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• algorithm for image comparison

  - by Rajnikant

  Please consider following use case, I have one bigger image, lets called is master image. Now from some where else, I am getting one small image. I want to check whether this small image is subset of master image or not. important points are, smaller image might have different file format, smaller image might captured from comparatively different view. smaller image may have different light intensity. At this stage of algorithm/computation advancement, which level of accuracy I could expect? Any algorithm/open source implementation that would have such implementation? Thanks, Rajnikant

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• Override delete behaviour in NHibernate

  - by David

  Hi all In my application users cannot truly delete records. Rather, the record's Deleted field gets set to 1, which hides it from selects. I need to maintain this behaviour and I'm looking into whether NHibernate is appropriate for my app. Can I override NHibnernate's delete behaviour so that instead of issuing DELETE statements, it issues UPDATES, as described above? I would obviously also need to override its SELECT behaviour to include the 'AND Deleted = 0' clause. Or read from a view instead. I dunno. TIA for your advice. David

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• Django, making a page activate for a fixed time

  - by Hellnar

  Greetings I am hacking Django and trying to test something such as: Like woot.com , I want to sell "an item per day", so only one item will be available for that day (say the default www.mysite.com will be redirected to that item), Assume my urls for calling these items will be such: www.mysite.com/item/<number> my model for item: class Item(models.Model): item_name = models.CharField(max_length=30) price = models.FloatField() content = models.TextField() #keeps all the html content start_time = models.DateTimeField() end_time = models.DateTimeField() And my view for rendering this: def results(request, item_id): item = get_object_or_404(Item, pk=item_id) now = datetime.now() if item.start_time > now: #render and return some "not started yet" error templete elif item.end_time < now: #render and return some "item selling ended" error templete else: # render the real templete for selling this item What would be the efficient and clever model & templete for achieving this ?

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• WPF: "Items collection must be empty before using ItemsSource."

  - by Zack Peterson

  I'm trying to get images to display in a WPF ListView styled like a WrapPanel as described in this old ATC Avalon Team article: How to Create a Custom View. When I try to populate the ListView with a LINQ-to-Entities queried collection of ADO.NET Entity Framework objects I get the following exception: Exception Items collection must be empty before using ItemsSource. My code… Visual Basic Private Sub Window1_Loaded(...) Handles MyBase.Loaded ListViewImages.ItemsSource = From g In db.Graphic _ Order By g.DateAdded Ascending _ Select g End Sub XAML <ListView Name="ListViewImages" SelectionMode="Single" ItemsSource="{Binding}"> <local:ImageView /> </ListView> I put a breakpoint on that line. ListViewImages.ItemsSource is Nothing just before the LINQ assignment.

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• Mvc relative path using virtual directory..help!

  - by kevin

  When i drag and drop my image/script/css file into my view, relative path will automatically use to refer on the files. example: <link href="../../Content/style.css" rel="stylesheet" type="text/css" /> <script src="../../Scripts/jquery-min.js" type="text/javascript"></script> <img src="../../Images/logo.jpg" /> It is working fine when i host it on my root directory, but if i'm using virtual directory then only my css file able to refer correctly, the rest will return 404...as it will refer to http://{root}/Images/logo.jpg rather than http://{root}/{virtual directory}/Images/logo.jpg But why css file is working? and how to specify the relative path correctly for both root & virtual directory cases?

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• codeigniter site, swfobject not fully loading swf

  - by Joe

  I am having a strange problem. I have a view that is supposed to load a swf. The swf was compiled with Flex and the mxml preloader displays but it loads a blank screen. When I path directly to the file it loads fully and works fine. Other possibly relevant information: The swf makes calls through GET requests to the database the site is built with codeigniter I'm using swfobject to load the swf you can see it in all it's busted glory here: http://thetoad.flattoads.com:16080/~iopdev/CI/index.php?c=moodtotem&m=index I'm going bonkers over this!

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• Using TortoiseHg’s Repository explorer

  - by krebstar

  I posted this question on superuser.com but I wasn't sure if it was appropriate there.. Anyway: Hi, I'm coming from a TortoiseSVN background and decided to give TortoiseHg a try.. One thing I got really used to with TortoiseSVN was the SVN Repo-Explorer, which worked quite similarly to Windows Explorer.. However, when I tried to use TortoiseHg's Repository Explorer, what I got was something else, it was more like TortoiseSVN's Show Log. It showed me what the recent commits were and what files were changed and even had nifty graphs.. However, I'm still left wanting for TortoiseSVN's Repo-Explorer.. Does TortoiseHg have anything like this? How am I supposed to poke around the Repository if I can only view changed stuff? Thanks, kreb

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• iPad popover - resignFirstResponder issue

  - by mosdev

  I have two text fields email and password. The following code works fine when the fields are presented on a regular view but when they are on a popover, the resignFirstResponder does not work (becomeFirstResponder works). textFieldsShouldReturn was called for both fields. Any idea if I am missing something? Thanks! - (BOOL)textFieldShouldReturn:(UITextField *)theTextField { if (theTextField == email) { [password becomeFirstResponder]; return NO; } [theTextField resignFirstResponder]; return NO; }

