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• PostgreSQL: Full Text Search - How to search partial words ?

  - by Anthoni Gardner

  Hello, Following a question posted here about how I can increase the speed on one of my SQL Search methods, I was advised to update my table to make use of Full Text Search. This is what I have now done, using Gist indexes to make searching faster. On some of the "plain" queries I have noticed a marked increase which I am very happy about. However, I am having difficulty in searching for partial words. For example I have several records that contain the word Squire (454) and I have several records that contain Squirrel (173). Now if I search for Squire it only returns the 454 records but I also want it to return the Squirrel records as well. My query looks like this SELECT title FROM movies WHERE vectors @@ to_tsoquery('squire'); I thought I could do to_tsquery('squire%') but that does not work. How do I get it to search for partial matches ? Also, in my database I have records that are movies and others that are just TV Shows. These are differentiated by the "" over the name, so like "Munsters" is a TV Show, whereas The Munsters is the film of the show. What I want to be able to do is search for just the TV Show AND just the movies. Any idea on how I can achieve this ? Regards Anthoni

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• simpletest - Why does setReturnValue() seem to change behaviour depending on if test is run in isola

  - by JW

  I am using SimpleTest version 1.0.1 for a unit test. I create a new mock object within a test method and on it i do: $MockDbAdaptor->setReturnValue('query',1); Now, when i run this in a standalone unit test my tested object is happy to see 1 returned when query() is called on the mock db adaptor. However, when this exact same test is run as part of my 'all_tests' TestSuite, the test is failing. This happens because a call to the mock's query() method does not appear to return any value - thus causing my test subject to complain and trigger an unexpected exception that fails the test. So, the behaviour of setReturnValue() seems to change depending on whether the test is run in isolation or not. I can get it to work in both a standalone and TestSuite contexts by using this instead: $MockDbAdaptor->setReturnValueAt(0,'query',1); So my immediate problem can be fixed ...but it feels like a hack. I thought if i create a new mock within a test method then why is the setReturnValue() behaviour getting affected by the context in which the test class instance is run? It feel like a bug.

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• Fluid CSS: float column with overflow

  - by Ates Goral

  I'm using a fluid layout in the new theme that I'm working on for my blog. I often blog about code and include <pre> blocks within the posts. The float: left column for the content area has a max-width so that the column stops at a certain maximum width and can also be shrunk: +----------+ +------+ | text | | text | | | | | | | | | | | | | | | | | | | | | +----------+ +------+ max shrunk What I want is for the <pre> elements to be wider than the text column so that I can fit 80-character-wrapped code without horizontal scroll bars. But I want the <pre> elements to overflow from the content area, without affecting its fluidity: +----------+ +------+ | text | | text | | | | | +----------+--+ +------+------+ | code | | code | +----------+--+ +------+------+ | | | | +----------+ +------+ max shrunk But, max-width stops being fluid once I insert the overhanging <pre> in there: the width of the column remains at the specified max-width even when I shrink the browser beyond that width. I've played around with a bare-minimum scenario to reproduce the problem and noticed that doing either of the following brings back the fluidity: Remove the <pre> (doh...) Remove the float: left The workaround I'm currently using is to insert the <pre> elements into "breaks" in the post column, so that the widths of the post segments and the <pre> segments are managed mutually exclusively: +----------+ +------+ | text | | text | +----------+ +------+ +-------------+ +-------------+ | code | | code | +-------------+ +-------------+ +----------+ +------+ +----------+ +------+ max shrunk But this forces me to insert additional closing and opening <div> elements into the post text which I'd rather keep semantically pristine. Admittedly, I don't have a full grasp of how the box model works with floats with overflowing content, so I don't understand why the combination of float: left on the container and the <pre> inside it cripple the max-width of the container. I'm observing the same problem on Firefox/Chrome/Safari/Opera. IE6 (the crazy one) seems happy all the time. This also doesn't seem dependent on quirks/standards mode.

