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• Does UIActivityIndicator require manual threading on iPhone

  - by Akusete

  I am running creating an iPhone application which performs a costly operation and I wanted to create an activityIndicator to let the user know the application has not frozen. The operation is performed entirely in one event call... so there is no chance for the UI framework to receive control to actually display and animate this indicator. The sample apps which use the UIActivityIndicator (or any other similar animation) start and stop the animation in different events, triggered separately at different stages of the program. Do I need to manually create a separate thread to run my operation in, or is there already default support for this kind of behavior?

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• Is there a way to avoid IE7 quirks mode while rendering XML + CSS?

  - by Steven Huwig

  I've got some DocBook documentation styled with a CSS xml-stylesheet declaration. It looks great in Firefox, but IE7 doesn't seem to understand the CSS child selectors (e.g. section > title { ... }). I think this is because IE is running in quirks mode to render this XML, and older versions of IE didn't support that CSS syntax at all. The pages I found on the web all seem to focus on HTML and XHTML doctypes and how IE will behave given various permutations of these values. I couldn't find any information about straight XML + CSS. Worse yet, it seems that random XML documents always end up in quirks mode, no matter what format or stylesheet directives they have. Is XML rendering in IE doomed to be IE5.5 compatible? Will I really have to rewrite my CSS?

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• Where are the really high quality and complex Swing components?

  - by jouhni

  Looking at Swing, I have the feeling that it comes with many useful and reasonable atomic components in its core. And when I look at the Web there are hundrets of quickly plugged together components (among them many date/time pickers, pimped lists and tables), which have in common that I could easily write them on my own, if I needed them. When I build big software and come to the point where I need a domain-specific component which is really big, I mostly come to the point where I have to write it on my own, which, due to the point that they are not just plugged together lists and tables, isn't done qickly. So, the question is, why are there no Swing component galleries which contain more than just customized date/time pickers or lists with added tree support. Where are the components which really raise the level of abstraction, or are in best case domain-specific?

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• Video with transparent background on page above image background.

  - by fl00r

  Hi! I want to embed some video into my HTML page. As background I want to use big picture. And above it I want to insert loop video with (i.e.) walking man. So, can I embed video (without flash and any player controls) in page? Can I decode video with transparent background? Is there any codecs which support transparent background (alpha-channel)? Now I see this solutions: Making flash (that I don't want to use) Create gif animation (and it will be big file size and quite bad quality)

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• Flex 3.0 Drag and Drop

  - by C-Man

  Hi all! I have encountered a problem in a Flex application. I have implemented drag and drop support from a List to a Canvas, and I DragManagers doDrag() - with.a proxy-image. In my custom DragDrop event handler, i place a new item on the Canvas. I use the event.localX/localY to position the new item. It is working ok, but the problem is that I want the "new" image to appear exactly where the proxy-image is when i release the mouse button (x/y -wise). Can I somehow get the proxys X,Y location. I thought that DragManager would have a reference to it but I can´t find it. Thanks /C

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• I am looking for an actual functional web browser type control for .NET, maybe a C++ LIBRARY#$??$?

  - by Joshua

  I am trying to emulate a web browser in order to execute JavaScript code and then parse the DOM. The System.Windows.Forms.WebBrowser object does not give me the functionality I need. It let's me set the headers, but you cannot set the proxy or clear cookies. Well you can, but it is not ideal and messes with IE's settings. I've been extending the WebBrowser control pinvoking native windows functions so far, but it is really one hack on top of another. I can mess with the proxy and also clear cookies and such, but this control has its issues as I mentioned. I found something called WebKit .NET (http://webkitdotnet.sourceforge.net/), but I don't see support for setting proxies or cookie manipulation. Can someone recommend a c++/.NET/whatever library to do this: Basically tell me what I need to do to get an interface to similar this in .NET: string FetchBrowserParsedHtml(Uri url, WebProxy p, int timeoutSeconds, byte[] headers, byte[] postdata); void ClearCookies(); I am not responsible for my actions.

