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  • What should I call a class that contains a sequence of states

    - by Robert P
    I have a GUI tool that manages state sequences. One component is a class that contains a set of states, your typical DFA state machine. For now, I'll call this a StateSet. However, I have another class that has a collection (possibly partially unordered) of those state sets, and lists them in a particular order. and I'm trying to come up with a good name for it - not just for internal code, but for customers to refer to it. I've got: Sequence (maybe) StateSetSet (reasonable for code, but not for customers) Any other suggestions or ideas?

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  • PHP edit unique row in table

    - by Robert
    I currently have a PHP form that uses AJAX to connect to MySQL and display records matching a user's selection (http://stackoverflow.com/questions/2593317/ajax-display-mysql-data-with-value-from-multiple-select-boxes) As well as displaying the data, I also place an 'Edit' button next to each result which displays a form where the data can be edited. My problem is editing unique records since currently I only use the selected values for 'name' and 'age' to find the record. If two (or more) records share the same name and age, I am only able to edit the first result.

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  • how to refresh list of photos after uploadify jquery

    - by robert
    hello, I want to do a sort of photo editor, i use uploadify to upload images here are my files: http://www.mediafire.com/?nddjyzyygj5 the problem is: after upload the images i dinamicaly generate a thumb .. When I click on it it show me the large pictures in another page, i want to show the picture in a div or a paragraf! after I refresh the page is working! why? from my php script i recive only the image name (response) after UploadifyComplete i append this: jQuery("#" + jQuery(this).attr('id') + ID).html('<a href="uploads/' + response + '"><img width="60px" height="60px" src="uploads/' + response + '" alt="' + response + '" /></a>'); to this: jQuery(queue).append('<li class="uploadifyQueueItem">\ <span class="fileName">' + fileName + ' (' + byteSize + suffix + ')</span>\ <div class="uploadifyProgress">\ <div id="' + jQuery(this).attr('id') + ID + 'ProgressBar" class="uploadifyProgressBar"><!--Progress Bar--></div>\ </div>\ </li>'); } and the result will be: <div class="uploadifyQueue"> <ul id="mainftpQueue"> <li class="uploadifyQueueItem"> <a href="uploads/Winter.jpg"><img height="60px" width="60px" alt="Winter.jpg" src="uploads/Winter.jpg"></a> </li> </ul> </div> i putt all the images in 1 php array after all images uploaded i want to refresh the div where this code is: <div class="uploadifyQueue"> <?php if ($_SESSION['files']){ print '<ul id="mainftpQueue">'."\n"; foreach($_SESSION['files'] as $image ): print '<li class="uploadifyQueueItem">'."\n"; print '<a href="uploads/'.$image.'"><img height="60px" width="60px" alt="'.$image.'" src="uploads/'.$image.'"></a>'."\n"; print "</li>\n"; endforeach; print "</ul>\n"; } ?> </div> i try with: $('#mainftpQueue').load(location.href+" #mainftpQueue>*",""); $('#mainftpQueue').load("/ #mainftpQueue li"); buth no succes sorry 4 my bad english.. if any 1 can edit this thanks

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  • Find if id of a link equals id of parent container

    - by Robert Lawson
    Hi guys needing a bit of help. I am creating a one page personal site. Each section has a menu in it to jump to another section, however i want to have a class added to menu for the current section: i.e. if you are in about the about link would have a class 'current'. This is how it looks. <section id="about"> <nav> <li><a href="#" id ="about">About</a></li> <li><a href="#" id ="contact">About</a></li> <li><a href="#" id ="blog">About</a></li> </nav> New to jquery so i am struggling to find out how to do this. Any help will be greatly appreciated. Thanks

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  • Programmatically controlled virtual drive

    - by Robert Lin
    How would I go about creating a virtual drive with which I can programmatically and dynamically change the contents? For instance, program A starts running and creates a virtual drive. When program B looks in the drive, it sees an error log and starts reading/processing it. In the middle of all this program A gets a signal from somewhere and decides to add to the log. I want program B to be unaware of the change and just keep on going. Program B should continue reading as if nothing happened. Program A would just report a rediculously large file size for the log and then fill it in as appropriate. Program A would fill the log with tags if program B tries to read past the last entry. I know this is a weird request but there's really no other way to do this... I basically can't rewrite program B so I need to fool it. How do I do this in windows? How about OSX?