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• Bypass all cacheing on jQuery.autocomplete(1.02)

  - by technicalbloke

  I am using jQuery.autocomplete(1.02) on my search box and I want exact string and substring matching. I don't care (yet!) about the database load, I'm happy for it to fire off a query every keystroke and bypass the caching entirely - I just don't want anything missed. To this end I have tried setting cacheLength=1, the minimum permitted, but the autocomplete function refuses to fire off a GET request for each key up. searchbox GET_request 'a' -> http://localhost/service_search_request?q=a 'ar' -> http://localhost/service_search_request?q=ar 'ars' -> http://localhost/service_search_request?q=ars Instead, it sends the first and the third and misses the second, giving me the wrong results for 'ar' :-/ I've cleared my cache and sessions but it looks like some sort of caching is still going on. AFAIK I have no proxying going on and I'm shift-refreshing each time. It looks likely then that this behavior is from jQuery.autocomplete itself. So my questions are... A) Does this seem likely? i.e. is it a feature, or maybe a bug? B) If so is there a clean way around it?... C) If not, what autocomplete would you use instead? Naturally D) No you're just using it incorrectly you douche! is always a possibility, and indeed the one I'd prefer having spent time going down this road - assuming it comes with a link to the docs I've failed to find / read! Cheers, Roger :)

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• Trying to save file from Flash to PHP using $GLOBALS["HTTP_RAW_POST_DATA"]

  - by jolyonruss

  Let me start by saying PHP isn't my forte, I'm usually reluctant to try working with it because of problems exactly like this. The code works fine on my local machine under MAMP and on my server, but doesn't on the clients server :'( So what am I trying to do, well - save an image from Flash onto the server, simple right?! I'm using the method described on this site here: http://designreviver.com/tutorials/actionscript-3-jpeg-encoder-revealed-saving-images-from-flash/ but have made a small alteration so that instead of echoing the jpg causing the browser to download it locally, I do an fwrite and an fclose to save it to the server. Here is my PHP: $imageFile = '../images/' . $_GET['name']; $imageHandle = fopen($imageFile, "w"); fwrite($imageHandle, $jpg); fclose($imageHandle); } ? I've dona a phpinfo() on my clients server and it's running 5.2.2 my host is running 5.2.11 I don't know if much can have changed in those 9 minor revisions? I've also read another question on here which suggests making suer always_populate_raw_post_data is set to ON, but it's set to OFF on all of the server environments I've been testing in. I'm doing some XML saving using file_get_contents('php://input') which I've tried but failed to get working with images. Any help would be gratefully received, I'm happy to post the AS3 as well but it's EXACTLY the same as example I've linked above and works locally. As far as I can tell the problem lies with the PHP. Cheers.

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• User Control SiteMap Provider Rendering Error

  - by Serexx

  I have created a Custom Server Control that renders the SiteMap as a pure UL for CSS styling. At run-time it renders properly but in VS2008 Design View VS shows this error: Error Rendering Control - menuMainAn unhandled exception has occurred. The provider 'AspNetXmlSiteMapProvider' specified for the defaultProvider does not exist in the providers collection. I have 'AspNetXmlSiteMapProvider' specified in web.config as per here : link text While I am happy that the code runs properly, the Designer error is bothersome if the underlying issue might cause the code to break in some circumstances so I need to understand what is going on... The code explicitly references the sitemap in the Render Method with : int level = 1; string ul = string.Format("<div class='{0}' id='{1}'>{2}</div>", CssClassName, this.ID.ToString(), EnumerateNodesRecursive(SiteMap.RootNode, level)); output.Write(ul); and the recursive method called referrences SiteMap.CurrentNode. Otherwise there are no explicit sitemap references in the code. Does anyone have any ideas why Deisgner is complaining?

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• How to bind form collection back to custom model object that uses 2 custom objects in asp.net mvc?