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• What effect does static const have on a namespace member

  - by user144182

  namespace MyNamespace { static const double GasConstant = 1.987; Class MyClass { // constructors, methods, etc. }; }; I previously had GasConstant declared within the MyClass declaration (and had a separate definition in the source file since C++ does not support const initialization of non-integral types). I however need to access it from other files and also logically it seems like it should reside at the namespace level. My questions is, what effect does static const have in this case? Clearly const means I can't assign a new value to GasConstant, but what does a static member at the namespace mean. Is this similar to filescope static effect, where the member is not accessible outside of the unit?

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• Why can't QFile read from the "~" directory?

  - by hurikhan77

  I've tried the following short example to find out about a bug in a bigger program I am working on. It looks like QFile doesn't support unix (or the shell's) notation for the home directory: #include <QFile> #include <QDebug> int main() { QFile f("~/.vimrc"); if (f.open(QIODevice::ReadOnly)) { qDebug() << f.readAll(); f.close(); } else { qDebug() << f.error(); } } As soon as I replace the "~" with my real home directory path, it works. Is there an easy workaround - some setting to enable? Or do I have to go the "ugly" way and ask QDir for the home directory of the current user and prepend that manually to each path?

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• What coding standards do you follow?

  - by Mark Szymanski

  I was just curious what coding standards people followed. I for one use the following: Brackets ALWAYS go on the next line. For instance: int main() { //Blah... } I never use code folding. (Yes my IDE's do support it (Xcode and Eclipse). Put related functions/methods single-spaced, otherwise double space. Here is an example: int foo = 0; printf("%d",foo); those are related while these are not: printf("Hello, World!"); return(0); I don't put else statements on the same line as the closing bracket for the preceding if statement. Most of the time in Java if a program needs multiple try catch statements I will just put the whole thing in one try catch.

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• Sorting by key > 10 integer sequences. with thrust

  - by smilingbuddha

  I want to perform a sort_by_key where I have a single key-sequence and multiple value sequences. One usually performs this with sort_by_key( key, key + N, make_zip_iterator( make_tuple(x1 , x2 , ...) ) ) However I want to perform a sort with 10 sequences each of length N. Thrust does not support tuples of size = 10. So is there a way around this ? Of course one can keep a separate copy of the key vector and perform sorts on bunches of 10 sequences. But I would like to do everything in a single call.

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• How to obtain specific Excel object library without the corresponding Office version installed.

  - by james-h-l

  I am developing a Excel automation app that read and write to Excel spreadsheet. I have Office 2007 installed on my machine. I therefore can reference the Excel 12.0 Object Library and the Excel 5.0 Object Library. I don't want to use Excel 5.0 because it's really quite old and poorly documented. Therefore I'm referencing Excel 12.0. However the target machine have Office 2003 installed and therefore only have Excel 11.0. So when I compile my program it crashes on the target machine since the referenced library are different. I was wondering is there a way I could obtain the Excel 11.0 without installing Office 03? I tried to find answers from msdn and microsoft support page but couldn't find anything? This is quite strange since it could also happen in the future where developers has newer editions of Office than clients?

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• What's the best way to cancel an asynchronous WCF request?

  - by Pwninstein

  (Assuming a WCF method called "MyFunction") Currently, to support canceling a WCF request, I'm using the BeginMyFunction/EndMyFunction methods generated by svcutil (and handling an isCanceled flag when dispatching the results to the main thread). I'd like to use the MyFunctionAsync method (and hooking into MyFunctionAsyncCompleted event instead) for async calls instead of Begin/End. What is the best/supported way to handle canceling WCF requests if using MyFunctionAsyncCompleted, and still ensuring that the event doesn't get fired on a page that's no longer loaded (i.e. page navigation within a frame). Thanks!

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• getAssetFileDescriptor from ZipResourceFile merges all mp3 in mediaplayer SOLVED

  - by Jordi

  I've a program with an Expansion file that stores 4 mp3 in a obb file (zip without compression). I can retrieve the data, but instead of taking the audio file i asked for, it merges ALL audio files in the same AssetFileDescriptor. ---SOLVED--- with the fixes Support class public AssetFileDescriptor getaudio(){ ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(c,21,21); AssetFileDescriptor afd=null; if(take==1) { afd = expansionFile.getAssetFileDescriptor("file01.mp3"); }else if(take==2 { afd = expansionFile.getAssetFileDescriptor("file02.mp3"); } //more els eif ............ return afd; } In the MediaPlayer class AssetFileDescriptor fd = Llistat.getInstance().getAudio(); mPlayer.setDataSource(fd.getFileDescriptor(), fd.getStartOffset(),fd.getLength()); mPlayer.prepare(); fd.close(); My problem was that i directly was returning and using a FileDescriptor, while i was needing the AssetFileDescriptor to take its StartOffset and Length.

