah Example Code #2: // Connections in the loop for ($i=1; $i<=5; $i++) { // NOTE: Would use all the connections but connecting multiple times $dbh_oracle = connect2db(); $dbh_mysql = connect2db(); $dbh_mssql = connect2db(); $rs_oracle = queryDb($query,$dbh_oracle); $rs_mysql = queryDb($query,$dbh_mysql); $rs_mssql = queryDb($query,$dbh_mssql); } now I know you could use a persistent connection but would that be one connection open for each database in the loop as well? Like mysql_pconnect(), mssql_pconnect() and adodb for Oracle persistent connection method. I know that persistent connection can also be resource hogs and as I'm looking for best performance/practice.

  Read the article

• Downloading attachments to directory with IMAP in PHP, randomly works

  - by Nick

  I found PHP code online to download attachments to a directory using IMAP from here. http://www.nerdydork.com/download-pop3imap-email-attachments-with-php.html I modified it slightly changing $structure = imap_fetchstructure($mbox, $jk); $parts = ($structure->parts); to $structure = imap_fetchstructure($mbox, $jk); $parts = ($structure); to get it to run properly, as otherwise I got an error about how stdClass doesn't define a property called $parts. Doing that, I was able to download all the attachments. I tested it again recently though, and it didn't work. Well, it didn't work 6 times, worked the 7th, and then hasn't worked since. I'm thinking it has something to do with me screwing up the parts handling, since count($parts) keeps returning 1 for each message, so it's not finding any attachments I think. Since it downloaded the attachments at one point with no issues, I feel confident that the area things are getting screwed up is right here. Before this block of code is a for loop that goes through each message in the box, and after it is loop that just goes through $parts for each imap structure. Thanks for any help you can provide. I looked at the imap_fetchstructure page on php.net and can't figure out what I'm doing wrong. Edit: I just double-checked the folder after typing up my question and it all popped up. I feel like I'm going nuts. I hadn't run the code since a few minutes before I started typing this, and it doesn't make sense to me that it would take this long to trigger. I have some 800 messages in the mailbox, but I figured since it printed my statement at the very end of the PHP that all of the file creation work was done.

  Read the article

• How to search cvs comment history

  - by Chris Noe

  I am aware of this command: cvs log -N -w<userid> -d"1 day ago" Unfortunately this generates a formatted report with lots of newlines in it, such that the file-path, the file-version, and the comment-text are all on separate lines. Therefore it is difficult to scan it for all occurrences of comment text, (eg, grep), and correlate the matches to file/version. (Note that the log output would be perfectly acceptable, if only cvs could perform the filtering natively.) EDIT: Sample output. A block of text like this is reported for each repository file: RCS file: /data/cvs/dps/build.xml,v Working file: build.xml head: 1.49 branch: locks: strict access list: keyword substitution: kv total revisions: 57; selected revisions: 1 description: ---------------------------- revision 1.48 date: 2008/07/09 17:17:32; author: noec; state: Exp; lines: +2 -2 Fixed src.jar references ---------------------------- revision 1.47 date: 2008/07/03 13:13:14; author: noec; state: Exp; lines: +1 -1 Fixed common-src.jar reference. =============================================================================

  Read the article

• to connect matlab with java

  - by user304005

  Through the below given code I was able to connect to matlab. But I was not able to execute the script file containing matlab code...Please help me to modify the code so as to execute the matlab code.... Here luck2 is a .m file.... import java.io.InputStreamReader; import java.io.*; public class matlab { private static File myMATLABScript; public static String runScript(File luck2) { String output = "" ; String error = ""; try { String commandToRun ="C:\\Program Files\\MATLAB\\R2009a\\bin\\matlab -nodisplay <" + "Z:\\sem\\java\\luck2"; //String commandToRun = "matlab -nosplash -r myMATLABScript -nodisplay -nodesktop < " + opentxt; System.out.println(commandToRun); Process p = Runtime.getRuntime().exec(commandToRun); String s; BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream())); BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream())); System.out.println("\nHere is the standard output of the command:\n"); while ((s = stdInput.readLine()) != null) { System.out.println("haiiiiiiiiiiii"); output = s + "\n"; System.out.println(s); } while ((s = stdError.readLine()) != null) { error = s + "\n"; System.out.println(s); } } catch (Exception e) { System.out.println("exception happened here what I know:"); e.printStackTrace(); System.exit(-1); } return output + error; } public static void main(String[] args) throws IOException { matlab m = new matlab(); matlab.runScript(myMATLABScript); //matlab.runScript(); } }

