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  • Object mapping in objective-c (iphone) from JSON

    - by freshfunk
    For my iPhone app, I'm consuming a RESTful service and getting JSON. I've found libraries to deserialize this into an NSDictionary. However, I'm wondering if there are any libraries to deserialize the JSON/NSDictionary/Property List into my object (an arbitrary one on my side). The java equivalent would be the object-relational mappers although the sort of object mapping I'm looking for is relatively straightforward (simple data types, no complex relationships, etc.). I noticed that Objective-C does have introspection so it seems theoretically possible but I haven't found a library to do it. Or is there a simple way to load an object from an NSDictionary/Property List object that doesn't require modification every time the object changes? For example: { "id" : "user1", "name" : "mister foobar" "age" : 20 } gets loaded into object @interface User : NSObject { NSString *id; NSString *name; int *age; }

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  • Showing items as images in a WPF ListView

    - by Joan Venge
    So I have binded a List to a ListView where the List has items of type Album, where it has lots of properties including .Cover, which I is an image on disk. Well since I don't know what type of image is needed and how they have to be loaded (I only know using Image types for Winforms), I don't know the type yet. Can someone show or post me a quick sample where it shows this sort of items being shown as images of a certain fixed size using their .Cover property? In essence this would show: What type .Cover should be How to open images from disk for WFP (assuming it's different than Winforms image loading) How to show them on a ListView as images of a certain fixed size, scaling the images if necessary

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  • What is the best way of doing this?

    - by NewSOuser
    Hey, I am wondering how exactly the below pagination systems are set up? In terms of the how the data is displayed, for instance, does BuySellAds load all results in from database and then paginate that data so filter can be done easier? or, do they call the database every time a new page is loaded and then grab the info and display it? I really would like to know how both BuySellAds and Nike make their pagination systems, since I have to make a similar system that has many filters and options to easily sort through the data from a database. I want to accomplish this with php and jquery if that's what I even need to use. Here is what I am talking about so you can experience it for yourself: BuySellAds store.nike.com Any info/suggestions would be great. Thanks for your input.

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  • pyglet and animated gif

    - by wtzolt
    Hello, I have a message box pop up when a certain operation is being executed sort of "wait..." window and I want to have a "loading" *.gif animation there to lighten up the mood :) Anyways I can't seem to figure out how to make this work. It's a complete mess. I tried calling through class but i get loads of errors to do with pyglet itself. class messageBox: def __init__(self, lbl_msg = 'Message here', dlg_title = ''): self.wTree = gtk.glade.XML('msgbox.glade') self.wTree.get_widget('label1').set_text(lbl_msg) self.wTree.get_widget('dialog1').set_title(dlg_title) ????sprite = pyglet.sprite.Sprite(pyglet.resource.animation("wait.gif")) ????self.wTree.get_widget('waitt').set_from_file(sprite) [email protected] ????def on_draw(): ???? win.clear() ???? sprite.draw() handlers = { 'on_okbutton1_clicked':self.gg } self.wTree.signal_autoconnect( handlers ) self.wTree.get_widget("dialog1").set_keep_above(True) def done(self): self.wTree.get_widget('dialog1').destroy() def gg(self,w): self.wTree.get_widget('dialog1').destroy() --------- @yieldsleep def popup(self, widget, data=None): self.msg = messageBox('Wait...','') ?what to call here? yield 500 print '1' yield 500 print '2' yield 500 print '3' self.msg.done() self.msg = messageBox('Done! ','') yield 700 self.msg.done()

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  • Need help understanding Generics, How To Abstract Types Question.

    - by kmacmahon
    I could use some really good links that explain Generics and how to use them. But I also have a very specific question, relater to working on a current project. Given this class constructor: public class SecuredDomainViewModel<TDomainContext, TEntity> : DomainViewModel<TDomainContext, TEntity> where TDomainContext : DomainContext, new() where TEntity : Entity, new() public SecuredDomainViewModel(TDomainContext domainContext, ProtectedItem protectedItem) : base(domainContext) { this.protectedItem = protectedItem; } And its creation this way: DomainViewModel d; d = new SecuredDomainViewModel<MyContext, MyEntityType>(this.context, selectedProtectedItem); Assuming I have 20 different EntityTypes within MyContext, is there any easier way to call the constructor without a large switch statement? Also, since d is DomainViewModel and I later need to access methods from SecuredDomainViewModel, it seems I need to do this: if (((SecuredDomainViewModel<MyContext, MyEntityType>)d).CanEditEntity) But again "MyEntityType" could actually be one of 20 diffent types. Is there anyway to write these types of statements where MyEntityType is returned from some sort of Reflection?