  - by baijajusav

  What I'm trying to do is rather basic, but I might have my facts mixed up. I have a details page that has a custom class as it's Model. The custom class uses 2 custom objects with yet another custom object a property of one of the 2. The details page outputs a fair amount of information, but allows the user to post a comment. When the user clicks the post button, the page gets posted to a Details action that looks something like this: [AcceptVerbs(HttpVerbs.Post)] public ActionResult Details(VideoDetailModel vidAndComment) { ....} The only fields on the form that is posted are CommentText and VideoId. Here is what the VideoDetailModel looks like. public class VideoDetailModel { public VideoDetailModel() { Video = new VideoDTO(); Comment = new CommentDTO(); } public VideoDetailModel(VideoDTO vid) { Video = vid; Comment = new CommentDTO(); } public VideoDTO Video { get; set; } public CommentDTO Comment { get; set; } } VideoDTO has a few properties, but the ones I need are VideoId. CommentDTO's pertinent properties include CommentText (which is posting correctly) and a UserDTO object that contains a userId property. Everything other than the CommentText value is not being posted. I also have the following line on the ascx page, but the model value never gets posted to the controller. Html.Hidden("Model.Video.VideoId", Model.Video.VideoId); I'm really not sure what I'm missing here. I suppose if I added more form fields for the properties I need, they would get posted, but I only need 1 form entry field for the CommentText. If I could get the same Model objects value that were sent to the page to post with the page, that would help. I'll be happy to make any clarifications needed here. I'm just at loss as to what's going on.

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• Agile and Scrum burning me down please help me figuring out the truth

  - by jadook

  hi all, in the last while I installed MS-TFS 2008 then started to get myself prepared to use Agile Process Guidance template shipped with the TFS. with little googling I passed through Mike Cohn materials: I watched his conference in youtube "sponsored by google: http://www.youtube.com/watch?v=fb9Rzyi8b90 http://www.youtube.com/watch?v=jeT0pOVg0EI Read his book "Agile Estimating and Planning" Watching the video series in his website: http://www.mountaingoatsoftware.com/presentations-tag/video-recorded I was very happy while absorbing and eating the techniques he is using with the teams and how agile and scrum is such a great software process/methodology until I saw Mike answering a question regarding an architect role and talking about the requirements document... at that point everything start falling apart due to the following: Last year I had been assigned to make full analysis "including requirements gathering" for big project "very high priority project". within 2 months of hardwork, dedication and commitment I delivered the whole analysis with full satisfaction of the customer and my BOSS and ZERO amendments. Later on, the project entered the architecting, development ... phases. due to the fact that the system included many competitive and exciting features I requested patenting it and its going in the process... so imagine you are the kind of person who used to love facing all kind of challenges and returning with excellent experience and results for the stakeholders and yourself, How fairly agile and scrum processes will credit and admit your talent and passion while the scrum master/coach treat the team as one unit that accomplish user stories and converge through trial and error approach??!!!! with that dark thoughts about agile and scrum I found many people "anti agile" and on top of them is "Crispin Rogers Johnson": http://agile-crispin.blogspot.com/ that guy made anti statement for everything Mike Cohn used to talk about. I really don't know what to do next! so any guidance will be appreciated. Thanks,

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• Authlogic, logout, credential capture and security

  - by Paddy

  Ok this is something weird. I got authlogic-oid installed in my rails app today. Everything works perfectly fine but for one small nuisance. This is what i did: I first register with my google openid. Successful login, redirection and my email, along with my correct openid is stored in my database. I am happy that everything worked fine! Now when i logout, my rails app as usual destroys the session and redirects me back to my root url where i can login again. Now if i try to login it still remembers my last login id. Not a big issue as i can always "Sign in as a different user" but i am wondering if there is anyway to not only logout from my app but also logout from google. I noticed the same with stack overflow's openid authentication system. Why am i so bothered about this, you may ask. But is it not a bad idea if your web apps end user, who happens to be in a cyber cafe, thinks he has logged out from your app and hence from his google account only to realize later that his google account had got hacked by some unworthy loser who just happened to notice that the one before him had not logged out from google and say.. changed his password!! Should i be paranoid? Isn't this a major security lapse while implementing the openid spec? Probably today someone can give me a workaround for this issue and the question is solved for me. But what about the others who have implemented openid in their apps and not implemented a workaround?