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  • Custom validation summary

    - by Robert Morgan
    I'm using the UpdateModel method for validation. How do I specify the text for the error messages as they appear in the validation summary? Sorry, I wasn't entirely clear. When I call UpdateModel(), if there is parsing error, for example if a string value is specified for a double field, a "SomeProperty is invalid" error message is automatically added to the ModelState. How do I specify the text for said automatically generated error message? If I implement IDataErrorInfo as suggested, it's error message property gets called for every column, regardless of whether the default binder deems it valid or not. I'd have to reimplement the parse error catching functionality that I get for free with the default binder. Incidentally, the default "SomeProperty is invalid" error messages seem to have mysteriously dissappeared in the RC. A validation summary appears and the relevant fields are highlighted but the text is missing! Any idea why this is? Thanks again and I hope all this waffle makes sense!

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  • PowerShell PSCX Read-Archive: Cannot bind parameter... problem

    - by Robert
    I'm running across a problem I can't seem to wrap my head around using the Read-Archive cmdlet available via PowerShell Community Extensions (v2.0.3782.38614). Here is a cut down sample used to exhibit the problem I'm running into: $mainPath = "p:\temp" $dest = Join-Path $mainPath "ps\CenCodes.zip" Read-Archive -Path $dest -Format zip Running the above produces the following error: Read-Archive : Cannot bind parameter 'Path'. Cannot convert the "p:\temp\ps\CenCodes.zip" value of type "System.String" to type "Pscx.IO.PscxPathInfo". At line:3 char:19 + Read-Archive -Path <<<< $dest -Format zip + CategoryInfo : InvalidArgument: (:) [Read-Archive], ParameterBindingException + FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Pscx.Commands.IO.Compression.ReadArchiveCommand If I do not use Join-Path to build the path passed to Read-Archive it works, as in this example: $mainPath = "p:\temp" $path = $mainPath + "\ps\CenCodes.zip" Read-Archive -Path $path -Format zip Output from above: ZIP Folder: CenCodes.zip#\ Index LastWriteTime Size Ratio Name ----- ------------- ---- ----- ---- 0 6/17/2010 2:03 AM 3009106 24.53 % CenCodes.xls Even more confusing is if I compare the two variables passed as the Path argument in the two Read-Archive samples above, they seem identical: This... Write-Host "dest=$dest" Write-Host "path=$path" Write-Host ("path -eq dest is " + ($dest -eq $path).ToString()) Outputs... dest=p:\temp\ps\CenCodes.zip path=p:\temp\ps\CenCodes.zip path -eq dest is True Anyone have any ideas as to why the first sample gripes but the second one works fine?

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  • How to use client side code in Visual studio ASP.NET

    - by Robert
    I am a quite new to web development and I am trying to do some small form updates without causing a postback. For example making a control visible when a drop down list is changed. I have so far come across some features that achieve this like the RequiredFieldValidator inside an update panels. However, these are specific to a single task. What are my options to achieve these client side updates in Visual Studio? At the moment I don't know any JavaScript, so I would prefer another solution if it exists.

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  • "How to: Multiple jQuery Image Swap Galleries on the Same Page?" / ASAP

    - by Robert
    I have multiple image galleries that use the following code (simply view the demo at the following link). http://www.sohtanaka.com/web-design/fancy-thumbnail-hover-effect-w-jquery/ However, when one clicks on the thumbnails of one gallery to change the large image preview - all the galleries change automatically to that large preview as well. In short, the question is: "How do I seperate each gallery from each other so when the user clicks on the thumbnails of one specific gallery the large image preview of that gallery changes and not any other?"

