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• LabVIEW: converting numeric array to string array

  - by JaysonFix

  Using LabVIEW 2009, I have a VI that outputs an array of U64 integers. I'd like the user to be able to perform discrete selection from among the elements of this array. I'm thinking of accomplishing this by programmatically populating a Menu Ring (as shown at http://digital.ni.com/public.nsf/allkb/FB0409491FAB16FA86256D08004FCE7E). However, I apparently need to convert my array of U64 ints to an array of strings, as it is an array of strings that is used to populate the Menu Ring. My question: how can I convert the array of U64 ints to an array of strings?

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• Is there a way to put relationships/contraints into CSS?

  - by hekevintran

  In every design tool or art principle I've heard of, relationships are a central theme. By relationships I mean the thing you can do in Adobe Illustrator to specify that the height of one shape is equal to half the height of another. You cannot express this information in CSS. CSS hard-codes all values. Using a language like LESS that allows variables and arithmetic you can get closer to relationships but it's still a CSS variant. This inability in my mind is the biggest problem with CSS. CSS is supposed to be a language that describes the visual component of a Web page but it ignores relationships and contraints, ideas that are at the core of art. How possible is it to imagine a new Web design language that can express relationships and contraints that can be implemented in JavaScript using the current CSS properties?

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• How to efficiently track my geolocation during traveling using iPhone

  - by Peter Kruithof

  I'm going to travel through Thailand and I want to keep track of my location to geotag photos afterwards taken with a digital camera (iPhone's camera is not good enough). There are two things that are important here: I don't want to update manually I want the battery to last as long as possible, since the times I will be able to charge will be scarce I've thought about creating a web page that periodically sends my geolocation to a script that stores it in a database, but I don't know if GPS data is available in Mobile Safari. Second, I want the data I send to be as small as possible, and the frequency this is done s few as possible, because of the pricing of mobile data usage abroad. Any suggestions what would be a good solution here?

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• How to "kill" background worker completely?

  - by Ken Hung

  Hi All, I am writing a windows application that runs a sequence of digital IO actions repeatedly. This sequence of actions starts when the user click a "START" button, and it is done by a background worker in backgroundWorker1_DoWork(). However, there are occasions when I get the "This backgroundworker is currently busy......." error message. I am thinking of implementing the following in the code, by using a while loop to "kill" the background worker before starting another sequence of action: if (backgroundWorker1.IsBusy == true) { backgroundWorker1.CancelAsync(); while (backgroundWorker1.IsBusy == true) { backgroundWorker1.CancelAsync(); } backgroundWorker1.Dispose(); } backgroundWorker1.RunWorkerAsync(); I think my main concern is, will the backgroundWorker1 be "killed" eventually? If it will, will it take a long time to complete it? Will this coding get me into an infinite loop?

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• ASP.Net MVC and N-Tier

  - by Damien

  Greetings, Apologies in advance that I have not researched this toughly enough to answer the question myself, but I imagine it would take me some time and I would rather know now before I invest more time in learning it. I couldn't find anything in my initial research.. Why use ASP.Net MVC if your already using a multi-tier architecture (Data Layer, Logic Layer, Presentation Layer)? Other than the fact the controller has more power than the logic layer. Am I right in thinking I can use nHibernate and all my data access classes, entities, and mappings in the Model part of the MVC? When using controllers, is it best to separate a lot of the logic into a separate class so I can call it from multiple controllers? Or can I call them from the controllers themselves, considering the fact that I would not want all of them to be Actions, just normal methods. Thanks

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• Successful business model of small development tool

  - by Vladimir

  I have an idea on my mind to develop and sell small helpful developer tools like the tool asked in this question http://stackoverflow.com/questions/2562378/visual-objects-editor. I am looking for your answers which will shortly describe "How" and "What" to sell in order to be successful at that. I imagine different answers here from concrete to more general. Examples: "Sell your visual objects editor and I will buy it :-)" "Tbe only way to sell developer tool is to integrate it with known Java IDE" "Developers won't pay for the tools they use. Make it free and be famous" I encourage others to vote for the answers they like the most.

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• Good way to make animations with cocos2d?

  - by Johnny Oin

  Hi there, I'm making a little iphone game, and I would get some clues. Let's imagine: Two background sprites moving pretty fast from right to left, and moving up and down with accelerometer. I guess I can't use animations here, cause the movement of the background is recalculated at each frame. So I use a schedule with an interval of 0.025s and move my sprites at each clock with a : sprite.position = ccp(x, y); So here is my problem: the result is laggy, with only these two sprites. I tried both declaring sprites in the header, and getting them with CCNodes and Tags. It's quite the same. So if someone can give me a hint on what is the best way to do that, that would be so nice. I wonder if the problem can't be the fact that sprites are moving very fast, but i'm not sure. Anyway, thanks for your time. J.

