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  • Overrided ToString doesn't show in debug

    - by marco.ragogna
    I have a collection similar to: Public Class MyCollection Inherits ObservableCollection(Of MyCollection) Private _Name As String Public Property Name() As String Get Return _Name End Get Set(ByVal value As String) _Name = value End Set End Property Public Overrides Function ToString() As String Return "Name: " & _Name End Function End Class I have overrided ToString method in order to help in debug, but it doesn't show up. In the code that follow if, during debug, I move the mouse over coll it shows me Count = 0 Private Sub Window1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded Dim coll As New MyCollection coll.Name = "Test" End Sub Do you know what could be the problem?

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  • What is a good way to quantify C++ knowledge and skill?

    - by LoudNPossiblyRight
    I have only recently started to study (with the hopes of mastering) C++, one because i have started to love it and two because it's a good career/profession move. At the same time i wish to quantify my knowledge and skill so as to set my self apart from those who just throw C/C++ on their resumes and fish. Is there an open, industry and community recognized way of quantifying ones knowledge and skill in C++? I have looked at Brainbench, MS C++ certificates, and other online certification sites which offer to rate you at $50-$200 per test however there doesn't seem to be a standard on how to rate knowledge and skill. It's one thing for MS or Oracle/Sun to have certifications for their products but C++ is a standard, shouldn't there be a standard way or rating one's knowledge and skill there in? Thanks.

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  • Retrieve a static variable using its name dynamically using reflection

    - by user2538438
    How to retrieve a static variable using its name dynamically using Java reflection? If I have class containing some variables: public class myClass { string [][] cfg1= {{"01"},{"02"},{"81"},{"82"}}; string [][]cfg2= {{"c01"},{"c02"},{"c81"},{"c82"}}; string [][] cfg3= {{"d01"},{"d02"},{"d81"}{"d82"}}; int cfg11 = 5; int cfg22 = 10; int cfg33 = 15; } And in another class I want variable name is input from user: class test { Scanner in = new Scanner(System.in); String userInput = in.nextLine(); // get variable from class myClass that has the same name as userInput System.out.println("variable name " + // correct variable from class) } Using reflection. Any help please?

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  • while loop / string input not working java

    - by Mikeecb
    I have looked online and all of the tutorials / questions have pointed me to this. I can't see why this isn't working. Any help would be much appreciated. Thanks import java.util.*; public class test { static Scanner userInput = new Scanner(System.in); public static void main(String[] args) { String textEntered = userInput.next(); if (textEntered == "hello") { System.out.println("Hello to you too!"); } } } I enter "hello" but nothing is printed. Also I have tried next() and nextLine();

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  • How do I get IE to open a file with its associated application?

    - by Wayne
    MSTest produces an XML file with a .trx extension containing test results. If I have a .trx file on a machine without Visual Studio installed, I get prompted to "Use the Web Service..." or "Select from a list...", which is expected. If I have a .trx file on my development machine and I open it, it opens in Visual Studio, which is expected. If I click a link on a web page or in an email which gets a .trx file from my build server, it ALWAYS opens the XML in IE. How do I configure IE (or IIS on the build server) to open the remote .trx file in Visual Studio, if it's installed, or prompt if it's not? UPDATE: If I rename the .trx file on the server and give it various extensions (eg. .bmp, .msi, .txt, .zip), it still opens as XML in IE, so it's clearly going by the content of the file and not the declared MIME type.

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  • Why is an anonymous inner class containing nothing generated from this code?

    - by Andrew Westberg
    When run through javac on the cmd line Sun JVM 1.6.0_20, this code produces 6 .class files OuterClass.class OuterClass$1.class OuterClass$InnerClass.class OuterClass$InnerClass2.class OuterClass$InnerClass$InnerInnerClass.class OuterClass$PrivateInnerClass.class When run through JDT in eclipse, it produces only 5 classes. OuterClass.class OuterClass$1.class OuterClass$InnerClass.class OuterClass$InnerClass2.class OuterClass$InnerClass$InnerInnerClass.class OuterClass$PrivateInnerClass.class When decompiled, OuterClass$1.class contains nothing. Where is this extra class coming from and why is it created? package com.test; public class OuterClass { public class InnerClass { public class InnerInnerClass { } } public class InnerClass2 { } //this class should not exist in OuterClass after dummifying private class PrivateInnerClass { private String getString() { return "hello PrivateInnerClass"; } } public String getStringFromPrivateInner() { return new PrivateInnerClass().getString(); } }

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  • Custom constructors for models in Google App Engine (python)

