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• Cannot hide a UIButton

  - by Neurofluxation

  Hey again, I have the following code: visitSite.hidden = YES; For some reason, when I click a UIButton and call this piece of code, the visitSite button does not hide. The code is within this block: -(IBAction)welcomeButtonPressed:(id)sender { [UIButton beginAnimations:@"welcomeAnimation" context:NULL]; [UIButton setAnimationDuration:1.5]; [UIButton setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES]; ((UIView *)sender).hidden = YES; [UIButton commitAnimations]; visitWebsite.hidden = YES; //THIS DOESN'T WORK! } Help!!

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• Infrastructure for a "news-feed"

  - by ensnare

  I'd like to offer a news-feed like feature for users of our website. When the user logs in, he is shown a list of the latest updates across various areas of the site. I'm afraid that this is going to be difficult to scale. What are some networking / database topologies that can support a scalable infrastructure without having lots of copies of the same data? (I'd like to make it so if a piece of data is updated, each user's feed is also updated live). Thanks for the assistance and advice.

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• Windows/.NET Load Distribution & Balancing

  - by andrewbadera

  Hi all, Is there a vetted Windows-friendly, or even .NET-native, load-distributing/load-balancing utility out there along the lines of HA Proxy? We have a .NET stack product, and the one piece that we step out of the stack is for load-balancing. We need something with configurable rules for distribution -- perhaps subdomain-driven -- that NLB alone doesn't seem to offer. If it integrates directly with .NET, or offers an exposed API callable by webservices, so much the better! Thanks in advance! Clarification: we need to logically part over boxes. This is not just a cluster/failover/replication scenario.

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• Am I immoral for using a variable name that differs from its type only by case?

  - by Jason Baker

  For instance, take this piece of code: var person = new Person(); or for you Pythonistas: person = Person() I'm told constantly how bad this is, but have yet to see an example of the immorality of these two lines of code. To me, person is a Person and trying to give it another name is a waste of time. I suppose in the days before syntax highlighting, this would have been a big deal. But these days, it's pretty easy to tell a type name apart from a variable name. Heck, it's even easy to see the difference here on SO. Or is there something I'm missing? If so, it would be helpful if you could provide an example of code that causes problems.

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• Hy, problem mantaining big javascript code.

  - by Totty

  I have more than 1000 lines in a big jquery plugin, that is actually a big class, that inludes some others classes, but they have to be in the same file. I inlcude a piece of code. If you have another way to simplify the code.. The actual problem is that i have a gallery with a lot of things, is dynamic with smart ajax data loading so it requires a lot of classes to use it properly and to cache the data. (function($){ var TottysGallery = function(element, options, data){ var Core = new function(){...}; var Core2 = new function(){...}; var Core3 = new function(){...}; var Core = function(){...}; };

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• using array_sum() in a while loop

  - by m477

  Hi folks, I'm learning PHP. Having trouble understanding why this piece of code isn't working. In particular: why is the result of array_sum($x) (1596) greater than $cap? Perhaps I'm not understanding the nature of while loops, but it seems to me (looking at a print_r($x)), the loop should cut out a step before it actually does. <?php function fibonacci_sum($cap = 1000){ list( $cur, $nxt, $seq ) = array( 0, 1, array() ); while ( array_sum($seq) < $cap ) { $seq[] = $cur; $add = $cur + $nxt; $cur = $nxt; $nxt = $add; } return $seq; } $x = fibonacci_sum(); echo array_sum($x); ?> Any insight is appreciated. Best, matt

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• Getting a set of elements using linq

  - by MarceloRamires

  I have the following piece of XML: <xml> <ObsCont xCampo="field1"> <xTexto>example1</xTexto> </ObsCont> <ObsCont xCampo="field2"> <xTexto>example2</xTexto> </ObsCont> <ObsCont xCampo="field3"> <xTexto>example3</xTexto> </ObsCont> </xml> How do I (using linq) get for example what is inside the xTexto tag that has as parent the ObsCont with the xCampo attribute "field2" ? (c#, vb.net, your choice)