  Read the article

• how to pause and stop a changing ImageView

  - by user270811

  hi, i have an ImageView in which the picture switches every 5s, i am trying to add a pause and resume button that can stop and restart the action. i am using a Handler, Runnable, and postDelay() for image switch, and i put the code on onResume. i am thinking about using wait and notify for the pause and resume, but that would mean creating an extra thread. so far for the thread, i have this: class RecipeDisplayThread extends Thread { boolean pleaseWait = false; // This method is called when the thread runs public void run() { while (true) { // Do work // Check if should wait synchronized (this) { while (pleaseWait) { try { wait(); } catch (Exception e) { } } } // Do work } } } and in the main activity's onCreate(): Button pauseButton = (Button) findViewById(R.id.pause); pauseButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { while (true) { synchronized (thread) { thread.pleaseWait = true; } } } }); Button resumeButton = (Button) findViewById(R.id.resume); resumeButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { while (true) { // Resume the thread synchronized (thread) { thread.pleaseWait = false; thread.notify(); } } } }); the pause button seems to work, but then after that i can't press any other button, such as the resume button. thanks.

  Read the article

• How to use VC++ intrinsic functions w/o run-time library

  - by Adrian McCarthy

  I'm involved in one of those challenges where you try to produce the smallest possible binary, so I'm building my program without the C or C++ run-time libraries (RTL). I don't link to the DLL version or the static version. I don't even #include the header files. I have this working fine. For some code constructs, the compiler generates calls to memset(). For example: struct MyStruct { int foo; int bar; }; MyStruct blah = {}; // calls memset() Since I don't include the RTL, this results in a missing symbol at link time. I've been getting around this by avoiding those constructs. For the given example, I'll explicitly initialize the struct. MyStruct blah; blah.foo = 0; blah.bar = 0; But memset() can be useful, so I tried adding my own implementation. It works fine in Debug builds, even for those places where the compiler generates an implicit call to memset(). But in Release builds, I get an error saying that I cannot define an intrinsic function. You see, in Release builds, intrinsic functions are enabled, and memset() is an intrinsic. I would love to use the intrinsic for memset() in my release builds, since it's probably inlined and smaller and faster than my implementation. But I seem to be a in catch-22. If I don't define memset(), the linker complains that it's undefined. If I do define it, the compiler complains that I cannot define an intrinsic function. I've tried adding #pragma intrinsic(memset) with and without declarations of memset, but no luck. Does anyone know the right combination of definition, declaration, #pragma, and compiler and linker flags to get an intrinsic function without pulling in RTL overhead? Visual Studio 2008, x86, Windows XP+.

  Read the article

• c# calling process "cannot find the file specified"

  - by laura

  I'm a c# newbie so bear with me. I'm trying to call "pslist" from PsTools from a c# app, but I keep getting "The system cannot find the file specified". I thought I read somewhere on google that the exe should be in c:\windows\system32, so I tried that, still nothing. Even trying the full path to c:\windows\system32\PsList.exe is not working. I can open other things like notepad or regedit. Any ideas? C:\WINDOWS\system32dir C:\WINDOWS\SYSTEM32\PsList.exe Volume in drive C has no label. Volume Serial Number is ECC0-70AA Directory of C:\WINDOWS\SYSTEM32 04/27/2010 11:04 AM 231,288 PsList.exe 1 File(s) 231,288 bytes 0 Dir(s) 8,425,492,480 bytes free try { // Start the child process. Process p = new Process(); // Redirect the output stream of the child process. p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardOutput = true; //This works //p.StartInfo.FileName = @"C:\WINDOWS\regedit.EXE"; //This doesn't p.StartInfo.FileName = @"C:\WINDOWS\system32\PsList.exe"; p.Start(); // Do not wait for the child process to exit before // reading to the end of its redirected stream. p.WaitForExit(); // Read the output stream first and then wait. s1 = p.StandardOutput.ReadToEnd(); p.WaitForExit(); } catch (Exception ex) { Console.WriteLine("Exception Occurred :{0},{1}", ex.Message, ex.StackTrace.ToString()); Console.ReadLine(); }

