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  • "Never do in code what you can get the SQL server to do well for you" - Is this a recipe for a bad design?

    - by PhonicUK
    It's an idea I've heard repeated in a handful of places. Some more or less acknowledging that once trying to solve a problem purely in SQL exceeds a certain level of complexity you should indeed be handling it in code. The logic behind the idea is that for the large majority of cases, the database engine will do a better job at finding the most efficient way of completing your task than you could in code. Especially when it comes to things like making the results conditional on operations performed on the data. Arguably with modern engines effectively JIT'ing + caching the compiled version of your query it'd make sense on the surface. The question is whether or not leveraging your database engine in this way is inherently bad design practice (and why). The lines become blurred further when all the logic exists inside the database and you're just hitting it via an ORM.

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  • A c++ program that computes the min and max of f(x) for a rectangle inputed by user

    - by StreetBallerX
    So bassicly this is the problem quoted from my teacher : "You have to write a program in C++ that computes the minimal and the maximal value of function f(x,y) obtained on an integer point in a given rectangle [a, b] x [c, d]. Your program should prompt the user to input numerical values of a, b, c and d, as floating point numbers, which are expected to be in a range from -100 thru 100. In case when minimal or maximal values do not exists, your program should output appropriate messages. f(x,y)=x+x*x+x*x*x+y+y*y " So before anyone tell me that i should try do it myself , i'll tell them that ive been trying to do it myself for the past 8 days but my deadline is aproaching and i just cant figure it out its a really simple program but i just cant understand it ... I wont post my attempts because all i saw in these forums is that when someone posts their try and a milion people start to say dont look it this way thry this and bla bla and the guy who posted it was just wondering for minor thing ... so what ever thank you all in advance and thats it :)

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  • Full screen: launchbar + panel overlaps when showing a dialog box

    - by user85921
    I'm developing a program for 12.04 that will run on full-screen, so I would like to have full control of what appears on the screen. However, when I show another window (possibly a dialog/message box), the Uunity Panel and Launcher appears on the top and left side of the screen. I've experienced this behavior with other applications (Firefox, Gnubg) as well when in full-screen mode. I tried to play with the settings, now my dialog box is hidden from the the taskbar, set to float on it's parent, which is my full screen window. The problem still exists. Is there a way to prevent these panels from showing up, when the new window isn't shown in taskbar, or it's parent is a full-screen window? Or do I need to completely disable them?

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  • Need to organize words based on their components, any other way aside from brute force?

    - by Lathan
    I'm not sure if this process has a name. I have some words (about 9,000). They are in Japanese, but I'll try to explain this using English words. I want to categorize the words by the components (in English, letters). A B C act bar play This should create: A: play B: bar C: act Now, 'a' appears in all 3 words, but I want to make sure that each category (letter) has at least word. Now, it would make sense to delete a word after it's used, but there are a few cases where 2 letters make up one word and that's each letter's only word--so I'd like to account for that somehow. Is there an approach for solving this aside from brute force? Dynamic programming perhaps? Even a name for this process (if it exists) would be great.

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  • Best way to rename existing unique field names in database?

    - by Rajdeep Siddhapura
    I have a database table that contains id, filename, userId id is unique identifier filename should also be unique table may contain 10000 records When a user uploads a file it should be entered in database with given rules: If there is no record with same filename, it should be added as it is (Ex. foobar.pdf) If there is record with same filename, it should be added as uploadedName(2).ext (foobar(2).pdf) If there are n records with same base filename (foobar), it should be added as uploadedName(n+1).ext (foobar(20).pdf) Now if foobar(2).pdf is uploaded, it should be added as foobar(2)(2).pdf & so on This pattern needs to be followed because the file is already being uploaded at client side using ajax before sending the details to server and the file hosting service follows the above rules to name the files. My solution: maintain a file that contains all the names and the number of times it has occurred. if a filename that exists in file is entered, increase occurrence count and new name is generated, else add to it to file if the new name generated is in database, add it to file and generate new name

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  • A Safe Way to Allow Upload of All File Types?

    - by user34682
    By default WordPress restricts the file types that can be uploaded to /uploads using the default Media Manager. I know it is possible to manually extend the allowed file types. I also know it is possible to change functions.php to allow ALL file types to be uploaded. This restriction obviously exists for security concerns - e.g. someone could upload a harmful .exe Would it not be possible to allow secure upload of all filetypes by setting the permissions of the /uploads directory to prevent execution of any of its contents? Thus it wouldn't matter if someone uploaded a harmful file because it would not be executable on the server...

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  • Is it possible to use the Raring install image as a package repo (like the old alternate CD)?