    - by Nikhil Chelliah
    I'm getting back to programming for Google App Engine and I've found, in old, unused code, instances in which I wrote constructors for models. It seems like a good idea, but there's no mention of it online and I can't test to see if it works. Here's a contrived example, with no error-checking, etc.: class Dog(db.Model): name = db.StringProperty(required=True) breeds = db.StringListProperty() age = db.IntegerProperty(default=0) def __init__(self, name, breed_list, **kwargs): db.Model.__init__(**kwargs) self.name = name self.breeds = breed_list.split() rufus = Dog('Rufus', 'spaniel terrier labrador') rufus.put() The **kwargs are passed on to the Model constructor in case the model is constructed with a specified parent or key_name, or in case other properties (like age) are specified. This constructor differs from the default in that it requires that a name and breed_list be specified (although it can't ensure that they're strings), and it parses breed_list in a way that the default constructor could not. Is this a legitimate form of instantiation, or should I just use functions or static/class methods? And if it works, why aren't custom constructors used more often?

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  • Flexibility starting to develop applications and DB

    - by kristaps
    Hi! First of all I want to say some info for admins. This post can help to all DBA and developers. Hope You don't close this. I'm writing about widespread problem I'm writing master work and I want that You will had little time to answer my questions in my form. These questions are about db structures. Visit here: http://spreadsheets.google.com/embeddedform?formkey=dEhmOWFGb2twWVFreWJwWXp2U3c5a1E6MQ After I summarized results, I insert it in new post and developers can choose which structure to use to reach needed requirements developing new applications. I think that my test will help a lot of people. Best regards, Kristaps

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  • Measure CPU performance via JS

    - by Nicholas Kyriakides
    A webapp has as a central component a relatively heavy algorithm that handles geometric operations. There are 2 solutions to make the whole thing accessible from both high-end machines and relatively slower mobile devices. I will use RPC's if i detect that the user machine is ''slow'' or else if i detect that the user machine can handle it OK, then i provide to the webapp the script to handle it client side. Now what would be a reliable way to detect the speed of the user machine? I was thinking of providing a sample script as a test when the page loads and detect the time it took to execute that. Any ideas?

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  • Android: Is decreasing size of .png files have some effect to resulted Bitmap in memory

    - by nahab
    I'm writing game with a large amount of .png pictures. All worked fine. Than I added new activity with WebView and got memory shortage. After that I made some experiment - replace game .png images with ones that just fully filled with some color. As result memory shortage had gone. But I suppose that Bitmap internally hold each pixel separately so such changes should have no effect. Maybe this because of initial images have alpha channel and my test images have not it? But actually question is: Will decreasing .png images files sizes make some effect on decreasing usage of VM application heap or not?

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  • Trouble with arraylist and stack

    - by helloman
    I am having trouble starting out this program, I am suppose to write a program that will create an ArrayList, asking the user for 10 numbers. Then this will be put into the Array. Then after the list is made navigate it and if a number is even remove it from the ArrayList and copy it to a stack of integers. import java.io.* ; import java.util.*; public class Test { public static void main(String[] args){ Scanner input = new Scanner (System.in); ArrayList<Integer> integers = new ArrayList<Integer>(); System.out.print ("Enter Number: \n"); for (int i = 0; i < 10; i++){ integers.add(input.nextInt()); } for (int i = 0; i < 10 ; i++){ if (i %2==0) } } }

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  • HowTo parse numbers from string with BOOST methods?

    - by mosg
    Problem: Visual C++ 10 project (using MFC and Boost libraries). In one of my methods I'm reading simple test.txt file. Here is what inside of the file (std::string): 12 asdf789, 54,19 1000 nsfewer:22!13 Then I'm reading it and I have to convert all digits to int only with boost methods. For example, I have a list of different characters which I have to parse: ( ’ ' ) ( [ ], ( ), { }, ? ? ) ( : ) ( , ) ( ! ) ( . ) ( - ) ( ? ) ( ‘ ’, “ ”, « » ) ( ; ) ( / ) And after conversation I must have some kind of a massive of int's values, like this one: 12,789,54,19,1000,22,13 Maybe some one already did this job? PS. I'm new for boost. Thanks!

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  • EntityDataSource Unable to configure to Entity Model

    - by photo_tom
    I'm doing my first test asp.net3.5 app using EntityDataSource. I've got the basic project built and the Entity model created and compiled. Database is a local sqlexpress one in app_data directory. When I put the <asp:EntityDataSource /> control on the page and try to configure it, I'm getting the message "The list of named connections could not be loaded because the configuration could not be opened". At this point, everything in the project is "auto-created" by Visual Studio 2008sp1. I confused as I cannot find any information on how to correct from this message.

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  • write image file larger than 4096

    - by ntan
    Hi, *************EDIT********** i am using ODBC and found that can not read more than 4096 for a field Any suggestions *************EDIT************ i am reading an image from db $image=$row["image-contents"]; Now try to write the file to disk $image_name="test.jpg"; $file = fopen( "images/".$image_name, "w" ); fwrite( $file, $image); fclose( $file ); The problem is that the file created is only 4096 bytes and the image file is corrupt because $image is larger than 4096. I now that fwrite use blocks for write but i dont know how do it. Help plz!