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• Nielson's usablity scale

  - by Banderdash

  Just wondering if anyone out there knows of a standard survey (preferably based off Jacob Nielson's work on usability) that web admin's can administer to test groups for usability? I could just make up my own but I feel there as got to be some solid research out there on the sort of judgments on tasks I should be asking. For example Q:: Ask user to find profile page Do I ... A.) Present them with standard likert scale after each question B.) Present them the likert after all the questions .. Then what should that likert be, I know Nielson's usability judgments scale is based on Learnability, Efficiency of Use, Memorability, Error Rate, Satisfaction but I can only imagine a likert I would design that would effectively measure satisfaction...how am I suppose to ask a user to rank the Memorability of a site after one use on a 1-5 scale? Surely someone has devised a good way to pose the question?

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• What is the underlying reason for not being able to put arrays of pointers in unsafe structs in C#?

  - by cons

  If one could put an array of pointers to child structs inside unsafe structs in C# like one could in C, constructing complex data structures without the overhead of having one object per node would be a lot easier and less of a time sink, as well as syntactically cleaner and much more readable. Is there a deep architectural reason why fixed arrays inside unsafe structs are only allowed to be composed of "value types" and not pointers? I assume only having explicitly named pointers inside structs must be a deliberate decision to weaken the language, but I can't find any documentation about why this is so, or the reasoning for not allowing pointer arrays inside structs, since I would assume the garbage collector shouldn't care what is going on in structs marked as unsafe. Digital Mars' D handles structs and pointers elegantly in comparison, and I'm missing not being able to rapidly develop succinct data structures; by making references abstract in C# a lot of power seems to have been removed from the language, even though pointers are still there at least in a marketing sense. Maybe I'm wrong to expect languages to become more powerful at representing complex data structures efficiently over time.

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• Is there some smart way of customizing ajax message text in jQuery?

  - by Fedor

  I have tons of ajax components on this booking engine. I need to customize the text inside of the modal for each of the components to suite. I added: $('#loader').bind('ajaxStart', function() { $(this).show().addClass('modalOpen'); }).bind('ajaxComplete', function() { $(this).removeClass('modalOpen').hide() }); Is there some advanced way of changing the text inside of the loading element before I do separate .ajax calls? Or do I just have to manually do something like $('#loader').text('blah'); $.ajax({}) Furthermore, this may sound silly but is there a way to not have the loader show up for certain components? If not I imagine I'll have to do something like $('someel').someEvent(function() { $('#loader').addClass('override-hide'); $.ajax({ success:function() { $('#loader').removeClass('override-hide'); } }) }) #loader.override-hide { display:none !important; }

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• How can I use Spring Security without sessions?

  - by Jarrod

  I am building a web application with Spring Security that will live on Amazon EC2 and use Amazon's Elastic Load Balancers. Unfortunately, ELB does not support sticky sessions, so I need to ensure my application works properly without sessions. So far, I have setup RememberMeServices to assign a token via a cookie, and this works fine, but I want the cookie to expire with the browser session (e.g. when the browser closes). I have to imagine I'm not the first one to want to use Spring Security without sessions... any suggestions?

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• SVN: is it possible to delete a branch that was copied removed etc for good?

  - by dimus

  I have to remove a branch from svn history for good. Normally I would use svnadmin dump /path/to/repo |svndumpfilter --drop-empty-revs --renumber-revs exclude /branches/bad_branch However this branch was not just created, but also moved and then removed and dump script fails to process downstream information with messages like: Invalid copy source path '/branches/bad_branch' So I imagine 2 ways to cope with the problem keep only last few revisions of the history and put current repository as an archive on the web make a dump up to the revision where the 'bad_branch' was created and apply the rest of the changes as a patch, therefore losing history of a few recent commits. Is there a better, cleaner way to deal with this?

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• .Net Array or IList<T> from NumPy array in IronPython?

  - by Barry Wark

  Imagine I have a .Net application that supports user extensions in the form of Python modules by embedding IronPython. Using Ironclad, I can allow users to make use of the NumPy and SciPy packages from within their modules. How good is the interop provided by Ironclad? My question is: can I use a NumPy array of type T provided by the user's module in the rest of my app that requires an IList<T>? Edit To clarify, IronPython exposes any Python enumerable of objects of type T as an IEnumerable<T> or an IList<T>. I'm not sure if NumPy arrays fit in this category. I would rather not have to call .tolist() on the NumPy array as the arrays may be quite large.

