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• Error message: "Two different contracts have the same ConfigurationName" when downloading wsdl from

  - by rwwilden

  I get the following error message when I try to use svcutil to generate a client proxy for a xamlx file that is hosted by AppFabric beta 2: Two different contracts have the same ConfigurationName I understand the message, however, I cannot find its cause or how to fix it. I'm following the 'Introduction to Workflow Services' lab from the VS2010RC training kit. The web application has two services: SubmitApplication.xamlx and EducationScreening.xamlx. I'm not sure why but both of them have four endpoints. If I take a look via the AppFabric Dashboard in IIS Mgmt Studio: basicHttpBinding (Contract: *) (Type: Application(Default)) netNamedPipeBinding (Contract: System.ServiceModel.Activities.IWorkflowInstanceManagement) (Type: System (workflowControlEndpoint)) netNamedPipeBinding (Contract: *) (Type: Application (Default)) serviceMetadataHttpGetBinding (Contract: serviceMetadataHttpGetContract) (Type: System (serviceMetadataEndpoint)) When taking a look at the SubmitApplication.xamlx in a browser, I see the following stacktrace: [InvalidOperationException: Two different contracts have the same ConfigurationName.] System.ServiceModel.Activities.WorkflowServiceHost.CreateDescription(IDictionary`2& implementedContracts) +361 System.ServiceModel.ServiceHostBase.InitializeDescription(UriSchemeKeyedCollection baseAddresses) +174 System.ServiceModel.Activities.WorkflowServiceHost.InitializeDescription(WorkflowService serviceDefinition, UriSchemeKeyedCollection baseAddresses) +82 System.ServiceModel.Activities.WorkflowServiceHost.InitializeFromConstructor(WorkflowService serviceDefinition, Uri[] baseAddresses) +206 System.ServiceModel.Activities.Activation.WorkflowServiceHostFactory.CreateWorkflowServiceHost(WorkflowService service, Uri[] baseAddresses) +43 System.ServiceModel.Activities.Activation.WorkflowServiceHostFactory.CreateServiceHost(String constructorString, Uri[] baseAddresses) +974 System.ServiceModel.HostingManager.CreateService(String normalizedVirtualPath) +1423 System.ServiceModel.HostingManager.ActivateService(String normalizedVirtualPath) +50 System.ServiceModel.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath) +1132 [ServiceActivationException: The service '/HRApplicationServices/SubmitApplication.xamlx' cannot be activated due to an exception during compilation. The exception message is: Two different contracts have the same ConfigurationName..] System.Runtime.AsyncResult.End(IAsyncResult result) +889824 System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result) +179150 System.Web.AsyncEventExecutionStep.OnAsyncEventCompletion(IAsyncResult ar) +107 Can anyone tell me what I'm doing wrong? I haven't configured any of the bindings myself. The BasicHttpBinding is what you get by default in .NET 4 when hosting a service inside a web application. The other bindings are configured by AppFabric. I can't find their configuration anywhere. Kind regards, Ronald Wildenberg

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• How far did DevExpress get with Javascript refactoring?

  - by MattX

  Over a year ago, I remember watching one of DevExpress evangelists previewing or at least promoting rich Javascript refactoring (beyond just limited intellisense) within the Visual Studio shell, I recall part of CodeRush/DevExpress product line. I was excited. On checking today (lmgtfy) I can find only very very limited reference to it, just one small italtic line about beta in product description, no videos, no blog posts, no community buzz. Was it dropped? Vapourware? Poor implementation that they dont even promote it? With Javascript arguably the most popular programming language ever and with a VM for it on practically every machine in last 10 years, why is editor support so poor? (Compared with those for Java and C#)? You see the likes of ScottGu bragging we now have jQuery intellisense but compare this to richness of C# support in the IDE it is a joke. Someone once said since there are many style of writing Javascript a rich IDE (beyond intellisense) with refactoring support is difficult, but if several engines can interpret/compile JS with same result surely it should be hard to analysis it to support stuff like rename variable, extract method, move to another namespace (or JS minic of it), etc.. Am I wrong?

