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• jQueryUI Ajax.NET Postback Bug

  - by nigative

  Hi, I have this ASP.NET page with ASP.NET UpdatePanel and jQueryUI droppable and sortable components. The page works fine in all browsers, but doesn't in Internet Explorer (IE8 tested). After I try to call ASP.NET AJAX event (by pressing my asp.net button inside the UpdatePanel) my sortable list stops working properly inside IE browser and the browser throws the following error: Message: Unspecified error. Line: 145 Char: 186 Code: 0 URI: http://code.jquery.com/jquery-1.4.2.min.js I found out that the problem is caused by the code on line 66: $("#droppable").droppable(); If I comment it out, the sortable list works fine after ajax postbacks. But it doesn't make sense. Does anyone know what could be wrong? Thanks. P.S. I am using jQueryUI 1.8.1 and jQuery 1.4.2

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• How to connect to local MQseries queue using Python?

  - by Michal Niklas

  I am new to mqseries and I started with IBM WebSphere MQ curses. There are examples with MQ_APPLE and MQ_ORANGE queue managers. I have no problem with sending messages to local or remote queue with MQ Explorer, but I wanted to send such message from code: Python or Java. I tried Python pymqi library with code like this: import pymqi qmgr = pymqi.QueueManager(None) qmgr.connect('QM_APPLE') putq = pymqi.Queue(qmgr, 'Q1') putq.put('Hello from Python!') but I receive error: Traceback (most recent call last): File "mq_put.py", line 4, in <module> qmgr.connect('QM_APPLE') File "c:\Python26\lib\site-packages\pymqi.py", line 758, in connect raise MQMIError(rv[1], rv[2]) pymqi.MQMIError: MQI Error. Comp: 2, Reason 2540: FAILED: MQRC_UNKNOWN_CHANNEL_NAME There is QM_APPLE queue manager with Q1 local queue. What is wrong with my code?

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• dllimport C++ DLL In VB.net

  - by JFLow

  Hi Experts out there, I'm stuck at dll imports with the c++ dll and i really need help to get over this. Here is the function in the c++ dll that i want to call from my VB.net code. bool LoadNewTestPlan(const char* szPlanFileName=" "); I've tried many ways in my VB.net but always getting the error : "Attempted to read or write protected memory. This is often an indication that other memory is corrupt." I have tried passing in byte(), Marshalling with LPStr, SafeArray and nothing works. Here is the example of my code code within the module <DllImport("HPVKIfc.dll", EntryPoint:="?LoadNewTestPlan@HPVKIfc@@QAE_NPBD@Z", CharSet:=CharSet.Ansi)> _ Public Function LoadNewTestPlan(<MarshalAs(UnmanagedType.LPStr)> ByVal pln As String) As Boolean End Function Do you see anything wrong? Thanks in advance.

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• Testing input fields not available for web service in Visual Web Developer Express

  - by Rob Segal

  I have a web service that I am trying to test in Visual Web Developer Express Edition (Service Pack 1). I am working with two different websites on two different branches from an SVN repository but largely the same code. The web services are the same code but there are some code differences for other features. My problem is that when going to the web service specification page in debug mode (i.e. MyWebService.asmx) there should be text fields for inputting parameters for that web service. On one of these web sites the fields are available. On another they are not available. I don't understand why/how there should be any differences between the two setups.

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• Problem with animating the deletion of table rows in jQuery

  - by Victor

  Hey guys, I have written some jQuery code to use the "slideUp" animation when deleting rows from a table. In order for the animation to appear smooth, I wrapped the contents of each TD in the row with DIV tags, and called the slideUp function on the DIVs, removing the actual TDs upon completion of the animation. The code for that is as follows: $("tr[id$=" + rowID + "]").children("td").each(function() { $(this).children("div").slideUp(function() { $(this).parent().remove(); }); }); So far, so good. However, I noticed that this code does not remove the actual TR, only its contents, so I added the following line to remove the TR: $("tr[id$=" + rowID + "]").remove(); The problem is that after I added the line above, the animation quit working. In other words, the row simply disappears without the nice sliding effect. Does anybody know why this is so and how to get around it? Thanks in advance for your insights! Victor

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• Gmail 3-legged OAuth access -- Zend_Mail_Protocol_Exception

