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  • Significant events in Computer Science

    - by Brabster
    What were the most significant events or milestones in the history of computer science? I haven't been able to find a potted history, so I thought I'd see what views the SO community had on the question. I'm studying for a Masters in CS at the moment, so I'm hoping for some stuff to go take a look at that I've not come across before. Related: Computer science advances in past 5 years Significant new inventions in computing since 1980

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  • Access Controls in Silverlight DataGrid Column Header from Code

    - by fuzzyman
    We have custom headers in the Silverlight DataGrid using the ContentTemplate. We've got a button in the header and need to programmatically access the button to hook up the event. We're using IronPython, so we can't statically bind the event in the xaml (plus we use the grid for many different views - so we dynamically generate the xaml). How can we get access to controls inside a datagrid column header?

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  • Form data sent to Node via Post is undefined

    - by user185812
    I know this has been asked countless times on here, however I tried all the solutions and am still having the issue. Most people say to set the content-type (which I did) and to name the inputs that I wish to Post to node. I have done both of these things, yet still get "undefined" when trying to send data from an HTML form to node. JADE Templating HTML Code (Sorry I can't seem to get the indenting to show up here, however I think I should leave the code intact when posting here instead of converting it to normal HTML so that if the error is in here, you are still able to help) Form(action="/registration", method="post", enctype="application/x-www-form-urlencoded") div(class="control-group-Username") label(class="control-group", for="username") Username: div.controls input#Username(id="Username", type="text", placeholder="Username Here", maxlength="23", name="username") //Other divs and stuff here button.btn#submit_button(type="submit") Submit app.js code /** * Module dependencies. */ express = require('express') , routes = require('./routes') , user = require('./routes/user') , http = require('http') , path = require('path'); app = express(); // all environments app.set('port', process.env.PORT || 3000); app.set('views', __dirname + '/views'); app.set('view engine','jade'); app.use(express.favicon()); app.use(express.logger('dev')); app.use(express.bodyParser()); app.use(express.methodOverride()); app.use(express.cookieParser('your secret here')); app.use(express.session()); app.use(app.router); app.use(require('less-middleware')({ src: __dirname + '/public' })); app.use(express.static(path.join(__dirname, 'public'))); // development only if ('development' == app.get('env')) { app.use(express.errorHandler()); } app.use(express.static(__dirname + '/public')); app.get('/', routes.index); app.get('/users', user.list); app.get('/register', routes.register); http.createServer(app).listen(app.get('port'), function(){ console.log('Express server listening on port ' + app.get('port')); }); require('./Register.js'); register.js code app.post('/registration', function(req, res) { var Email=req.body.username console.log(username); });

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  • Menu item for each module, with module content loading dynamically with Prism or MEF

    - by user573145
    I am developing an application currently using Prism and MEF. I would ideally like to generate a toolbar or menu with an item for each module, and when an item is clicked, only the views declared within that module load into a tab control. For example: Menu Region: ModuleA(Selected) | ModuleB Tab Region: ModuleAViewA | ModuleAViewB | ModuleAViewC Changes to Menu Region: Employees | Inventory(selected) Tab Region: Items | In Fi

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  • iPhone: Push Navigation Controller (w/ TableViewController) onto stack. Is this possible?

    - by Nic Hubbard
    I have a view which contains a UIButton. When this is clicked, it calls a method that loads another NIB. Now, normally, that nib would load a view onto the stack, and everything would be fine. But, I am trying to load a Navigation Controller (so that I can have table views that are multiple levels deep), and all I get it errors. What is the proper method for loading a Navigation Controller and putting it on the top of the stack?

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  • Will there be any problem if i inherit aspx page from System.Web.Mvc.ViewPage

    - by Vinni
    I am developing a website which will be having both asp.net pages and MVC pages in it, So I have BaseWebPage class which will be used for both asp.net pages and MVC Views. but My BaseWebPage class is inherited from System.Web.Mvc.ViewPage, So Will there be any code/ functionality break for normal asp.net pages, because System.Web.Mvc.ViewPage is overriding some of the Pagelife cycle methods.

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  • Should you use a PHP Framework?

    - by christopher-mccann
    I have asked before about selecting a framework but I have never actually asked should you a framework? In the past I have never used one but I am being drawn more and more to the idea to speed up development time. I am really concerned about the performance of the application though. Does anyone have any views on whether it is a good idea or not to use a framework? The performance of the apps built on top of it will be crucial. Thanks

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  • Convert a MSSQL database to MYSQL database

    - by soldieraman
    Alright so I want to convert an already exist MSSQL database (2005) to a MYSQL database. There is nothing extraordinary to be done The only things I need to achieve is Recreate the tables Transfer data Relationships would be nice but not necessary No views, no sprocs, no functions. Any easy way to do this. Also do you know of any DST (Database Synchronization Tool) which would let me do MSSQL to MYSQL MYSQL to MYSQL MSSQL to MSSQL (I know there is SQL Delta for this)

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  • Create a flexible, localized, Ruby-on-Rails list-of-values

    - by Craig
    I have a list of values (Beginner, Intermediate, Advanced, Fluent, Native) that I would like to: act as the model for a SELECT list act as a model to convert ids to values in a HTML table use in multiple controllers and views keep in an order that preserves the business rules (ordered by skill level) localize at some point in the future Is there a way of implementing this list to address all or most of my needs?