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• Guice, JDBC and managing database connections

  - by pledge

  I'm looking to create a sample project while learning Guice which uses JDBC to read/write to a SQL database. However, after years of using Spring and letting it abstract away connection handling and transactions I'm struggling to work it our conceptually. I'd like to have a service which starts and stops a transaction and calls numerous repositories which reuse the same connection and participate in the same transaction. My questions are: Where do I create my Datasource? How do I give the repositories access to the connection? (ThreadLocal?) Best way to manage the transaction (Creating an Interceptor for an annotation?) The code below shows how I would do this in Spring. The JdbcOperations injected into each repository would have access to the connection associated with the active transaction. I haven't been able to find many tutorials which cover this, beyond ones which show creating interceptors for transactions. I am happy with continuing to use Spring as it is working very well in my projects, but I'd like to know how to do this in pure Guice and JBBC (No JPA/Hibernate/Warp/Reusing Spring) @Service public class MyService implements MyInterface { @Autowired private RepositoryA repositoryA; @Autowired private RepositoryB repositoryB; @Autowired private RepositoryC repositoryC; @Override @Transactional public void doSomeWork() { this.repositoryA.someInsert(); this.repositoryB.someUpdate(); this.repositoryC.someSelect(); } } @Repository public class MyRepositoryA implements RepositoryA { @Autowired private JdbcOperations jdbcOperations; @Override public void someInsert() { //use jdbcOperations to perform an insert } } @Repository public class MyRepositoryB implements RepositoryB { @Autowired private JdbcOperations jdbcOperations; @Override public void someUpdate() { //use jdbcOperations to perform an update } } @Repository public class MyRepositoryC implements RepositoryC { @Autowired private JdbcOperations jdbcOperations; @Override public String someSelect() { //use jdbcOperations to perform a select and use a RowMapper to produce results return "select result"; } }

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• 'Must Override a Superclass Method' Errors after importing a project into Eclipse

  - by Tim H

  Anytime I have to re-import my projects into Eclipse (if I reinstalled Eclipse, or changed the location of the projects), almost all of my overridden methods are not formatted correctly, causing the error 'The method ?????????? must override a superclass method'. It may be noteworthy to mention this is with Android projects - for whatever reason, the method argument values are not always populated, so I have to manually populate them myself. For instance: list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() { public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { //These arguments have their correct names } }); will be initially populated like this: list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() { public void onCreateContextMenu(ContextMenu arg1, View arg2, ContextMenuInfo arg3) { //This methods arguments were not automatically provided } }); The odd thing is, if I remove my code, and have Eclipse automatically recreate the method, it uses the same argument names I already had, so I don't really know where the problem is, other then it auto-formatting the method for me. This becomes quite a pain having to manually recreate ALL my overridden methods by hand. If anyone can explain why this happens or how to fix it .. I would be very happy. Maybe it is due to the way I am formatting the methods, which are inside an argument of another method?

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• Authlogic, logout and credential capture

  - by Paddy

  Ok this is something weird. I got authlogic-oid installed in my rails app today. Everything works perfectly fine but for one small nuisance. This is what i did: I first register with my google openid. Successful login, redirection and my email, along with my correct openid is stored in my database. I am happy that everything worked fine! Now when i logout, my rails app as usual destroys the session and redirects me back to my root url where i can login again. Now if i try to login it still remembers my last login id. Not a big issue as i can always "Sign in as a different user" but i am wondering if there is anyway to not only logout from my app but also logout from google. I noticed the same with stack overflow's openid authentication system. Why am i so bothered about this, you may ask. But is it not a bad idea if your web apps end user, who happens to be in a cyber cafe, thinks he has logged out from your app and hence from his google account only to realize later that his google account had got hacked by some unworthy loser who just happened to notice that the one before had not logged out from google and say.. changed his password!! Should i be paranoid?

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• Python class variables not defined with called from outside module

  - by Jimmy

  I am having some issues with calling a function outside of a module. The scenario is I have a small class library that is using turtle to do some drawing, the function within the module calls the classes also within the module and draws things, etc. This all works fine and dandy when I call the function from within the same file, but if I have another file and call myLib.scene() I get variable undefined errors. Code examples: a class class Rectangle(object): def __init__(self, pen, height=100, width=100, fillcolor=''): self.pen = pen self.height = height self.width = width self.fillcolor = fillcolor def draw(self, x, y): '''draws the rectangle at coordinates x and y''' self.pen.goto(x, y) if self.fillcolor: self.pen.fillcolor(self.fillcolor) self.pen.fill(True) self.pen.down() for i in range(0,4): self.pen.forward(self.height if i%2 else self.width) self.pen.left(90) and the calling function is this def scene(pen): rect = Rectangle(pen) rect.draw(100,100) when I put the line scene(turtle.Turtle()) into the same file I have no issues, the rectangle is drawn and everyone goes home happy. However, if I try to call it from a separate python file like so: myLib.scene(turtle.Turtle()) I get an error: NameError: global name 'pen' is not defined, in the for loop of my draw method. Even if the line above is in the same file it still bombs out. What is going on?

