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• Does a WCF service with basicHttpBinding create a new connection for each request?

  - by Phil Wright

  I have a Silverlight client calling a WCF Service on an IIS web server. It uses the default basicHttpBinding setting for the calls. My client code has the usual Visual Studio generated proxy that is generated when using the 'Update Service Reference' menu option. Does every call to the service using that proxy use the same connection? Or does it create a connection each time a call is made and then close it down once the reply is received? As the client is actually making a SOAP call over HTTP I just assumed that every service request had a new connection created but I want to check if that is the case? (I need to know because if it creates a new connection each time then each request could end up at a different server because there are several servers being load balanced. It is uses a single connection for the duration of the proxy then I can assume they all end up at the same machine and so it would cache state.)

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• Reading in Russian characters (Unicode) using a basic_ifstream<wchar_t>

  - by Mark

  Is this even possible? I've been trying to read a simple file that contains Russian, and it's clearly not working. I've called file.imbue(loc) (and at this point, loc is correct, Russian_Russia.1251). And buf is of type basic_string<wchar_t> The reason I'm using basic_ifstream<wchar_t> is because this is a template (so technically, basic_ifstream<T>, but in this case, T=wchar_t). This all works perfectly with english characters... while (file >> ch) { if(isalnum(ch, loc)) { buf += ch; } else if(!buf.empty()) { // Do stuff with buf. buf.clear(); } } I don't see why I'm getting garbage when reading Russian characters. (for example, if the file contains ??? ??? ???, I get "??E", 5(square), K(square), etc...

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• How can I set a field to null in a Pre-Update Plugin

  - by Juergen

  I developed a Pre-Update Plugin for the Case entity. In this plugin I want to set a string field to a new value. It works smoothly if the new value is not null. But if the new value si null, it is just ignored. This works: Incident caseTarget = ((Entity) localContext.PluginExecutionContext.InputParameters["Target"]).ToEntity<Incident>(); caseTarget.ProductSerialNumber = "new value"; After the execution of the plugin, the ProductSerialNumber field has value "new value". This doesn't work: Incident caseTarget = ((Entity) localContext.PluginExecutionContext.InputParameters["Target"]).ToEntity<Incident>(); caseTarget.ProductSerialNumber = null; After the execution of the plugin, the ProductSerialNumber field has still its old value. How can I set the target's field to null?

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• NSPredicate error/behaving differently on 10.5 vs 10.6

  - by Tristan

  I am using a NSPredicate to determine if an entered email address is valid. On 10.6 it works perfectly as expected. I recently decided to get my app going on 10.5 and this is the only thing that doesn't work. The error i get is as follows: "Can't do regex matching, reason: Can't open pattern U_MALFORMED_SET (string [email protected], pattern ([\w-+]+(?:\.[\w-+]+)*@(?:[\w-]+\.)+[a-zA-Z]{2,7}), case 0, canon 0)" The code im using is as follows: NSString *regex = @"([\\w-+]+(?:\\.[\\w-+]+)*@(?:[\\w-]+\\.)+[a-zA-Z]{2,7})"; NSPredicate *regextest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex]; if ([regextest evaluateWithObject:[userEmail objectValue]] == YES) Does anyone know why this isn't working on 10.5? And how I might get it working or be able to do this test in a way compatible for both 10.5 and 10.6?

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• javascript trying to get 3rd nested array.length and value

  - by adardesign

  How can i get the 3rd nested array (in this case the array starting with "yellow") the array looks like this: [ ["Large", ["yellow", "green", "Blue"], ["$55.00", "$55.00", "$55.00"] ["Medium", ["yellow", "green", "Blue", "Red"], ["$55.00", "$55.00", "$55.00", "$55.00"] ] ["small", ["yellow", "green", "Blue", "Red"], ["$55.00", "$55.00", "$55.00", "$55.00"] ] ] I am trying to get to the ["yellow", "green", "Blue"] array's length and loop to get the values for(i=0; colorNSize.dataArray[0][0][1].length<i; i++){ alert(colorNSize.dataArray[colorNSize.Sizeindex][0][0][i])// alert's nothing } It actually alerts the length of "Large" which is "5" is there a limit for nested arrays? Can this be done?