  Read the article

• CarrierWave and nested forms saving empty image object if photo :title is included in form

  - by Wasabi Developer

  I'm after some advice in regards to handling nested form data and I would be ever so grateful for any insights. The trouble is I'm not 100% sure why I require the following code in my model accepts_nested_attributes_for :holiday_image, allow_destroy: true, :reject_if => lambda { |a| a[:title].blank? } If I don't understand why I require to tact on on my accepts_nested_attributes_for association: :reject_if => lambda { |a| a[:title].blank? } If I remove this :reject_if lambda, it will save a blank holiday photo object in the database. I presume because it takes the :title field from the form as an empty string? I guess my question is, am I doing this right or is there a better way of this this within nested forms if I want to extend my HolidayImage model to include more strings like description, notes? Sorry If I can't be more succinct. My simple holiday app. # holiday.rb class Holiday < ActiveRecord::Base has_many :holiday_image accepts_nested_attributes_for :holiday_image, allow_destroy: true, :reject_if => lambda { |a| a[:title].blank? } attr_accessible :name, :content, :holiday_image_attributes end I'm using CarrierWave for image uploads. # holiday_image.rb class HolidayImage < ActiveRecord::Base belongs_to :holiday attr_accessible :holiday_id, :image, :title mount_uploader :image, ImageUploader end Inside my _form partial there is a field_for block <h3>Photo gallery</h3> <%= f.fields_for :holiday_image do |holiday_image| %> <% if holiday_image.object.new_record? %> <%= holiday_image.label :title, "Image Title" %> <%= holiday_image.text_field :title %> <%= holiday_image.file_field :image %> <% else %> Title: <%= holiday_image.object.title %> <%= image_tag(holiday_image.object.image.url(:thumb)) %> Tick to delete: <%= holiday_image.check_box :_destroy %> <% end %> Thanks again for your patience.

  Read the article

• Doubts about .NET Garbage Collector

  - by Smjert

  I've read some docs about the .NET Garbage Collector but i still have some doubts (examples in C#): 1)Does GC.Collect() call a partial or a full collection? 2)Does a partial collection block the execution of the "victim" application? If yes.. then i suppose this is a very "light" things to do since i'm running a game server that uses 2-3GB of memory and i "never" have execution stops (or i can't see them..). 3)I've read about GC roots but still can't understand how exactly they works. Suppose that this is the code (C#): MyClass1: [...] public List<MyClass2> classList = new List<MyClass2>(); [...] Main: main() { MyClass1 a = new MyClass1(); MyClass2 b = new MyClass2(); a.classList.Add(b); b = null; DoSomeLongWork(); } Will b ever be eligible to be garbage collected(before the DoSomeLongWork finishes)? The reference to b that classList contains, can it be considered a root? Or a root is only the first reference to the instance? (i mean, b is the root reference because the instantiation happens there).

  Read the article

• Programming Concepts: What should be done when an exception is thrown?

  - by Dooms101

  This does not really apply to any language specifically, but if it matters I am using VB.NET in Visual Studio 2008. I can't seem to find anything really that useful using Google about this topic, but I was wondering what is common practice when an exception is thrown and caught but since it has been thrown the application cannot continue operating. For example I have exceptions that are thrown by my FileLoader class when a file cannot be found or when a file is deemed corrupt. The exception is only thrown within the class and is not handled really. If the error is detected, then the exception is thrown and whatever function is was thrown is basically quits. So in the code trying to create that object or call one of its members I use a Try...Catch statement. However, I was wondering, what should even do when this exception is caught? My application needs these files to be intact, and if they are not, the application is almost useless. So far I just pop up a message box telling the user their is an error and to reinstall. What else can I do, or better, what's common practice in these situations?