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  • UINavigationBar unresponsive after canceling a UITableView search in nav controller in tab bar in a popover

    - by Mark
    Ok, this is an odd one and I can reproduce it with a new project easily. Here is the setup: I have a UISplitViewController. In the left side I have a UITabBarController. In this tab bar controller I have two UINavigationControllers. In the navigation controllers I have UITableViewControllers. These table views have search bars on them. Ok, what happens with this setup is that if I'm in portrait mode and bring up this view in the popover and I start a search in one of the table views and cancel it, the navigation bar becomes unresponsive. That is, the "back" button as well as the right side button cannot be clicked. If I do the exact same thing in landscape mode so we are not in a popover, this doesn't happen. The navigation bar stays responsive. So, the problem only seems to happen inside a popover. I've also noticed that if I do the search but click on an item in the search results which ends up loading something into the "detail view" of the split view and dismissing the popover, and then come back to the popover and then click the Cancel button for the search, the navigation bar is responsive. My application is a universal app and uses the same tab bar controller in the iPhone interface and it works there without this issue. As I mentioned above, I can easily reproduce this with a new project. Here are the steps if you want to try it out yourself: start new project - split view create new UITableViewController class (i named TableViewController) uncomment out the viewDidLoad method as well as the rightBarButtonItem line in viewDidLoad (so we will have an Edit button in the navigation bar) enter any values you want to return from numberOfSectioinsInTableView and numberOfRowsInSection methods open MainWindow.xib and do the following: please note that you will need to be viewing the xib in the middle "view mode" so you can expand the contents of the items drag a Tab Bar Controller into the xib to replace the Navigation Controller item drag a Navigation Controller into the xib as another item under the Tab Bar Controller delete the other two view controllers that are under the Tab Bar Controller (so, now our tab bar has just the one navigation controller on it) inside the navigation controller, drag in a Table View Controller and use it to replace the View Controller (Root View Controller) change the class of the new Table View Controller to the class created above (TableViewController for me) double-click on the Table View under the new Table View Controller to open it up (will be displayed in the tab bar inside the split view controller) drag a "Search Bar and Search Display" onto the table view save the xib run the project in simulator while in portrait mode, click on the Root List button to bring up popover notice the Edit button is clickable click in the Search box - we go into search mode click the Cancel button to exit search mode notice the Edit button no longer works So, can anyone help me figure out why this is happening? Thanks, Mark

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  • Android (Milestone/Droid): View.OnKeyListener not working correctly?

    - by Ice09
    I am using a simple EditText and register an View.OnKeyListener. Some GUI changes should happen (fading in/out of views) when certain conditions for the EditView text apply. In the emulator, this works as expected. On the Motorola Droid/Milestone, the listener does not work, only after pressing DEL, the listener is called the first time and always afterwards when activating the number input, the listener works correctly Note: I deactivated the suggestions with TYPE_TEXT_FLAG_NO_SUGGESTIONS and used the IME action IME_ACTION_GO to have a workaround for this (otherwise the user could not "start" a request).

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  • Developing Applications that can interact Lotus Notes (.nsf) databases

    - by sridhar-voleti
    Hi, I am a c# developer interested in developing a windows application to connect to a lotus notes .nsf db and display the information like 1) Number of forms 2) Number of views 3) Script Libraries 4) Actions 5) Agents Once I do this, I want to read each form and the UI elements available in each form and generate an equivalent .aspx file. I have lotus notes client and designer installed on my system. Could some one suggest how to proceed with this requirement? Thanks a lot in advance Sridhar

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  • django accepting GET parameters

    - by tipu
    I want the index page to accept parameters, whether it be mysite.com/search/param_here or mysite.com/?search=param_here I have this in my URL patterns but I can't get it to work.. any suggestions? urlpatterns = patterns('', (r'^$/(?P<tag>\w+)', 'twingle.search.views.index'), )

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  • Guidelines for calling controller methods in helper modules?

    - by keruilin
    Few questions: Is it possible to call a controller method in a helper module (e.g., application helper)? If so, how does the helper handle the rendering of views? Ignore it? In what instances would you want to call a controller method from a helper? Is it bad practice? Do you have any sample code where you're calling controller methods in helper?