  - by tchaymore

  I'm trying to access Gmail by using three-legged Oauth PHP code provided by Google ('google-mail-xoauth-tools') here: http://code.google.com/apis/gmail/oauth/code.html. I have my domain registered and everything seems to go fine with OAuth, but after I authorize access I get this error: Fatal error: Uncaught exception 'Zend_Mail_Protocol_Exception' with message 'cannot connect to host; error = Connection refused (errno = 111 )' in /home/tchaymor/public_html/gmail/Zend/Mail/Protocol/Imap.php:100 Stack trace: #0 /home/tchaymor/public_html/gmail/Zend/Mail/Protocol/Imap.php(61): Zend_Mail_Protocol_Imap->connect('imap.gmail.com', '993', true) #1 /home/tchaymor/public_html/gmail/three-legged.php(170): Zend_Mail_Protocol_Imap->__construct('imap.gmail.com', '993', true) #2 {main} thrown in /home/tchaymor/public_html/gmail/Zend/Mail/Protocol/Imap.php on line 100 This is my first time using OAuth with any Google products, so it could be something totally brainless I'm missing. Any suggestions would be most welcome (as suggestions for easier alternatives). I'm more on the designer rather than coder end, so the simpler the better.

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• Google App Engine (python): TemplateSyntaxError: 'for' statements with five words should end in 'rev

  - by Phil

  This is using the web app framework, not Django. The following template code is giving me an TemplateSyntaxError: 'for' statements with five words should end in 'reversed' error when I try to render a dictionary. I don't understand what's causing this error. Could somebody shed some light on it for me? {% for code, name in charts.items %} <option value="{{code}}">{{name}}</option> {% endfor %} I'm rendering it using the following: class GenerateChart(basewebview): def get(self): values = {"datepicker":True} values["charts"] = {"p3": "3D Pie Chart", "p": "Segmented Pied Chart"} self.render_page("generatechart.html", values) class basewebview(webapp.RequestHandler): ''' Base class for all webapp.RequestHandler type classes ''' def render_page(self, filename, template_values=dict()): filename = "%s/%s" % (_template_dir, filename) path = os.path.join(os.path.dirname(__file__), filename) self.response.out.write(template.render(path, template_values))

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• Is writing eSQL database agnostic?

  - by Robert Koritnik

  Using EF we can use LINQ to read data which is rather simple (especialy using fluent calls), but we have less control unless we write eSQL on our own. Is writing eSQL database actually data store independant code? So if we decide to change data store, can the same statements still be used? Is writing eSQL strings in your code pose any serious security threats similar to writing TSQL statements in plain strings? So we moved to SPs. Could we still mode eSQL scripts outside of code as well and use some other technique to make them a bit more secure?

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• UiElement from abstract class

  - by plotnick

  I placed a control into a grid. let's say the control is derived from public class 'ButBase' which is derived in its turn from System.Windows.Controls.Button. The code normally compiles and app works just fine. But there's something really annoying. When you try to switch to xaml-design tab it will say 'The document root element is not supported by the visual designer', which is normal and I'm totally okay with that, but the thing is, that all the xaml code is underlined and VS2010 says: 'Cannot create an instance of ButBase' although still normally compiles and able to run. I've tried the same code in VS2008, it said that needs to see a public parameterless constructor in the ButBase, and even after I put one it showed the same error. What do I miss here?

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• Performance of std::pow - cache misses???

  - by Eamon Nerbonne

  I've been trying to optimize a numeric program of mine, and have run into something of a mystery. I'm looping over code that performs thousands of floating point operations, and just 1 call to pow nevertheless, that call takes 5% of the time... That's not necessarily a critical issue, but it is odd, so I'd like to understand what's happening. When I profiled for cache misses, VS.NET 2010RC's profiler reports that virtually all cache misses are occurring in std::pow... so... what's up with that? Is there a faster alternative? I tried powf, but that's only slightly faster; it's still responsible for an abnormal number of cache misses. Why would a basic function like pow cause cache-misses?

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• how to solve run time error 'Failed to create writable database file with message 'The operation couldn’t be completed. (Cocoa error 260.)'.'?

  - by user1432045

  I am beginner of iPhone I have created database but that give run time error of Failed to create writable database file with message 'The operation couldn’t be completed my code is -(void)createdatabase { NSFileManager *fileManager=[NSFileManager defaultManager]; NSError *error; NSString *dbPath=[self getDBPath]; BOOL success=[fileManager fileExistsAtPath:dbPath]; if(!success) { NSString *defaultDBPath=[[[NSBundle mainBundle]resourcePath] stringByAppendingPathComponent:@"SQL.sqlite"]; success=[fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error]; if(!success) { NSAssert1(0, @"Failed to create writable database file with message '%@'.", [error localizedDescription]); } } } give any suggestion and source code which is apply in my code

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• AsyncTask, RejectedExecutionException and Task Limit

  - by Samuh

  I am fetching lots of thumbnails from a remote server and displaying them in a grid view, using AsyncTask. The problem is, my grid view displays 20 thumbnails at a time, so that creates 20 AsyncTasks and starts 20 executes, one per thumbnail. I get RejectedExecution exception in my code. I recall reading somewhere that there is a limit to number of tasks that AsyncTask can have in its queue at a time, i might be hitting that. Was this bar lifted? Is there a way to increase this limit? Is it safe to just ignore this exception?(by having an empty catch(RejectedException e){} block?) I am running this code on Android 1.6 emulator and the API level in my code(minSDKVersion is 3). [EDIT: Added SDK and API level info]

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• How do uppercase and lowercase letters differ by only one bit?