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• How to use HTTP Live Streaming protocol in iPhone SDk 3.0

  - by Pugal Devan

  Hi Guys, i have developed on IPhone application and submitted to App store. But my application got rejected based on below criteria. Thank you for submitting your yyyyyyyy application. We have reviewed your application and have determined that it cannot be posted to the App Store at this time because it is not using the HTTP Live Streaming protocol to broadcast streaming video. HTTP Live Streaming is required when streaming video feeds over the cellular network, in order to have an optimal user experience and utilize cellular best practices. This protocol automatically determines bandwidth available to users and adjusts the bandwidth appropriately, even as bandwidth streams change. This allows you the flexibility to have as many streams as you like, as long as 64 kbps is set as the baseline feed. In my apps i have to stream prerecorded m4v and mp3 files from my server. I used MPMoviePlayerController to stream and play those videos / audio. How to implement the HTTP Live Streaming Protocol in my apps? Also can i get some sample code? Thanks in advance!

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• Ideas for OpenSource CMS in ASP.NET MVC

  - by rajesh pillai

  I am in the process of collecting ideas for building an opensource CMS based on ASP.net framework. I have choosen ASP.NET MVC with Jquery as the tool to develop this. I have made this as community wiki. Background: Most of the good CMS that is available is built on PHP, though off late CMS built on ASP.net framework seems to be cropping up. I would like to collect ideas/suggestion/expectations from an opensource CMS system for ASP.net platform. I am looking for expectation from technology and features that you wish could find in a modern CMS and any other thoughts/ideas that comes to your mind. Your input would be of great help in this direction. Meanwhile I am also reviewing many opensource CMS system built on ASP.net as well as MS Office Sharepoint to get ideas and I would update my findings here for your reference. The following are some of the opensource CMS/BlogEngines that I am in the process of reviewing. -Oxite (ASP.net MVC) : This is the new kid on the block -Wordpress -BlogEngine.net -Umbraco Some of the features that I can think of is noted below Simplified content creation Support Multiple content author Metadata feature Workflow engine Simplified deployment List based contents (sharepoint like) Customizable URL's Support content Caching Roles (contenauthor, contentpublisher etc) Support different types of content (like html, txt, document, image, videos) Skinnable (support extensible themes) Localization & Globalization Unlimited nesting of categories Readymade template for blog, forums,survey. Good documentation You can add your points or add some depth to any of the above feature.

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• Need help with artificial neural network

  - by deckard cain

  I have an input data for neural network that consists of 2 vectors with 200 elements, that i got from some program for generating signals. So it is actually 2x200 input to my nnet. As target data, i have one 1x200 vector that i also got from the same program. That is my training data set. I gather as much of those sets as i want so i transfer them to matlab and save them as, for example, set1, set2,.... When i am creating neural net, using newfit function (backropagation algorithm and everyhting else is set by default because i am kind of unexperianced with neural nets so i will have to experiment) i'm creating it using set1 only for example. Then, when i am to train neural net i train it for set1 then load set2 and train for it and so on. so its like this function net = create_fit_net(inputs,targets) numHiddenNeurons = 20; net = newfit(inputs,targets,numHiddenNeurons); net=train(net,inputs,targets); load set2; net=train(net,inputs,targets); load set3; net=train(net,inputs,targets); load set4; net=train(net,inputs,targets); i am using 4 sets of data here and all sets have variables of same name and size. My quesion is, am i doing this the right way, because, when doing simulation in some other m file, i am getting bad results, and every time i get different results. Does it matter if i create network with one set and then train with others too, and does it matter what set do i use to train network 1st? Also, i am confused about the amount of neurons to use (im using in the example 20 but actually i tried 1, 10, 30, 50, 100 200 and even 300 and i get nothing). If you have any suggestions, i'd be glad to take them into consideration. Any help is welcome. thanks in advance

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• Flex HTMLLoader component not raising mouseDown events for all mouse clicks

  - by shane

  I have built a Air 2/Flex 4 kiosk application with Flash Builder 4. Currently I am implementing a touch screen browser to enable users to navigate company training videos. In an attempt to improve the usability of the website on the touchscreen I have placed the HTML component in an adaption of Doug McCune's DragScrollingCanvas (updated to use the flex 4 'Scroller' component) to allow users to scroll the webpage by dragging their finger across the screen. The mouseDown event is used to start scrolling the viewport. In addition the webpage was modified to disable text selection with the following css: html { -webkit-user-select: none; cursor: default; } The problem I face is that the HTMLLoader component only fires a mouseDown if a link/input/button on the webpage is clicked, not when the background or any text is clicked. In addition if I remove the custom css the mouseDown event will not fire when text is being selected, but will if previously highlighted text is clicked. As an alternative I also tried adding a group container with the same dimensions as the HTMLLoader to detect the mouseDown events (so that the group container and HTMLLoader have the same Dragable parent container) and was able to capture mouseDown events and scroll the viewport as expected. However as the mouse event is handled by the group container, I am now unable to navigate the webpage. Does anybody know why the HTMLLoader component is not raising mouseDown events for all mouse clicks?

