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Articles indexed Monday March 29 2010

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  • atomic operation cost

    - by osgx
    Hello What is the cost of the atomic operation? How much cycles does it consume? Will it pause other processors on SMP or NUMA, or will it block memory accesses? Will it flush reorder buffer in out-of-order CPU? What effects will be on the cache? Thanks.

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  • [GoogleMaps] Get GLatLng from GPoint

    - by Jo Asakura
    Hello everybody, I have a google map with my own map type: var currentProjection = new GMercatorProjection(maxLevels + 1); var mapBounds = new GLatLngBounds(new GLatLng(-9, -15), new GLatLng(9, 15)); var custommap = new GMapType(tilelayers, currentProjection, "Some project"); map.addMapType(custommap); map.setCenter(mapBounds.getCenter(), minLevels, custommap); When user clicks on map then context menu appears (singlerightclick event), from context menu user can add markers and I need a GLatLng value to add marker to the map but singlerightclick event contains only GPoint value. I try to use next statement: map.getCurrentMapType().getProjection().fromPixelToLatLng(pointValueFromEvent, map.getZoom()); but it wasn't helpfull (GLatLng value is outside of my map). I think it's because I use my own map type, how can I get GLatLng value to add the marker? Best regards, Alex.

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  • Facebook require_login() in iFrame App

    - by LapKom
    Hi, I have serious problem with iframe application. I need to use many external JS libraries and other dynamic stuuf so FMBL application can't be done. When I call require_login() I get applicaition installing dialog when app is not already installed, which is ok. But then after authorization application enters an endless redirect loop with parameters like auth_token, installed and so. Yesterday I managed to fix this, but today it's broken again... What the heck is happening with FB? It's driving me crazy to find a sollution, none of ones found on net doesn't seem to be working. So far I tried: http://abhirama.wordpress.com/2010/03/07/facebook-iframe-xfbml-app/ (7th march 2010!) http://forum.developers.facebook.com/viewtopic.php?pid=156092 http://www.keywordintellect.com/facebook-development/how-to-set-up-a-facebook-iframe-application-in-php-in-5-minutes/ http://www.markdeepwell.com/2010/02/validating-a-facebook-session-within-an-iframe/ http://forum.developers.facebook.com/viewtopic.php?pid=210449 http://www.ajaxlines.com/ajax/stuff/article/facebook_fbml_rendering_in_iframe_application.php http://www.aratide.com/php/solving-the-break-out-issue-in-iframe-facebook-applications/ None of the above worked... According to those and some FB docs: http://wiki.developers.facebook.com/index.php/FB_RequireFeatures http://wiki.developers.facebook.com/index.php/Cross_Domain_Communication_Channel My example test files look as follow: <?php //Link in library. require_once '../application/vendor/Facebook/facebook.php'; //Authentication Keys $appapikey = 'XXXX'; $appsecret = 'XXXX'; //Construct the class $facebook = new Facebook($appapikey, $appsecret); //Require login $user_id = $facebook->require_login(); ?> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:fb="http://www.facebook.com/2008/fbml"> <head> <title></title> </head> <body> <script src="http://static.ak.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php" type="text/javascript"></script> This is you: <fb:name uid="<?php echo $user_id?>"></fb:name> <?php var_dump($facebook->$this->facebook->api_client->friends_get())?> <script type="text/javascript"> FB_RequireFeatures(["XFBML"], function(){ FB.Facebook.init("<?=$appapikey?>", "xd_receiver.html"); }); </script> </body> </html> And cross-domain file xd_receiver.html is: <!doctype html public "-//w3c//dtd xhtml 1.0 strict//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>cross-domain receiver page</title> </head> <body> <script src="http://static.ak.facebook.com/js/api_lib/v0.4/XdCommReceiver.js" type="text/javascript"></script> </body> </html> How do I get it working? I'm using Kohana framework to do this and already replaced header('Location') with url::redirect() in facebook php library.

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  • Active Directory Services: PrincipalContext -- What is the DN of a "container" object?