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• Code Golf: Connect 4

  - by Matthieu M.

  If you don't know the Connect 4 game, follow the link :) I used to play it a lot when I was a child. At least until my little sister got bored with me winning... Anyway I was reading the Code Golf: Tic Tac Toe the other day and I thought that solving the Tic Tac Toe problem was simpler than solving the Connect 4... and wondered how much this would reflect on the number of characters a solution would yield. I thus propose a similar challenge: Find the winner The grid is given under the form of a string meant to passed as a parameter to a function. The goal of the code golf is to write the body of the function, the parameter will be b, of string type The image in the wikipedia article leads to the following representation: "....... ..RY... ..YYYR. ..RRYY. ..RYRY. .YRRRYR" (6 rows of 7 elements) but is obviously incomplete (Yellow has not won yet) There is a winner in the grid passed, no need to do error checking Remember that it might not be exactly 4 The expected output is the letter representing the winner (either R or Y) I expect perl mongers to produce the most unreadable script (along with Ook and whitespace, of course), but I am most interested in reading innovative solutions. I must admit the magic square solution for Tic Tac Toe was my personal fav and I wonder if there is a way to build a similar one with this. Well, happy Easter weekend :) Now I just have a few days to come up with a solution of my own!

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• Swing layout with miglayout and nested panels

  - by Jazzepi

  I have a Swing program using SwingLayout. The structure of the Swing components looks like this. JFrame JPanel (Cardlayout) JPanel (Miglayout) - Main panel Jpanel (Flowlayout) - Checkbox Panel JPanel (Flowlayout) - Option Panel My problem right now is that I'm not sure how to prevent the checkbox panel from growing. I don't want it to "push" out the column that it's in to the right. I want Wraplayout (which works fine on the option panel) to wrap the content of the checkbox panel when it grows too big. This is the view of it from the Windowsbuilder GUI inside of Eclipse. The panel with the label "sites" in it is the Checkbox Panel. Directly to the right of the Checkbox panel is the Option panel. The big panel containing both of them is the main panel. http://i.imgur.com/S7Njo.png This is what happens when I add too many checkboxes http://i.imgur.com/f2SZz.png My main problem is that I don't understand why setting "grow 0" on the column constraint for the first column in mainpanel doesn't prevent it from growing when the component inside gets too big as I add new checkboxes to the site panel (the site panel can have an arbitrary number of checkboxes). This is my miglayout for the main panel. mainPanel.setLayout(new MigLayout("", "[][grow]", "[][][][][][][][grow]")); Here are my component constraints for when I add the checkbox panel siteCheckBoxPanel = new JPanel(); mainPanel.add(siteCheckBoxPanel, "cell 0 0,alignx left,gapx 0px,aligny center"); siteCheckBoxPanel.setLayout(new FlowLayout(FlowLayout.CENTER, 5, 5)); I've also tried it without flow layout, and that doesn't fix anything. Any insight you could provide would be great! I'm also happy to provide more information if people have questions. FYI I've also tried "grow 0" on both the column and row constraint for the cell that the Checkbox Panel is inside.

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• C# Static constructors design problem - need to specify parameter

  - by Neil Dobson

  I have a re-occurring design problem with certain classes which require one-off initialization with a parameter such as the name of an external resource such as a config file. For example, I have a corelib project which provides application-wide logging, configuration and general helper methods. This object could use a static constructor to initialize itself but it need access to a config file which it can't find itself. I can see a couple of solutions, but both of these don't seem quite right: 1) Use a constructor with a parameter. But then each object which requires corelib functionality should also know the name of the config file, so this has to be passed around the application. Also if I implemented corelib as a singleton I would also have to pass the config file as a parameter to the GetInstance method, which I believe is also not right. 2) Create a static property or method to pass through the config file or other external parameter. I have sort of used the latter method and created a Load method which initializes an inner class which it passes through the config file in the constructor. Then this inner class is exposed through a public property MyCoreLib. public static class CoreLib { private static MyCoreLib myCoreLib; public static void Load(string configFile) { myCoreLib = new MyCoreLib(configFile); } public static MyCoreLib MyCoreLib { get { return myCoreLib; } } public class MyCoreLib { private string configFile; public MyCoreLib(string configFile) { this.configFile = configFile; } public void DoSomething() { } } } I'm still not happy though. The inner class is not initialized until you call the load method, so that needs to be considered anywhere the MyCoreLib is accessed. Also there is nothing to stop someone calling the load method again. Any other patterns or ideas how to accomplish this?