    - by jamadagni
    I use Kubuntu and recently upgraded to Raring directly from Precise. Until Precise, I always installed the OS using the alternate CD and not the desktop CD, because I could later on mount the image and use it as an offline package repo. For instance if I remove a package installed by the default installer and later I want to install it again, I can just install it from the ISO without needing to download it again. However, since Quantal the alternate CD no longer exists, so I am not sure how to set up the installed image as a local repo. I mean, doing find . -name "*.deb" inside the ISO tree after loopmounting it only shows a few packages like libc6 gcc and such and not the full set of packages that are actually installed -- I presume they are included in pre-installed form inside casper/filesystem.squashfs. Given this situation, is it or is it not possible to use the Raring install images as offline repos? If yes, how? Thank you!

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  • Django-admin.py not working (-bash:django-admin.py: command not found)

    - by Diego
    I'm having trouble getting django-admin.py to work... it's in this first location: /Users/mycomp/bin/ but I think I need it in another location for the terminal to recognize it, no? Noob, Please help. Thanks!! my-computer:~/Django-1.1.1 mycomp$ sudo ln -s /Users/mycomp/bin/django-admin.py /Users/mycomp/django-1.1.1/django-admin.py Password: ln: /Users/mycomp/django-1.1.1/django-admin.py: File exists my-computer:~/Django-1.1.1 mycomp$ django-admin.py --version -bash: django-admin.py: command not found

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  • [.NET] Not able to use HTMLWorker or HtmlParser in iTextSharp

    - by Steven
    I'm trying to create a PDF file of a web page using iTextSharp. In order to parse the HTML, I need to use HTMLWorker or HtmlParser. But none of them "exists" in the namespaces I'm using. I'm using the following namespaces: using iTextSharp.text; using iTextSharp.text.html; using iTextSharp.text.pdf; Am I missing something obvious?

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  • Dijkstra's Bankers Algorithm

    - by idea_
    Could somebody please provide a step-through approach to solving the following problem using the Banker's Algorithm? How do I determine whether a "safe-state" exists? What is meant when a process can "run to completion"? In this example, I have four processes and 10 instances of the same resource. Resources Allocated | Resources Needed Process A 1 6 Process B 1 5 Process C 2 4 Process D 4 7

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  • Where is QT Skin maker

    - by Andrew
    There is a tool - http://qt.nokia.com/doc/qtopia4.2/qtopiacore-qvfb.html#skins which allows to use predefined skins. But i cant find tool for skin generation. Does it exists or skins should be created manually.

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  • Detecting when error image in PictureBox is used

    - by DMan
    I found this on Google, click here, which someone asked a similar question, receiving a response that they should check if their file exists. However, I'm loading images from web links, in which it displays an error image if A)The picture is not found or B)If, like in image hosting services like Photobucket, displays the 'Bandwidth exceeded' image. Is there a way to detect if either an error image is showing or if a image is invalid?

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  • General purpose physics engine

    - by Lucas
    Is there any general purpose physics engine that allows huge simulations of rigid bodies? I'm using PhysX from Nvidia, but the focus of this engine is game development, soft bodies. I want to know if exists physics engine that runs on top of PS3 cell processors or CUDA cores allowing massive scientific physics simulations.

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  • How to speedup perforce auto resolve?

    - by Sorin Sbarnea
    I would like to know how to speedup the perforce auto resolve when doing integration (merge yours and theirs if no conflicts exists). Currently is taking hours for ~5000 files when running it using a proxy server even if the proxy server has the files pre-cached. Also p4v interface doesn't give you any hint regarding the progress of the task, you do not know if it will finish in a second or next year.

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  • Is there a javascript library that contains a rich set of very high level commonly used functions?

    - by bobo
    I find that many high level functions are missing in most well-known javascript libraries such as jquery, YUI...etc. Taking string manipulation as an example, startsWith, endsWith, contains, lTrim, rTrim, trim, isNullOrEmpty...etc. These function are actually very common ones. I would like to know if there exists a javascript library/ plugin of a javascript library that fills these gaps (including but not limited to string manipulation)? It would be great if the library does not override the prototype.

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  • Adobe AIR - file locked by air

    - by Neil
    Hello I am downloading and storing files locally in the app storage domain. For some reason one of the files gets locked by air. I found this by looking at process explorer. If I clear the browser cache the file never gets locked, only if it attempts to download the file but it exists in browser cache does air lock the damn file. Please can you help? Neil

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  • Is there any documentation on IdentityUnmarshal interface?

    - by sharptooth
    Whenever I put my component into COM+ and call CoCreateInstance() on the client the following happens: the runtime instantiates the objecs (calls IClassFactory::CreateInstance()) the runtime calls QueryInterface() for the interface specified in teh CoCreateInstance() call the runtime calls QueryInterface() for IdentityUnmarshal interface ({0000001b-0000-0000-c000-000000000046}) The only thing I can find is the declaration in comdef.h that there exists IdentityUnmarshal interface with that interface id. Is there any more information on it?