    - by Ranger Pretzel
    I'm currently trying to authenticate via Active Directory Services using the PrincipalContext class. I would like to have my application authenticate to the Domain using Sealed and SSL contexts. In order to do this, I have to use the following constructor of PrincipalContext (link to MSDN page): public PrincipalContext( ContextType contextType, string name, string container, ContextOptions options ) Specifically, I'm using the constructor as so: PrincipalContext domainContext = new PrincipalContext( ContextType.Domain, domain, container, ContextOptions.Sealing | ContextOptions.SecureSocketLayer); MSDN says about "container": The container on the store to use as the root of the context. All queries are performed under this root, and all inserts are performed into this container. For Domain and ApplicationDirectory context types, this parameter is the distinguished name (DN) of a container object. What is the DN of a container object? How do I find out what my container object is? Can I query the Active Directory (or LDAP) server for this?

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  • MovieClip changes Stage alignment

    - by Nicholas Cowle
    I am loading a MovieClip using MovieClipLoader. When the MovieClip starts playing, it changes the alignment of my stage to LT, which incorrectly repositions all the other objects on my stage. Is there anyway for me to: Prevent the MovieClip from changing the alignment of my stage? Adding an event handler to an appropriate event, so that I can reset the stage alignment when it gets changed? I have already tried resetting the stage alignment on the onLoadInit event of MovieClipLoader and the onEnterFrame event of MovieClip, but both seem to reset the alignment too soon.

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  • What happens if two COM classes each without a threading model are implemented in one in-proc COM se

    - by sharptooth
    Consider a situation. I have an in-proc COM server that contains two COM classes. Both classes are marked as "no threading model" in the registry - the "ThreadingModel" value is just absent. Both classes read/write the same set of global variable without any synchronization. As far as I know "no threading model" will enforce COM to disallow concurrent access to the same or different instances of the same class by different threads. Will COM prevent concurrent access to instances of the two abovementioned different classes? Do I need synchronization when accessing the global variables from two different COM classes in this situation?

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  • How often should we write unit tests?

    - by Midnight Blue
    Hi, I am recently introduced to the test-driven approach to development by my mentor at work, and he encourages me to write an unit-test whenenver "it makes sense." I understand some benefits of having a throughout unit-test suite for both regression testing and refractoring, but I do wonder how often and how throughout we should write unit-test. My mentor/development lead asks me to write a new unit test-case for a newly written control flow in a method that is already being tested by the exsisting test class, and I think it is an overkill. How often do you write your unit tests, and how detailed do you think your unit tests should be? Thanks!

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  • Spring MVC Best Practice Handling Unrecoverable Exceptions In Controller

    - by jboyd
    When you have a controller that does logic with services and DAO's that may throw an unrecoverable exception, what is the best practice in dealing with those method calls? Currently an app I'm working on has very lengthy try catch methods that simply err.out exception messages, this doesn't seem very robust and I think that this code smells, is there any cookie cutter best practice for handling this in spring-mvc?

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  • C# int to byte[]

    - by Petoj
    If I need to convert an int to byte[] I could use Bitconvert.GetBytes(). But if I should follow this: An XDR signed integer is a 32-bit datum that encodes an integer in the range [-2147483648,2147483647]. The integer is represented in two's complement notation. The most and least significant bytes are 0 and 3, respectively. Integers are declared as follows: Taken from RFC1014 3.2. What method should I use then if there is no method to do this? How would it look like if you write your own? I don't understand the text 100% so I can't implement it on my own.

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  • Watermark asp:Login control Username and Password fields

    - by Gogster
    Hi all, I'm trying to watermark the asp:Login controls' Username and Password fields with jQuery, I've tried various ways of referencing the control ID: $('#<%=ClientID.Login1_UserName %>').watermark('watermark', 'Username'); I have tried moving the ClientID, Login1 and UserName around and changing the selectors to and from userscores and periods... Any ideas?

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  • Transform data to a new structure

    - by rAyt
    Hi, I've got an Access database from one of our clients and want to import this data into a new MSSQL Server 2008 database structure I designed. It's similar to the Access Database (including all the rows and so on) but I normalized the entire database. Is there any tool (microsoft tools preferred) to map the old database to my new design? thanks

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  • System File Missing

    - by hossam-khalili
    Hello, I have Windows SBS 2008 R2 use it as file server and i missing some system32 file, so i need to repair it but I don't know how repair/restore this file. Can anyone help me? Thanks

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  • Error message downloading documents

    - by Scarlet Riley
    Hi, I hope someone can help me. I have a 3 yr old MacBook Pro and lately I've been getting an error msg when I try to download something to my machine, This is what it says: Download error /Users/scarletriley/Downloads/the name of document goes here- no spaces of course! could not be opened, because an unknown error occurred. Try saving to a disk first and then opening the file. What does this mean, and what should I do to fix it? Thanks! Scarlet

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  • How to get innovation in product development?

