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• Rewriting VB.NET Lambda experession as a C# statement

  - by ChadD

  I downgraded my app from version 4 of the framework to version 4 and now I want to implement this VB.NET lambda function statement (which works on 3.5) Dim colLambda As ColumnItemValueAccessor = Function(rowItem As Object) General_ItemValueAccessor(rowItem, colName) and rewrite it in C#. This was my attempt: ColumnItemValueAccessor colLambda = (object rowItem) => General_ItemValueAccessor(rowItem, colName); When I did this, I get the following error: Error 14 One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll? C:\Source\DotNet\SqlSmoke\SqlSmoke\UserControls\ScriptUserControl.cs 84 73 SqlSmoke However, when I downgraded the app from version 4.0 of the framework to 3.5 (because our users only hae 3.5 and don't have rights to install 4.0). when I did this, the reference to "Microsoft.CSharp" was broken. Can I rewrite the VB.NET command in C# using syntax that is valid in C# 3.5 as I was able to in VB.NET? What would the syntax be?

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• How to document an XML Schema?

  - by lucas clemente

  I have developed a XML schema for an application I wrote. Now I want to document the valid structure for the end user, however I can't come up with any natural way to do this. I've seen things like xs3p, which essentially converts a xsd schema to a HTML representation, however that doesn't look like good documentation to me; the user shouldn't need to know anything about schemas to understand what he is allowed to do. Any ideas how to document this? Any programs / editors / graphical solutions or simply concepts I can build on?

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• What happens after a packet is captured?

  - by Rayne

  Hi all, I've been reading about what happens after packets are captured by NICs, and the more I read, the more I'm confused. Firstly, I've read that traditionally, after a packet is captured by the NIC, it gets copied to a block of memory in the kernel space, then to the user space for whatever application that then works on the packet data. Then I read about DMA, where the NIC directly copies the packet into memory, bypassing the CPU. So is the NIC - kernel memory - User space memory flow still valid? Also, do most NIC (e.g. Myricom) use DMA to improve packet capture rates? Secondly, does RSS (Receive Side Scaling) work similarly in both Windows and Linux systems? I can only find detailed explanations on how RSS works in MSDN articles, where they talk about how RSS (and MSI-X) works on Windows Server 2008. But the same concept of RSS and MSI-X should still apply for linux systems, right? Thank you. Regards, Rayne

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• How do I expose the columns collection of GridView control that is inside a user control

  - by Christopher Edwards

  See edit. I want to be able to do this in the aspx that consumes the user control. <uc:MyControl ID="MyGrid" runat="server"> <asp:BoundField DataField="FirstColumn" HeaderText="FirstColumn" /> <asp:BoundField DataField="SecondColumn" HeaderText="SecondColumn" /> </uc> I have this code (which doesn't work). Any ideas what I am doing wrong? VB Partial Public Class MyControl Inherits UserControl <System.Web.UI.IDReferenceProperty(GetType(DataControlFieldCollection))> _ Public Property Columns() As DataControlFieldCollection Get Return MyGridView.Columns End Get Set(ByVal value As DataControlFieldCollection) ' The Columns collection of the GridView is ReadOnly, so I rebuild it MyGridView.Columns.Clear() For Each c As DataControlField In value MyGridView.Columns.Add(c) Next End Set End Property ... End Class C# public partial class MyControl : UserControl {         [System.Web.UI.IDReferenceProperty(typeof(DataControlFieldCollection))]     public DataControlFieldCollection Columns {         get { return MyGridView.Columns; }         set {             MyGridView.Columns.Clear();             foreach (DataControlField c in value) {                 MyGridView.Columns.Add(c);             }         }     } ... } EDIT: Actually it does work, but auto complete does not work between the uc:MyControl opening and closing tags and I get compiler warnings:- Content is not allowed between the opening and closing tags for element 'MyControl'. Validation (XHTML 1.0 Transitional): Element 'columns' is not supported. Element 'BoundField' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing. So I guess I need to use some sort of directive to tell the complier to expect content between the tags. Any ideas?

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• Oracle SQL clause evaluation order

  - by jon.johnson

  In Oracle, which clause types get evaluated first? If I had the following ( pretend .... represent valid expressions and relation names ), what would the order of evaluation be? SELECT ... FROM ..... WHERE ........ GROUP BY ........... HAVING ............. ORDER BY ................ I am under the impression that the SELECT clause is evaluated last, but other than that I'm clueless.