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  • Cannot load PNG in C# on Mac OSX running Mono

    - by milkplus
    In C#, I'm trying to load a png file on Mac OSX using the latest Mono using System.Drawing; Bitmap bmp = new Bitmap("test.png"); I get the following error Either the image format is unknown or you don't have the required libraries to decode this format [GDI+ status: UnknownImageFormat] It doesn't happen with all png files; just this one. Resaving in photo shop doesn't fix it unless I switch to 8bpp. Is there something I need to install to support this "special" png file? Works fine on windows.

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  • What techniques are available for filtering collections of objects when using zodb?

    - by Omega
    As the title says: What techniques are available for filtering objects when using zodb? The equivalent in SQL terms would be something like filtering results by a date range. Or only returning rows with a particular value set in a column. If I had a series of blog posts and only wanted ones done in the past month, what would I have to do? Is there any way to optimize these kinds of "queries"? My gut tells me iterating over all the objects in a relationship simply to perform a test is less than optimal.

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  • Dynamic order by without using dynamic sql ?

    - by Rohit
    I have the following stored procedure which can be sorted ascending and descending on TemplateName,CreatedOn and UploadedBy. The following SP when runs doesnot sort records.if i replace 2,3,4 by columnname, i got an error message "Conversion failed when converting the nvarchar value 'Test Template' to data type int.".Please suggest how to achieve sorting. CREATE PROCEDURE [dbo].[usp_SEL_GetRenderingTemplate] ( @facilityID INT, @sortOrder VARCHAR(5), @sortExpression VARCHAR(100), @errorCode INT OUTPUT ) AS BEGIN SET NOCOUNT ON ; BEGIN TRY SET @sortOrder = CASE @sortOrder WHEN 'Ascending' THEN 'ASC' WHEN 'Descending' THEN 'DESC' ELSE 'ASC' END SELECT TemplateID, TemplateName, CreatedOn, ( [user].LastName + ' ' + [user].FirstName ) AS UploadedBy FROM Templates INNER JOIN [user] ON [user].UserID = Templates.CreatedBy WHERE facilityid = @facilityID ORDER BY CASE WHEN @sortExpression = 'TemplateName' AND @sortOrder = 'ASC' THEN 2 WHEN @sortExpression = 'CreatedOn' AND @sortOrder = 'ASC' THEN 3 WHEN @sortExpression = 'UploadedBy' AND @sortOrder = 'ASC' THEN 4 END ASC, CASE WHEN @sortExpression = 'TemplateName' AND @sortOrder = 'DESC' THEN 2 WHEN @sortExpression = 'CreatedOn' AND @sortOrder = 'DESC' THEN 3 WHEN @sortExpression = 'UploadedBy' AND @sortOrder = 'DESC' THEN 4 END DESC SET @errorCode = 0 END TRY BEGIN CATCH SET @errorCode = -1 DECLARE @errorMsg AS VARCHAR(MAX) DECLARE @utcDate AS DATETIME SET @errorMsg = CAST(ERROR_MESSAGE() AS VARCHAR(MAX)) SET @utcDate = CAST(GETUTCDATE() AS DATETIME) EXEC usp_INS_LogException 'usp_SEL_GetFacilityWorkTypeList', @errorMsg, @utcDate END CATCH END

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  • ASP NET forms Authorization: how to reduce duration?

    - by eddo
    I've got a web page which is implementing cookie based ASPNET Forms Authentication. Once the user has logged in the page, he can edit some information using a form which is created using a partialview and returned to him as a dialog for editing. The action linked to the partial view is decorated as follows: [HttpGet] [OutputCache(Duration = 0, VaryByParam = "None")] [Authorize(Roles = "test")] public ActionResult changeTripInfo(int tripID, bool ovride=false) { ... } The problem i am experiencing is the latency between the request and the time when the dialog is shown to the user: time ranges between 800 and 1100 ms which is not justified by the complexity of the form. Investigating with Glimpse turns out that the time to process the AuthorizeAttribute (see snip) sums up to at least 650 ms which is troubling me. Looking at the Sql server log, the call which checks the user roles takes, as expected, virtually nothing (duration 0). How can I reduce this time? Am I missing some optimization?

