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  • Using 'ref code' related to the spinner option chosen

    - by user1508541
    I am trying to add a spinner function in a trial app which compares the frequency charts of earphones. I am trying to extract the info from " http://www.headphone.com/learning-center/build-a-graph.php " website. what I want to do is make the spinner work like the drop down list in the mentioned website. On further inspection what I found was that every dropdown element is provided with a unique code that is called when the particular element is selected. I need help in replicating the same in an android spinner.

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  • Compilation Error related

    - by aparna
    Given: 11. public static void test(String str) { 12. int check = 4; 13. if (check = str.length()) { 14. System.out.print(str.charAt(check -= 1) +", "); 15. } else { 16. System.out.print(str.charAt(0) + ", "); 17. } 18. } and the invocation: 21. test("four"); 22. test("tee"); 23. test("to"); What is the result? A. r, t, t, B. r, e, o, C. Compilation fails. D. An exception is thrown at runtime. Answer: C Can you explain why the compilation fails please?

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  • related to gdata in iphone

    - by sandhya
    my application is working fine in simulator but when i tried to build it on ipod it is giving some error i.e., "_OBJC_CLASS_$_GDataServiceGoogleSpreadsheet", referenced from: __objc_classrefs__DATA@0 in spreadsheetViewController.o and "_kGDataGoogleSpreadsheetsPrivateFullFeed", referenced from: _kGDataGoogleSpreadsheetsPrivateFullFeed$non_lazy_ptr in spreadsheetViewController.o

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  • Hibernate - join un related objects

    - by CuriousMind
    I have a requirement, wherein I have to join two unrelated objects using Hibernate HQL. Here is the sample POJO class class Product{ int product_id; String name; String description; } and Class Item{ int item_id; String name; String description; int quantity; int product_id; //Note that there is no composed product object. } Now I want to perform a query like select * from Product p left outer join Item i on p.product_id = i.item_id I want a multidimensional array as an output of this query so that I can have separate instances of Product and Item, instead of one composed in another. Is there any way to do this in Hibernate?

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  • URL Encryption vs. Encoding

    - by hozza
    At the moment non/semi sensitive information is sent from one page to another via GET on our web application. Such as user ID or page number requested etc. Sometimes slightly more sensitive information is passed such as account type, user privileges etc. We currently use base64_encode() and base64_decode() just to de-humanise the information so the end user is not concerned. Is it good practice or common place for a URL GET to be encrypted rather than simply PHP base64_encoded? Perhaps using something like, this: $encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key)))); $decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($encrypted), MCRYPT_MODE_CBC, md5(md5($key))), "\0"); Is this too much or too power hungry for something as common as the URL GET.

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  • 3D Location Handling

    - by tgrosinger
    I am thinking about making a simulator type game that will involve having lots of small objects in a 3D space. What is the typical solution for handling these objects? The first thing that comes to mind is a 3D Array, but I can't help but think there is a more efficient solution. Another idea that comes to mind is objects having possession of smaller items. For example a House possesses a Table which possesses a Cup and Bowl. The final way I can think of handling this is just having an array of "objects" that each have an x, y, z value. While this would make storing them easy I do not understand how you would detect collisions without just looking at every possible object and checking to see if it is in the way. Are there other ways of holding onto these objects that is more efficient?

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  • Best programming language for teaching econometrics?

    - by TJB
    I will be teaching an econometrics course to masters students in the fall. I think it is important for them to learn programming with data as an essential applied research skill. What suggestions do you have for the programming language. I am leaning mostly towards R. What others should I consider?

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  • not able to update ruby (and also not able to install gems)

    - by abhishek
    I am new to ruby. OS: Windows XP Ruby Version --ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32] When I run gem update --system after installing ruby I am getting this error C:\Documents and Settings\abhisheksreepal>gem update --system Updating RubyGems Updating rubygems-update ERROR: While executing gem ... (Gem::InstallError) invalid gem format for C:/Ruby/lib/ruby/gems/1.8/cache/rubygems-update-1.3.5.gem

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  • Cross-platform & 3D mobile game development [on hold]

    - by Sylvia MBemba
    I am not a developer or programmer and, I am planning an educative project that will involve having students to develop a cross-platform, 3D mobile game, similar to the SimCity concept. I need to write a project requirement and I'd like to pick someone's brain to understand what's involved in developing such a project: Is it realistic to have one or two students to do it? and along their other modules at uni? How much time can it take to develop from scratch? what are the different skills required?

