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• Websphere MQ 7.0 + jars compatible with 5.3 and 6.0 MQSeries servers ?

  - by avinash

  I tried connecting jms client with 5.3 / 6.0 MQseries client jars to 7.0+ server, but it threw follwoing exception com.ibm.mq.MQException: MQJE001: Completion Code 2, Reason 2423 at com.ibm.mq.MQQueueManager.sequentialConstruct(MQQueueManager.java:904) at com.ibm.mq.MQQueueManager.(MQQueueManager.java:865) at com.ibm.mq.MQSPIQueueManager.(MQSPIQueueManager.java:83) at com.ibm.mq.jms.MQConnection.createQM(MQConnection.java:2009) at com.ibm.mq.jms.MQConnection.createQMNonXA(MQConnection.java:1496) at com.ibm.mq.jms.MQQueueAgentThread.setup(MQQueueAgentThread.java:306) at com.ibm.mq.jms.MQQueueAgentThread.run(MQQueueAgentThread.java:1672) at java.lang.Thread.run(Thread.java:570) I do understand from http://www.ibm.com/developerworks/websphere/library/techarticles/0704_xu/0704_xu.html that it's not possible to use previous version client libs. But my question is are these latest client libs backward compatible with 5.3 / 6.0 servers ?

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• Linq to SQL DataContext Windsor IoC memory leak problem

  - by Mr. Flibble

  I have an ASP.NET MVC app that creates a Linq2SQL datacontext on a per-web-request basis using Castler Windsor IoC. For some reason that I do not fully understand, every time a new datacontext is created (on every web request) about 8k of memory is taken up and not released - which inevitably causes an OutOfMemory exception. If I force garbage collection the memory is released OK. My datacontext class is very simple: public class DataContextAccessor : IDataContextAccessor { private readonly DataContext dataContext; public DataContextAccessor(string connectionString) { dataContext = new DataContext(connectionString); } public DataContext DataContext { get { return dataContext; } } } The Windsor IoC webconfig to instantiate this looks like so: <component id="DataContextAccessor" service="DomainModel.Repositories.IDataContextAccessor, DomainModel" type="DomainModel.Repositories.DataContextAccessor, DomainModel" lifestyle="PerWebRequest"> <parameters> <connectionString> ... </connectionString> </parameters> </component> Does anyone know what the problem is, and how to fix it?

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• XML: What to use as a list separator

  - by Heinzi

  There are two ways to specify lists of values in XML. Variant 1: <Database Name="myDatabase"> <Table Name="myTable1" /> <Table Name="myTable2" /> <Table Name="myTable3" /> ... </Database> Variant 2: <Database Name="myDatabase" Tables="myTable1 myTable2 myTable3 ..." /> Clearly, Variant 1 is cleaner and can be extended more easily, but im many cases Variant 2 is more readable and "user-friendly". When using Variant 2, what should be used as the separator? The XML Schema standard seems to prefer whitespace, whereas some real-world examples use commas instead. Is there a particular reason to choose one over the other (assuming that the values contain neither whitspace nor commas)?

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• Why is my asp:Substitution control suddenly not working in ASP.NET 4.0?

  - by Steve Wortham

  I just upgraded my site from ASP.NET 3.5 to 4.0. I've been working through some breaking changes and there were more than I expected. One I can't figure out, however, is why my <asp:Substitution /> control suddenly stopped working like it should. It's supposed to ignore the output cache settings of the parent page and update upon every request. For some reason that isn't happening. It's caching for the full 10 minutes (the OutputCache setting for my home page). Any ideas?

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• why gcc 4.x default reserve 8 bytes for stack on linux when calling a method?

  - by nikcname

  as a beginner of asm, I am checking gcc -S generated asm code to learn. why gcc 4.x default reserve 8 bytes for stack when calling a method? func18 is the empty function with no return no param no local var defined. I can't figure out why 8 bytes is reserved here (neither any forum/site mention for the reason, ppl seems take it for granted) is it for the %ebp just push? or return type?! many thx! .globl _func18 _func18: pushl %ebp movl %esp, %ebp subl $8, %esp .text

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• why gcc 4.x default reserve 8 bytes for stack on linux when calling a method?

  - by nikcname

  as a beginner of asm, I am checking gcc -S generated asm code to learn. why gcc 4.x default reserve 8 bytes for stack when calling a method? func18 is the empty function with no return no param no local var defined. I can't figure out why 8 bytes is reserved here (neither any forum/site mention for the reason, ppl seems take it for granted) is it for the %ebp just push? or return type?! many thx! .globl _func18 _func18: pushl %ebp movl %esp, %ebp subl $8, %esp .text

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• How to reuse socket in .NET?

