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• ASMX Still slow after 'Generate serialization assembly'

  - by Buzzer

  This question is related to: http://stackoverflow.com/questions/784918/asmx-web-service-slow-first-request. I inherited a proxy to a legacy ASMX Service. Basically as the post above states, the first call performance is literally 10 times slower than the subsequent calls. I went ahead and turned on ‘Generate serialization assembly' on the project that contains the proxy. The 'serializers' assembly is actually generated. However, I haven't seen any performance increase at all. Do I need to do anything else other than make sure the 'serializers' assembly is in the client's bin directory? Do I have to 'link' the proxy to the 'serializers' assembly during proxy generation (wsdl.exe)? I guess I'm stuck at this point. J Saunders where u at? :)

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• Perl unit test - start a tcp server & continue

  - by John

  I am trying to write a unit test for a client server application. To test the client, in my unit test, I want to first start my tcp server (which itself is another perl file). I tried to start the tcp server by forking: if (! fork()) { system ("$^X server.pl") == 0 or die "couldn't start server" } So when I call "make test" after "perl Makefile.PL", this test starts & I can see the server starting but after that the unit test just hangs there. So I guess I need to start this server in background and I tried the "&" at the end to force it to start in background & then test to continue. But, I still couldn't succeed. What am I doing wrong? Thanks.

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• How do I create an OpenCV image from a PIL image?

  - by scrible

  I want to do some image processing with OpenCV (in Python), but I have to start with a PIL Image object, so I can't use the cvLoadImage() call, since that takes a filename. This recipe (adapted from http://opencv.willowgarage.com/wiki/PythonInterface) does not work because cvSetData complains argument 2 of type 'void *' . Any ideas? from opencv.cv import * from PIL import Image pi = Image.open('foo.png') # PIL image ci = cvCreateImage(pi.size, IPL_DEPTH_8U, 1) # OpenCV image data = pi.tostring() cvSetData(ci, data, len(data)) I think the last argument to the cvSetData is wrong too, but I am not sure what it should be.

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• Jquery Event onChange for Div

  - by David

  I have a page with the following two divs: <div id="searchResults"> </div> <div class="postSearchOptions" style="display: none;"> </div> Is there any way that I can make the "postSearchOptions" div appear when the "searchResults" div is updated by an AJAX call? I don't control the AJAX calls and I want to detect any change in the "searchResults" div. I tried writing the following JQuery code, but then realized that it requires Jquery 1.4 and I only have 1.3: $("#searchResults").live("change", function() { $(".postSearchOptions").css("display", "inline"); }); Is there any way to catch the event of the searchResults div changing using either standard JavaScript or Jquery 1.3? Thanks!

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• Potential for SQL injection here?

  - by Matt Greer

  This may be a really dumb question but I figure why not... I am using RIA Services with Entity Framework as the back end. I have some places in my app where I accept user input and directly ask RIA Services (and in turn EF and in turn my database) questions using their data. Do any of these layers help prevent security issues or should I scrub my data myself? For example, whenever a new user registers with the app, I call this method: [Query] public IEnumerable<EmailVerificationResult> VerifyUserWithEmailToken(string token) { using (UserService userService = new UserService()) { // token came straight from the user, am I in trouble here passing it directly into // my DomainService, should I verify the data here (or in UserService)? User user = userService.GetUserByEmailVerificationToken(token); ... } } (and whether I should be rolling my own user verification system is another issue altogether, we are in the process of adopting MS's membership framework. I'm more interested in sql injection and RIA services in general)

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• Minimizing the number of boxes that cover a given set of intervals

  - by fortran

  Hi, this is a question for the algorithms gurus out there :-) Let S be a set of intervals of the natural numbers that might overlap and b a box size. Assume that for each interval, the range is strictly less than b. I want to find the minimum set of intervals of size b (let's call it M) so all the intervals in S are contained in the intervals of M. Trivial example: S = {[1..4], [2..7], [3..5], [8..15], [9..13]} b = 10 M = {[1..10], [8..18]} // so ([1..4], [2..7], [3..5]) are inside [1..10] and ([8..15], [9..13]) are inside [8..18] I think a greedy algorithm might not work always, so if anybody knows of a solution of this problem (or a similar one that can be converted into), that would be great. Thanks!