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• DisplayObject.rotation not matching trig functions

  - by futuraprime

  I'm trying to label an animated pie chart, and I've been having a great deal of trouble getting rotated objects to line up with trigonometrically-positioned objects. So, for example, if I have a pie piece that's middle is angle theta and has been rotated n degrees in a tween, and then I try to position a label with code like this: label.x = center.x + Math.cos((theta + n)/180 * Math.PI) * radius; label.y = center.y + Math.sin((theta + n)/180 * Math.PI) * radius; the label is often not aligned with the center of the pie slice. Since I am also zooming in to the pie chart a great deal, the error becomes significant enough that it occasionally causes the label to miss the pie slice altogether. The error seems relatively unpredictable, and it looks a great deal like a rounding error, but I don't see any obvious rounding going on (the trig functions evaluate to ten or so decimal places, which should be more than enough here). How can I get these labels to position correctly?

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• difficulty based time estimation software

  - by Frankie

  Some months ago I found a project-management / time-estimation software that would ask you to sort out your tasks in terms of difficulty (1, 2 or 3) and would then estimate the time you would take to deploy. The system would auto-adapt as you were working. I've forgot the software name. For the past days I've been digging emails and searching Google with no results. Can anyone pin the software name by my description? Its not http://www.fogcreek.com (though I've found it to be a great piece of software. Thank you in advance.

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• Jquery - putting variables in :contains()

  - by Pete B

  I am trying to write a simple piece of Jquery in which the script will check whether a table cell contains a range of numbers. I'm unsure how to do this, because if you were to do something like this: var num_range = ">1"; $("td:contains(" + num_range + ")").css('background-color', '#000'); ...the script only detects if the td contains the exact text "1", rather than what I'm after, it detecting whether any tds contain any numbers greater than 1. (Any then styling the background) Thanks for any help, I'm a Javascript/Jquery novice!

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• Disable escape in Zend Form Element Submit

  - by Joaquín L. Robles

  I can't disable escaping in a Zend_Form_Element_Submit, so when the label has special characters it won't display it's value.. This is my actual Zend Form piece of code: $this->submit = new Zend_Form_Element_Submit('submit'); $this->submit->setLabel('Iniciar Sesión'); $this->submit->setIgnore(true); $this->addElement($this->submit); I've tried $this->submit->getDecorator('Label')->setOption('escape', false); but I obtain an "non-object" error (maybe submit isn't using the "Label" Decorator).. I've also tried as suggested $this->submit->setAttrib('escape', false); but no text will be shown either.. Any idea? Thanks

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• Global Timer in Javascript with Multiple Callbacks

  - by Mike Beepo

  I want to create a global timer object in javascript and then be able to add callbacks to it on the fly. This way I can just use one global timer in my script to execute all actions at a certain interval rather than wasting resources by using multiples. This is how I want to be able to piece things together: var timer = new function() { clearInterval( this.interval ); //[1] At this point I want the Callbacks to be run var self = this; setTimeout(function() {self.timer()}, 200); } function otherObject = new function() { //When created I want to bind my object's function called cb to the global timer at [1] } otherObject.prototype.cb = function() { //Stuff that should be done every time the timer is run } var someObject = new otherObject(); How would I make it possible bind any number functions (most of which are functions within other objects) to run at the interval of my timer on the fly?