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• PDCurses TUI C++ Win32 console app - Access violation reading location

  - by Bach

  I have downloaded pdcurses source and was able to successfully include curses.h in my project, linked the pre-compiled library and all good. After few hours of trying out the library, I saw the tuidemo.c in the demos folder, compiled it into an executable and brilliant! exactly what I needed for my project. Now the problem is that it's a C code, and I am working on a C++ project in VS c++ 2008. The files I need are tui.c and tui.h How can I include that C file in my C++ code? I saw few suggestions here but the compiler was not too happy with 100's of warnings and errors. How can I go on including/using that TUI pdcurses includes!? Thanks EDIT: I added extern "C" statement, so my test looks like this now, but I'm getting some other type of error #include <stdio.h> #include <stdlib.h> using namespace std; extern "C" { #include <tui.h> } void sub0(void) { //do nothing } void sub1(void) { //do nothing } int main (int argc, char * const argv[]) { menu MainMenu[] = { { "Asub", sub0, "Go inside first submenu" }, { "Bsub", sub1, "Go inside second submenu" }, { "", (FUNC)0, "" } /* always add this as the last item! */ }; startmenu(MainMenu, "TUI - 'textual user interface' demonstration program"); return 0; } Although it is compiling successfully, it is throwing an Error at runtime, which suggests a bad pointer: 0xC0000005: Access violation reading location 0x021c52f9 at line startmenu(MainMenu, "TUI - 'textual user interface' demonstration program"); Not sure where to go from here. thanks again.

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• SimpleXML - "Node no longer exists"

  - by SubZane

  Hi I'm trying to get the video data from this youtube playlist feed and add the interesting data to an array and use that later, but as you can see from the feed some videolinks are "dead" and that results in problems for my code. The error I get is "Node no longer exists" when I try to access $attrs['url']. I've tried for hours to find a way to check if the node exists before I access it but I have no luck. If anyone could help me to either parse the feed some other way with the same result or create a if-node-exists check that works I would be most happy. Thank you in advance $url = 'http://gdata.youtube.com/feeds/api/playlists/18A7E36C33EF4B5D?v=2'; $sxml = simplexml_load_file($url); $i = 0; $videoobj; foreach ($sxml->entry as $entry) { // get nodes in media: namespace for media information $media = $entry->children('http://search.yahoo.com/mrss/'); // get video player URL $attrs = $media->group->player->attributes(); $videoobj[$i]['url'] = $attrs['url']; // get video thumbnail $attrs = $media->group->thumbnail[0]->attributes(); $videoobj[$i]['thumb'] = $attrs['url']; $videoobj[$i]['title'] = $media->group->title; $i++; }

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• Mercurial Editor: "abort: The system cannot find the file specified"

  - by Killroy

  I have a problem getting Mercurial to recognise my editor. I have a file, c:\windows\notepad.exe and typing "notepad" at the command prompt works. I can commit by using the "-m" argument to supply the commit title. But a simple "hg commit" brings up the error. A call to "hg --traceback commit" brings up: Traceback (most recent call last): File "mercurial\dispatch.pyc", line 47, in _runcatch File "mercurial\dispatch.pyc", line 466, in _dispatch File "mercurial\dispatch.pyc", line 336, in runcommand File "mercurial\dispatch.pyc", line 517, in _runcommand File "mercurial\dispatch.pyc", line 471, in checkargs File "mercurial\dispatch.pyc", line 465, in <lambda> File "mercurial\util.pyc", line 401, in check File "mercurial\commands.pyc", line 708, in commit File "mercurial\cmdutil.pyc", line 1150, in commit File "mercurial\commands.pyc", line 706, in commitfunc File "mercurial\localrepo.pyc", line 836, in commit File "mercurial\cmdutil.pyc", line 1155, in commiteditor File "mercurial\cmdutil.pyc", line 1184, in commitforceeditor File "mercurial\ui.pyc", line 361, in edit File "mercurial\util.pyc", line 383, in system File "subprocess.pyc", line 470, in call File "subprocess.pyc", line 621, in __init__ File "subprocess.pyc", line 830, in _execute_child WindowsError: [Error 2] The system cannot find the file specified abort: The system cannot find the file specified I've tried setting the HGEDITOR environment variable, setting "visual =" and "editor =" in the Mercurial.ini file. I tried full path as well as command only. I also tried copying the notepad.exe file into both the current folder as well as the mercurial folder. Ideally I would like to use the editor at this location "C:\PortableApps\Notepad++Portable\Notepad++Portable.exe", but at this stage I would be happy with any editor!