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• How to access the subject of a compose mail item in Outlook

  - by vwfreak034

  In Outlook, I can set the subject for a new message (when composing a new mail message), but I want to prepend text. So I need to get the subject first, and then set it. Outlook.Application application = Globals.ThisAddIn.Application; Outlook.Inspector inspector = application.ActiveInspector(); Outlook.MailItem myMailItem = (Outlook.MailItem)inspector.CurrentItem; if (myMailItem != null && !string.IsNullOrEmpty(myMailItem.Subject)) { myMailItem.Subject = "Following up on your order"; } This code works on replies, but not for new messages, because in that case, myMailItem is null.

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• Force VSProps settings to override project settings

  - by Steve

  I have a vsprops file that defines the optimizations all of our projects should be built with for Visual Studio 2008. If I set the properties for the project to "inherit from parent of project defaults" it works, and fills them in the vcproj file. However, this doesn't protect me from a developer checking in a project file that changes the optimizations. In this case, the project settings are used over the vsprops settings. I need to make it so that vsprops always takes precedence over what is in the vcproj file. Is this possible? Other workarounds are also welcome.

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• Will pool the connection help threading in sqlite (and how)?

  - by mamcx

  I currently use a singleton to acces my database (see related question) but now when try to add some background processing everything fall apart. I read the sqlite docs and found that sqlite could work thread-safe, but each thread must have their own db connection. I try using egodatabase that promise a sqlite wrapper with thread safety but is very buggy, so I return to my old FMDB library I start to see how use it in multi-thread way. Because I have all code with the idea of singleton, change everything will be expensive (and a lot of open/close connections could become slow), so I wonder if, as the sqlite docs hint, build a pooling for each connection will help. If is the case, how make it? How know wich connection get from the pool (because 2 threads can't share the connection)? I wonder if somebody already use sqlite in multu-threading with NSOperation or similar stuff, my searching only return "yeah, its possible" but let the details to my imagination...

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• Remove a certain value from string which keeps on changing

  - by user2971375

  I m trying to make a utility to generate a Insert script of sql tables along with relational table. I got all the values in c#. Now I want to remove the one column name and its value from the script.most probably the identity column. Eg. The string I have (which keeps on changing with table name and varies) INSERT Core.Customers ([customerId],[customername],[customeradress],[ordernumber]) Values(123,N'Rahul',N'244 LIZ MORN',2334) NOW I know I have to remove CustomerId. (sometimes need to be replaces with @somevariable) Please give me an efficient way how to retrieve customerId value and Deleting column name and value . Conditions: insert script length and columns names keep changing. Method should return the deleted value. At some point of time customer id can be same as order id. In that case my string.remove method fails.

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• Matrix Comparison algorithm

  - by SysAdmin

  If you have 2 Matrices of dimensions N*M. what is the best way to get the difference Rect? Example: 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 4 5 4 3 2 3 <---> 2 3 2 3 2 3 2 3 2 3 4 5 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 2 3 | | \ / Rect([2,2] , [3,4]) 4 5 4 4 5 2-> A (2 x 3 Matrix) The best I could think of is to scan from Top-Left hit the point where there is difference. Then scan from Bottom Right and hit the point where there is a difference. But In worst case, this is O(N*M). is there a better efficient algorithm?

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• Sample the deltas between values using boost::accumulators

  - by Checkers

  I have a data set with N integers (say, 13, 16, 17, 20) where each next sample is incremented by some value (3, 1, 3 in this case) and I want to use boost::accumulators::accumulator_set to find various statistics of the second sequence. I want to be able to do something like this: accumulator_set< double, features< tag::mean > > acc; ... acc(13); acc(16); acc(17); acc(20); ...BUT sampling the differences instead of the actual values. How can I do that with accumulator_set without keeping track of the last value manually?

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• Comparing Values with newlines in Selenium IDE

  - by Zachary

  I am writing a Selenium test case using the IDE, and I have a that I want to verify is equal to the value I expect. The newlines in the box seem to be causing some trouble, as when I use the "verifyValue" command I get this: # [info] Executing: |verifyValue | organizationContainer.organization.defaultLegalText | This is some test legal text. I just did a new line. Hopefully these new lines will get preserved. | # [error] Actual value 'This is some test legal text. I just did a new line. Hopefully these new lines will get preserved.' did not match 'This is some test legal text. I just did a new line. Hopefully these new lines will get preserved. ' Is there a better way to compare strings in the Selenium IDE

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• setlocale/strftime issue

  - by Manos Dilaverakis

  I am using the following to output the full name of a month in Greek. setlocale(LC_TIME, 'el_GR'); strftime("%B"); This works, except the output string is ISO-8859-7 (greek code page), which is a problem since I need a UTF-8 string. I could put this through iconv to convert it, but I was wondering if there was a way to do that without resorting to an extra function. Could you somehow tell strftime to output a UTF-8 string in this case?