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• Does someone have used Network Emulator API exposed in VS 2010

  - by Pritam

  Hi, I have seen VS2010 exposing Network Emulator API. I have installed it and trying to use this API, but not able detect whether it is really running with this code or not. Sometime I have given wrong profile name but it does not throw any error. Please find below my piece of code. If some one have used it please help me. IntPtr m_emulatorHandle = IntPtr.Zero; NetworkEmulationApi.LoadProfile(m_emulatorHandle, "300KB_WithLatency.xml"); NetworkEmulationApi.StartEmulation(m_emulatorHandle); Thanks, Pritam

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• ASP.NET MVC Routes

  - by MVCDummy09

  Can I see one example that would make this piece of code compile? public IEnumerable<RouteBase> Routes { get { return new List<Route>() { new Route(...) } } } What would you do if RouteCollection.MapRoute() didn't exist? I'm trying to put my Controller in charge of mapping routes, not Global.asax.cs. public IEnumerable<RouteBase> Routes is a member of my Controller. If the Controller is responsible for a Route, it's a bad idea to decouple the Route by using routes.MapRoute() in Global.asax.cs.

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• Is calling Process.Refresh() required for Process.HasFinished

  - by Rekreativc

  Hello I am interested if calling Process.Refresh() is mandatory when waiting for the process to terminate by checking Process.HasFinished property? I have a piece of code that works fine without the Process.Refresh() call, however I am curious weather this is a coincidence? I can see that a msdn example has the Process.Refresh() call... If its not necessary, and Process.HasExited is the only property I need, are there any advantages to making the call to Process.Refresh() ? If not, is there a reason it is in the msdn example? Thank you for your answers.

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• Ubuntu One Folder Sync Filter

  - by Andy Barlow

  Hi, I am trying to modify the Ubuntu One File syncing python scripts to not including things like .iso's. I have got as far as finding this file: /usr/share/pyshared/ubuntuone/u1sync/constants.py Inside is this piece of code: import re # the name of the directory u1sync uses to keep metadata about a mirror METADATA_DIR_NAME = u".ubuntuone-sync" # filenames to ignore SPECIAL_FILE_RE = re.compile(".*\\.(" "(u1)?partial|part|" "(u1)?conflict(\\.[0-9]+)?)$") How can I edit this last section (regex?) and make it ignore .iso files??? I'm fairly sure this is the place to put it! Pretty sure this is standard python action :) Any help would be appreciated. Thanks kindly. Andy

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• Disabling Xdebug's dumping of caught exceptions

  - by nuqqsa

  By default Xdebug will dump any exception regardless of whether it is caught or not: try { throw new Exception(); } catch (Exception $e) { } echo 'life goes on'; With XDebug enabled and the default settings this piece of code will actually output something like the following (nicely formatted): ( ! ) Exception: in /test.php on line 3 Call Stack # Time Memory Function Location 1 0.0003 52596 {main}( ) ../test.php:0 life goes on Is it possible to disable this behaviour and have it dumping only the uncaught exceptions? Thanks in advance. UPDATE: I'm about to conclude that this is a bug, since xdebug.show_exception_trace is disabled by default yet it doesn't behave as expected (using Xdebug v2.0.5 with PHP 5.2.10 on Ubuntu 9.10).

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• Exception while opening file

  - by viswanathan

  Hi I have a VC++ application and in my application i have some basic file operations. Below is the defaulting code CStdioFile cFile; CFileException e; CString sReport; CString sHtmlfile = "testreport.html" OutputDebugString((sHtmlfile)); if (!cFile.Open(sHtmlfile,CFile::modeCreate | CFile::modeWrite, &e )) { } The problem is my application executes this piece of code every few minutes. and it works fine. After several runs of the code the cFile.Open() function fails. I tried to get the error message TCHAR szError[1024]; e.GetErrorMessage(szError,1024); OutputDebugString((szError)); The irony is the szError error message is "No error occured". This again works once i restart my application. Any idea why this occurs. Thanks in advance.

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• Using code in both Actionscript3 and Javascript

  - by Ian

  Here's an interesting architectural query. I have a piece of code that needs to run on the server (under Node.js) and on the client (in a Flash 10 app written with Actionscript 3). The code is mostly fairly intricate object manipulation, it doesn't make any API calls, and works fine in both contexts. So far the project is just a demo, so I've been happy to copy and paste the code into both places. But it might be quite interesting to move forward with this. So how would you do it? I assume there is no easy way to get the Flash SDK (has to build without an IDE) to read and do something useful with a .js file. My only thought is that I could write a code-generator that takes the .js file and places it in an ActionScript wrapper. Are there any obvious approaches that I've missed? Just to pre-empt an obvious answer, I know about cross-platform languages like HaXe.