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• signalR groups - connecting/disconnecting and sending - am I missing something?

  - by Terry_Brown

  very new to signalR, and have rolled up a very simple app that will take questions for moderation at conferences (felt like a straight forward use case) I have 2 hubs at the moment: - Question (for asking questions) - Speaker (these should receive questions and allow moderation, but that will come later) Solution lives at https://github.com/terrybrown/InterASK After watching a video (by David Fowler/Damian Edwards) (http://channel9.msdn.com/Shows/Web+Camps+TV/Damian-Edwards-and-David-Fowler-Demonstrate-SignalR) and another that I can't find the URL for atm, I thought I'd go with 'groups' as the concept to keep messages flowing to the right people. I implemented IConnected, IDisconnect as I'd seen in one of the videos, and upon debugging I can see Connect fire (and on reload I can see disconnect fire), but it seems nothing I do adds a person to a group. The signalR documentation suggests "Groups are not persisted on the server so applications are responsible for keeping track of what connections are in what groups so things like group count can be achieved" which I guess is telling me that I need to keep some method (static or otherwise?) of tracking who is in a group? Certainly I don't seem able to send to groups currently, though I have no problem distributing to anyone currently connected to the app and implementing the same JS method (2 machines on the same page). I suspect I'm just missing something - I read a few of the other questions on here, but none of them seem to mention IConnected/IDisconnect, which tells me these are either new (and nobody is using them) or that they're old (and nobody is using them). I know this could be considered a subjective question, though what I'm looking for is just a simple means of managing the groups so that I can do what I want to - send a question from one hub, and have people connected to a different hub receive it - groups felt the cleanest solution for this? Many thanks folks. Terry

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• People not respecting good practices at workplace

  - by VexXtreme

  Hi There are some major issues in my company regarding practices, procedures and methodologies. First of all, we're a small firm and there are only 3-4 developers, one of which is our boss who isn't really a programmer, he just chimes in now and then and tries to do code some simple things. The biggest problems are: Major cowboy coding and lack of methodologies. I've tried explaining to everyone the benefits of TDD and unit testing, but I only got weird looks as if I'm talking nonsense. Even the boss gave me the reaction along the lines of "why do we need that? it's just unnecessary overhead and a waste of time". Nobody uses design patterns. I have to tell people not to write business logic in code behind, I have to remind them not to hardcode concrete implementations and dependencies into classes and cetera. I often feel like a nazi because of this and people think I'm enforcing unnecessary policies and use of design patterns. The biggest problem of all is that people don't even respect common sense security policies. I've noticed that college students who work on tech support use our continuous integration and source control server as a dump to store their music, videos, series they download from torrents and so on. You can imagine the horror when I realized that most of the partition reserved for source control backups was used by entire seasons of TV series and movies. Our development server isn't even connected to an UPS and surge protection. It's just plugged straight into the wall outlet. I asked the boss to buy surge protection, but he said it's unnecessary. All in all, I like working here because the atmosphere is very relaxed, money is good and we're all like a family (so don't advise me to quit), but I simply don't know how to explain to people that they need to stick to some standards and good practices in IT industry and that they can't behave so irresponsibly. Thanks for the advice

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• split video (avi/h264) on keyframe

  - by m.sr

  Hallo. I have a big video file. ffmpeg, tcprobe and other tool say, it is an h264-stream in an AVI-container. Now i'd like to cut out small chunks form the video. Problem: The index of the video seam corrupted/destroyed. I kind of fixed this via mplayer -forceidx -saveidx <IndexFile> <BigVideoFile>. The Problem here is, that I'm now stuck with mplayer/mencoder which can use this index file via -loadidx <IndexFile>. I have tried correcting the index like described in man aviindex (mplayer -frames 0 -saveidx mpidx broken.avi ; aviindex -i mpidx -o tcindex ; avimerge -x tcindex -i broken.avi -o fixed.avi), but this didn't fix my video - meaning that most tools i've tested couldn't search in the video file. Problem: I sut out parts of the video via following command: mencoder -loadidx in.idx -ss 8578 -endpos 20 -oac faac -ovc x264 -sws 9 -lavfopts format=mp4 -x264encopts <LotsOfOpts> -of lavf -vf scale=800:-10,harddup in.avi -o out.mp4. Now here the problem is, that some videos are corrupted at the beginning. I think this is because the fact, that i do not necessarily cut at keyframe. Questions: What is the best way to fix the index of an avi "inline" so that every tool can again work as expected with it? How can i split at the keyframes? Is there an mencoder-option for this? Are Keyframes coming in a frequency? How to find out this frequency? (So with a bit of math it should be possible to calculate the next keyframe and cut there) Is ther perhaps some completely other way to split this movie? Doing it by hand is no option, i've to cut out 1000+ chunks ... Thanks a lot!