  Read the article

• Stretch Background Image & Resize With Browser Window

  - by user241673

  I am trying to replicate the image resizing found at http://devkick.com/lab/fsgallery/ but with the code I have below, it is not working properly. When resizing the browser window to have small width and big height, white space shows up at the bottom of the page. feel free to see it & edit at http://jsbin.com/ifolu3 The CSS: html, body {width:100%; height:100%; overflow:hidden;} div.bg {position:absolute; width:200%; height:200%; top:-50%; left:-50%;} img.bg {min-height:50%; min-width:50%; margin:0 auto; display:block;} The JS/jQuery: $(window).resize(function(){ var ratio = Math.max($(window).width()/$('img.bg').width(),$(window).height()/$('img.bg').height()); if ($(window).width() $(window).height()) { $('img.bg').css({width:image.width()*ratio,height:'auto'}); } else { $('img.bg').css({width:'auto',height:image.height()*ratio}); } }); The HTML - (sorry for the formatting, had trouble getting "<" to show) [body] [div class="bg"] [img class="bg" src="bg.jpg" /] [/div] [/body]

  Read the article

• Using unset member variables within a class or struct

  - by Doug Kavendek

  It's pretty nice to catch some really obvious errors when using unset local variables or when accessing a class or struct's members directly prior to initializing them. In visual studio 2008 you get an "uninitialized local variable used" warning at compile-time and get a run-time check failure at the point of access when debugging. However, if you access an uninitialized struct's member variable through one of its functions, you don't get any warnings or assertions. Obviously the easiest solution is don't do that, but nobody's perfect. For example: struct Test { float GetMember() const { return member; } float member; }; Test test; float f1 = test.member; // Raises warning, asserts in VS debugger at runtime float f2 = test.GetMember(); // No problem, just keeps on going This surprised me, but it makes some sense -- the compiler can't assume calling a function on an unused struct is an error, or how else would you initialize or construct it? And anything fancier just quickly brings up so many other complications that it makes sense that it wouldn't bother classifying which functions are ok to call and when, especially just as a debugging help. I know I can set up my own assertions or error checking within the class itself, but that can complicate some simpler structs. Still, it would seem like within the context of the function call, wouldn't it know insides GetMember() that member wasn't initialized yet? I'm assuming it's not only relying on static compile-time deduction, given the Run-Time Check Failure #3 it raises during execution, so based on my current understanding of it it would seem reasonable for the same checks to apply. Is this just a limitation of this specific compiler/debugger (Visual Studio 2008), or more tied to how C++ works?

  Read the article

• populatin jComBobox with data from a db tbl(table) column

  - by mnmyles

  Hi guyz? I have a JComboBox which i have named "venue_JCB" i want to load details from a tbl column on form load at the initcomponets() i have declared the method "accessDBinit() ;" and after the initComponets() i have implemented the accessDBinit(); method as follows: ================================code============================ void accessDBinit() //Get Student List in the List Box { try { sql = "SELECT classLevel FROM class_session ORDER BY classLevel"; java.lang.Class.forName("com.mysql.jdbc.Driver"); Connection con2=DriverManager.getConnection("jdbc:mysql:///coast","root",""); Statement stmt2 = (Statement)con2.createStatement(); boolean hasResults = stmt2.execute(sql); if(hasResults) { ResultSet rs2 = stmt2.getResultSet(); if(rs2!=null) { displayResultsinit(rs2); } db.stmt.close(); } } catch(Exception e) { System.out.println(e+"Error in connection"); } } void displayResultsinit(ResultSet r) throws SQLException { ResultSetMetaData rmeta = r.getMetaData(); int numColumns=rmeta.getColumnCount(); while(r.next()) { for(int i=1;i<=numColumns;++i) { if(i<=numColumns) { venue_JCB.addItem(r.getString(i)); } } } } ====================================end of code=================================== the method works (Populate the combobox) but at the output bar i get the following on form load and also whenever i select a component from the combobox ======= error===== java.lang.NullPointerExceptionError in connection could some one please tell me where i am going wrong with the method? Thanks in advance regards Malachi