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• Is it possible to use IPC inside of a IE8 Browser Helper Object?

  - by Joel

  I need to communicate with a Service using IPC from inside of a Browser Helper Object (registered with IE8). Unfortunately, all of this communication is done through an Assembly API that I have no control over. Whenever this API starts up I get the following error: ExceptionSystem.Runtime.Remoting.RemotingException: Failed to connect to an IPC Port: The system cannot find the file specified. I realize that it is difficult to discern what the issue is without source. However I am curious if anyone knows of anything sort of permissions or DLL issues that would prevent IPC from working in this case.

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• Thread safety of Matlab engine API

  - by Jeremy

  I have discovered through trial and error that the MATLAB engine function is not completely thread safe. Does anyone know the rules? Discovered through trial and error: On Windows, the connection to MATLAB is via COM, so the COM Apartment threading rules apply. All calls must occur in the same thread, but multiple connections can occur in multiple threads as long as each connection is isolated. From the answers below, it seems that this is not the case on UNIX, where calls can be made from multiple threads as long as the calls are made serially.

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• PHP reading 'get' veriable that may or may not have been set

  - by thecoshman

  Simply put, if you try to read the value of a get variable, what happens if said variable had not be put into the URL. Example: you request the page test.php, in that file it tries to read the value of $_GET['message']. What happens in this case? dose the value just get returned as ''? Dose this mean, that if I am always expecting a value to be entered, and am not willing to accept a value of '' that I can just do something like $foo = $_GET['bar']; if($foo == ''){ // Handle my 'error' } else { // $foo should now have a value that I can work with } Please bare in mind I know that I could use isset($_GET['bar']) But I don't just want to know if it is set, I don't care if it is or not, I just care if it has a value that is more then just an empty string.

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• Recover from inadvertent skip during rebase

  - by Benjol

  I just tried to rebase a very old branch with a minor modification onto my master. There was a problem with merging just one of the three files involved, so I did an unthinking --skip, thinking that it would just skip that file, but as it happened, it seems to have skipped all my changes, and rolled forwards. So now the rebase is finished, and my changes seem to have disappeared. I've seen the question about undoing rebase, but it's all greek to me, I see the reflog, but I don't know which commit the branch was attached to before the rebase. In any case, I don't really need to undo the rebase, I just want to be able to recover the changes in the two files. Is there anyway to do this properly (failing this, I'll just have to restore yesterday's backup of my repository and pick the bits out by hand).

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• Getting Bad file descriptor when running Tornado AsyncHTTPTestCase

  - by Will

  When running a test using the Tornado AsyncHTTPTestCase I'm getting a stack trace that isn't related to the test. The test is passing so this is probably happening on the test clean up? I'm using Python 2.7.2, Tornado 2.2. The test code is: class AllServersHandlerTest(AsyncHTTPTestCase): endpoint = AllServersHandler.endpoint # '/rest/test/' def test_server_status_with_advertiser(self): on_new_host(None, '127.0.0.1') response = self.fetch(self.endpoint, method='GET') result = json.loads(response.body, 'utf8').get('data') self.assertEquals(['127.0.0.1'], result) The test passes ok, but I get the following stack trace from the Tornado server. OSError: [Errno 9] Bad file descriptor INFO:root:200 POST /rest/serverStatuses (127.0.0.1) 0.00ms DEBUG:root:error closing fd 688 Traceback (most recent call last): File "C:\Python27\Lib\site-packages\tornado-2.2-py2.7.egg\tornado\ioloop.py", line 173, in close os.close(fd) OSError: [Errno 9] Bad file descriptor Any ideas how to cleanly shutdown the test case?

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• MIDlet + BlackBerry API = verification error?

  - by Kilnr

  Hi, Is there any way to write a MIDlet, but still use BlackBerry API classes and functions (including the APIs that require code signing)? In particular, I'm trying to use Kuix (http://www.kalmeo.org/projects/kuix). A pure MIDlet + Kuix (so without BlackBerry stuff) works perfectly after I converted the jar/jad to a cod file. As soon as I add BlackBerry API-stuff (CoverageInfo.COVERAGE_DIRECT in this case) I get a verification error when trying to run the cod file: Error starting $name: Module $name has verification error 2410 at offset 9a4f What can I do to solve this?