  - by Vibhakar SInha

  I have found one example in Data and Communication Networking book written by Behrouza Forouzan regarding upper- and lowercase letters which differ by only one bit in the 7 bit code. For example, character A is 1000001 (0x41) and character a is 1100001 (0x61).The difference is in bit 6, which is 0 in uppercase letters and 1 in lowercase letters. If we know the code for one case, we can easily find the code for the other by adding or subtracting 32 in decimal, or we can just flip the sixth bit. What does all this mean? I have found myself very confused with all these things. Could someone provide examples of how these things really work out?

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• To store images in SQL or not?

  - by Brett

  Generally, I had thought it was always better to store images in the filesystem and link to it via the database entry. However, I am trying to optimize my db design and am having a few questions. My images are all really small thumbmails in black and white (not greyscale, but true B&W) and are 70x70 in size. If we take the images (which is basically a 2D array of 1 and 0), it can be stored as binary data that would be approximately 600 bytes each. So my question is whether querying the 600 bytes stored in a db would be faster than querying a link followed by accessing the filesystem; assuming there are a lot of "image" queries being made. Does anyone have any experience with this area? If it matters, I am using MySQL, and MonetDB (separately, but have the same question for both). Many thanks, Brett

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• Is there any way to automatically break into debugger when my class library functions are getting ca

  - by mishal153

  I have a managed class library (say mylib.dll) and a 3rd party managed app (say app.exe) which is using mylib.dll. I have the code of mylib.dll but not of the app.exe. So currently what i do is i build mylib.dll, copy it to app.exe's directory, start app.exe and attach to the process. That way if i put breakpoints in code mylib.dll , i see them being hit. But is there anyway to automatically break in code of mylib.dll whenever any external application calls one of its exposed methods ? ie. Only for entrypoints of the dll. thanks, Mishal

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• UiElement based on another class

  - by plotnick

  I placed a control into a grid. let's say the control is derived from public class 'ButBase' which is derived in its turn from System.Windows.Controls.Button. The code normally compiles and app works just fine. But there's something really annoying. When you try to switch to xaml-design tab it will say 'The document root element is not supported by the visual designer', which is normal and I'm totally okay with that, but the thing is, that all the xaml code is underlined and VS2010 says: 'Cannot create an instance of ButBase' although still normally compiles and able to run. I've tried the same code in VS2008, it said that needs to see a public parameterless constructor in the ButBase, and even after I put one it showed the same error. What do I miss here?

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• Load nsimage from url but only some url's work

  - by happyCoding25

  I have some code that loads an image file off the web and puts it in an image view. The problem is it works with everything but Google Charts. This is frustrating because I was relying on this to graph data for my app. Heres the url I need to load: Click to see my test chart. Im not sure why NSImage seems to refuse to load this when it works with everything elese. If you know why or have a work-around any help is appreciated. Heres some sample code I found that I'm using to load the images: NSURL *imageURL = [NSURL URLWithString:@"http://chart.apis.google.com/chart?cht=p3&chs=700x400&chd=t:20,20,20,20,20&chl=A|B|C|D|E&chco=66FF33,3333CC"]; NSLog(@"url"); NSData *imageData = [imageURL resourceDataUsingCache:NO]; NSLog(@"data"); NSImage *imageFromBundle = [[NSImage alloc] initWithData:imageData]; (Note: This code will load any image except a chart) Thanks

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• XStream <-> Alternative binary formats (e.g. protocol buffers)

  - by sehugg

  We currently use XStream for encoding our web service inputs/outputs in XML. However we are considering switching to a binary format with code generator for multiple languages (protobuf, Thrift, Hessian, etc) to make supporting new clients easier and less reliant on hand-coding (also to better support our message formats which include binary data). However most of our objects on the server are POJOs with XStream handling the serialization via reflection and annotations, and most of these libraries assume they will be generating the POJOs themselves. I can think of a few ways to interface an alternative library: Write an XStream marshaler for the target format. Write custom code to marshal the POJOs to/from the classes generated by the alternative library. Subclass the generated classes to implement the POJO logic. May require some rewriting. (Also did I mention we want to use Terracotta?) Use another library that supports both reflection (like XStream) and code generation. However I'm not sure which serialization library would be best suited to the above techniques.