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• Vim or Emacs for software development

  - by Justin

  I'm not trying to start any wars here, just get some good info. I'm getting a little exhausted using numerous IDE's for development (VS, XCode, Eclipse/Netbeans, and TextMate) and am looking for a replacement I can use on all the different machines I interact with. What are some of the pros of Vim/Emacs for things like Languages supported Syntax highlighting (for things such as c, objc-c, c#, java, python, haskell, html, javascript, xml etc...) Code completion Code folding Working with a directory of files (like have a solution/project opened) Possible debugger support What are some of the main things you like about (Emacs/Vim, and please no flames only what you really like) Thanks =) *(yes.. I have scoured the net reading this vs that etc. but I'd like more of a 'why you love it' vs 'this is better than that because...')

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• Manual stack backtrace on Windows mobile (SEH)

  - by caahab

  Following situation: I'm developing an windows mobile application using the sdk 6. Target machine is a nautiz x7. To improve the error reporting I want to catch the structured exceptions (SEH) and do a stack backtrace to store some information for analysis. So far I have the information where the exception was thrown (windows core.dll) and I can backtrace the return adresses thru the stack. But what I want to know is, which instruction in my code caused the exception? Does anyone know how to use the available exception and context information to get the appropriate function/instruction address? Unfortunately windows mobile 6 sdk for pocketpc does not support all the helper functions to do stackwalks or mini dumps.

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• Does ActiveState PerlApp have a problem binding ico files as "Bound Files"

  - by Lozzer

  I posted this question at ActiveState but got no reply from support or in a discussion forum. Here is probably better. I'm a long time user of PerlApp (ver. 8.2.1 Build 292072) and I have experienced very few problems. But just recently, I've been creating a new Tkx app and hit a problem. Tkx allows ico files to be used in the application (replacing the Tk icon) and this works perfectly in development. But, when I have tried binding my ico file in "Bound Files" of PerlApp it refuses to work and the only way to get my app to run is by putting the original ico file in the same folder as the exe. I have tried changing the name of the "Icon Sources" ico file, removing the "Icon Sources" ico file completely, but the "Bound Files" ico file refuses to be bound. Any suggestions?

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• Standard Workflow when working with JPA

  - by jschoen

  I am currently trying to wrap my head around working with JPA. I can't help but feel like I am missing something or doing it the wrong way. It just seems forced so far. What I think I know so far is that their are couple of ways to work with JPA and tools to support this. You can do everything in Java using annotations, and let JPA (whatever implementation you decide to use) create your schema and update it when changes are made. You can use a tool to reverse engineer you database and generate the entity classes for you. When the schema is updated you have to regenerate these classes, or manually update them. There seems to be drawbacks to both, and benefits to both (as with all things). My question is in an ideal situation what is the standard workflow with JPA? Most schemas will require updates during the maintenance phase and especially during the development phase, so how is this handled?

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• Can I configure AutoMapper to read from custom column names when mapping from IDataReader?

  - by rohancragg

  Psuedo code for mapping configuration (as below) is not possible since the lambda only lets us access Type IDataReader, wheras when actually mapping, AutoMapper will reach into each "cell" of each IDataRecord while IDataReader.Read() == true: var mappingConfig = Mapper.CreateMap<IDataReader, IEnumerable<MyDTO>>(); mappingConfig.ForMember( destination => destination.???, options => options.MapFrom(source => source.???)); Can anyone think of a way to do this using AutoMapper configuration at runtime or just some other dynamic approach that meets the requirement below. The requirement is to support any incoming IDataReader which may have column names that don't match the property names of MyDTO and there is no naming convention I can rely on. Instead we'll ask the user at runtime to cross-reference the expected column names with the actual column names found in the IDataReader via IDataReader.GetSchemaTable().

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• Should I use Enumeration or Class stereotype in UML to represent a type directory table?