  Read the article

• Use of Syntactic Sugar / Built in Functionality

  - by Kyle Rozendo

  I was busy looking deeper into things like multi-threading and deadlocking etc. The book is aimed at both pseudo-code and C code and I was busy looking at implementations for things such as Mutex locks and Monitors. This brought to mind the following; in C# and in fact .NET we have a lot of syntactic sugar for doing things. For instance (.NET 3.5): lock(obj) { body } Is identical to: var temp = obj; Monitor.Enter(temp); try { body } finally { Monitor.Exit(temp); } There are other examples of course, such as the using() {} construct etc. My question is when is it more applicable to "go it alone" and literally code things oneself than to use the "syntactic sugar" in the language? Should one ever use their own ways rather than those of people who are more experienced in the language you're coding in? I recall having to not use a Process object in a using block to help with some multi-threaded issues and infinite looping before. I still feel dirty for not having the using construct in there. Thanks, Kyle

  Read the article

• how to make Regular expression into non-greedy ?

  - by Rueta

  Hi everyone! I have made a Work with JQ. My Work is a string width a special character block begin and end of string. I want take the text in that special characters, i used regular expression for find in string, but how to make JQ find multi result when have two special character or more. My html here; <div id="container"> <div id="textcontainer"> Cu?c chi?n pháp lý gi?a [|co th?|nghi?m|] th? tru?ng [|test2|dây là test l?n 2|] ch?ng khoán [|M?|day la nuoc my|] và ngân hàng d?u tu quy?n l?c nh?t Ph? Wall m?i ch? b?t d?u. </div> </div> and my JQ $(document).ready(function() { var takedata = $("#textcontainer").text(); var test = 'abcd adddb'; var filterdata = takedata.match(/(\[.+\])/); alert(filterdata); //end write js }); my result is: [|co th?|nghi?m|] th? tru?ng [|test2|dây là test l?n 2|] ch?ng khoán [|M?|day la nuoc my|] . but this is'nt the result i want :(. How to get [text] for times 1 and [demo] for times 2 ?. pls help me !. thankyou :)

  Read the article

• How to correctly load dependent JavaScript files

  - by Vaibhav Garg

  I am trying to extent a website page that displays google maps with the LabeledMarker. Google Maps API defines a class called GMarker which is extended by the LabeledMarker. The problem is, I cant seem to load the LabeledMarker script properly, i.e. after the Google API loads and I get the 'GMarker not defined' error. What is the correct way to specify the scripts in such cases? I am using ASP.NET's ClientScript.RegisterClientScriptInclude() first for the google API url and then immediately after with the LabeledMarker script file. The initial google API loader writes further script links that load the actual GMarker class. Shouldnt all those scripts be executed before the next script block(LabeledMarker script) is processed. I have checked the generated HTML and the script blocks are emitted in the right order. <script src="google api url" type="text/javascript"></script> ... (the above scripts uses document.write() etc to append further script blocks/sources) ... <script src="Scripts/LabeledMarker.js" type="text/javascript"></script> Once again, the LabeledMarker.js seems to get executed before the google API finishes loading.

  Read the article

• Use continue or Checked Exceptions when checking and processing objects

  - by Johan Pelgrim

  I'm processing, let's say a list of "Document" objects. Before I record the processing of the document successful I first want to check a couple of things. Let's say, the file referring to the document should be present and something in the document should be present. Just two simple checks for the example but think about 8 more checks before I have successfully processed my document. What would have your preference? for (Document document : List<Document> documents) { if (!fileIsPresent(document)) { doSomethingWithThisResult("File is not present"); continue; } if (!isSomethingInTheDocumentPresent(document)) { doSomethingWithThisResult("Something is not in the document"); continue; } doSomethingWithTheSucces(); } Or for (Document document : List<Document> documents) { try { fileIsPresent(document); isSomethingInTheDocumentPresent(document); doSomethingWithTheSucces(); } catch (ProcessingException e) { doSomethingWithTheExceptionalCase(e.getMessage()); } } public boolean fileIsPresent(Document document) throws ProcessingException { ... throw new ProcessingException("File is not present"); } public boolean isSomethingInTheDocumentPresent(Document document) throws ProcessingException { ... throw new ProcessingException("Something is not in the document"); } What is more readable. What is best? Is there even a better approach of doing this (maybe using a design pattern of some sort)? As far as readability goes my preference currently is the Exception variant... What is yours?