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  • How to add a Page to Frame using code in WPF

    - by Robert Höglund
    I have a Window where I have put a Frame. I would like to add a Page to the Frame when I click a button that is also on the Window but not in the Frame. There are several buttons in the Window and each click on a button should load a different Page in the Frame. Since I'm a total newbie on this WPF stuff it's quite possible that this approach is not the best and I have thought about replacing the Frame with a Canvas and then make UserControls instead of Pages that will be added to the Canvas. I welcome any ideas and suggestions on how to best solve this. I aiming for a functionality that is similar to the application Billy Hollis demonstrated in dnrtv episode 115. (http://dnrtv.com/default.aspx?showID=115).

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  • Arithmetic operators and function calling in C

    - by Robert Dalton
    I'm not quite sure why I can't do double a = (float) my_Function(45) / 2048 / 2340 / 90; printf("%.4",a); // prints out 0.00 But instead I have to use one more variable as: double a = (float) my_Function(45); double b = (float) a / 2048 / 2340 / 90; printf("%.4",b); // prints out the correct value

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  • How to control the order of module initialization in Prism

    - by Robert Taylor
    I'm using Prism V2 with a DirectoryModuleCatalog and I need the modules to be initialized in a certain order. The desired order is specified with an attribute on each IModule implementation. This is so that as each module is initialized, they add their View into a TabControl region and the order of the tabs needs to be deterministic and controlled by the module author. The order does not imply a dependency, but rather just an order that they should be initialized in. In other words: modules A, B, and C may have priorities of 1, 2, and 3 respectively. B does not have a dependency on A - it just needs to get loaded into the TabControl region after A. So that we have a deterministic and controllable order of the tabs. Also, B might not exist at runtime; so they would load as A, C because the priority should determine the order (1, 3). If i used the ModuleDependency, then module "C" will not be able to load w/o all of it's dependencies. I can manage the logic of how to sort the modules, but i can't figure out where to put said logic.

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  • how to show a html webpage in a GUI in Java

    - by Robert
    Dear all, I've recently worked on a project on search query,and I am only last step away from completion. Now I have a nice URL,and can open it in "cmd /c start" statement in Java,and it causes an IE window open. However,my advisor is not satisfied with that,he wants to see this webpage(actually,two webpages) opened in a GUI interface. So could you please give a detailed instruction on how to achieve this in Java,please?If you are trying to offer me a helpful package,would you please kindly also show how to use that as well,since I am new to this GUI development,and I only know the basics of Swing. Thanks a lot,it is dued within this week.

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  • Web development: Haskell or Scheme

    - by Robert E. Lester
    I would like to to choose one of these languages for building web applications. I'm not interested in framework per say, but have the following needs: Rapid development. Easy to scale. Strong community for the web. Quick and easy to deploy. I'm very familiar with Haskell, and have some familiarity with scheme (in particular PLT). Scheme appeals to me as good candidate for web development due to it's simple syntax which is homogenous across libraries. I state this despite my subjective opinion that Haskell is a 'cleaner' language. Haskell web apps seem to require learning and building a patchwork of different combinator libraries. On the plus side, I realise this can be quite expressive, although I'd prefer to eliminate impedance mismatches where possible. While scheme-plt looks to be a good fit, I can find but one example of it being used in the "real world". Haskell doesn't seem to fair too much better here, but there seems to be a bigger community behind the web side. Please help me make up my mind. For the most part I'm interested in real-world use cases.

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  • .NET Framework - Possible memory-leaky classes?

    - by Robert Fraser
    Just the other day I was investigating a memory leak that was ballooning the app from ~50MB to ~130MB in under two minutes. Turns out that the problem was with the ConcurrentQueue class. Internally, the class stores a linked list of arrays. When an item is dequeued from the ConcurrentQueue, the index in the array is bumped, but the item remains in the array (i.e. it's not set to null). The entire array node is dropped after enough enqueues/dequeues, so it's not technically a leak, but if storing only a few large objects in the ConcurrentQueue, this can get out of hand fast. The documentation makes no note of this danger. I was wondering what other potential memory pitfalls are in the Base Class Library? I know about the Substring one (that is, if you call substring and just hold onto the result, the whole string will still be in memory). Any others you've encountered?