    - by simonsabin
    I was at Redgate last week and say plastered all over the canteen wall flip chart sheets with ideas scrawled over them. I was going to take a photo but thought it might not be allowed. I asked what it was all about and they told me that ALL the development team are going to stop working on what they are doing and do whatever they want. Whatever they want? yes So thats the whole team working on something? No, it can be individual or in groups. Having worked in product teams before I and the others...(read more)

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  • Street-Fighting Mathematics

    Sanjoy Mahajan's new book lays out practical tools for educated guessing and down-and-dirty problem-solving Problem solving - Math - Recreations - Competitions - Methods and Theories

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  • Global ignore pattern for TortoiseSVN / Visual Studio 2010

    - by Chris Simmons
    After installing and using Visual Studio 2010, I'm seeing some newer file types (at least with C++ projects ... don't know about the other types) as compared to 2008. e.g. .sdf, .opensdf, which I guess are the replacement for ncb files with Intellisense info stored in SQL Server Compact files? I also notice .log files are generated, which appear to be build logs. Given this, what's safe to add to my global ignore pattern? Off the bat, I'd assume .sdf, .opensdf, but what else?

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  • CoreGraphics on iPhone. What is the proper way to load a PNG file with pre-multiplied alpha?

    - by dugla
    For my iPhone 3D apps I am currently using CoreGraphics to load png files that have pre-multiplied alpha. Here are the essentials: // load a 4-channel rgba png file with pre-multiplied alpha. CGContextRef context = CGBitmapContextCreate(data, width, height, 8, num_channels * width, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); // Draw the image into the context CGRect rect = CGRectMake(0, 0, width, height); CGContextDrawImage(context, rect, image); CGContextRelease(context); I then go on and use the data as a texture in OpenGL. My question: By specifying pre-multiplied alpha - kCGImageAlphaPremultipliedLast - am I - inadvertently - telling CoreGraphics to multiply the r g b channels by alpha or - what I have assumed - am I merely indicating that the format of the incoming image has pre-multiplied alpha? Thanks, Doug

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  • jQuery-UI tabs - load just once

    - by user256034
    I'd like the load content of my tabs thru AJAX, but only on the first tab click. Now the tabs gets loaded every time I click on any tab. Is this possible ? My html <div id="tabContainer"> <ul> <li><a href="/Home/Tab1">Tab1</a></li> <li><a href="/Home/Tab2">Tab2</a></li> <li><a href="/Home/Tab3">Tab3</a></li> </ul> </div> EDIT I cannot use the Cache option,because the content in the tabs may change..

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  • Is it possible to stream a file to and from servers without holding the data in ram?

    - by Chris Denman
    Hi everyone! PHP question (new to PHP after 10 years of Perl, arrggghhh!). I have a 100mb file that I want to send to another server. I have managed to read the file in and "post" it without curl (cannot use curl for this app). Everything is working fine on smaller files. However, with the larger files, PHP complains about not being able to allocate memory. Is there a way to open a file, line by line, and send it as a post ALSO line by line? This way nothing is held in ram thus preventing my errors and getting around strict limitations. Chris

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  • Can Box Layout accept size of included elements?

    - by Roman
    I used myPanel.setLayout(new BoxLayout(myPanel, BoxLayout.Y_AXIS)); to order panels vertically (one under another one). But myPanel defined in the shown way change the included panel. In more details, it tries to set the same hight and width for the included panels. Can it be changed? Can BoxLayout adopt size of the included elements?

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  • does it makes sense to use int instead of char or nvarchar for a discriminator column if I'm using i

    - by Omu
    I have something like this: create table account ( id int identity(1,1) primary key, usertype char(1) check(usertype in ('a', 'b')) not null, unique(id, usertype) ) create table auser ( id int primary key, usertype char(1) check(usertype = 'a') not null, foreign key (id, usertype) references account(id, usertype) ) create table buser ( ... same just with b ) the question is: if I'm going to use int instead of char(1), does it going to work faster/better ?

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