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• ISerializable and backward compatibility

  - by pierusch

  hello I have to work an an old application that used binaryFormatter to serialize application data into filestream (say in a file named "data.oldformat") without any optimizazion the main class has been marked with attribute <serializable()>public MainClass ....... end class and the serialization code dim b as new binaryformatter b.serialize(mystream,mymainclass) In an attempt to optimize the serialization/deserialization process I simply made the class implement the ISerializable interface and wrote some optimized serialization routines <serializable()>public MainClass implements ISerializable ....... end class The optimization works really well but I MUST find a way to reatrive the data inside the old files for backward compatibility. How can I do that?? Pierluigi

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• Using the new jQuery Position utility script at an FF extension

  - by Nimrod Yonatan Ben-Nes

  Hi all, I'm trying to use the following code at my FF extension with no success: $('#duck').position({ of: $('#zebra'), my: "left top", at: "left top" }); (the Position manual is at http://docs.jquery.com/UI/Position) I also tried: var doc = gBrowser.selectedBrowser.contentDocument; $('#duck', doc).position({ of: $('#zebra', doc), my: "left top", at: "left top" }); Both without success.... on the other hand when I try the first code example at the web page code itself it work wonderfully... Anyone got any idea what's causing the problem? Cheers and thx in advance! Nimrod Yonatan Ben-Nes

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• Turning off auto indent when pasting text into vim

  - by Rimian

  Unfortunately, I am not an experienced vim user. But, I am making the effort to learn it. When I paste code into my document from the clipboard, I get extra spaces at the start of each new line: line line line I know you can turn off auto indent but mine doesn't seem to work because I have some other settings conflicting or something (which look pretty obvious in my .vimrc but don't seem to matter when I take them out). Can someone please show me the way to turn this off when I paste code but still have vim auto indent when I am writing code? Please see my .vimrc file: set expandtab set tabstop=2 set shiftwidth=2 set autoindent set smartindent set bg=dark set nowrap Many thanks

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• Sorting a list in OCaml

  - by darkie15

  Hi All, Here is the code on sorting any given list: let rec sort lst = match lst with [] -> [] | head :: tail -> insert head (sort tail) and insert elt lst = match lst with [] -> [elt] | head :: tail -> if elt <= head then elt :: lst else head :: insert elt tail;; [Source: Code However, I am getting an Unbound error: Unbound value tail # let rec sort lst = match lst with [] -> [] | head :: tail -> insert head (sort tail) and insert elt lst = match lst with [] -> [elt] | head :: tail -> if elt <= head then elt :: lst else head :: insert elt tail;; Characters 28-29: | head :: tail -> if elt <= head then elt :: lst else head :: insert elt tail;; ^ Error: Syntax error Can anyone please help me understand the issue here?? I did not find head or tail to be predefined anywhere nor in the code

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• Tracking fitness in a genetic algorithm

  - by Chuck Vose

  I'm still hacking on my old ruby for the undead post (I know, I know, stop trying to bring the post back from the dead Chuck). But the code has gotten a little out of hand and now I'm working on a genetic algorithm to create the ultimate battle of living and dead with the fitness being how long the battle lasts. So, I've got the basics of it down; how to adjust attributes of the game and how to acquire the fitness of a solution, what I can't figure out is how to store the fitness so that I know when I've tried a combination before. I've not been able to find much genetic code to look at let alone code that I can read well enough to tell what's going on. Does anyone have an idea how this is normally done or just simply an algorithm that could help point me in the right direction?

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• Objective C message dispatch mechanism

  - by Dolphin

  I am just staring to play around with Objective C (writing toy iPhone apps) and I am curious about the underlying mechanism used to dispatch messages. I have a good understanding of how virtual functions in C++ are generally implemented and what the costs are relative to a static or non-virtual method call, but I don't have any background with Obj-C to know how messages are sent. Browsing around I found this loose benchmark and it mentions IMP cached messages being faster than virtual function calls, which are in turn faster than a standard message send. I am not trying to optimize anything, just get deeper understanding of how exactly the messages get dispatched. How are Obj-C messages dispatched? How do Instance Method Pointers get cached and can you (in general) tell by reading the code if a message will get cached? Are class methods essentially the same as a C function (or static class method in C++), or is there something more to them? I know some of these questions may be 'implementation dependent' but there is only one implementation that really counts.

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• MVS 2008 and C99

  - by yCalleecharan

  Hi, I read with interest the post "How universally is C99 supported ?". One of the comments therein points that Microsoft doesn't support C99. But the comment symbol // works with MVS 2008 and this symbol is in C99. I have two questions: To what extent MVS 2008 support C99? Is it ok in the same code to mix C89 and C99 syntax together? So if I write my code in C89 and then place a comment //. This means that I have mixed-coding. So what does the compiler do in such a case? Check my code first with c89 and then with C99 to accept that I use // for commenting? Thanks a lot...

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