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• When am I ready for contracting work?

  - by Kirk Broadhurst

  What skills are required to work on a temp / contracting basis, and how does a developer know when they are ready to work in these circumstances? I have some colleagues who are suggesting contracting work is 'the way to go'; the pay is significantly better. It appears that when a permanent position pays (X times $10k) per year, the corresponding contract position pays almost $X per hour - which is close to twice as much. I look forward to doing this type of work as an experienced expert, but worry that by doing so right now I'd be turning away learning and development opportunities. My assumptions about contract work are the following: less / zero money invested on training and development less concern for job satisfaction and learning ("they won't be here in 12 months") possibly less concern about the overall quality of the project ("we won't be here in 12 months") There are similar questions on stack overflow at the moment but what I've really looking for is: What does the developer give up by moving to contract work? Is it preferable to have structured learning in a permanent position rather than seat-of-the-pants learning in a contract position? What skill leve should the contractor have before making the move? Is there still the same kind of growth in contracting that there is in permanent positions? Rightly or wrongly, I see this as a choice between $ (contracting) and learning / development (permanent). Is this fair?

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• Implementing Naïve Bayes algorithm in Java - Need some guidance

  - by techventure

  hello stackflow people As a School assignment i'm required to implement Naïve Bayes algorithm which i am intending to do in Java. In trying to understand how its done, i've read the book "Data Mining - Practical Machine Learning Tools and Techniques" which has a section on this topic but am still unsure on some primary points that are blocking my progress. Since i'm seeking guidance not solution in here, i'll tell you guys what i thinking in my head, what i think is the correct approach and in return ask for correction/guidance which will very much be appreciated. please note that i am an absolute beginner on Naïve Bayes algorithm, Data mining and in general programming so you might see stupid comments/calculations below: The training data set i'm given has 4 attributes/features that are numeric and normalized(in range[0 1]) using Weka (no missing values)and one nominal class(yes/no) 1) The data coming from a csv file is numeric HENCE * Given the attributes are numeric i use PDF (probability density function) formula. + To calculate the PDF in java i first separate the attributes based on whether they're in class yes or class no and hold them into different array (array class yes and array class no) + Then calculate the mean(sum of the values in row / number of values in that row) and standard divination for each of the 4 attributes (columns) of each class + Now to find PDF of a given value(n) i do (n-mean)^2/(2*SD^2), + Then to find P( yes | E) and P( no | E) i multiply the PDF value of all 4 given attributes and compare which is larger, which indicates the class it belongs to In temrs of Java, i'm using ArrayList of ArrayList and Double to store the attribute values. lastly i'm unsure how to to get new data? Should i ask for input file (like csv) or command prompt and ask for 4 values? I'll stop here for now (do have more questions) but I'm worried this won't get any responses given how long its got. I will really appreciate for those that give their time reading my problems and comment.

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• Best Youtube embed player sizes?

  - by Xeoncross

  I use tumblr to share videos and, unfortunately, when re-posting a video to your tumblelog it uses the embed code at 400x336px. This is neither widescreen nor very large. So I'm trying to set the player to better size and I'm finding that the youtube player really comes in many sizes. For example, when copying the embed code for and HD video I get the sizes 560x340, 640x385, and 853x505. Then when I look at the embed code for a SD video I get the sizes 425x344, 480x385, and 640x505. I was having the best luck with setting the player to 640 x 505 as it was large enough for HD and perfect for SD. print str_replace( array('400', '336'), array('640', '505'), $video_player_html); Has anyone dealt with trying to find a good standard embed size for a site? One thing that would make this a lot easier is to know whether the video was HD or not - however, that info is not provided in the embed code. I guess I am actually more interested in knowing the right ratio (or specific size) to use that works the best for youtube's mixed content.