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  • Need help understanding Generics, How To Abstract Types Question.

    - by kmacmahon
    I could use some really good links that explain Generics and how to use them. But I also have a very specific question, relater to working on a current project. Given this class constructor: public class SecuredDomainViewModel<TDomainContext, TEntity> : DomainViewModel<TDomainContext, TEntity> where TDomainContext : DomainContext, new() where TEntity : Entity, new() And its creation this way: DomainViewModel d; d = new SecuredDomainViewModel<MyContext, MyEntityType>(this.context, selectedProtectedItem); Assuming I have 20 EntityTypes within MyContext, is there any easier way to call the constructor without a large switch statement? Also, since d is DomainViewModel and I want to access methods for SecuredDomainViewModel, it seems I need to do this: if (((SecuredDomainViewModel<MyContext, MyEntityType>)d).IsBusy) But again "MyEntityType" could actually be one of 20 types. Is there anyway to write these types of statements where MyEntityType is returned from some sort of Reflection?

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  • QT's QGraphicsview clickable icon on screen

    - by goodwince
    I'm working on a project with QT and am trying to draw icons from a database. I have auxiliary information in the table that I would like to display if the user chooses to see it (i.e. the x,y of the icon and some other options from database). I am debating on would it be better to go through and just redraw all the icons with this information added, or do some sort of looping through the icons and setting some value to true to display the information. Thanks in advance.

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  • What does the caret operator in Python do?

    - by Fry
    I ran across the caret operator in python today and trying it out, I got the following output: >>> 8^3 11 >>> 8^4 12 >>> 8^1 9 >>> 8^0 8 >>> 7^1 6 >>> 7^2 5 >>> 7^7 0 >>> 7^8 15 >>> 9^1 8 >>> 16^1 17 >>> 15^1 14 >>> It seems to be based on 8, so I'm guessing some sort of byte operation? I can't seem to find much about this searching sites other than it behaves oddly for floats, does anybody have a link to what this operator does or can you explain it here?

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  • DataGridView row added event

    - by p4bl0.666
    Hi all, I'm using a DataGridView and I bind a List to the DataSource. I already have the right columns and I map exactly the fields. What I'm trying to do is handling a sort of RowAdded or RowDataBound (like in aspx GridView) event. The only event that I found is RowsAdded but no matter how many items I have, it is fired only 4 times the first time i bound, and twice the other times, with values e.RowCount:1 e.RowIndex:0 e.RowCount:[n-1] e.RowIndex:1 *where n is the number of my items is there a way I can get to a handle for each item?

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  • What is the correct Qt idiom for exposing signals/slots of contained widgets?

    - by Tyler McHenry
    Suppose I have a MyWidget which contains a MySubWidget, e.g. a custom widget that contains a text field or something. I want other classes to be able to connect to signals and slots exposed by the contained MySubWidget instance. Is the conventional way to do this: Expose a pointer to the MySubWidget instance through a subWidget() method in MyWidget Duplicate the signals and slots of MySubWidget in the MyWidget class and write "forwarding" code Something else? Choice 1 seems like the least code, but it also sort of breaks encapsulation, since now other classes know what the contained widgets of MyWidget are and might become dependent on their functionality. Choice 2 seems like it keeps encapsulation, but it's a lot of seemingly redundant and potentially convoluted code that kind of messes up the elegance of the whole signals and slots system. What is normally done in this situation?

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  • Printing PDFs Server-side using Acrobat Reader from ASP.NET

    - by Chris Roberts
    Hi, I have been presented with a problem which requires me to print PDF files from a server as part of an ASP.NET web service. The problem is further complicated by the fact that the PDF files I have to print can ONLY be printed using Adobe Reader (they were created using Adobe LiveCycle and have some strange protection in them). This piece of code seems to do the trick in the Visual Studio development web server, but doesn't do anything when the site's running in IIS. I'm assuming this is probably some sort of permissions issue!? I know this is a FAR from ideal thing to be trying to do, but I haven't really got much choice! Any ideas would be greatly appreciated! Dim starter As ProcessStartInfo Dim Prc As Process ' Pass File Path And Arguments starter = New ProcessStartInfo("c:\program files\...\AcroRd32.exe", "/t ""test.pdf"" ""Printer""") starter.CreateNoWindow = True starter.RedirectStandardOutput = True starter.UseShellExecute = False ' Start Adobe Process Prc = New Process() Prc.StartInfo = starter Prc.Start()

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  • ADD COLUMN to sqlite db IF NOT EXISTS - flex/air sqlite?