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• Compilation of latex file

  - by Tim

  Hi, I am compiling a latex file on a server and download from there the generated dvi, ps and pdf files to view them. The latex file by \includegraphics includes some figure files which are not on my local machine. I found that dvi file generated by latex command does not show the figures after dowloaded to my local, but ps file generated by dvips -Ppdf have the figures, and pdf file generated by either ps2pdf or pdflatex seem not have the figures again. Is it because the figures are not actually embeded as part of the dvi and pdf files by those compilation commands? How to actually embed figures so we can only export the document files to other machines? are the case for tables in separated tex files included into main tex file by /input and the case for style files included by \usepackage similar to the above case for figure files included by \includegraphics ? Thanks and regards!

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• iPad UIColor Saturation Issues

  - by Carter Allen

  I am trying to draw a UIColor on the screen of a view-based app, and I am trying to do so using HSB. It is absolutely necessary for me to use HSB in this case. I can create a UIColor object with any S value from 0.0f to 0.75f, but past that the numerical changes have no effect on the actual saturation displayed. I need it to be 1.0f, but it is still using 0.75f. Any ideas on why it is doing that, and how I can make it work?

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• How to display a two column ListView in Android?

  - by Josemalive

  Hi, I have an android application that shows a grid view that shows: 1 2 3 4 GridView gridview=(GridView)findViewById(R.id.GridView_test); DataBaseHelper dbhelper=new DataBaseHelper(this); ArrayList<String> test=new ArrayList<String>(5); backlinksadapter.add("1"); backlinksadapter.add("2"); backlinksadapter.add("3"); backlinksadapter.add("4"); ArrayAdapter mAdapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, test); gridview.setAdapter(mAdapter); By the moment is working, but i would like to show foreach line of the grid, 2 columns with the values of a 2 dimensional array (something like the GridView in ASP.Net - as datasource -). I would like to show: 1 | Person 1 2 | Person 2 3 | Person 3 4 | Person 4 Any idea?

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• DataAnnotation error message

  - by user281180

  I have the following code; [RegularExpression(@"^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$", ErrorMessage = "Invalid Email Address")] public string Email { get; set; } In my view I have: <tr><td>Email</td><td><%=Html.TextBox("Email", Html.Encode(Model.Email), new { Class = "edit_control" })%></td><td><%= Html.ValidationMessageFor(model => model.Email)%></td></tr> My problem is when I insert an invalid email, it still saves. If I let other required fields empty then the message is displayed. Else, if this is the only field with an error, the message doesn`t get displayed. I want it to display the message and not save the form values.

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• Why does [NSOutlineView clickedRow] always return -1?

  - by jxpx777

  I have a fairly pedestrian non-editable NSOutlineView setup. In the bindings for the outline view, I have set the binding to my file's owner (MyDocument FWIW) with a selector of outlineViewWasDoubleClicked The method exists and is called, but when I call -clickedRow it consistently returns -1 rather than the row number of the row that I double clicked to trigger the method. My _outlineView is an IBOutlet and I've verified that it is hooked up correctly by using -selectedRow for the method rather than -clickedRow (I would rather use -clickedRow though because it seems unintuitive for the user to have a row selected, double click another row to do something with it and have the method triggered with the row they had selected.) My best guess right now is that the -clickedRow value is getting cleared out before my method fires, but I don't know where or what might be gobbling it up. Thanks in advance for any help.

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• MVC pattern and State Machine

  - by topright

  I think of a game as a state machine. Game States separate I/O processing, game logic and rendering into different classes: while (game_loop) { game->state->io_events(this); game->state->logic(this); game->state->rendering(); } You can easily change a game state in this approach. MVC separation works in more complex way: while (game_loop) { game->cotroller->io_events(this); game->model->logic(this); game->view->rendering(); } So changing Game States becomes error prone task (switch 3 MVC objects, not 1). What are practical ways of combining these 2 concepts?

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• Is there a better way of designing zend_forms rather than using decorators?

  - by Hanseh

  Hi, I am currently using zend_decorators to add styles to my form. I was wondering if there is an alternative way of doing it? It is a bit difficult to write decorators. I would love the casual one using divs and css style : <input type="submit" class="colorfulButton" > It is much simpler rather than set a decorator for a certain control and add it. Since it requires creating a decorator for each style implementation and adding it up with the control. Will view helpers to the trick?

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• overflow hidden not working on touch device

  - by Jesper Ong

  I have a problem with overflow:hidden on a touch device. Basically I have my html and body on overflow:hidden. With a contact form outside(bottom) of the window. On clicking a button this form will animate in. This is so far working great on desktop browsers. But on touch devices, I seem to be able to scroll down and view the form. I can't seem to find solutions after much googling. Is there anyway to force overflow:hidden on touch devices? Any help much appreciated!