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  • make mongrel_rails (localhost:3000) visible to a virtual machine

    - by Max Williams
    I develop rails in ubuntu and i just set up a virtualbox windows xp virtual machine for IE testing. I'd like to be able to run mongrel_rails in ubuntu and then jump into the vm to check it out, so i can jump back, make a change, jump into the vm again, reload the page and test it, etc. Is this possible? In this sort of situation in the past i've had to set up an apache server on my dev machine and run mongrel under that, in order to get an externally visible (ie visible to my local network) ip address that i then paste into the address bar of IE in the vm. Is this really necessary? Is there a simpler way? Can i do something with my /etc/hosts or sites-available files to just make up some arbitrary network address which points to localhost:3000 in ubuntu? Or something? thanks, max

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  • Is MD5 really that bad?

    - by Col. Shrapnel
    Everyone says that MD5 is "broken". Though I have never seen a code that can show it's weakness. So, I hope someone of local experts can prove it with simple test. I have an MD5 hash c1e877411f5cb44d10ece283a37e1668 And a simple code to produce it $salt="#bh35^&Res%"; $pass="***"; echo $hash=md5($salt.$pass); So, the question is: 1. Is MD% really that bad? 2. If so, what's the pass behind the asterisks?

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  • Precision problems of real numbers in Fortran

    - by saladoil
    I've been trying to use Fortran for my research project, with the GNU Fortran compiler (gfortran), latest version, but I've been encountering some problems in the way it processes real numbers. If you have for example the code: program test implicit none real :: y = 23.234, z z = y * 100000 write(*,*) y, z end program You'll get as output: 23.23999 2323400.0. I find this really strange. Can someone tell me what's exactly happening here? Looking at z I can see that y does retain its precision, so for calculations that shouldn't be a problem I suppose. But why is the output of y not exactly the same as the value that I've specified, and what can I do to make it exactly the same?

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  • Check if XML node is empty

    - by Vinit
    I have a simple XML structure like <main> <node1><!-- comments --><!-- comments --></node1> </main> and this can have any number of sub-nodes or values like: <main> <node1><!-- comments --><!-- comments --><p>texttext text</p> more text <br/></node1> </main> I want to check if the node is empty or not: I'm doing something like: <xsl:if test="string-length(main/node1//text())&gt;0"> But it does not work as if there are multiple tags, then string-length function will break coz of multiple arguments. Any help to solve this issue is really appreciated.

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  • Ruby On Rails : db:migrate do not run

    - by user332219
    Hi, When i run this command i have an error : rake db:migrate --trace rake aborted! NoMethodError: undefined method `ord' for 0:Fixnum: SET NAMES 'utf8' see the log file here : http://patxi.mayol.free.fr/public/trace.txt my database.yml file is here : MySQL. Versions 4.1 and 5.0 are recommended. # development: adapter: mysql encoding: utf8 reconnect: false database: annuaire_development pool: 5 username: root password: host: 127.0.0.1 test: adapter: mysql encoding: utf8 reconnect: false database: annuaire_test pool: 5 username: root password: host: 127.0.0.1 production: adapter: mysql encoding: utf8 reconnect: false database: annuaire_production pool: 5 username: root password: host: 127.0.0.1 Thanks My config : WampServer 2.0 with MySQL 5.0.51a Aptana 2.0.4 Ruby 1.8.5 Gems: actionmailer (2.3.4, 2.3.2) actionpack (2.3.4, 2.3.2) activerecord (2.3.4, 2.3.2) activeresource (2.3.4, 2.3.2) activesupport (2.3.4, 2.3.2) cgi_multipart_eof_fix (2.5.0) fastthread (1.0.1) gem_plugin (0.2.3) linecache (0.43) mongrel (1.1.5) mysql (2.8.1, 2.7.3) rack (1.0.0) rails (2.3.4, 2.3.2) rake (0.8.7) ruby-debug-base (0.10.3) ruby-debug-ide (0.4.5) sqlite3-ruby (1.2.1)

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  • How do I post dynamic information to Facebook from Flash?

    - by daidai
    I am building a Flash site and I want to be able to allow the user to post dynamically produced information to their Facebook wall, but I can't find out any information within the Facebook developers documentation. Its simple enough in Javascript/HTML: <script type="text/javascript"> function callPublish(msg, attachment, action_link) { FB.ensureInit(function () { FB.Connect.streamPublish('', attachment, action_link); }); } </script> <input type="button" onclick="callPublish('',{'name':'Post this to Facebook','href':'http://dev2.com','description':'this is some body test'},null);return false;" value="Preview Dialog" /> As you can see I don't want to create sessions or login or anything complicated, just post to info to their wall.

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  • how to write floating value accurately to a bin file.

    - by user319873
    Hi I am trying to dump the floating point values from my program to a bin file. Since I can't use any stdlib function, I am thinking of writting it char by char to a big char array which I am dumping in my test application to a file. It's like float a=3132.000001; I will be dumping this to a char array in 4 bytes. Code example would be:- if((a < 1.0) && (a > 1.0) || (a > -1.0 && a < 0.0)) a = a*1000000 // 6 bit fraction part. Can you please help me writting this in a better way.

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