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• Retrieving text from password field [python][pyqt4]

  - by Dr. Johnson

  def welcomeStage (self): self.test = QtGui.QLineEdit (self) self.test.move (50, 150) QtCore.QObject.connect (self.test, QtCore.SIGNAL ('returnPressed()'), self.passwordStage) def passwordStage (self): self.email = self.test.text() self.test.clear() self.test.setEchoMode (QtGui.QLineEdit.Password) QtCore.QObject.connect (self.test, QtCore.SIGNAL ('returnPressed()'), self.loginStage) def loginStage (self): self.pwd = self.test.text() print self.pwd if len (self.pwd) < 0: welcomeStage () return Simply put, I am making a login form. The user enters their email, then the text field is cleared and echo mode is set to Password mode. The text() function returns the email fine, but when I call text() after I have changed the echo mode, it returns 0. I've been pouring over the documentation looking for anything regarding the text() function and how it operates when Password mode is on, however I have not found anything. Does anybody know how this is done?

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• Serializing response from JSP and converting them to C# objects

  - by SARAVAN

  I have a silverlight web application. From this app I am making a call to .jsp pages using WebClient class. Now jsp returns a response in the following format { "results":[{"Value":"1","Name":"Advertising"}, {"Value":"2","Name":"Automotive Expenses"},{"Value":"3","Name":"Business Miscellaneous"}] } The above response is assigned to my Stream object. I have a c# class CategoryType public class CategoryType { public string Value{get;set;} public string Name{get;set;} } My aim is to convert the reponses in to Collection<CategoryType> and use it in my C# Code As of now I am trying to use DataContractJSONSerialiser. But not sure if there is an easy and efficent way to do this. Any help would be appreciated

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• Using a c# .net object in an Excel VBA form

  - by Mark O'G

  Hi I have a .net object that I want to use in Excel. I have an existing VBA script that i need to alter to call this the object from. I have then converted the object to a TLB. I've not really touched on this area before so any help will be appreciated. I have created an interface [Guid("0F700B48-E0CA-446b-B87E-555BCC317D74"),InterfaceType(ComInterfaceType.InterfaceIsDual)] public interface IOfficeCOMInterface { [DispId(1)] void ResetOrder(); [DispId(2)] void SetDeliveryAddress(string PostalName, string AddressLine1, string AddressLine2, string AddressLine3, string AddressLine4, string PostCode, string CountryCode, string TelephoneNo, string FaxNo, string EmailAddress); } I have also created an class that inherits that object. [ClassInterface(ClassInterfaceType.None), ProgId("NAMESPACE.OfficeCOMInterface"), Guid("9D9723F9-8CF1-4834-BE69-C3FEAAAAB530"), ComVisible(true)] public class OfficeCOMInterface : IOfficeCOMInterface, IDisposable { public void ResetSOPOrder() { } public void SetDeliveryAddress(string PostalName, string AddressLine1, string AddressLine2, string AddressLine3, string AddressLine4, string PostCode, string CountryCode, string TelephoneNo, string FaxNo, string EmailAddress) { try { SalesOrder.AmendDeliveryAddress(PostalName, AddressLine1, AddressLine2, AddressLine3, AddressLine4, PostCode); MessageBox.Show("Delivery address set"); } catch (Exception ex) { throw ex; } } }

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• What are the Hot and Cold observables?

  - by Sergey Aldoukhov

  I watched the video and I know the general principles - hot happens even when nobody is subscribed, cold happens "on demand". Also, Publish() converts cold to hot and Defer() converts hot to cold. But still, I feel I am missing the details. Here are some questions I'd like to have answered: Can you give a comprehensive definition for these terms? Does it ever make sense to call Publish on hot observable or Defer on cold? Is there differences between hot and cold definitions for IObservable and IEnumerable? What are the general principles you should take into account when programming for cold or hot? Any other tips on hot/cold observables?

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• Web service reference location?

  - by Damien Dennehy

  I have a Visual Studio 2008 solution that's currently consisting of three projects: A DataFactory project for Business Logic/Data Access. A Web project consisting of the actual user interface, pages, controls, etc. A Web.Core project consisting of utility classes, etc. The application requires consuming a web service. Normally I'd add the service reference to the Web project, but I'm not sure if this is best practice or not. The following options are open to me: Add the reference to the Web project. Add the reference to the Web.Core project, and create a wrapper method that Web will call to consume the web service. Add a new project called Web.Services, and copy step 2. This project is expected to increase in size so I'm open to any suggestions.

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• JavaScript Metaprogramming: Reduce boilerplate of adding functions to a function queue

  - by thurn

  I'm working with animation in JavaScript, and I have a bunch of functions you can call to add things to the animation queue. Basically, all of these functions look like this: function foo(arg1, arg2) { _eventQueue.push(function() { // actual logic } } I'm wondering now if it would be possible to cut down on this boilerplate a little bit, though, so I don't need that extra "_eventQueue" line in the function body dozens of times. Would it be possible, for example, to make a helper function which takes an arbitrary function as an argument and returns a new function which is augmented to be automatically added to the event queue? The only problem is that I need to find a way to maintain access to the function's original arguments in this process, which is... complicated.