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• Why does Facebook iOS dialog for feed publish disappear after login?

  - by Mason G. Zhwiti

  I'm trying to use the Facebook iOS "feed" dialog call to allow my app's user to share something on their Facebook wall. When the facebook app is not installed, it attempts to let them authenticate within the app (presumably using a web view). The issue is that this dialog just disappears once they authenticate. I was expecting the web view to return to the "feed" sharing view. How do I detect that they authenticated so that I can re-open the feed dialog? I've added fbDidLogin to my app delegate, but it's not being called. (I wasn't sure if this would normally be called or not, but I read several people recommending this.) SBJSON *jsonWriter = [SBJSON new]; // The action links to be shown with the post in the feed NSArray* actionLinks = [NSArray arrayWithObjects:[NSDictionary dictionaryWithObjectsAndKeys: @"More Videos",@"name",@"http://www.example.com/",@"link", nil], nil]; NSString *actionLinksStr = [jsonWriter stringWithObject:actionLinks]; NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys: @"Test Caption", @"caption", @"Test Description", @"description", @"https://s3.amazonaws.com/example/images/test.png", @"source", self.video.blogLink, @"link", @"01234567890123", @"app_id", actionLinksStr, @"actions", nil]; [delegate facebook].sessionDelegate = delegate; [[delegate facebook] dialog:@"feed" andParams:params andDelegate:self];

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• Cookies not present after using XMLHttpRequest

  - by Joe B

  I'm trying to make a bookmarklet to download videos off of YouTube, but I've come across a little problem. To detect the highest quality video available, I use a sort of brute force method, in which I make requests using the XMLHttpRequest object until a 404 isn't returned (I can't do it until a 200 ok is returned because YouTube redirects to a different server if the video is available, and the cross-domain policy won't allow me to access any of that data). Once a working URL is found, I simply set window.location to the URL and the download should start, right? Wrong. A request is made, but for reasons unknown to me, the cookies are stripped and YouTube returns a 403 access denied. This does not happen if the XML requests aren't made before it, i.e. if I just set the window.location to the URL everything works fine, it's when I do the XMLHttpRequest that the cookies aren't sent. It's hard to explain so here's the script: var formats = ["37", "22", "35", "34", "18", ""]; var url = "/get_video?video_id=" + yt.getConfig('SWF_ARGS')['video_id'] + "&t=" + (unescape(yt.getConfig('SWF_ARGS')['t'])) + "&fmt="; for (var i = 0; i < formats.length; i++) { xmlhttp = new XMLHttpRequest; xmlhttp.open("HEAD", url + formats[i], false); xmlhttp.send(null); if (xmlhttp.status != 404) { document.location = url + formats[i]; break } } That script does not send the cookies after setting the document.location and thus does not work. However, simply doing this: document.location = /get_video?video_id=" + yt.getConfig('SWF_ARGS')['video_id'] + "&t=" + (unescape(yt.getConfig('SWF_ARGS')['t'])) DOES send the cookies along with the request, and does work. The only downside is I can't automatically detect the highest quality, I just have to try every "fmt" parameter manually until I get it right. So my question is: why is the XMLHttpRequest object removing cookies from subsequent requests? This is the first time I've ever done anything in JS by the way, so please, go easy on me. ;)

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• Problem with WCF Streaming

  - by H4mm3rHead

  Hi, I was looking at this thread: http://stackoverflow.com/questions/1935040/how-to-handle-large-file-uploads-via-wcf I need to have a web service hosted at my provider where i need to upload and download files to. We are talking videos from 1Mb to 100Mb hence the streaming approach. I cant get it to work, i declared an Interface: [ServiceContract] public interface IFileTransferService { [OperationContract] void UploadFile(Stream stream); } and all is fine, i implement it like this: public string FileName = "test"; public void UploadFile(Stream stream) { try { FileStream outStream = File.Open(FileName, FileMode.Create, FileAccess.Write); const int bufferLength = 4096; byte[] buffer = new byte[bufferLength]; int count = 0; while((count = stream.Read(buffer, 0, bufferLength)) > 0) { //progress outStream.Write(buffer, 0, count); } outStream.Close(); stream.Close(); //saved } catch(Exception ex) { throw new Exception("error: "+ex.Message); } } Still no problem, its published to my webserver out on the interweb. So far so good. Now i make a reference to it and will pass it a FileStream, but the argument is now a byte[] - why is that and how do i get it the proper way for streaming? Edit My binding look like this: <bindings> <basicHttpBinding> <binding name="StreamingFileTransferServicesBinding" transferMode="StreamedRequest" maxBufferSize="65536" maxReceivedMessageSize="204003200" /> </basicHttpBinding> </bindings> I can consume it without problems, and get no errors - other than my input parameter has changed from a stream to a byte[]