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• Webrick transparent proxy

  - by zzeroo

  Hi there, I've a absolute simple proxy running. require 'webrick' require 'webrick/httpproxy' s = WEBrick::HTTPProxyServer.new(:Port => 8080, :RequestCallback => Proc.new{|req,res| puts req.request_line, req.raw_header}) # Shutdown functionality trap("INT"){s.shutdown} # run the beast s.start This should in my mind not influence the communication in any way. But some sites doesn't work any more. Specially http://lastfm.de 's embedded flash players doesn't work. The header looks link: - -> http://ext.last.fm/2.0/?api%5Fsig=aa3e9ac9edf46ceb9a673cb76e61fef4&flashresponse=true&y=1269686332&streaming=true&playlistURL=lastfm%3A%2F%2Fplaylist%2Ftrack%2F42620245&fod=true&sk=ee93ae4f438767bf0183d26478610732&lang=de&api%5Fkey=da6ae1e99462ee22e81ac91ed39b43a4&method=playlist%2Efetch GET http://play.last.fm/preview/118270350.mp3 HTTP/1.1 Host: play.last.fm User-Agent: Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.2) Gecko/20100308 Ubuntu/10.04 (lucid) Firefox/3.6 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: de,en-us;q=0.7,en;q=0.3 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Proxy-Connection: keep-alive Cookie: AnonWSSession=ee93ae4f438767bf0183d26478610732; AnonSession=cb8096e3b0d8ec9f4ffd6497a6d052d9-12bb36d49132e492bb309324d8a4100fc422b3be9c3add15ee90eae3190db5fc localhost - - [27/Mar/2010:11:38:52 CET] "GET http://www.lastfm.de/log/flashclient/minor/Track_Loading_Fail/Buffering_Timeout HTTP/1.1" 404 7593 - -> http://www.lastfm.de/log/flashclient/minor/Track_Loading_Fail/Buffering_Timeout localhost - - [27/Mar/2010:11:38:52 CET] "GET http://play.last.fm/preview/118270350.mp3 HTTP/1.1" 302 0 I nead some hints why or what the communication disturb.

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• .NET WebService Custom Attribute

  - by DownChapel

  I would like to add a custom attribute to a asmx web service to determine if the request is valid based on the client IP address. This is a similar idea to the AuthorizeAttribute in ASP.NET MVC. Is there anywhere (e.g. a HTTP module) I can put the code to look at the attribute on the webservice and decide whether to allow the request or not? In my web.config the handler for asmx is the ScriptHandlerFactory from the System.Web.Extensions dll. I have already implemented the functionality with a HTTP module and a config file with a list of allowed URLs, but I would prefer to get rid of the config file and just add an attribute to the webservice class. Thanks

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• Boost::Asio : io_service.run() vs poll() or how do I integrate boost::asio in mainloop

  - by user300713

  Hi, I am currently trying to use boost::asio for some simple tcp networking for the first time, and I allready came across something I am not really sure how to deal with. As far as I understand io_service.run() method is basically a loop which runs until there is nothing more left to do, which means it will run until I release my little server object. Since I allready got some sort of mainloop set up, I would rather like tp update the networking loop manually from there just for the sake of simplicity, and I think io_service.poll() would do what I want, sort of like this: void myApplication::update() { myIoService.poll(); //do other stuff } This seems to work, but I am still wondering if there is a drawback from this method since that does not seem to be the common way to deal with boost::asios io services. Is this a valid approach or should I rather use io_service.run() in a non blocking extra thread?

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• Execution of "mvn sonar:sonar" with no external access

  - by romaintaz

  Hello, I try to execute the mvn sonar:sonar command on a machine where Maven is configured to have no access to external repositories (in reality, this is not exactly the case, but it helps me to explain my problem). So currently, if I run this command, I get the following error: [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] The plugin 'org.codehaus.mojo:sonar-maven-plugin' does not exist or no valid version could be found I think it means that I have some incorrect metadata in my local repository, as I have a [local repo]\org\codehaus\mojo\sonar-maven-plugin\1.0-beta-1 directory (with the JAR inside, of course). Have you any idea why my command is failing? tech infos: Maven 2.2.1, Java 1.6, Sonar 2.1.2

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• Parsing complex string using regex

  - by wojtek_z

  My regex skills are not very good and recently a new data element has thrown my parser into a loop Take the following string "+USER=Bob Smith-GROUP=Admin+FUNCTION=Read/FUNCTION=Write" Previously I had the following for my regex : [+\\-/] Which would turn the result into USER=Bob Smith GROUP=Admin FUNCTION=Read FUNCTION=Write FUNCTION=Read But now I have values with dashes in them which is causing bad output New string looks like "+USER=Bob Smith-GROUP=Admin+FUNCTION=Read/FUNCTION=Write/FUNCTION=Read-Write" Which gives me the following result , and breaks the key = value structure. USER=Bob Smith GROUP=Admin FUNCTION=Read FUNCTION=Write FUNCTION=Read Write Can someone help me formulate a valid regex for handling this or point me to some key / value examples. Basically I need to be able to handle + - / signs in order to get combinations.