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  • How important is self-teaching in the programming field? [closed]

    - by ThePlan
    I'm 16. I started programming about a year ago when I was about to start high-school. I'm going for a career in programming, and I'm doing my best to learn as much as I can. When I first started, I learned the basics of C++ from a book and I started to learn things by myself from there on. Nowadays I'm much more experienced than I was a year ago. I knew I had to study by myself because high-school won't (likely) teach me anything valuable about programming, and I want to be prepared. The question here is: how important is it to study programming by oneself?

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  • Disable automatic index on related object id from yml

    - by BugBusterX
    Doctrine Automatically creates indexes on columns that are used to define object relations, For example user: id, name message: id, sender_id, receiver_id, message if I define relationship between message and user in a way that message has one Sender and has one Receiver, doctrine will automatically index sender_id and receiver_id fields when I generate sql from model. I would like to disable index on sender, because I manually create index with sender_id and receiver id together. How can I disable auto generated index?

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  • Cannot see index view of my controller - routing related

    - by olst
    Hi. I have a controller named Content, which has an Index action, which is associated with a view. I would like the simple route "content" to show me the index view of the content controller, so I use the following code (with the addition of the default site home route): routes.MapRoute( "ContentIndex", "content", new { controller = "Content", action = "Index"} ); routes.MapRoute( "Default", "{controller}/{action}", new { controller = "Home", action = "Index" } ); when I type the url : "http://localhost/content/", I get an error 404 saying the resource cannot be found, but when I type "http://localhost/content/index", it shows the content index view. How can I get rid of the index in the url ? Thanks !

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  • update(100) behaves slightly different than 10 times update(10) - is that a problem? [on hold]

    - by futlib
    While looking into some test failures, I've identified an curious issue with my update logic. This: game.update(100); Behaves slightly different from: for (int i = 0; i < 10; i++) game.update(10); The concrete example here is a rotating entity. It rotates by exactly 360 degrees in the first case, but only by about 352 in the second. This leads to slight variations in how things move, depending on the frame rate. Not enough to be noticeable in practice, but I did notice it when writing tests. Now my question is: Should this be fully deterministic, i.e. the outcome of update(1) * n should equal update(n) exactly? Or is it normal to have some variance and I should make my test assertions more generous?

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  • Vertex Array Object (OpenGL)

    - by user5140
    I've just started out with OpenGL I still haven't really understood what Vertex Array Objects are and how they can be employed. If Vertex Buffer Object are used to store vertex data (such as their positions and texture coordinates) and the VAOs only contain status flags, where can they be used? What's their purpose? As far as I understood from the (very incomplete and unclear) GL Wiki, VAOs are used to set the flags/status for every vertex, following the order described in the Element Array Buffer, but the wiki was really ambiguous about it and I'm not really sure about what VAOs really do and how I could employ them.

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  • Row Versioning Concurrency in SQL Server

    The optimistic concurrency model assumes that several concurrent transactions can usually complete without interfering with each other, and therefore do not require draconian locking on the resources they access. SQL Server 2005, and later, implements a form of this model called row versioning concurrency. It works by remembering the value of the data at the start of the transaction and checking that no other transaction has modified it before committing. If this optimism is justified for the pattern of activity within a database, it can improve performance by greatly reducing blocking. Kalen Delaney explains how it works in SQL Server.

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  • Swiz Framework and Spring Framework - Are they related?

    - by theband
    I was looking into Swiz framework and i felt the same of Spring. Just i felt the difference between these two is one is JAVA based and the other is Action Script based. http://swizframework.org/ http://www.springsource.org/ My Question is: Does the goal of the both framework is same? Does the pattern they apply is same or different? The concept of beans, dependency injection and IOC lies in both.