  - by Hermann

  I am trying to reconnect to a socket that I have disconnected from but it won't allow it for some reason even though I called the Disconnect method with the argument "reuseSocket" set to true. _socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); _socket.Connect(ipAddress, port); //...receive data _socket.Disconnect(true); //reuseSocket = true //...wait _socket.Connect(ipAddress, port); //throws an InvalidOperationException: Once the socket has been disconnected, you can only reconnect again asynchronously, and only to a different EndPoint. BeginConnect must be called on a thread that won't exit until the operation has been completed. What am I doing wrong?

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• VS2010 converted project invalid reference

  - by Nathan

  Opening a .Net 2 project in VS2010 it converts the project without any issues BUT when I attempt to build it fails. The reason is that in VS2005 a reference was added to System.Web.Extensions which is a .Net 3.5 assembly. Now VS2005 never complained at this and quite happily worked but VS2010 is far more strict and won't allow it. I've tried changing the targeted framework to .Net 3.5 but I get another situation there where the web page is never displayed, it simply hangs not even getting to Applicatin_OnStart. Any help either on adding the reference with .Net 2 as target framework (prefered option for time) or getting the .Net 3.5 version to work would be greatly appreciated.

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• NSNumberFormatter crashing iPhone SDK 4.0b2

  - by Ward

  Hey there, I've got an app that's been in the app store for a while and functions perfectly on OS 3.1 - 3.13. However, when tested on 4.0b2 I noticed that it crashes in the same place every time, but only on the device, never on the simulator. I'm using a 3GS to test. On loadView I initialize an NSNumberFormatter object which is declared and retained in the interface so I have access to it everywhere. In my method I call it several times to convert string values into nsnumbers to be stored in a mutable dictionary. Here's an example: [myDictionary setObject:[myStyleFormatter numberFromString:@"1"] forKey:@"hours"]; [myDictionary setObject:[myStyleFormatter numberFromString:@"30"] forKey:@"minutes"]; [myDictionary setObject:[myStyleFormatter numberFromString:@"10"] forKey:@"seconds"]; For some reason it crashes as soon as it tries to set hours. The error is "attempt to insert nil value (key: hours)" Have I been doing something wrong all along? Has the api changed for 4.0b2? Thanks, Howie

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• How do I properly embed third-party frameworks in my Cocoa application?

  - by Jordan Kay

  I am writing a Cocoa application that makes use of the ParseKit framework (http://www.parsekit.com/). I've included the Framework in the proper folder, added a Copy Files build phase, and added it to the build phase. I can build and launch the application on my Mac. However, when I try to run it on another Mac, it crashes. The Console shows the following error message: dyld: Library not loaded: /Users/Jordan/Files/ParseKit/build/Debug/ParseKit.framework/Versions/A/ParseKit It looks like when the app launches, it is looking for the framework on my local drive. However, the framework is in the Copy Files build phase, so it has been copied into that application's Contents/Frameworks folder. If if the application were looking in this folder, it would be able to load the framework just fine, but for some reason it's looking for it on my local drive on the original Mac (which obviously doesn't exist on the other Mac). What am I doing wrong?

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• iPhone Simulator chrashes in NSKeyedUnarchiver after setting base SDK

  - by Florian

  Hi! I started a project in xcode (3.2 on snow leopard) with base sdk 3.1.2. Now I changed this setting to 3.0 and it compiles without a warning. There are no problems running the app on the device, but the simulator crashes on launch every time with the following exception: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '[NSKeyedUnarchiver initForReadingWithData:]: incomprehensible archive (0x4e, 0x49, 0x42, 0x41, 0x72, 0x63, 0x68, 0x69)' I do not use the NSKeyedUnarchiver, so why is the app trying to call it? And what archive is incomprehensible? I reset the simulator before building, so there are no userDefaults or anything else around. Thanks for your help!

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• HiLo: how to control Low values

  - by Sandor Drieënhuizen

  I'm using the HiLo generator in my S#rpArchitecture/NHibernate project and I'm performing a large import batch. I've read somewhere about the possibility to predict the Low values of any new records because they are generated on the client. I figure this means I can control the Low values myself or at least fetch the next Low value from somewhere. The reason I want to use this is that I want to set relations to other entities I'm about to insert. They do not exist yet but will be inserted before the batch transaction completes. However, I cannot find information about how to set the Low values or how to get what Low value is up next. Any ideas?