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• Find what unknown function does in C using gdb

  - by Gary

  Hi, I have a function m(int i, char c) which takes and returns a char between "-abc...xyz" and also takes an integer i. Basically I have no way to see the source code of the function but can call it and get the return value. Using gdb/C, what's the best way to decipher what the function actually does? I've tried looking for patterns using consecutive chars and integer inputs but have come up with nothing yet. If it helps, here are some results of testing the return values, with the first two bits being the arguments and the last bit being the return value: 0 a i 0 b l 0 c t 0 d x 0 e f 0 f v 1 a q 1 b i 1 c y 1 d e 2 a a 2 b y 2 c f 2 d n

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• Javascript to pull formatted data

  - by Dusty Roberts

  Hi there I have a recruitment portal that people can use to advertise and search for jobs. I would like the recruiters to be able to add a small javascript snippet to their personal websites, that will list jobs on my site. how can i go about this? I have webservices set up so the javascript can just call that, but i also need the result to be formatted and placed inline. This should work in a simular way to google adsense. I would really appreciate a small example

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• Need help using the Windows IP Helper API & ParseNetworString in C#.

  - by JohnnyNoir

  I'm attempting to rewrite some C# web service code that uses the Windows IP Helper API call "SendARP" to retreive a remote system's MAC address. SendARP works great - until you cross a network segment as Arp requests aren't routed. I've been looking at the "ParseNetworkString" documentation after happening across its existance on StackOverflow. The quick & dirty algorithm I have in mind is: public static string GetMacAddress(string strHostOrIP) { if (strHostOrIP is IPAddress) { parse results of nbstat -A strHostOrIP return macAddress } if (strHostOrIP is Hostname) { IPHostEntry hostEntry = null; try { hostEntry = Dns.GetHostEntry(strHostOrIP); } catch { return null; } if (hostEntry.AddressList.Length == 0) { return null; } foreach (IPAddress ip in hostEntry.AddressList) { if (ip.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork) { ipAddress = ip; break; } } } return GetMACAddress(ipAddress); } "ParseNetworkString" is new with Vista/Win2008 so I haven't been able to find example C# code demonstrating its use and I'm no C++ coder so if anyone can point me in the right direction...

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• If Possible, How Can One Set Either a Background Color on Cells within a Sizer or Gridlines for the

  - by MetaHyperBolic

  I am flailing about with wxWidgets, in particular, the wx.Sizer in wxPython. I have read the documents, I have a copy of wXPython in Action before me, and have set aside the problem to work on other things a better mental model of sizers hopefully gestated within my skull. None of this has worked. I am not grokking, or even getting to the point where I can bang about usefully, how sizers work. In HTML, I could at least set a background color on some div or td, or call forth borders so I could see how things are laid out. Here, I have a grey expanse and no idea which of the nested static box sizers from which it originates. I am giving static box sizers after making a mess out of the grid bag sizers. Either alternative would let me at least get a handle on how these work.

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• subreport with image not display data in crystal report asp .net vs 2005

  - by user361014

  I currently have a crystal report that generating in Visual Studio 2005 which has a sub-report. I've linked the sub-report to dataset and dataset has one table call image and it contain column system.byte[]. main report link to another dataset . main report has parameters and sub report has only image field. but when run main report display data but sub report don't display. no error message. sub report dataset not pass data to report. anyone have any idea what might be causing the sub-reports to not work??

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• actionscript 3.0 garbage collection with casalib ?

  - by algro

  I would love to see an actual example how to use the casalib-garbage-collection. I used the destroy method like in the description: casa-lib description If I have a Loader in a Subclass, do I also have to use the CasaLibLoader? Do I have still to care about all Instances/Eventlisteners to do proper garbage collection? If yes, whats the advantage of casalib-garbage-collection? I assumed to call destroy on a Casalib-Sprite and then it would destroy all its subclasses and references, and therefore safe memory. It would be awesome to get an easy instruction. Thanks in advance

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• FreeLibrary vs implicit unloading DLL

  - by Adil

  I have implemented a DLL including DllMain() entry function:- BOOL APIENTRY DllMain( HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { case DLL_PROCESS_ATTACH: ... case DLL_THREAD_ATTACH: ... case DLL_THREAD_DETACH: ... case DLL_PROCESS_DETACH: ... } Unfortunately i made a mistake in DLL_PROCESS_DETACH case and accessing illegal memorey (access violation). I made a sample program which loads the library using LoadLibrary() function, uses the library function and finally call FreeLibrary() and return. When i executed this program, i didnt get any error message. But if i remove FreeLibrary(), in that case the DLL_PROCESS_DETACH case is executed implicitly and this time it gives error dialog box mentioning that there is access violation. Why calling FreeLibrary() suppress this error? OR internally it handles this exception? What is suggested way.