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• Using embedded standard HTML forms with ASP.NET

  - by RM

  I have a standard aspx page with which I need to add another standard HTML form into and have it submit to another location (external site), however whenever I press the submit button the page seems to do a post back rather than using the sub-forms action url. A mock up of what the form relationships is below. Note in the real deployment the form will be part of a content area of a master page layout, so the form needs to submit independantly from the master page form. <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <form id="subscribe_form" method="post" action="https://someothersite.com" name="em_subscribe_form" > <input type="text" id="field1" name="field1" /> <input id="submitsubform" type="submit" value="Submit" /> </form> </div> </form> </body> </html>

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• Zend RegEx Validator error message issue

  - by Mallika Iyer

  Hello, I'm validating a text field in my form as follows: $name = new Zend_Form_Element_Text('name'); $name->setLabel('First Name:') ->setRequired(true) ->addFilter(new Zend_Filter_StringTrim()) ->addValidator('regex',true,array('/^[(a-zA-Z0-9)]+$/')) ->addErrorMessage('Please enter a valid first name'); What I'm trying to accomplish is - how can i display a meaningful error message? Eg: If first name is 'XYZ-', how can i display '- is not allowed in first name.' Is there a way I can access what character the regex is failing for? Would you recommend something else altogether? I thought about writing a custom validator but the regex is pretty simple, so I don't see the point. I couldn't find a decent documentation for the zend 'regex' validator anywhere. If I don't override the default error message, I simple get something like : ';;;hhbhbhb' does not match against pattern '/^[(a-zA-Z0-9)]+$/' - which I obviously don't want to display to the user. I'd appreciate your inputs.

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• SNMP: ASN.1 MIB Definitions. Referencing a table within a table

  - by Doug

  Its's been a while since I've written ASN.1 so.. Our data model is comprised of several table definitions within a table. This is not workable in SNMP, so we need to flatten the definitions. The easiest way to do this would be to have the embedded table indexed by the same OID as the parent table. Thus someTableEntry ::= SEQUENCE { someTableIndex Integer32, someTableDomain Integer32, someTableFooTable SEQUENCE OF SomeTableFooTable } becomes someTableEntry ::= SEQUENCE { someTableIndex Integer32, someTableDomain Integer32, } someTableFooTable ::= SEQUENCE { someTableIndex Integer32, .... } The good thing is that in our application there will NEVER be any kind of SET, GET or GET NEXT so no need for SNMP walk (there are some very good reasons for this that supersede the need for network management elegance. All attributes will be reported via traps only. I think this is a valid SNMP MIB definitions but wanted to get some feedback. Thanks in advance.

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• parameterized doctype in xsl:stylesheet

  - by Flavius

  How could I inject a --stringparam (xsltproc) into the DOCTYPE of a XSL stylesheet? The --stringparam is specified from the command line. I have several books in docbook5 format I want to process with the same customization layer, each book having an unique identifier, here "demo", so I'm running something like xsltproc --stringparam course.name demo ... for each book. Obviously the parameter is not recognized as such, but as verbatim text, giving the error: warning: failed to load external entity "http://edu.yet-another-project.com/course/$(course.name)/entities.ent" Here it is how I've tried, which won't work: <?xml version='1.0'?> <!DOCTYPE stylesheet [ <!ENTITY % myent SYSTEM "http://edu.yet-another-project.com/course/$(course.name)/entities.ent"> %myent; ]> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <!-- the docbook template used --> <xsl:import href="http://docbook.org/ns/docbook/xhtml/chunk.xsl"/> <!-- processor parameters --> <xsl:param name="html.stylesheet">default.css</xsl:param> <xsl:param name="use.id.as.filename">1</xsl:param> <xsl:param name="chunker.output.encoding">UTF-8</xsl:param> <xsl:param name="chunker.output.indent">yes</xsl:param> <xsl:param name="navig.graphics">1</xsl:param> <xsl:param name="generate.revhistory.link">1</xsl:param> <xsl:param name="admon.graphics">1</xsl:param> <!-- here more stuff --> </xsl:stylesheet> Ideas?