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• android content provider robustness on provider crash

  - by user1298992

  On android platforms (confirmed on ICS), if a content provider dies while a client is in the middle of a query (i.e. has a open cursor) the framework decides to kill the client processes holding a open cursor. Here is a logcat output when i tried this with a download manager query that sleeps after doing a query. The "sleep" was to reproduce the problem. you can imagine it happening in a regular use case when the provider dies at the right/wrong time. And then do a kill of com.android.media (which hosts the downloadProvider). "Killing com.example (pid 12234) because provider com.android.providers.downloads.DownloadProvider is in dying process android.process.media" I tracked the code for this in ActivityManagerService::removeDyingProviderLocked Is this a policy decision or is the cursor access unsafe after the provider has died? It looks like the client cursor is holding a fd for an ashmem location populated by the CP. Is this the reason the clients are killed instead of throwing an exception like Binders when the server (provider) dies ?

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• IIS 6.0: what is the WMI equivalent of "Convert Folder To Application"?

  - by Richard Berg

  Basically, imagine you need to automate these steps: Open Internet Information Services. Find the web site, find the folder, right click the folder and select properties. Click the Directory folder. Under Applications settings, click the Create button. The application is now created. Click OK to finish. (click for a pictoral walkthru) My end goal is Powershell, but answers that use JScript or VB.NET or whatever are fine too. Bonus points if the same code works against an IIS7 application running in 6.0 Compatibility Mode.

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• NSDictionary with specific property of plist

  - by Leonardo

  Hi, I have a plist with key values. Each key represent a language, let's say 'it' 'en' ....ecc The value of each key is another key/value(=array) set. At startup I would like to create a dictionary by reading only a specific key. Let's say the locale of my iphone is 'it', then the init method would only parse it key, because the only way I found by now is to make a dictionary from the whole plist file and then another dictionary. But I can imagine this can become quite cpu consuming if I add more language in the future. thanks Leonardo

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• DROP TABLE fails for temp table

  - by StarBright

  I have a client application that creates a temp table, the performs a bulk insert into the temp table, then executes some SQL using the table before deleting it. Pseudo-code: open connection begin transaction CREATE TABLE #Temp ([Id] AS int) bulk insert 500 rows into #Temp UPDATE [OtherTable] SET [Status]=0 WHERE [Id] IN (SELECT [Id] FROM #Temp) AND [Group]=1 DELETE FROM #Temp WHERE [Id] IN (SELECT [Id] FROM [OtherTable] WHERE [Group]=1) INSERT INTO [OtherTable] ([Group], [Id]) SELECT 1 as [Group], [DocIden] FROM #Temp DROP TABLE #Temp COMMIT TRANSACTION CLOSE CONNECTION This is failing with an error on the DROP statement: Cannot drop the table '#Temp', because it does not exist or you do not have permission. I can't imagine how this failure could occur without something else going on first, but I don't see any other failures occurring before this. Is there anything that I'm missing that could be causing this to happen?

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• Can a Flash-based CFGRID render basic HTML in the cells?

  - by richardtallent

  (I'm very new to both Flex and CF -- more a .NET/ExtJS guy, so I'm a duck out of water.) I'm tweaking someone else's CFGRID code. It uses Flash format--HTML isn't an option since it would require redesigning the entire interface around the grid. Tha data I want to put in the grid have some very simple HTML elements-- <sub>, <sup>, and HTML entities like &deg;. I can imagine <i> or <b> might be there in the future. How can I tell a particular CFGRIDCOLUMN to render its contents as HTML? I've heard this is possible, but Google is not my friend tonight. Stuck with CF7 for a few more weeks, so if there are any CF8/CF9-specific solutions, please let me know those as well, but that won't help my immediate need.

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• Hibernate: @UniqueConstraint with @ManyToOne field???

  - by Misha Koshelev

  Dear All: Using the following code: @Entity @Table(uniqueConstraints=[@UniqueConstraint(columnNames=["account","name"])]) class Friend { @Id @GeneratedValue(strategy=GenerationType.AUTO) public Long id @ManyToOne public Account account public String href public String name } I get the following error: org.hibernate.AnnotationException: Unable to create unique key constraint (account, name) on table Friend: account not found It seems this has to do with the @ManyToOne constraint, which I imagine actually creates a separate UniqueConstraint??? In any case, if I take this out, there is no complaint about the UniqueConstraint, but there is another error which makes me believe it must be left in. org.hibernate.MappingException: Could not determine type for: com.mksoft.fbautomate.domain.Account, at table: Friend, for columns: [org.hibernate.mapping.Column(account)] Any hints how I can create such a desired constraint (i.e., that each combination of account and name occurs only once???) Thank you! Misha

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• Ask a DNS server what sites it hosts - and how to possibly prevent misuse

  - by Exit

  I've got a server which I host my company website as well as some of my clients. I noticed a domain which I created, but never used, was being attacked by a poke and hope hacker. I imagine that the hacker collected the domain from either hitting my DNS server and requesting what domains are hosted. So, in the interest of prevention and better server management, how would I ask my own DNS server (Linux CentOS 4) what sites are being hosted on it? Also, is there a way to prevent these types of attacks by hiding this information? I would assume that DNS servers would need to keep some information public, but I'm not sure if there is something that most hosts do to help prevent these bandwidth wasting poke and hope attacks. Thanks in advance.