  - by Ivan

  Let's take 2 UML class model entities: One represents an actual Order and another represents an Orede Type. Any Order corresponds to one Type. A 2-way-naviglabe many Orders to one Type relation is meant. Order Type instances are, for example, "Request availability", "Request price", "Preorder", "Buy", "Cancel", "Request support", etc. Order Types are to be addable and editable in the resulting application. Should I model Order Type as Class or as Enumeration? From the data perspective I can't see the difference actually.

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• Why shouldnt i use flash again?

  - by acidzombie24

  I heard many times i should avoid flash for my website. Yet no one has told me a good reason. I searched for reasons and i see many that are not true (such as text in flash are not indexable by search engines) or may not necessarily be true or significant enough (eating more bandwidth. Would a JS equivalent be bigger or smaller?). My site uses flash to playback sound (m4a). I dont have to worry about indexing, the back button not working, etc. But i have feeling there may be other reasons. What are reasons i shouldnt use flash on my website. I'll note one, the fact iphone/itouch and mobile devices does not support it. Not a big deal for most sites and is obvious. What are reason to avoid flash on my site?

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• Should app using VCL migrate?

  - by Fdr

  Is VCL dead, or does it have a future as a GUI library? As CLX ended, is there any chance for cross-platform support in future releases? I've had to do some work with legacy app that uses Borland's VCL(BCB6). Now that new features have to be implemented, it's necessary to revalue alternatives. Whether to stick with VCL or migrate to some other library/framework. I've never read much what's happening in the field Embarcadero(Borland) tools. At least there seems to be only few VCL tagged questions here in SO and no much luck with google either.

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• Clear Select options when selecting one field while using multiple forms on same page

  - by Nizam

  Hi all, I have a situation where the second select list option is generated from the first select list selected option. Like when we select Country corresponding states are generated in next select list. In my case I am having multiple forms on single page which are same. Can anyone let me know how to implement it on multiple forms. I tried the following code but it didn't work $(".country").change(function(){ $.get("sample.php?val=" + $(this).val(), function(data){ $(this).parent().next().children('.state').children('option').remove(); $(this).parent().next().children('.state').append(data); }); Waiting for your support thanks in advance

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• SQLite REGEXP initializer not working in production on Heroku

  - by morcutt

  I am using this to create a REGEXP in SQLite with rails because SQLite does not support REGEXP. When running this app on Heroku rather than the localhost it does not work. Is the initializer not being run when the app launches? The log files are providing .. 2011-03-04T18:35:36-08:00 app[web.1]: ActiveRecord::StatementInvalid (PGError: ERROR: syntax error at or near "REGEXP" 2011-03-04T18:35:36-08:00 app[web.1]: LINE 1: ... "posts".* FROM "posts" WHERE (message REGEXP '(?... 2011-03-04T18:35:36-08:00 app[web.1]: ^ 2011-03-04T18:35:36-08:00 app[web.1]: : SELECT "posts".* FROM "posts" WHERE (message REGEXP '(?:^|\s+)/(\w+)' and user_id = 1)): Which are similar to what the development files produced if I had deleted the implemented code. It seems as though the REGEXP initializer is not being run at startup.

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• disabling transactional fixtures in Rspec has no effect

  - by Dia

  Due to a legacy database I'm using, I'm stuck with MySQL using MyISAM, which means my tables don't support transactions. This is causing the tests to fail, since table data generated (I'm using factory_girl for fixtures) by the tests are not reverted for each scenario. I discovered that Rspec exposes the config.use_transactional_fixtures config setting in spec_helper.rb. which is set to true by default. When I set it to false, I don't see any effect on my tests; they still fail due to duplicate records. Isn't that setting supposed to automatically unroll any changes made to the DB? Or am I supposed to do that manually?

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• Node.js and wss://

  - by CNelson

  I'm looking to start using javascript on the server, most likely with node.js, as well as use websockets to communicate with clients. However, there doesn't seem to be a lot of information about encrypted websocket communication using TLS and the wss:// handler. In fact the only server that I've seen explicitly support wss:// is Kaazing. This TODO is the only reference I've been able to find in the various node implementations. Am I missing something or are the websocket js servers not ready for encrypted communication yet? Another option could be using something like lighttpd or apache to proxy to a node listener, has anyone had success there?

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