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• How can I access an ASP.Net 2.0 web service using VB Script?

  - by Steve Hiner

  I'm trying to find a way to access a web service from a VB Script .vbs file running under wscript.exe. I pulled some sample code from Microsoft but it gives me an error. Dim SOAPClient, Response Set SOAPClient = createobject("MSSOAP.SOAPClient") SOAPClient.mssoapinit("https://www.domain.com/Folder/Service.asmx?WSDL") On that last line I get an error message: WSDLReader: No valid schema specification was found. This version of the SOAP Toolkit only supports 1999 and 2000 XSD schema specifications After getting that message I installed the SOAP 3.0 SDK to make sure I have the most recent version (since it's now deprecated for .Net) but I still get the same error. The reason it needs to be in VB Script is because it's going to be used in a program over which I have no control and it only supports VB Script. Is there a way to get VB Script to be able to parse a newer WSDL file? I do have the source code for the web service. Is there something I can change in the web service to make it schema compatible with the SOAP toolkit?

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• simpledateformat parsing date with 'Z' literal

  - by DanInDC

  I am trying to parse a date that looks like this: 2010-04-05T17:16:00Z This is a valid date per http://www.ietf.org/rfc/rfc3339.txt. The 'Z' literal "imply that UTC is the preferred reference point for the specified time." If I try to parse it using SimpleDateFormat and this pattern: yyyy-MM-dd'T'HH:mm:ss It will be parsed as a Mon Apr 05 17:16:00 EDT 2010 SimpleDateFormat is unable to parse the string with these patterns: yyyy-MM-dd'T'HH:mm:ssz yyyy-MM-dd'T'HH:mm:ssZ I can explicitly set the TimeZone to use on the SimpleDateFormat to get the expected output, but I don't think that should be necessary. Is there something I am missing? Is there an alternative date parser?

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• How would you go about tackling this problem?

  - by incrediman

  I have a programming contest coming up in about half a week, and I've been prepping :) I found a bunch of questions from this canadian competition, they're great practice: http://cemc.math.uwaterloo.ca/contests/computing/2009/stage2/day1.pdf I'm looking at problem B ("Dinner"). Any idea where to start? I can't really think of anything besides the naive approach (ie. trying all permutations) which would take too long to be a valid answer. Btw, the language there says c++ and pascal I think, but i don't care what language you use - I mean really all I want is a brief description of how to tackle the problem. Like "use X technique treating each programmer as a Y" or something :)

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• StringTokenizer problem of tokenizing

  - by Mr CooL

  String a ="the STRING TOKENIZER CLASS ALLOWS an APPLICATION to BREAK a STRING into TOKENS.  "; StringTokenizer st = new StringTokenizer(a); while (st.hasMoreTokens()){ System.out.println(st.nextToken()); Given above codes, the output is following, the STRING TOKENIZER CLASS ALLOWS an APPLICATION to BREAK a STRING into TOKENS.  My only question is why the "STRING TOKENIZER CLASS" has been combined into one token???????? When I try to run this code, System.out.println("STRING TOKENIZER CLASS".contains(" ")); It printed funny result, FALSE It sound not logical right? I've no idea what went wrong. I found out the reason, the space was not recognized as valid space by Java somehow. But, I don't know how it turned up to be like that from the front processing up to the code that I've posted.

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• How to combine mvc2 client side validation with other client side validation?

  - by Andrey

  I have a page using mvc2 with client side validation. The client side validation is provided by Microsoft Ajax mvc validation script. This does very well to validate all fields that are related to the model. I also have fields that are never sent to the server such as the confirm password value, and the accept agreement. For these fields i need pure client side validation. I created the javascript to do this, but am now having a hard time integrating the two validatiosn together. I was hoping that i could do something like add another error to an array, or set the page manually to not valid to make sure that the user cannot submit. Basically follow the same approach that i would with normal asp.net validation. I can't find anything like that. In all examples validators are discussed that are connected to parts of the model. What is my best approach here?