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  • Cannot use "image.save" on django

    - by zjm1126
    My error is: IOError at /mytest/photo/upload/ [Errno 2] No such file or directory: u'/mytest/photo/upload/2.png' And my view is: UPLOAD_URL = '/mytest/photo/upload/' def upload(request): buf = request.FILES.get('photo', None) print buf if buf: #data = buf.read() #f = StringIO.StringIO(data) image = Image.open(buf) #image = image.convert('RGB') name = '%s%s' % (UPLOAD_URL, buf.name) image.save(file(name, 'wb'), 'PNG') return HttpResponse('ok') return HttpResponse('no') And my urls.py is: urlpatterns = patterns('mytest.views', url(r'^photo/upload/$','upload',name="") ) How can I fix this?

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  • is any drag and drop facility in Black Berry

    - by sairam333
    Hi all i am new to black berry.I have Experience on Android .Now i want to learn Black berry .In android an application contain res folder in that we add the lay out in xml form and we can create the forms easily using views and lay outs. In the same way is there any facility in black berry?please give me some suggestions to prepare forms in black berry .

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  • Running out of memory with UIImage creation on an offscreen Bitmap Context by NSOperation

    - by sigsegv
    I have an app with multiple UIView subclasses that acts as pages for a UIScrollView. UIViews are moved back and forth to provide a seamless experience to the user. Since the content of the views is rather slow to draw, it's rendered on a single shared CGBitmapContext guarded by locks by NSOperation subclasses - executed one at once in an NSOperationQueue - wrapped up in an UIImage and then used by the main thread to update the content of the views. -(void)main { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc]init]; if([self isCancelled]) { return; } if(nil == data) { return; } // Buffer is the shared instance of a CG Bitmap Context wrapper class // data is a dictionary CGImageRef img = [buffer imageCreateWithData:data]; UIImage * image = [[UIImage alloc]initWithCGImage:img]; CGImageRelease(img); if([self isCancelled]) { [image release]; return; } NSDictionary * result = [[NSDictionary alloc]initWithObjectsAndKeys:image,@"image",id,@"id",nil]; // target is the instance of the UIView subclass that will use // the image [target performSelectorOnMainThread:@selector(updateContentWithData:) withObject:result waitUntilDone:NO]; [result release]; [image release]; [pool release]; } The updateContentWithData: of the UIView subclass performed on the main thread is just as simple -(void)updateContentWithData:(NSDictionary *)someData { NSDictionary * data = [someData retain]; if([[data valueForKey:@"id"]isEqualToString:[self pendingRequestId]]) { UIImage * image = [data valueForKey:@"image"]; [self setCurrentImage:image]; [self setNeedsDisplay]; } // If the image has not been retained, it should be released together // with the dictionary retaining it [data release]; } The drawLayer:inContext: method of the subclass will just get the CGImage from the UIImage and use it to update the backing layer or part of it. No retain or release is involved in the process. The problem is that after a while I run out of memory. The number of the UIViews is static. CGImageRef and UIImage are created, retained and released correctly (or so it seems to me). Instruments does not show any leaks, just the free memory available dip constantly, rise a few times, and then dip even lower until the application is terminated. The app cycles through about 2-300 of the aforementioned pages before that, but I would expect to have the memory usage reach a more or less stable level of used memory after a bunch of pages have been already skimmed at fast speed or, since the images are up to 3MB in size, deplete way earlier. Any suggestion will be greatly appreciated.

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  • iPad App: Simple Launch View -> SplitViewController

    - by Aurimas
    Hello, I want to create an iPad app that would have a simple view at launch with buttons to different components of the app. Each button then could open up a splitviewcontroller type views. (Interface similar to WebMD: http://itunes.apple.com/us/app/webmd-for-ipad/id373185673?mt=8) I was reading online that Apple does not allow splitviewcontroller inside other controllers (like NavigationController). How do I solve this? Thanks!

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  • How to add controls to a Tab Layout in Andriod?

    - by chobo2
    Hi I am following this tutorial http://developer.android.com/intl/de/guide/tutorials/views/hello-tabwidget.html and have completed it. Now I would actually like to add you know some controls to these tabs like textboxes(text edit). How do I do this? I go to my mail.xml using eclipse as my ide and go to layout view and I now get a NullPointerException so I can't even drag stuff onto the layout anymore. Thanks

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  • google-app-engine: json module

    - by fmsf
    Hey i'm using JSON with appengine. I'm using json for comunication, so in the python side i have import json the error i'm getting is this: <class 'django.core.exceptions.ViewDoesNotExist'>: Could not import views.ganttapp. Error was: No module named json In my stand alone this works great, is there any problem with json on the app engine? or should I use another module? I dunno if you can open this but here it goes: http://ganttapp.appspot.com/newgantt you can find the error here

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