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Articles indexed in March 2010

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  • Flipping View transition becomes clunky when using UIPickerViews with a large number of elements

    - by user302246
    I have a very simple app created with the Utility Application project template on XCode. My MainView has two UIPickerView components and two buttons. The FlipSideView has another UIPickerView. The pickers on the main view each have 4 segments and each segment has 8 rows. The picker on the flip side has just 1 segment with 8 rows. All rows on all pickers are just text. With just this setup, pressing the button to flip the view back and forth displays a noticeable delay before the animation actually starts, and then the animation actually seems to go faster than what it should, like it's trying to make up for the lost time. I removed the pickers in interface builder and loaded the app on the phone and the animation now seems natural. I also tried just one picker (the flipside one) and things still seem normal. So my current theory is that the number of objects involved in the main view is the cause. The thing is that I don't think it's that many (4 x 8 x 2 = 64), but I could be completely wrong. This is pretty much my first app so maybe I'm just doing something grossly wrong, or maybe the phone is has a lot more limited processing than I thought. I am thinking of creating the picker views with pickerView:viewForRow:forComponent:reusingView: to see if this hopefully performs better, but I'm not sure if this is just a waste of time. Any suggestions? Thanks Ruy P.S.: Testing on a 3G phone on 3.1.2

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  • Multiple Tables or Multiple Schema

    - by Yan Cheng CHEOK
    http://stackoverflow.com/questions/1152405/postgresql-is-better-using-multiple-databases-with-1-schema-each-or-1-database I am new in schema concept for PostgreSQL. For the above mentioned scenario, I was wondering Why don't we use a single database (with default schema named public) Why don't we have a single table, to store multiple users row? Other tables which hold users related information, with foreign key point to the user table. Can anyone provide me a real case scenario, which single database, multiple schema will be extremely useful, and can't solve by conventional single database, single schema.

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  • Why is -[UISwitch superlayer] being called?

    - by Jonathan Sterling
    I've got sort of a crazy thing going on where I have an NSProxy subclass standing in for a UISwitch. Messages sent to the proxy are forwarded to the switch. Please don't comment on whether or not this is a good design, because in context, it makes sense as an incredibly cool thing. The dealio is that when I try to add this object as an accessory view to a UITableViewCell, I get the following crash: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[UISwitch superlayer]: unrecognized selector sent to instance 0x5889740' Yes, I could just set the proxy's target as the accessory view, but then I would have to keep track of the proxy so that I could release it at the right time. So, what I really want is to be able to have the proxy retained by the table cell, and released when it is removed from the view just like a normal accessory view. So, why is -[UISwitch superlayer] (a method which does not exist) being called, and how do I save the world?

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  • Adding UIBarButtonItem to UINav..Controller

    - by mlecho
    i am not sure what i am missing here. I Have a custom UINavigationController and i am trying to add a persistant UIBarButtonItem to the bar. -(void)viewDidLoad { self.navigationBar.barStyle = UIBarStyleBlack; UIBarButtonItem *bbi = [[UIBarButtonItem alloc] initWithTitle:@"Nope..." style:UIBarButtonItemStyleBordered target:self action:@selector(goBack:)]; self.navigationItem.leftBarButtonItem =bbi; [bbi release]; } -(void)goBack:(id)sender { NSLog(@"go back now"); } what am i missing here? - BTW, i do not want to/ will not use IB.

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  • Does PHP session conflict with Share-Nothing-Architecture?

    - by Morgan Cheng
    When I first meet PHP, I'm amazed by the idea Sharing-Nothing-Architecture. I once in a project whose scalaiblity suffers from sharing data among different HTTP requests. However, as I proceed my PHP learning. I found that PHP has sessions. This looks conflict with the idea of sharing nothing. So, PHP session is just invented to make counterpart technology of ASP/ASP.NET/J2EE? Should high scalable web sites use PHP session?