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• UISearchbar clearButton forces the keyboard to appear

  - by DASKAjA

  I have a UISearchBar which acts as a live filter for a table view. When the keyboard is dismissed via endEditing:, the query text and the gray circular "clear" button remain. From here, if I tap the gray "clear" button the keyboard reappears as the text is cleared. How do I prevent this? If the keyboard is not currently open I want that button to clear the text without reopening the keyboard. There is a protocol method that gets called when I tap the clear button. But sending the UISearchBar a resignFirstResponder message doesn't have any effect on the keyboard.

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• Targetting DataTemplate for only on certain views

  - by huseyint

  I have a DataTemplate inside a global/shared ResourceDictionary like this which targets a DataType: <DataTemplate DataType="{x:Type foo:Bar}"> <!-- My DataTemplate visual tree goes here... --> </DataTemplate> This DataTemplate replaces my all foo:Bar types on all my Views (UserControls/Windows). What I want to do is to apply this template to only certain views, keeping the other views are not affected by this DataTemplate. I can copy this DataTemplate to Resources sections of each of these view, but I don't want to copy/paste the contents of the DataTemplate which would result in maintenance headaches.

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• How get all calendar entries for a given using the Notes.Jar for Java

  - by vikramjb

  I am working on a simple java code to extract all calendar entries for a given date. I know it possible using Domingo but I would like to use only Notes.jar for this purpose. It is possible for me to create a session based on a given credentials and get the calendar object. I am looking to extract the current running notes session and use that session object to open the calendar view in the mail file and start playing with it. But I am not able to get it working. Anybody have any idea or links on this ?

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• Is there anyway I can fix a webview?

  - by Legend

  I am trying to load a webpage into a sample webview that I created: public class HelloWebview extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); WebView webview; webview = (WebView) findViewById(R.id.webview); webview.getSettings().setDefaultZoom(ZoomDensity.FAR); webview.setHorizontalScrollBarEnabled(false); webview.setVerticalScrollBarEnabled(false); webview.getSettings().setJavaScriptEnabled(true); webview.loadUrl("http://10.0.2.2/index.html"); } } Initially, I had a problem with the scrollbars so I added the two lines to disable them. Now, I am still able to pan around the webpage though the scroll bars are not visible. How can I fix the view so that I am not able to pan (or scroll) the webpage? By panning, I mean moving around the webpage with an onTouch event.

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• Spring Weblfow 2 - Double Submit

  - by John W.

  Hello All, I am investigating a possible issue with double submits and I am looking at the possibilty of a double submit from a webflow execution. I have read many times that webflow will handle double submits, there are plenty references here. However I then came across I a forum response on the spring source forums contradicting what I read saying, SWF synchronizes on the conversation. Only one request will be processed at a time per conversation. Take note that if you're using snapshots, then it's possible repeatedly clicking on the submit button will generate a second request. I would recommend setting history to invalidate or discard in the transition from your view-state. We do have snapshots enabled but the book notes that using snapshots actually allows to solve the double submits. Does anyone have any insight on this? Thanks.

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• How is Magento when it comes to adding custom functionality?

  - by ohsnapy

  hi, How is working with Magento when it comes to adding custom functionality? From an outsiders view the framework looks very complicated and it's hard to gage what is and is not possible. What are your experiences? Is it a difficult framework to get it to do what you want? Are there things that simply cannot be customized in Magento? How difficult is it to manage customizations when upgrading to latest versions,etc.. Any feedback/personal experiences would be great. Examples of highly customized Magento sites would be great too. Thanks for your help.

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• How to temporarily disable read-only 2nd level cache hibernate strategy in Grails ?

  - by fabien7474

  In my grails application, some of my domain classes will never be changed by Users. However, some maintenance work is sometimes necessary, and administrator should be able to create/edit few instances from time to time (let's say twice a year). I would like to set a read-only 2nd level cache strategy for these domain classes (static mapping = { cache usage: 'read-only' } ) AND I would like to be able to 'disable' (in very particular situations) the read-only strategy in order to udate some instances via Grails scaffolding edit view. Is it possible? What do you advise me to do? EDIT: The solution I am implementing is a mix of Pascal and Burt answers (see comments). Both answers are great and helpful. So I got a dilemna for choosing the accepted answer! Anyway, thank you.

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• Drupal Custom Form with Filters

  - by dallasclark

  I'm displaying cars on a page created with a view and displays. I want to be able to create a form on the home page to allow people to select the 'make', which will then update the 'models' list based on the 'make' the user selects, 'year' to and from, and 'amount' to and from. What the user selects will of course alter the list of used cars, whether that's on the existing used cars page or a new page. I would be happy to create a custom module if required, just need some direction. Thanks !

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• How to use both DataSource and DataSourceID in gridview

  - by jame

  work on C# asp.net vs05.i need to save some value and show them on the gridview.So under the button event i write a code that save value ,and show on gridview.I can save value but problem occur when show on gridview.So i use the DataSource .I also set the GridviewTask-->Choose Data Source--> DataSourceID ,because user need to edit information set on the page. after use the DataSourceID show this error message : Both DataSource and DataSourceID are defined on 'GridView2'. Remove one definition. How can i use the both in one grid view?if i can not? then how to give user this facility that they can edit information set on the grid with out use any other contorl.

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