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• jTabbedPane opens different tab on loading

  - by Santeron

  Hey mates, First of all I'm using netbeans as my IDE and I don't know if this is causing it. When I run my program (even if I have build it and run the .jar) I think it selects the tab that was previously selected (before quiting). So if for example I close the app with the third tab selected, it starts up with that selected again. Is there a known solution for this? The selectedIndex property on the jTabbedPane is set to 0. Shouldn't this property be the default onLoad value? Thx in advance, Jimmy PS. BTW for some reason it didn't submit my question in Opera (?)

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• Scheme early "short circuit return"?

  - by Suan

  I'm trying to find out how I can do an "early return" in a scheme procedure without using a top-level if or cond like construct. (define (win b) (let* ((test (first (first b))) (result (every (lambda (i) (= (list-ref (list-ref b i) i) test)) (enumerate (length b))))) (when (and (not (= test 0)) result) test)) 0) For example, in the code above, I want win to return test if the when condition is met, otherwise return 0. However, what happens is that the procedure will always return 0, regardless of the result of the when condition. The reason I am structuring my code this way is because in this procedure I need to do numerous complex checks (multiple blocks similar to the let* in the example) and putting everything in a big cond would be very unwieldy.

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• SQL 2008 Database tuning advisor won't start

  - by Andrew Hancox

  For some reason I can't get DTA to connect to my development machine. It connects to a remote DB just fine but when I point it to my dev machine I get an error saying: Failed to initialize MSDB database for tuning (exit code: -1073741819). I'm pretty sure it's not a permissions issue since I've used profiler to capture what it's doing and all of the commands it's run so far look fine and are being run under my account which is associated with the sysadmin role, when I run them in sql management studio they go through fine. I'm pretty convinced that the problem is related to creating the objects in MSDB that are used by DTA but I tried creating these manually (I found scripts on the web) and it just seems to push the problem along the line slightly. I'm going out of my mind - have even tried reinstalling SQL but that's not fixed it. I'm using SQL 2008 with SP1 (10.0.2531) on windows server 2008 (patched up to date). SAVE ME!!!!!

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• Ajax Upload using valums ajax upload plugin inside a form.

  - by idrish

  Hi , i just came across this ajax upload plugin and i wish to use it inside a form as shown in the demo page example 3. For some reason i am not able to make it work. I am not sure what parameters come into the function. For example here is my sample code. $(document).ready(function(){ var upload = new AjaxUpload('property_i', { action: 'submitproperty.php', autoSubmit: false, onSubmit : function(file , extension){ return false; } }); var upload_data = upload.setData({ 'propertytype':'propertytype' }); }); Now the ID used in the AjaxUpload function should be ID of the or of the Entire form. Also how do i use setData method. Any suggestions or links will be very helpful. Thanks

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• Container Options in AWS Elastic Beanstalk

  - by Sangram Anand

  We have deployed a java webapplication in Elastic Beanstalk with the minimum instance count 1 and max instance count 2 for Autoscaling. The custom AMI we are using is c1.medium with Sun JDK 6. The environment status changed to yellow and then red. After checking into the log file from the snapshot logs we found a exception - Caused by: java.lang.OutOfMemoryError: Java heap space. Assuming this could be one of the possible reason for the Environment failure. The settings that we have configured in the Environment Container option are Initial JVM Heap Size (MB) - 256M Maximum JVM Heap Size (MB) - 512m The maximum heap size the java virtual machine will ever consume, specified on the JVM launch command line using -Xmx. Maximum JVM Permanent Generation Size (MB) - 512m Should i increase the Heap size from 512m to more or is it fine.

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• JavaScript inline events syntax

  - by Mic

  Is there any reason to use one of the following more than the others: <input type="button" value="b1" onclick="manageClick(this)" /> <input type="button" value="b2" onclick="manageClick(this);" /> <input type="button" value="b2" onclick="manageClick(this);return false;" /> <input type="button" value="b3" onclick="return manageClick(this);" /> <input type="button" value="b4" onclick="javascript:return manageClick(this);" /> And please do not spend your valuable time to tell me to use jQuery or attachEvent/addEventListener. It's not really the objective of my question.

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• When to use UserControl vs. Control in Silverlight?