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• Java FileLock for Reading and Writing

  - by bobtheowl2

  I have a process that will be called rather frequently from cron to read a file that has certain move related commands in it. My process needs to read and write to this data file - and keep it locked to prevent other processes from touching it during this time. A completely separate process can be executed by a user to (potential) write/append to this same data file. I want these two processes to play nice and only access the file one at a time. The nio FileLock seemed to be what I needed (short of writing my own semaphore type files), but I'm having trouble locking it for reading. I can lock and write just fine, but when attempting to create lock when reading I get a NonWritableChannelException. Is it even possible to lock a file for reading? Seems like a RandomAccessFile is closer to what I need, but I don't see how to implement that. Here is the code that fails: FileInputStream fin = new FileInputStream(f); FileLock fl = fin.getChannel().tryLock(); if(fl != null) { System.out.println("Locked File"); BufferedReader in = new BufferedReader(new InputStreamReader(fin)); System.out.println(in.readLine()); ... The exception is thrown on the FileLock line. java.nio.channels.NonWritableChannelException at sun.nio.ch.FileChannelImpl.tryLock(Unknown Source) at java.nio.channels.FileChannel.tryLock(Unknown Source) at Mover.run(Mover.java:74) at java.lang.Thread.run(Unknown Source) Looking at the JavaDocs, it says Unchecked exception thrown when an attempt is made to write to a channel that was not originally opened for writing. But I don't necessarily need to write to it. When I try creating a FileOutpuStream, etc. for writing purposes it is happy until I try to open a FileInputStream on the same file.

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• Upgrade to Delphi 2010, or stick with Delphi 7 "forever"?

  - by tim11g

  I am an individual user of Delphi, starting back in the early Turbo Pascal days. I have quite a bit of code developed over the years, but I have never sold software commercially or used it for business. Historically, Borland supported the non-professional users with lower cost versions, but Embarcadero does not. As I consider upgrading to Delphi 2010, I am put off by the high price. Embarcadero is also trying to "encourage" upgrading by threatening to charge "new user" prices for upgrades after Dec 31st. I have several questions for the community to help me decide whether to upgrade. 1) I have read about difficulties updating existing code to support the unicode string types. I have no need for unicode strings, and I am happy with the string support in D7. Will I have to modify existing code and components just to re-compile under D2010? Or are there compiler options to allow backward compatibility if new string types are not required? 2) The main reason I'm considering upgrading is for IDE improvements, and to get access to new APIs added to Windows since 2002. Are there any Windows 7 APIs or capabilities that would be impossible to support from my programs compiled using using Delphi 7 (assuming appropriate JEDI API libraries, for example)? 3) Is there anything else about Delphi 2010 that is really compelling for someone who is primarily interested in Win32 apps, and not working with databases? I have read that D2010 is slow to load, and other versions between D7 and D2010 have had stability issues, and the help system was "broken". What is the biggest benefit to D2010?

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• iPhone - Failed to save the videos metadata to the filesystem.