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• Proper way to format date from database using javascript/jquery

  - by Darcy

  Hi all, I am calling my database which contains a datetime datatype. The date looks like this: 2005-05-23 16:06:00.000 I would like to display this in a table when a user selects a certain item from a list. I call my controller action and return Json of all the times and put them in a table. The problem is the date is completely wrong. What is displayed is this: /Date(1255470180000)/ The date that is returned isn't even parsable (which I don't want to do anyway) so I can't even get the data if I wanted to. Any ideas?

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• MySql UDF using shared library won't load

  - by Jarrod

  I am attempting to create a mysql UDF which will match a fingerprint using Digital Persona's free linux SDK library. I have written a trivial UDF as a learning experience which worked fine. However, when I added a dependency to Digital Persona's shared object I can no longer get MySql to load my UDF. I added includes to DP's headers and compiled my UDF using: gcc -fPIC -Wall -I/usr/src/mysql-5.0.45-linux-i686-icc-glibc23/include -shared -o dp_udf.so dp_udf.cc I also tried adding the -static argument, but whenever I restart MySql, I get the error: Can't open shared library 'dp_udf.so' (errno: 0 /usr/local/mysql/lib/plugin/dp_udf.so: undefined symbol: MC_verifyFeaturesEx) MC_verifyFeaturesEx is a function defined "dpMatch.h" which I included, and is implemented in libdpfpapi.so which I have tried placing in the same location as my dp_udf.so and in /usr/lib. Am I doing something wrong with my call to gcc (my C++ skills are rusty) or does MySql not allow UDFs to use additional shared objects?

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• webview showing white bar on right side

  - by Funkyidol

  I am giving the following method call to my webview client embedded in my layout wv.loadData("<html><body bgcolor=\"Black\"></body></html>","text/html", "utf-8"); when i run this on the device, it shows a white vertical bar on the right side. I fixed the white thing by using webview.setBackgroundColor(Color.BLACK); but i want to remove it completely Following is my layout xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <WebView android:id="@+id/wv1" android:layout_height="fill_parent" android:layout_width="fill_parent" /> </LinearLayout> Any suggestions??

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• How to read the response stream before the Http response completes

  - by Marwan Aouida

  When making a request using HttpWebRequest object, I need to call the method GetResponse() to send the request and get the response back. The problem with this method is that it doesn't return the response object until all data has been received. Say I am downloading a 100 MB file, I won't be able to read it until the response finish and all the 100 MB is downloaded. What I want is to be able to read the response stream bytes as soon as they arrive, without waiting for the response to complete. I know I can use the Range Http header, but it won't work on my situation.

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• Drag and Drop to explorer causing invalid FORMATETC (DV_E_FORMATETC) error

  - by JustABill

  I'm trying to use this excellent example to implement dropping virtual files into Windows Explorer. However, I'm stymied by this error. Towards the bottom, inside void System.Runtime.InteropServices.ComTypes.IDataObject.GetData(ref System.Runtime.InteropServices.ComTypes.FORMATETC formatetc, out System.Runtime.InteropServices.ComTypes.STGMEDIUM medium) on the first call to ((System.Runtime.InteropServices.ComTypes.IDataObject)this).GetDataHere(ref formatetc, ref medium); I'm getting back a DV_E_FORMATETC error. As far as I can tell, all the elements of the FORMATETC struct that are being passed in are valid: cfFormat is "Shell IDList Array" (-16141), ptd is 0, dwAspect is DVASPECT_CONTENT, lindex is -1, and tymed is TYMED_HGLOBAL. I'm kind of confused how there'd be a problem anyway, since this was generated by explorer. I know very little about COM interaction, so any help would be greatly appreciated.

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• OutOfMemoryError calling XmlSerializer.Deserialize() - not related to XML size!

  - by Mike Atlas

  This is a really crazy bug. The following is throwing an OutOfMemoryException, for XML snippits that are very short (e.g., <ABC def='123'/>) of one type, but not for others of the same size but a different type: (e.g., <ZYX qpr='baz'/>). public static T DeserializeXmlNode<T>(XmlNode node) { try { return (T)new XmlSerializer(typeof(T)) .Deserialize(new XmlNodeReader(node)); } catch (Exception ex) { throw; // just for catching a breakpoint. } } I read in this MSDN article that if I were using XmlSerializer with additional parameters in the constructor, I'd end up generating un-cached serializer assemblies every it got called, causing an Assembly Leak. But I'm not using additional parameters in the constructor. It also happens on the first call, too, so the AppDomain is fresh. Worse yet, it is only thrown in release builds, not debug builds. What gives?

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