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  • a question related to Google Translate

    - by Robert
    Hi all, it works perfectly fine if I paste the following URL directly into my IE address bar: http://translate.google.cn/translate?hl=zh-CN&sl=zh-CN&tl=en&u=http%3A%2F%2Fnews.baidu.com%2Fns%3Fword%3D%25B0%25C2%25B0%25CD%25C2%25ED it will translate some Chinese news pages into English ones. but if I call this address in a Java program like: Process q=Runtime.getRuntime().exec("cmd /c start http://translate.google.cn/translate?hl=zh-CN&sl=zh-CN&tl=en&u=http%3A%2F%2Fnews.baidu.com%2Fns%3Fword%3D%25B0%25C2%25B0%25CD%25C2%25ED"); It will only return to the Google translate main page. Wonder what went wrong there. and it would be great if you help me how to realize this(opening the Google translated result page simplying by supplying the URL,in a Java program). Many thanks.

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  • question related to Iphone autorelease usage

    - by user524331
    Could someone help me please understand how allocation and memory management is done and handled in following scenario. i am giving a Psuedo code example and question thats troubling me is inline below: interface first { NSDecimalNumber *number1; } implementation ..... -(void) dealloc { [number1 release]; [super dealloc]; } ================================= interface second { NSDecimalNumber *number2; } implementation second ..... - (First*) check { First *firstObject = [[[First alloc] init] autorelease]; number1 = [[NSDecimalNumber alloc] initWithInteger:0]; **// do i need to autorelease number1 as well?** return firstObject; }

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  • Strange type-related error

    - by vsb
    I wrote following program: isPrime x = and [x `mod` i /= 0 | i <- [2 .. truncate (sqrt x)]] primes = filter isPrime [1 .. ] it should construct list of prime numbers. But I got this error: [1 of 1] Compiling Main ( 7/main.hs, interpreted ) 7/main.hs:3:16: Ambiguous type variable `a' in the constraints: `Floating a' arising from a use of `isPrime' at 7/main.hs:3:16-22 `RealFrac a' arising from a use of `isPrime' at 7/main.hs:3:16-22 `Integral a' arising from a use of `isPrime' at 7/main.hs:3:16-22 Possible cause: the monomorphism restriction applied to the following: primes :: [a] (bound at 7/main.hs:3:0) Probable fix: give these definition(s) an explicit type signature or use -XNoMonomorphismRestriction Failed, modules loaded: none. If I specify signature for isPrime function explicitly: isPrime :: Integer -> Bool isPrime x = and [x `mod` i /= 0 | i <- [2 .. truncate (sqrt x)]] I can't even compile isPrime function: [1 of 1] Compiling Main ( 7/main.hs, interpreted ) 7/main.hs:2:45: No instance for (RealFrac Integer) arising from a use of `truncate' at 7/main.hs:2:45-61 Possible fix: add an instance declaration for (RealFrac Integer) In the expression: truncate (sqrt x) In the expression: [2 .. truncate (sqrt x)] In a stmt of a list comprehension: i <- [2 .. truncate (sqrt x)] 7/main.hs:2:55: No instance for (Floating Integer) arising from a use of `sqrt' at 7/main.hs:2:55-60 Possible fix: add an instance declaration for (Floating Integer) In the first argument of `truncate', namely `(sqrt x)' In the expression: truncate (sqrt x) In the expression: [2 .. truncate (sqrt x)] Failed, modules loaded: none. Can you help me understand, why am I getting these errors?

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  • Is there such a concept as "pseudo implementation" in software development?

    - by MachuPichu
    I'm looking for a label to describe the practice of using human-based computation methods or other means of "faking" an algorithm for the sake of getting a product or demo off the ground quickly without spending the time to develop an technical/scalable/analytical solution? Eg: using Amazon Turk to count the number of empty tables in a restaurant. I'm also looking to learn more about this subject, but not sure what to search for. Human-based computation is only one method, I'm interested in the general idea of pseudo-implementation. Any ideas, recommended reading? Thanks

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  • A question is related to exception

    - by user217572
    * -[UIDeviceRGBColor size]: unrecognized selector sent to instance 0x31e520 2010-03-18 12:36:48.511 IChitMe[4012:207] Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[UIDeviceRGBColor size]: unrecognized selector sent to instance 0x31e520' I'm getting this exception when I'm clicking on back button of UIToolBar

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