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  • Creating Excel Files with # in Column Name

    - by Superdumbell
    I'm having problem creating Excel files using Jet. When I create a table and give it a Column name as CreateTable [Sheet1] ([ColumnName#] String) It replaces the header column with ColumnName. Is there a way I can make excel give the column headers a name with out any conflict in what characters I can have in it? Are there any escape characters that I can use in the column names? Is there a cheap(~$50)/free .NET library that would give me better control over the Excel file that would allow me to create both XLS and XLSX files with out having excel installed? Basically what I'm trying to accomplish is having a DataTable get dumped into an Excel File and have the Column names appear just as they do in the in the DateTable.

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  • DMProcessConfigXML fails while loading dlls on the windows mobile 6.5.

    - by jieun
    What I want to do is uninstall my program on the device Programmatically. So I trying to use DMProcessConfigXML() as this site It seems to work well on the emulator, but it didn't work on my device. Application goes exit after calling DMProcessConfigXML() without return result code. This is a part of code. after line 2, program is terminated. const wchar_t *_deleteUninstallOFficeLiteXML = L"<wap-provisioningdoc>" L" <characteristic type=\"UnInstall\">" L" <characteristic type=\"myApp\">" L" <parm name=\"uninstall\" value=\"1\"/>" L" </characteristic>" L" </characteristic>" L"</wap-provisioningdoc>"; 1. HRESULT hr = E_FAIL; 2. hr = DMProcessConfigXML(_deleteUninstallXML, CFGFLAG_PROCESS, &out); 3. if (FAILED(hr)) 4. { ... Does anyone know why this happen and how to fix?

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  • CSS child selector (>) doesn't work with IE

    - by Eric
    The following CSS works well under firefox but doesn't work under IE browser, Why? Also, how can I make only the elements, directly under the parent element, be affected by CSS? CSS: .box{font:24px;} .box>div{font:18px} .box>div>div{font:12px;} HTML: <div class="box"> level1 <div> level2 <div> level3</div> <div> level3</div> </div> <div> level2 <div> level3</div> <div> level3</div> </div> </div>

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  • ASP.NET MVC Case Studies

    - by shiju
     The below are the some of the case studies of ASP.NET MVC Jwaala - Online Banking Solution Benefits after ASP.NET MVC Replaces Ruby on Rails, Linux http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?casestudyid=4000006675 Stack Overflow - Developers See Faster Web Coding, Better Performance with Model-View-Controller http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?casestudyid=4000006676 Kelley Blue Book - Pioneer Provider of Vehicle-Pricing Information Uses Technology to Expand Reach http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?casestudyid=4000006272 

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  • Analyze your IIS Log Files - Favorite Log Parser Queries

    - by The Official Microsoft IIS Site
    The other day I was asked if I knew about a tool that would allow users to easily analyze the IIS Log Files, to process and look for specific data that could easily be automated. My recommendation was that if they were comfortable with using a SQL-like language that they should use Log Parser . Log Parser is a very powerful tool that provides a generic SQL-like language on top of many types of data like IIS Logs, Event Viewer entries, XML files, CSV files, File System and others; and it allows you...(read more)

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  • Tip#102: Did you know… How to specify tag specific formatting

    - by The Official Microsoft IIS Site
    Let’s see this with an example.  I have the following html code on my page. Now if I format the document by selecting Edit –> Format document (or Ctrl K, Ctrl D) The document becomes I want the content inside td should remain on the same line after formatting the document. Following steps would show how you can specify tag specific formatting for the Visual Studio editor Right click on the editor in an aspx file and select Formatting and Validation... (or alternatively you can go from Menu...(read more)

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  • WMI Remote connection objsWbemLocator.ConnectServer

    - by Sam
    I have an issue when connecting to remote machines using the following: Set objWMIService = objSWbemLocator.ConnectServer _ (sIP, "root\CIMV2", strUser, strPassword, "MS_409", "ntlmdomain:" + sDomain, 128) the problem is that some machines are not timing out and the process hangs. Is there a way to cancel the connect and continue with the next ip? I'm using vbscript. Thanks, Sam

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  • Realtek HD Audio playing weird with certain video formats