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• What's wrong with my cross-thread call in Windows Forms?

  - by MainMa

  Hi, I encounter a problem with a Windows Forms application. A form must be displayed from another thread. So in the form class, I have the following code: private delegate void DisplayDialogCallback(); public void DisplayDialog() { if (this.InvokeRequired) { this.Invoke(new DisplayDialogCallback(DisplayDialog)); } else { this.ShowDialog(); } } Now, every time I run this, an InvalidOperationException is thrown on the line this.ShowDialog();: "Cross-thread operation not valid: Control 'SampleForm' accessed from a thread other than the thread it was created on." What's wrong with this piece of code? Isn't it a valid way to make cross-thread calls? Is there something special with ShowDialog()?

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• Django and conditional aggregates

  - by piquadrat

  I have two models, authors and articles: class Author(models.Model): name = models.CharField('name', max_length=100) class Article(models.Model) title = models.CharField('title', max_length=100) pubdate = models.DateTimeField('publication date') authors = models.ManyToManyField(Author) Now I want to select all authors and annotate them with their respective article count. That's a piece of cake with Django's aggregates. Problem is, it should only count the articles that are already published. According to ticket 11305 in the Django ticket tracker, this is not yet possible. I tried to use the CountIf annotation mentioned in that ticket, but it doesn't quote the datetime string and doesn't make all the joins it would need. So, what's the best solution, other than writing custom SQL?

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• Create PHP DOM xml file and create a save file link/prompt without writing the file to the server wh

  - by Reed Richards

  I've created a PHP DOM xml piece and saved it to a string like this: <?php // create a new XML document $doc = new DomDocument('1.0'); ... ... ... $xmldata = $doc->saveXML(); ?> Now I can't use the headers to send a file download prompt and I can't write the file to the server, or rather I don't want the file laying around on it. Something like a save this file link or a download prompt would be good. How do I do it?

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• Loops in ada and the implementation

  - by maddy

  HI all, Below is a piece of code shown and doubts are regarding the implementation of loops C := character'last; I := 1; K : loop Done := C = character'first; Count2 := I; Exit K when Done; C := character'pred(c); I := I + 1; end loop K; Can anyone please tell me what does 'K' stands for.I guess its not a variable.How does 'K' control the execution of the loop? Thanks Maddy

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• Need to convert this for loop to a while loop

  - by Bragaadeesh

  Hi guys, I solved a problem recently. But I have this one piece of code where I dont utilize the for loop initialization and condition check. It looks a bit odd that way for a for loop. I want to convert it into a while loop. Please help me do it. I tried many times, but somewhere something is missing. for(;;current =(current+1)%n){ if(eliminated[current%n]){ continue; }else{ inkiPinki++; if(inkiPinki == m){ eliminated[current%n] = true; printStatus(eliminated, people); remainingGuys--; break; } } } In the above code eliminiated[index] is a boolean.

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• SimpleModal bug when positioning HTML5 video

  - by digm

  I am trying to use simple modal to display a modal window containing a video. I'm using the HTML5 "video" tag to do this. Using JQuery and SimpleModal, I can get it working in Chrome and Firefox, but for some reason Safari fails to maintain the centered positioning of the modal dialog for the video. In other words, when you scroll up and down in the windows, the modal window stays in its place, but the video scrolls up and down with the rest of the content outside the window. I've put together a 29 line piece of HTML code that you can cut and paste to test. https://pastee.org/z5sw Anyone know what I can do to fix this? I've been trying for a few hours now and no combination of JQuery, SimpleModal, or CSS changes can seem to fix this. I'd appreciate any suggestions. Thanks in advance!

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