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• Java ServerSocket Multiple Listen Instances

  - by ikurtz

  i have a java game app that uses sockets to communicate with each other. the issue is when i do a socket listen (server), i can run another instance of the game on the same machine using the same port as before to listen, and it results in listening again. now i have two instances of the application both listening on the same port. you can imagine only one connects when a connection comes through. the question is: how do i prevent the app from listening on the same port as another instance is already listening to? thanks in advance. EDIT: serverSocket = new ServerSocket(serverPort, backlog); im using this. should i try to use: ServerSocket(int port, int backlog, InetAddress bindAddr) instead? EDIT: SOLVED! i did not handle the exception only trapped it. now it is working well. thanks for your inputs.

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• Is there a social networking protocol

  - by Marwan

  Social networking is great, but there is something fundamentally wrong with the way social networking is implemented today in most popular services. I'll put it in this example: Imagine that there is no SMTP, and consequently, it is globally assumed and accepted that you can only send email to addresses on the same domain. The result would be the emergence of a single email service, let's call it emailbook.com, which we all have to subscribe to, if we really want to communicate with the world. This is what's happening with social networking today. You HAVE to use the same service your fiends/colleagues are using to talk to them. I would like to be able to put up my own social site, invite my friends who trust me, share amongst us, but still be able to share with the world at large. What are the chances of this scenario happening in the future? What does it take?

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• What would you recommend to do simple 2D Graphics?

  - by Tom Ritter

  I want to build a program that will (as part of what it's doing) display lines organically growing and interacting horizontally across the screen. Here's a sample image, just imagine the lines sprouting from the left and growing to the right: The lines would look like the lines used on Google Maps Transit Overlay or OnNYTurf's transit pages. It's a personal project, so I'm open to just about any language and library combination. But I don't know where to start. What have you used in the past to create graphics that are similar to this? What would you recommend? I want it to run on Windows without any extras needed (.Net is fine), and it doesn't have to run elsewhere. I needs to run as an actual program, not javascript in the browser. There's obviously no 'right' answer to this, but the purpose isn't to start an argument about X better than Y but rather just find a list of graphics toolkits that do simple 2D graphics that people recommend because of their ease of use or community or whatever.

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• How do I create a check constraint?

  - by Zack Peterson

  Please imagine this small database... Diagram Tables Volunteer Event Shift EventVolunteer ========= ===== ===== ============== Id Id Id EventId Name Name EventId VolunteerId Email Location VolunteerId Phone Day Description Comment Description Start End Associations Volunteers may sign up for multiple events. Events may be staffed by multiple volunteers. An event may have multiple shifts. A shift belongs to only a single event. A shift may be staffed by only a single volunteer. A volunteer may staff multiple shifts. Check Constraints Can I create a check constraint to enforce that no shift is staffed by a volunteer that's not signed up for that shift's event? Can I create a check constraint to enforce that two overlapping shifts are never staffed by the same volunteer?

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• How do I do a postback to a CGI service

  - by TheLearner

  I am building a C# client for a CGI service (not sure what its called exactly). It accepts a bunch of XML and spits out a response. I have tested it straight in Firefox and it works (see below). Now I am not sure how to do this in C# code though? Does anyone have a helpful snippet of code, I can't imagine it would be that difficult? http://www.travelcommunications.co.uk/cgi-bin/d3web_gzip.ssh?%3CTCOML%20version=%22NEWFORMAT%22%3E%3CTransferOnly%3E%3CAvailability%3E%3CRequest%3E%3CAgentCode%3ETEST%3C/AgentCode%3E%3CAgentType%3ETA%3C/AgentType%3E%3CDeparturePointCode%3EALC%3C/DeparturePointCode%3E%3CDeparturePointType%3EAIRPORT%3C/DeparturePointType%3E%3CArrivalPointCode%3EBEN%3C/ArrivalPointCode%3E%3CArrivalPointType%3ERESORT%3C/ArrivalPointType%3E%3CSectorType%3ERETURN%3C/SectorType%3E%3CArrDate%3E10.10.10%3C/ArrDate%3E%3CArrTime%3E10:00%3C/ArrTime%3E%3CRetDate%3E17.10.10%3C/RetDate%3E%3CRetTime%3E10:00%3C/RetTime%3E%3CBrochure%3E001%3C/Brochure%3E%3CAdults%3E2%3C/Adults%3E%3CChildren%3E0%3C/Children%3E%3CInfants%3E0%3C/Infants%3E%3CCurrencyCode%3EUKL%3C/CurrencyCode%3E%3C/Request%3E%3C/Availability%3E%3C/TransferOnly%3E%3C/TCOML%3E

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