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• 2-step user registration with Django

  - by David S

  I'm creating a website with Django and want a fairly common 2-step user registration. What I mean by this is that the user fills in the some basic user information + some application specific information (sort of like a coupon value). Upon submit, an email is sent to ensure email address is valid. This email should contain a link to click on to "finish" the registration. When the link is clicked, the user is marked as validated and they are directed to a new page to complete optional "user profile" type information. So, pretty basic stuff. I have done some research and found django-registration by James Bennett. I do know who James is and have seen him at PyCons and DjanoCons in the past. There is obviously very few people in the world that know Django better than James (so, I know the quality of the code/app is good). But, it almost seems like a bit of over kill. I've read through the docs and was a bit confused (maybe I'm just being a bit dense today). I believe that if I do use django-registration, I will need to have some custom forms, etc. Is there anything else out there I should evaluate? Or are there any good tutorials or videos on using django-registration? I've done a bit of googling, but haven't found anything. But, I suspect that it might be a case of a lot of very common words that don't really find what you are looking for (django user registration tutorial/example). Or is just a case where it would be just about as easy to build your own solution with Django forms, etc? Here is the tech stack I'm using: Python 2.7.2 Django 1.3.1 PostgreSQL 9.1 psycopg2 2.4.1 Twitter Bootstrap 2.0.2

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• flickr api advice

  - by sico87

  Hi There, I am working with the API from flickr trying to get my photosets into my site, my problem is I am wanting to only show the primary image for each set but current it is showing all the images from each of my sets. Can anyone see where I am going wrong? <?php $f = new phpFlickr(FLICKR_API_KEY); $f->enablecache("fs", $_SERVER['DOCUMENT_ROOT']. '/../system/cache'); $result = $f->people_findByusername(FLICKR_USERNAME); $user = $result['id']; $photosets = $f->photosets_getList($user); $count = 1; foreach ($photosets['photoset'] as $ph_set): ?> <li> <h2>Images</h2> <h2>Videos</h2> <?php $photoset_id = $ph_set['id']; $photos = $f->photosets_getPhotos($photoset_id); foreach ($photos['photoset']['photo'] as $photo): ?> <a rel="lightbox[album<?=$count;?>]" href="<?= $f->buildPhotoURL($photo, 'medium') ?>" title="<?= $photo['title'] ?>"> <img src="<?= $f->buildPhotoURL($photo, 'rectangle') ?>" alt="<?= $photo['title'] ?>" width="210" height="160" title="<?= $photo['title'] ?>" /> <h3><?=$ph_set['title']?></h3> <p><?=$ph_set['description'];?></p> </a> <?php endforeach; ?> </li> <?php $count++; ?> <?php endforeach; ?>

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• Any Red5 Working Example Project for 0.9 release

  - by Daryl

  I'm trying to find 1, just 1, working sample project for Red5 that's updated to work against the latest 0.9 release without missing jars and other nonsense. Right now, it's at v0.9 and the libs are different from other versions. They have 5 pathetic examples on their website, but all were built with the older versions, and who knows which version since they don't seem to be putting any effort into updating or marketing their open source project. For these 5 old examples, I could use the Add External JARS feature to try and add libs from previous versions, they don't mention which versions they were built against and I'm not going to try each previous version to see which works (I already did and nothing works). P.S. Voted the worst documented project on the planet. It's hilarious, one of their developers posted a few videos on youtube, without bothering to attach a sample zip for the get-started project he's demoing. No offense, but that's seriously #(#$$#($!@#*. Not a good start for any tech decision maker to assess a technology for commercial use. Anyone who's more intelligent and can shed some light on behalf of these fools?