  Read the article

• Png image processing in .NET.

  - by Oybek

  I have the following task. Take a base image and overlay on it another one. The base image is 8b png as well as overlay. Here are the base (left) and overlay (right) images. Here is a result and how it must look. The picture in the left is a screenshot when one picture is on top of another (html and positioning) and the second is the result of programmatic merging. As you can see in the screenshot the borders of the text is darker. Also here are the sizes of the images Base image 14.9 KB Overlay image 6.87 KB Result image 34.8 KB The size of the resulting image is also huge Here is my code that I use to merge those pictures /*...*/ public Stream Concatinate(Stream baseStream, params Stream[] overlayStreams) { var @base = Image.FromStream(baseStream); var canvas = new Bitmap(@base.Width, @base.Height); using (var g = canvas.ToGraphics()) { g.DrawImage(@base, 0, 0); foreach (var item in overlayStreams) { using (var overlayImage = Image.FromStream(item)) { try { Overlay(@base, overlayImage, g); } catch { } } } } var ms = new MemoryStream(); canvas.Save(ms, ImageFormat.Png); canvas.Dispose(); @base.Dispose(); return ms; } /*...*/ /*Tograpics extension*/ public static Graphics ToGraphics(this Image image, CompositingQuality compositingQuality = CompositingQuality.HighQuality, SmoothingMode smoothingMode = SmoothingMode.HighQuality, InterpolationMode interpolationMode = InterpolationMode.HighQualityBicubic) { var g = Graphics.FromImage(image); g.CompositingQuality = compositingQuality; g.SmoothingMode = smoothingMode; g.InterpolationMode = interpolationMode; return g; } My questions are What should I do in order to merge images to achieve the result as in the screenshot? How can I lower the size of the result image? Is the System.Drawing a suitable tool for this or is there any better tool for working with png for .NET?

  Read the article

• WebClient Lost my Session

  - by kamiar3001

  Hi folks I have a problem first of all look at my web service method : [WebMethod(), ScriptMethod(ResponseFormat = ResponseFormat.Json)] public string GetPageContent(string VirtualPath) { WebClient client = new WebClient(); string content=string.Empty; client.Encoding = System.Text.Encoding.UTF8; try { if (VirtualPath.IndexOf("______") > 0) content = client.DownloadString(HttpContext.Current.Request.UrlReferrer.AbsoluteUri.Replace("Main.aspx", VirtualPath.Replace("__", "."))); else content = client.DownloadString(HttpContext.Current.Request.UrlReferrer.AbsoluteUri.Replace("Main.aspx", VirtualPath)); } catch { content = "Not Found"; } return content; } As you can see my web service method read and buffer page from it's localhost it works and I use it to add some ajax functionality to my web site it works fine but my problem is Client.DownloadString(..) lost all session because my sessions are all null which are related to this page for more description. at page-load in the page which I want to load from my web service I set session : HttpContext.Current.Session[E_ShopData.Constants.SessionKey_ItemList] = result; but when I click a button in the page this session is null I mean it can't transfer session. How I can solve this problem ? my web service is handled by some jquery code like following : $.ajax({ type: "Post", url: "Services/NewE_ShopServices.asmx" + "/" + "GetPageContent", data: "{" + "VirtualPath" + ":" + mp + "}", contentType: "application/json; charset=utf-8", dataType: "json", complete: hideBlocker, success: LoadAjaxSucceeded, async: true, cache: false, error: AjaxFailed });

  Read the article

< Previous Page | 392 393 394 395 396 397 398 399 400 401 402 403  | Next Page >