  - by Dov

  I'm just getting my feet wet in Silverlight, and don't really understand the differences and pros/cons of creating a UserControl vs. creating a Control for the same task (as in when you right click on a selection in Expression Blend, for instance). It seems like selecting "Make Into Control" just creates a new template for the base type you specify, whereas creating a UserControl creates a whole new base class. Is that correct? In this particular instance, I'm creating a custom text box control that only takes numbers, and divides itself into 3 sections, storing 3 values into separate properties as pictured below. In this particular case, which would be best? Update (Additional Question): Why can't I use Template Binding with a UserControl, but I can with a Control? That's one reason I thought that making a UserControl might not be the right decision.

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• emails not going out to all users

  - by user156814

  I have a few scripts that send out emails to my users, and for some reason not all users are getting the email. The site is not live yet, so its no big deal yet but I dont understand why. I have set up a few fake accounts, one with my school email, one with hotmail and one with yahoo. When I sign up with my school email I recieve the welcome email, but I get nothing with the other email accounts. The same thing with my 'forgot password' email. Only my school email works, yahoo and hotmail arent working... I'm running on a Linux server with Apache. Using PHP and the kohana framework 2.3.4 Thanks.

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• Focus In An ItemsControl

  - by Andrew

  I have an ItemsControl that uses a DataTemplate. The DataTemplate contains a TextBox, which can receive keyboard focus. I need to be able to move the keyboard focus from the currently focused TextBox in the DataTemplate to the next TextBox, as if the Tab key has been pressed. I've noticed that there is a UIElement.MoveFocus() method, but this begs the question as to which UIElement should be used to call the method. This is probably the reason why I haven't gotten this method to work for me... Any help would be really appreciated! Thanks, Andrew

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• Setting data source for reports in Crystal Reports 2008 Java (performance)

  - by Daniel

  Hi, we have Crystal Reports 2008 on the server, and use the Java SDK to display reports and convert them to PDF. Since the server hat its own database, we have to set the data source on the DatabaseController to make CR connect to this database. We do it like specified in the docs, and tried the functions in CRJavaHelper, but for a reason unknown to me setting the connection string takes 300ms to 1500ms. What is the fastest way to tell Crystal which datasource to use in its reports? I already saw a JNDI name somewhere, but i don't believe CR actually does a JNDI lookup to find an existing datasource, doesn't it?

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• Drawing a path with a line in OpenLayers using JavaScript

  - by Andreas Grech

  I have seen the examples presented here of how to draw a line but the examples only show how to do it with the mouse, by clicking. What I want to do is draw the line manually using JavaScript given a list of Longitude and Latitude coordinates. The reason I cannot work on the source provided in the link above is because they are only calling activate on the feature, and then let the user point and click on the map. Has anyone ever drew a path on an OpenLayers map programatically? What I want to do is exactly this: http://openspace.ordnancesurvey.co.uk/openspace/example4.html, but without using OpenSpace.

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• CALayer drawInContext vs addSublayer

  - by Michael

  How can I use both of these in the same UIView correctly? I have one custom subclassed CALayer in which I draw a pattern within drawInContext I have a another in which I set an overlay PNG image as the contents. I have a third which is just a background. How do I overlay all 3 of these items? [self.layer addSublayer:bottomLayer]; // this line is the problem [squaresLayer drawInContext:viewContext]; [self.layer addSublayer:imgLayer]; The other 2 by themselves draw correctly if I do them in that order. No matter where I try and put bottomLayer, it always prevents squaresLayer from drawing. The reason I need 3 layers is I intend to animate the colors in the background and custom layers. The top layer is just a graphical overlay.

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• Why array size in llvm created by llvm's internal tools is not good enough for llvm?

  - by vava

  I'm getting strange error message from the following code: ArrayType * arrayType = ArrayType::get(Type::getInt32Ty(ctx), 0); stack = builder->CreateAlloca(arrayType, ConstantArray::get(arrayType, std::vector<Constant *>())); This code compiles fine but it gives me llvm::Value* getAISize(llvm::LLVMContext&, llvm::Value*): Assertion `Amt-getType() == Type::getInt32Ty(Context) && "Malloc/Allocation array size is not a 32-bit integer!"' failed. during execution. What's interesting, is that I never said of what type array size should be, it was created somewhere inside helper functions. So I naturally see no good reason for assert to be there. But I must be doing something wrong anyway, can you help me spot the problem? Thanks in advance. PS. LLVM, as good as it is, lacking documentation tremendously.

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