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• Windows Sidebar gadget not working in vista home premium(ie 64-bit OS)

  - by stanley

  Hi All, I have developed a windows sidebar gadget which plays videos in a flash player, It works in vista home basic(32-bit OS) but doesn't work in vista home premium(64-bit OS). I use Flash Player 9 and Actionscript 3.0. Can anyone help me Please. ***This is the html content for the player*** <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0" width="130" height="200" id="FLVPlayer"> <param name="movie" value="test.swf" /> <param name="salign" value="lt" /> <param name="quality" value="high" /> <param name="scale" value="noscale" /> <param name="FlashVars" value="&MM_ComponentVersion=1&skinName=Clear_Skin_1&streamName=2973&autoPlay=true&autoRewind=true" /> <embed src="test.swf" flashvars="&MM_ComponentVersion=1&skinName=Clear_Skin_1&streamName=2973&autoPlay=true&autoRewind=true" quality="high" scale="noscale" width="130" height="200" name="FLVPlayer" salign="LT" type="application/x-shockwave-flash" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" />

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• Implementing BindingList<T>

  - by EtherealMonkey

  I am trying to learn more about BindingList because I believe that it will help me with a project that I am working on. Currently, I have an object class (ScannedImage) that is a subtype of a class (HashedImage) that subtypes a native .Net object (Image). There is no reason why I couldn't move the two subtypes together. I am simply subtyping an object that I had previously constructed, but I will now be storing my ScannedImage object in an RDB (well, not technically - only the details and probably the thumbnail). Also, the object class has member types that are my own custom types (Keywords). I am using a custom datagridview to present these objects, but am handling all changes to the ScannedImage object with my own code. As you can probably imagine, I have quite a few events to handle that occur in these base types. So, if I changed my object to implement INotifyPropertyChanged, would the object collection (implementing BindingList) receive notifications of changes to the ScannedImage object? Also, if Keywords were to implement INotifyPropertyChanged, would changes be accessible to the BindingList through the ScannedImage object? Sorry if this seems rather newbish. I only recently discovered the BindingList and not having formal training in C# programming - am having a difficult time moving forward with this. Also, if anyone has any good reference material, I would be thankful for links. Obviously, I have perused the MSDN Library. I have found a few good links on the web, but it seems that a lot of people are now using WPF and ObservableCollection. My project is based on Winforms and .Net3.5 framework. TIA

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• Graph colouring algorithm: typical scheduling problem

  - by newba

  Hi, I'm training code problems like UvA and I have this one in which I have to, given a set of n exams and k students enrolled in the exams, find whether it is possible to schedule all exams in two time slots. Input Several test cases. Each one starts with a line containing 1 < n < 200 of different examinations to be scheduled. The 2nd line has the number of cases k in which there exist at least 1 student enrolled in 2 examinations. Then, k lines will follow, each containing 2 numbers that specify the pair of examinations for each case above. (An input with n = 0 will means end of the input and is not to be processed). Output: You have to decide whether the examination plan is possible or not for 2 time slots. Example: Input: 3 3 0 1 1 2 2 0 9 8 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Ouput: NOT POSSIBLE. POSSIBLE. I think the general approach is graph colouring, but I'm really a newb and I may confess that I had some trouble understanding the problem. Anyway, I'm trying to do it and then submit it. Could someone please help me doing some code for this problem? I will have to handle and understand this algo now in order to use it later, over and over. I prefer C or C++, but if you want, Java is fine to me ;) Thanks in advance

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• BITS client fails to specify HTTP Range header

  - by user256890

  Our system is designed to deploy to regions with unreliable and/or insufficient network connections. We build our own fault tolerating data replication services that uses BITS. Due to some security and maintenance requirements, we implemented our own ASP.NET file download service on the server side, instead of just letting IIS serving up the files. When BITS client makes an HTTP download request with the specified range of the file, our ASP.NET page pulls the demanded file segment into memory and serve that up as the HTTP response. That is the theory. ;) This theory fails in artificial lab scenarios but I would not let the system deploy in real life scenarios unless we can overcome that. Lab scenario: I have BITS client and the IIS on the same developer machine, so practically I have enormous network "bandwidth" and BITS is intelligent enough to detect that. As BITS client discovers the unlimited bandwidth, it gets more and more "greedy". At each HTTP request, BITS wants to grasp greater and greater file ranges (we are talking about downloading CD iso files, videos), demanding 20-40MB inside a single HTTP request, a size that I am not comfortable to pull into memory on the server side as one go. I can overcome that simply by giving less than demanded. It is OK. However, BITS gets really "confident" and "arrogant" demanding files WITHOUT specifying the download range, i.e., it wants the entire file in a single request, and this is where things go wrong. I do not know how to answer that response in the case of a 600MB file. If I just provide the starting 1MB range of the file, BITS client keeps sending HTTP requests for the same file without download range to continue, it hammers its point that it wants the entire file in one go. Since I am reluctant to provide the entire file, BITS gives up after several trials and reports error. Any thoughts?