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  • Postback not working with ASP.NET Routing (Validation of viewstate MAC failed)

    - by Robert
    Hi. I'm using the ASP.NET 3.5 SP1 System.Web.Routing with classic WebForms, as described in http://chriscavanagh.wordpress.com/2008/04/25/systemwebrouting-with-webforms-sample/ All works fine, I have custom SEO urls and even the postback works. But there is a case where the postback always fails and I get a: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Here is the scenario to reproduce the error: Create a standard webform mypage.aspx with a button Create a Route that maps "a/b/{id}" to "~/mypage.aspx" When you execute the site, you can navigate http://localhost:XXXX/a/b/something the page works. But when you press the button you get the error. The error doen't happen when the Route is just "a/{id}". It seems to be related to the number of sub-paths in the url. If there are at least 2 sub-paths the viewstate validation fails. You get the error even with EnableViewStateMac="false". Any ideas? Is it a bug? Thanks

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  • Can I encrypt value in C# and use that with SQL Server 2005 symmetric encryption?

    - by Robert Byrne
    To be more specific, if I create a symmetric key with a specific KEY_SOURCE and ALGORITHM (as described here), is there any way that I can set up the same key and algorithm in C# so that I can encrypt data in code, but have that data decrypted by the symmetric key in Sql Server? From the research I've done so far, it seems that the IDENTITY_VALUE for the key is also baked into the cypher text, making things even more complex. I'm thinking about just trying all the various ways I can think of, ie hashing the KEY_SOURCE using different hash algorithms for a key and trying different ways of encrypting the plain text until I get something that works. Or is that just futile? Has anyone else done this, any pointers? UPDATE Just to clarify, I want to use NHibernate on the client side, but theres a bunch of stored procedures on the database side that still perform decryption.

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  • How to unit test business rules?

    - by Robert Lamb
    I need a unit test to make sure I am accumulating vacation hours properly. But vacation hours accumulate according to a business rule, if the rule changes, then the unit test breaks. Is this acceptable? Should I expose the rule through a method and then call that method from both my code and my test to ensure that the unit test isn't so fragile? My question is: What is the right way to unit test business rules that may change?

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  • View dynamic code in Visual Studio

    - by Robert
    I generate a dynamic assembly with CSharpCodeProvider, from a C# source saved into a string. I can run the synamic code at runtime, but if I pause the execution Visual Studio doesn't show me the dinamic source code in the call stack. It says "External code" and I can't step into that source code. I think VS can't find PDB or other debug info. Can you help me?

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  • php fopen function dies, though I have file permissions set to read and write

    - by Matthew Robert Keable
    I'm following a tutorial on php, and am having difficulty getting this to work. I set the appropriate directory permissions to read and write, but every time I run this, I get the die string. The code is: $ourFileName = "testFile.txt"; $ourFileHandle = fopen($ourFileName, 'w') or die("can't open file"); fclose($ourFileHandle); As far as my basic understanding goes, if "testFile.txt" does not exist, fopen should create that file (I have basic knowledge of Python, and remember this same principle in that language). But it...it doesn't. Even if I create the aforementioned file, and put it up, that line of code still returns a die string. My hosting account does not give me permission to execute. Is this a problem? My server runs on Windows. I am using Dreamweaver CS5, on OSX 10.5.8. I've done some searching on this, and see other people having similar issues - but none of them keyed to exactly my range of problems. Being that I'm a beginner, I feel that it might be something I'm overlooking. Thanks!!

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  • Why isn't DBIx::Class::Schema::Loader creating my classes?

    - by Robert Wohlfarth
    I am trying to generate static schemas using DBIx::Class in Perl. The command shown below outputs a Schema.pm and no other files. Any idea what I'm doing wrong, or how to to debug this? U:\wohlfarj\Software\PARS>perl -MDBIx::Class::Schema::Loader=make_schema_at,dump_to_dir:.\lib -e "make_schema_at('PARS::Schema',{debug=>1},['dbi:ODBC:PARS','user','password',{AutoCommit=>0}])" Dumping manual schema for PARS::Schema to directory .\lib ... Schema dump completed. I'm using Strawberry Perl on Windows XP. The database is SQL Server 2000, accessed through an ODBC connection. I can successfully run queries using plain old DBI with the same ODBC connection.

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