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  • Fluent Nhibernate - Mapping two entities to same table

    - by Andy
    Hi, I'm trying to map two domain entities to the same table. We're doing a smart entity for our domain model, so we have the concept of an Editable Address and a readonly Address. I have both mapped using Classmaps, and everything seems to go fine until we try to export the schema using the SchemaExport class from NHibernate. It errors out saying the table already exists. I assume it's something simple that I'm just not seeing. Any ideas? Thanks

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  • Format all elements of a list

    - by Curious2learn
    I want to print a list of numbers, but I want to format each member of the list before it is printed. For example, theList=[1.343465432, 7.423334343, 6.967997797, 4.5522577] I want the following output printed given the above list as an input: [1.34, 7.42, 6.97, 4.55] For any one member of the list, I know I can format it by using, print "%.2f" % member Is there a command/function that can do this for the whole list. I can write one, but was wondering if one already exists. Thanks.

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  • WPF TextBox DataBind on EnterKey press

    - by Jobi Joy
    The default DataBinding on TextBox is TwoWay and it commits the text to the Property only when TextBox lost its focus. Is there any easy XAML way exists to make the DataBinding Happens when I press Enter Key on the TextBox?. I know it is pretty easy to do in the code behind, but imagine if this textBox is inside some complex DataTemplate.

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  • Error: NAND: could not write file /hd2/android-sdk-linux_86/add-ons/google_apis-7_r01/images//system

    - by H.B.Dave
    I am new comer to Android development. Installed fresh Eclipse (Ganymede), Android android-sdk-linux_86. Tried HelloWorld program. Compiles OK. An AVD "my1" created for API level 7. The Emulator does not start, giving an error: [2010-03-11 16:49:49 - Emulator] NAND: could not write file /hd2/android-sdk-linux_86/add-ons/google_apis-7_r01/images//system.img, File exists Perplexed. Help requested.

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  • PyQt4.QtWebKit.QWebFrame missing findAllElements() method on debian

    - by user249095
    I recompiled PyQt4 from source, but the issue still exists. On another ArchLinux system, it works well. Can someone help me? Thanks! on Debian: import PyQt4.QtWebKit dir(PyQt4.QtWebKit.QWebFrame.findAllElements) Traceback (most recent call last): File "", line 1, in AttributeError: type object 'QWebFrame' has no attribute 'findAllElements' on ArchLinux: import PyQt4.QtWebKit dir(PyQt4.QtWebKit.QWebFrame.findAllElements) ['__call__', '__class__', '__cmp__', '__delattr__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__self__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']

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  • What is wrong with my PHP/MySQL code?

    - by James
    I am building a navigation menu which lists all my categories and subcategories. The problem is it returns only one of these and not all. I have the categories echoed inside the while loop so I'm not sure why it's only showing one result and not all: <?php $query = mysql_query("SELECT * FROM categories_parent"); while ($row = mysql_fetch_assoc($query)) { $id = $row['id']; $name = $row['name']; $slug = $row['slug']; $childStatus = $row['child_status']; // if has child categories if ($childStatus == "1") { echo "<li class='dir'><a href='category.php?slug=$slug'>$name</a>"; echo "<ul id='dropdown'>"; $query = mysql_query("SELECT * FROM categories_child WHERE parent=$id"); while ($row = mysql_fetch_assoc($query)) { $id = $row['id']; $name = $row['name']; $slug = $row['slug']; echo "<li><a href='category.php?slug=$slug'>$name</a></li>"; } echo "</ul>"; echo "</li>"; } // if singular parent else { echo "<li><a href='category.php?slug=$slug'>$name</a></li>"; } } ?> My database tables: -- -- Table structure for table `categories_child` -- CREATE TABLE IF NOT EXISTS `categories_child` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(1000) NOT NULL, `slug` varchar(1000) NOT NULL, `parent` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=139 ; -- -- Dumping data for table `categories_child` -- INSERT INTO `categories_child` (`id`, `name`, `slug`, `parent`) VALUES (138, 'Britney Spears', 'category/celiberties/britney-spears/', 137), (136, 'Tigers', 'category/animals/tigers/', 136), (137, 'Horses', 'category/animals/horses/', 136), (135, 'Lions', 'category/animals/lions/', 136); -- -- Table structure for table `categories_parent` -- CREATE TABLE IF NOT EXISTS `categories_parent` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(1000) NOT NULL, `slug` varchar(1000) NOT NULL, `child_status` int(1) NOT NULL DEFAULT '0', PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=139 ; -- -- Dumping data for table `categories_parent` -- INSERT INTO `categories_parent` (`id`, `name`, `slug`, `child_status`) VALUES (137, 'Celiberties', 'category/celiberties/', 1), (138, 'TV Shows', 'category/tv-shows/', 0), (136, 'Animals', 'category/animals/', 1);

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  • AjaxMin4 bug with Visual Studio 2010 RC?

    - by KevinUK
    When I compile my solution I get 2 errors which I did not get with version of 1.1 of AjaxMin. The "SourceFiles" parameter is not supported by the "AjaxMin" task. Verify the parameter exists on the task, and it is a settable public instance property. The "AjaxMin" task could not be initialized with its input parameters. If I re-install AjaxMin4 then reload VS it works again until I reboot the PC. Is this a known issue and is there a fix?

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