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• Exclude css & image resources in web.xml Security Constraint

  - by Tiggles

  I am using JSF2.1 and Glassfish 3.1.2. I specify a security constraint to block everything: <security-constraint> <web-resource-collection> <web-resource-name>Secured Content</web-resource-name> <!-- Block all --> <url-pattern>/*</url-pattern> </web-resource-collection> <!-- only users with at least one of these roles are allowed to access the secured content --> <auth-constraint> <role-name>ADMINISTRATOR</role-name> </auth-constraint> </security-constraint> and have another to allow access a subset of pages and the resources: <security-constraint> <web-resource-collection> <web-resource-name>Open Content</web-resource-name> <!-- Allow subscribe --> <url-pattern>/subscribe/*</url-pattern> <url-pattern>/javax.faces.resource/*</url-pattern> </web-resource-collection> <!-- No Auth Contraint! --> </security-constraint> This works fine. However, is the following <url-pattern>/javax.faces.resource/*</url-pattern> the correct way to allow all resources? I only did this by looking at the url that Facelets injects into the xhtml. Is there security holes with this approach? Thanks.

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• Output Path property issue on build server

  - by Jay Clarke

  I am working in the .NET 3.5 framework. I have a project that builds fine locally. I can build it on our build server when the source files are posted there. However when I am running the build process through Visual Studio 2010 I get a warning that says "C:\WINDOWS\Microsoft.NET\Framework64\v3.5\Microsoft.Common.targets: The OutputPath property is not set for this project. Please check to make sure that you have specified a valid Configuration/Platform combination. Configuration='DEV' Platform='Any CPU'" Any suggestions anyone has or if you need additional information please let me know. I have been struggling with this for a couple of days now. Thanks in advance for your help. Jay Clarke

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• Masked Edit Extender Format Issue

  - by Kumar

  I am using an ASP.NET AJAX Masked Edit Extender to format phone numbers <asp:TextBox ID="tbPhoneNumber" runat="server" /> <ajaxToolkit:MaskedEditExtender TargetControlID="tbPhoneNumber" Mask="(999)999-9999" MaskType="Number" InputDirection="LeftToRight" ClearMaskOnLostFocus="false" ClearTextOnInvalid="false" runat="server" AutoComplete="false" /> On the page load event I am trying to populate the phone textbox as follows: protected void Page_Load(object sender, EventArgs e) { tbPhoneNumber.Text = "(394)456-310"; } So there is one number which is missing at the end to make it a valid phone number. When the page loads I expected the value in the textbox to be (394)456-310_ But it displays (_39)445-6310 Why is this happening?

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• multiple polls with email submit function

  - by Chris Mousdale

  I want to add a 4 sets of polls that each have around 4 radio buttons each for answers - then i would like to add an 'enter your email address' field below these polls. Finally I would like the submit button after the email field to 'submit' the data from the polls and the email address entered - so only one submit button. Just to make things even better, I would like some form of validation, that will not pass the form unless all 4 polls have a radio button pressed and a valid email. All this is then to go into a MySQL database. I have the email validation bit nailed - so thats fine.. it's the multiple polls bit thats getting me - I cannot get it to work?! Do i have to effectively add 5 forms? Any help would be greatly appreciated.

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• What is the String 'volumeName' argument of MediaStore.Audio.Playlists.Members.getContentUri referri

  - by Brett

  I am wanting to query the members of a given playlist. I have the correct playlist id, and want to use a managedQuery() to look at the playlist members in question. What I have is this: private String [] columns = { MediaStore.Audio.Playlists.Members.PLAYLIST_ID, MediaStore.Audio.Playlists.Members.TITLE, }; Uri membersUri = MediaStore.Audio.Playlists.Members.getContentUri(volume, playlistId); Cursor tCursor = managedQuery(membersUri, columns, null, null, null); I don't know what the volume argument needs to be. I've tried this: MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI.toString() for the "volume" argument. That gives me back a valid content URI that looks like: content://media/external/audio/playlists/2/members However, my cursor comes back null. I probably am way off base -- I know what I want to do is very simple.

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• Can I decrypt an encrypted file even if someone modified it?

  - by kiruthika

  Warning: This question has been heavily edited. I tried my best to guess the original author's intentions. Please view the original version. I'm unsure on how to use the GPG command line tool, that we're using to encrypt files. File.txt is a simple text file: Testing hello world My security things. This is how I encrypt the file: gpg --symmetric File.txt This gives me a new, encrypted file: File.txt.gpg If someone else now modifies the encrypted file, I'm no longer able to decrypt it. $ gpg --decrypt File.txt.gpg gpg: no valid OpenPGP data found. gpg: decrypt_message failed: eof How can I get the content of my file, even though someone has modified it?

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