    - by dyasny
    Hi, I have a Gigabyte motherboard with an onboard Realtek HD sound card. The card is working perfectly everywhere, except for a single video format, where the voice is distorted, sounds as if it's been passed through a metal tube. Been googling for this, but couldn't find an answer anywhere. The movie plays fine on other systems (got Linux everywhere else), but on this one (winXP-x64-sp2) it just doesn't. Here are some details: MPC: Type: KLCP WMV File Audio: 0x000a 22050Hz mono 20Kbps [Raw Audio 0] Video: Windows Media Video 9 400x300 29.97fps 227Kbps [Raw Video 1] VLC: Codec: wmas Sample rate: 22050 Bits per sample: 16 Bitrate: 20kb/s

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  • Looking for audio-sample-managing/librarian software

    - by Fuxi
    hi all, i'm looking for a good software for managing audio samples (.wav) it should be capable of: quickly browsing through directory/file-structure (eg. cursorkeys) + autoplay waveform-vizualisation + possibility to set cursor position (for playing) possibility to create own favourite-folder-structure + quickly sort in by sample-type any recommendations? thanks

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  • Allow IExtenderProvider control to attach to controls on a UserControl

    - by Justin
    VB.NET 2.0 Framework I developed a control that implements IExtenderProvider in order to attach to controls and display a form for translating of the text of that control. This works great on regular controls on the form but the IExtenderProvider is not attaching to controls on UserControls, which makes sense. Is it possible to modify the UserControls or my IExtenderProvider control to enable it to attach to controls on a UserControl? Thanks!

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  • OpenGL ES clarifying question regarding FBOs -- sorry can't find this info anywhere else?

    - by DevDevDev
    If I instantiate an FBO without binding a rendering buffer or a texture to it, what happens when I draw to it, nothing? Do I need to associate a rendering target (renderbuffer or texture) to have an FBO do anything? What I'm trying to do is precache some buffers and then merge them later, but that doesn't seem to work at all. Ideally I'd like to do something like glBindFramebufferOES(GL_FRAMEBUFFER_OES, fbo1); // Draw some stuff to fbo1 glBindFramebufferOES(GL_FRAMEBUFFER_OES, fbo2); // Draw some stuff to fbo2 // ... // ... // glRenderFbo(fbo1); -- Not a func // Set blending, etc. etc. // glRenderFbo(fbo2); -- Not a func

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  • What is a robust jQuery Rich Text Editor with image upload capabilities?

    - by thinkswan
    I know this question has been asked countless times, but answers are mixed, so I thought I'd test the waters and see what the latest verdict is out in the development community. I need a [preferably jQuery] rich text editor plugin that simply attaches itself to <textarea> elements and supports image uploads. It doesn't need to be too advanced. Just alignment, bold, italic, styles and image support. I tried CKEditor (along with CKFinder for image uploads), but it just has too many features and is too heavy for what I need. This is going to be used for simple webpage editing.

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  • How come checkbox state is not always passed along to PHP script?

    - by George Edison
    I have an HTML form: <form action='process.php' method='post'> <input type='checkbox' name='check_box_1' /> Check me!<br> </form> Here is a section from the PHP script process.php: echo (isset($_POST['check_box_1']))?'Set':'Not set'; The output of the script when the checkbox is set is Set But when the checkbox is not set, the output is: Not set Why is this? This seems like a very poor design because my PHP script checks a number of $_POST variables to make sure they were passed along to the script. When the $_POST['check_box_1'] value is not set, then how do I know whether the script failed to pass along the value or the checkbox was just not set?

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  • Difference in performance between Stax and DOM parsing

    - by Fazal
    I have been using DOM for a long time and as such DOM parsing performance wise has been pretty good. Even when dealing with XML of about 4-7 MB the parsing has been fast. The issue we face with DOM is the memory footprint which become huge as soon as we start dealing with large XMLs. Lately I tried moving to Stax (Streaming parsers for XML) which are supposed top be second generation parsers (reading about Stax it said its the fastest parser now). When I tried stax parser for large XML for about 4MB memory footprint definitely reduced drastically but time take to parse entire XML and create java object out of it increased almost by 5 times over DOM. I used sjsxp.jar implementation of Stax. I can deuce to some extent logically that performance may not be extremely good due to streaming nature of the parser but a reduction of 5 time (e.g. DOM takes about 8 seconds to build object for this XML, whereas Stax parsing took about 40 seconds on average) is definitely not going to be acceptable. Am I missing some point here completely as I am not able to come to terms with these performance numbers

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