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• How to deal with symbolic links when going between Linux and Windows?

  - by Jesse Beder

  I have a django project that runs on a Linux server, and I've been working on it both on Linux and OS X. I've noticed that some of the pages are a bit off, to put it politely, in Internet Explorer, and so I checked out the subversion repository on Windows and tried to run a local server. My media directory has symbolic links to all of the media from each different app, and obviously Windows doesn't know what to do with them. I could simply hard-copy or link everything manually in Windows, but then I wouldn't be able to check that in (since the site runs on a Linux server), so it'd be a pain in the neck. What is typically done in this case?

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• Multiple calls to AlarmManager.setRepeating deliver the same Intent/PendingIntent extra values, but

  - by Chris Boyle

  Solved while writing this question, but posting in case it helps anyone: I'm setting multiple alarms like this, with different values of id: AlarmManager alarms = (AlarmManager)context.getSystemService( Context.ALARM_SERVICE); Intent i = new Intent(MyReceiver.ACTION_ALARM); // "com.example.ALARM" i.putExtra(MyReceiver.EXTRA_ID, id); // "com.example.ID", 2 PendingIntent p = PendingIntent.getBroadcast(context, 0, i, 0); alarms.setRepeating(AlarmManager.RTC_WAKEUP, nextMillis, 300000, p); // 5 mins ...and receiving them like this: public void onReceive(Context context, Intent intent) { if (intent.getAction().equals(ACTION_ALARM)) { // It's time to sound/show an alarm final long id = intent.getLongExtra(EXTRA_ID, -1); The alarm is delivered to my receiver at the right times, but often with EXTRA_ID set to the wrong value: it's a value that I have used at some point, just not the one that I wanted delivered at that particular time.

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• Grails: JSONP callback without id and class in JSON file

  - by Klaas

  Hi, I am working on a REST based interface where people get a json file. The client needs to access the file from another Domain. I use jsonp which works so far. My problem is the rendering in Grails. At the moment I use the 'as JSON' to marshalling the object: render "${params.jsoncallback}(${user as JSON})" The Json file getting to the client inclused all attributes, incluing the id and class, which I do not want to have in there. In case it is not jsonp, I do it this way, which works great: render(contentType:'text/json'){ userName user.userName userImage user.userImage : : } So how do I get the id and class attributes out of the json when rendering "user as JSON"? Any idea? best regards, Klaas

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• Query to show images with recent posts in Wordpress sidebar/widget

  - by Peter

  To show recent items from a Wordpress category in a widget I'm using this code... <ul> <?php $recent = new WP_Query("cat=1231&showposts=5"); while($recent->have_posts()) : $recent->the_post();?> <li><a href="<?php the_permalink() ?>" rel="bookmark"> <?php the_title(); ?> </a></li> <?php endwhile; ?> </ul> ...but how can I make this query also display the first image in each post, and is there any way to set a 'default' image in case there is no image? Is there also a way to use thumbnails here, rather than loading the full size image and using HTML to resize?

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• Efficiency of checking for null varbinary(max) column ?

  - by Moe Sisko

  Using SQL Server 2008. Example table : CREATE table dbo.blobtest (id int primary key not null, name nvarchar(200) not null, data varbinary(max) null) Example query : select id, name, cast((case when data is null then 0 else 1 end) as bit) as DataExists from dbo.blobtest Now, the query needs to return a "DataExists" column, that returns 0 if the blob is null, else 1. This all works fine, but I'm wondering how efficient it is. i.e. does SQL server need to read in the whole blob to its memory, or is there some optimization so that it just does enough reads to figure out if the blob is null or not ? (FWIW, the sp_tableoption "large value types out of row" option is set to OFF for this example).

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• Drupal join on taxonomy terms

  - by ciscoheat

  I have a Drupal setup like this: Content type: Apartments Vocabulary: Areas, that can be used with Apartments. Content type: User profile, with a Content Taxonomy Field for Areas so users can select what areas they are interested in. I would like a view that shows all the user profiles that matches the apartments in their area. A "User profile <- Areas <- Apartments" join in other words. I've been mucking around with the views interface for a while but it's not clear to me how the relations can be setup to achieve this. Can someone give me a hint? In case this cannot be easily solved with views, what is a good way of doing it otherwise? Thanks for your help.

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