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• HTML5 <video> callbacks?

  - by Andrew

  I'm working on a site for a client and they're insistent on using HTML5's video tag as the delivery method for some of their video content. I currently have it up and running with a little help from http://videojs.com/ to handle the Internet Explorer Flash fallback. One thing they've asked me to do is, after the videos finish playing (they're all a different length), fade them out and then fade a picture in place of the video --- think of it like a poster frame after the video. Is this even possible? Can you get the timecode of a currently playing movie via Javascript or some other method? I know Flowplayer (http://flowplayer.org/demos/scripting/grow.html) has an onFinish function, is that the route I should take in lieu of the HTML5 video method? Does the fact that IE users will be getting a Flash player require two separate solutions? Any input would be greatly appreciated. I'm currently using jQuery on the site, so I'd like to keep the solution in that realm if at all possible. Thanks!

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• ai: Determining what tests to run to get most useful data

  - by Sai Emrys

  This is for http://cssfingerprint.com I have a system (see about page on site for details) where: I need to output a ranked list, with confidences, of categories that match a particular feature vector the binary feature vectors are a list of site IDs & whether this session detected a hit feature vectors are, for a given categorization, somewhat noisy (sites will decay out of history, and people will visit sites they don't normally visit) categories are a large, non-closed set (user IDs) my total feature space is approximately 50 million items (URLs) for any given test, I can only query approx. 0.2% of that space I can only make the decision of what to query, based on results so far, ~10-30 times, and must do so in <~100ms (though I can take much longer to do post-processing, relevant aggregation, etc) getting the AI's probability ranking of categories based on results so far is mildly expensive; ideally the decision will depend mostly on a few cheap sql queries I have training data that can say authoritatively that any two feature vectors are the same category but not that they are different (people sometimes forget their codes and use new ones, thereby making a new user id) I need an algorithm to determine what features (sites) are most likely to have a high ROI to query (i.e. to better discriminate between plausible-so-far categories [users], and to increase certainty that it's any given one). This needs to take into balance exploitation (test based on prior test data) and exploration (test stuff that's not been tested enough to find out how it performs). There's another question that deals with a priori ranking; this one is specifically about a posteriori ranking based on results gathered so far. Right now, I have little enough data that I can just always test everything that anyone else has ever gotten a hit for, but eventually that won't be the case, at which point this problem will need to be solved. I imagine that this is a fairly standard problem in AI - having a cheap heuristic for what expensive queries to make - but it wasn't covered in my AI class, so I don't actually know whether there's a standard answer. So, relevant reading that's not too math-heavy would be helpful, as well as suggestions for particular algorithms. What's a good way to approach this problem?

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• video streaming over http in blackberry

  - by ysnky

  hi all, while i was searching video player over http, i found the article which is located at this url; http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/1089414/Stream ing_media_-_Start_to_finish.html?nodeid=2456737&ve rnum=0 i can run by adding ";deviceside=true" at the end of url. it works fine in the jde4.5 simulator. it gets 3gp videos from my local server. i tested with 580kb files and works fine. but when i get the same file from my server (not local, real server) i have problems with big files (e.g 580 kb). it plays 180kb files (but sometimes it does not play this file either) but not plays 580kb file. and also i deployed my application to my 9000 device it sometimes plays small file (180kb) but never plays big file (580kb). why it plays if it is on my local file, not play in real world? i ve stucked for days. hope you help me. and also the code at the url given below is not work, the only code i ve found is the above. blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/1089414/How_To _-_Play_video_within_a_BlackBerry_smartphone_appli cation.html?nodeid=1383173&vernum=0 btw, there is no method such as resize(long param) of CircularByteBuffer class. so i comment relavent line (buffer.resize(buffer.getSize() + (buffer.getSize() * percent / 100)); as shown below. public void increaseBufferCapacity(int percent) { if(percent < 0){ log(0, "FAILED! SP.setBufferCapacity() - " + percent); throw new IllegalArgumentException("Increase factor must be positive.."); } synchronized(readLock){ synchronized(connectionLock){ synchronized(userSeekLock){ synchronized(mediaIStream){ log(0, "SP.setBufferCapacity() - " + percent); //buffer.resize(buffer.getSize() + (buffer.getSize() * percent / 100)); this.bufferCapacity = buffer.getSize(); } } } } } thanks in advance.

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