  - by cameron

  My application uses the UIImagePicker to allow the user to use the camera and capture a photo to edit/etc. I am getting the error message below: 2010-02-03 10:41:24.018 LivingRoom[5333:5303] Failed to save the videos metadata to the filesystem. Maybe the information did not conform to a plist. Program received signal: “EXC_BAD_ACCESS”. A search in Google brings up a number of threads in various forums, with no ultimate response/root cause/suggestions on how to fix/debug. An example is the thread below with code which is very similar to my app: http://groups.google.com/group/iphonesdkdevelopment/browse_thread/thread/6b7b396c62bef398 The error disappears for a while (10 tests in a row, no errors) if I reboot the iPhone. I have not been able to determine what makes it reoccur after a reboot, but it does. I am not using the video source and the fact that a reboot solves the problem for a while points to some sort of mem leak (perhaps?). The problem always shows up on both the iPhone (even after the reboot) and the simulator when choosing a photo from the album, but the app does not crash on the iPhone or the simulator. The same app with exact code did not have the error message when compiled using SDK 3.0 (last August/September). But 3.1.x has always produced the error message, which means that once a week or so the iPhone needs to be rebooted for the error to disappear. The users are not happy with that solution any longer!! Any suggestion/clues would be greatly appreciated.

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• How do you pass .net objects values around in F#?

  - by Russell

  I am currently learning F# and functional programming in general (from a C# background) and I have a question about using .net CLR objects during my processing. The best way to describe my problem will be to give an example: let xml = new XmlDocument() |> fun doc -> doc.Load("report.xml"); doc let xsl = new XslCompiledTransform() |> fun doc -> doc.Load("report.xsl"); doc let transformedXml = new MemoryStream() |> fun mem -> xsl.Transform(xml.CreateNavigator(), null, mem); mem This code transforms an XML document with an XSLT document using .net objects. Note XslCompiledTransform.Load works on an object, and returns void. Also the XslCompiledTransform.Transform requires a memorystream object and returns void. The above strategy used is to add the object at the end (the ; mem) to return a value and make functional programming work. When we want to do this one after another we have a function on each line with a return value at the end: let myFunc = new XmlDocument("doc") |> fun a -> a.Load("report.xml"); a |> fun a -> a.AppendChild(new XmlElement("Happy")); a Is there a more correct way (in terms of functional programming) to handle .net objects and objects that were created in a more OO environment? The way I returned the value at the end then had inline functions everywhere feels a bit like a hack and not the correct way to do this. Any help is greatly appreciated!

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• Format Java Code in Netbeans / Eclipse, but save it differently

  - by Walter White

  Hi all, I asked a related question before, but I guess the root of the question is. Let's say I have 2 developers on the team and they both like to look at code in different formats. One likes the braces to be on a new line and the other doesn't. The approach I was using before is that anytime we run a build, the code is automatically formatted according to the Java/Sun standards using Jalopy; however, I would like the developers to be as happy as possible. They can change the font size, font color, background color, etc. If I am currently using the Jalopy Maven plugin to format code, can/should I write a hook to SVN that calls mvn jalopy:format on the project when it's checked in? Is this reliable? That solution doesn't work 100% because it requires the developer to manually format the source code to their liking every time they open a file that hasn't been formatted yet. I was thinking an IDE plugin would be nice as it could automatically format the source to their liking and then save it as another. What other options do I have to ensure the code is formatted nicely on checkin? Thanks, Walter

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• Flash video slooow in AIR 2 HTMLLoader component

  - by shane

  I am working on a full screen kiosk application in Flex 4/Air 2 using Flash Builder 4. We have a company training website which staff can access via the kiosk, and the main content is interactive flash training videos. Our target machines are by no means 'beefy', they are Atom n270s @ 1.6Ghz with 1Gb RAM. As it stands the videos are all but unusable when used from within the Air application, the application becomes completely unresponsive (100% cpu usage, click events take approx 5-10 seconds to register). So far I have tried: increasing the default frame rate from 24fps to 60. No improvement. nativeWindow.stage.frameRate = 60; running the videos in a stripped down version of my app, just a full screen HTMLLoader component pointed at the training website. No better than before. disabled hyper threading. The Atom CPU is split into two virtual cores, and the AIR app was only able to use one thread so maxed out at 50% CPU usage. Since the kiosk will only run the AIR app I am happy to loose hyper threading to increase the performance of the Air app. Marginal Improvement. The same website with the same videos is responsive if viewed in ie7 on the same machine, although Internet Explorer takes advantage of the CPU’s hyper threading. The flash videos are built with Adobe Captivate and from what I understand employee JavaScript to relay results back to the server. I will add more information about the video content asap as the training guru is back in the office later this week.

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