    - by Adam
    I've got a flex/air app I've been working on, it uses a local sqlite database that is created on the initial application start. I've added some features to the application and in the process I had to add a new field to one of the database tables. My questions is how to I go about getting the application to create one new field that is located in a table that already exists? this is a the line that creates the table stmt.text = "CREATE TABLE IF NOT EXISTS tbl_status ("+"status_id INTEGER PRIMARY KEY AUTOINCREMENT,"+" status_status TEXT)"; And now I'd like to add a status_default field. thanks! Thanks - MPelletier I've add the code you provided and it does add the field, but now the next time I restart my app I get an error - 'status_default' already exists'. So how can I go about adding some sort of a IF NOT EXISTS statement to the line you provided?

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  • Python: Random is barely random at all?

    - by orokusaki
    I did this to test the randomness of randint: >>> from random import randint >>> >>> uniques = [] >>> for i in range(4500): # You can see I optimistic. ... x = randint(500, 5000) ... if x in uniques: ... raise Exception('We duped ' + str(x) + ' at iteration number ' + str(i)) ... uniques.append(x) ... Traceback (most recent call last): File "(stdin)", line 4, in (module) Exception: 'We duped 4061 at iteration number 67 I tried about 10 times more and the best result I got was 121 iterations before a repeater. Is this the best sort of result you can get from the standard library?

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  • android: How to set a listener that fires when my ViewFlipper shows a new child

    - by Joseph Cheek
    Hi Android gurus, I have a ViewFlipper for which I want a listener to fire when the child displayed is changed. I have set an OnFocusChangeListener to the ViewFlipper but it never fires when I flip from child 0 to child 1 or vice-versa. The ViewFlipper contains two RelativeLayouts and I have tried setting OnFocusChangeListeners for those but I get a ClassCastException when I try to set it. Here's my code: RelativeLayout songsLayout = (RelativeLayout) findViewById(R.id.song_page_layout); songsLayout.setOnFocusChangeListener(new OnFocusChangeListener() { public void onFocusChange(View view, boolean hasFocus) { showPopUp("View " + view.getId() + " now has focus: " + hasFocus); } } ); R.is.song_page_layout is one of my RelativeLayouts and showPopUp() is a function I use to show, well, popups. Does anyone have working code for some sort of trigger that fires when a ViewFlipper changes which child is displayed?

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  • Identify valid server in XML-RPC request using PHP

    - by Ian
    I'm working on a client-server system, where the client makes XMLRPC requests to the server. The client part of the system is handed to a third-party, meaning that he could eventually modify the code or re-route the xmlrpc requests. Now, hoping the third-party won't modify the code, I need a way to make sure that the server the client script is contacting is actually MY server (cause, the person could somehow reroute the requests to his own server where he could make up some xml responses, not what I want). Is there a way to identify a server using PHP? Some sort of SSL connection? Hope you guys understand me. Cheers.

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  • Integrating my website with BlogEngine.Net

    - by Kabeer
    Hello. I am developing a site (ASP.Net based) that, besides other features enables the users to blog as well. I am thinking of integrating BlogEngine.Net to my portal. From whatever little I have analyzed, integrating at presentation layer will be far more challenging in comparison to doing so at business layer. That means (I guess) I will have to use the BlogEngine.Core.dll in my application. I am looking for some sort of approval from the community, complimented with suggested do's and dont's. BTW, I find the business layer a bit intimidating (complex) as I want some basic & necessary features only.

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  • Toggle between "Extend these displays" and "Show desktop only on 1"

    - by Clayton Hughes
    I'm looking for a way to programmatically alter the video properties in Windows 7. I'd like to toggle the Multiple display state (as seen in Control Panel Appearances and Personalization Display Screen Resolution) between "Extend these displays" and "Show desktop only on 1". This is the sort of thing that I think is probably doable just by knowing the right Windows executable/dll to invoke with the right parameters and bundling that into a script or shortcut, but if so that information eludes me. Actual code solutions are fine, of course, but I'd like the change to be permanent and not just disable the other monitor(s) for the duration of the application.

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  • DB structure for Twitter home/Facebook wall?

    - by mathon12
    Basically a live feed of all your friends' recent posts. In a stupid sort of approach I think I'd start by building a query like: SELECT * FROM tblposts WHERE userid=friend_id_1OR userid=friend_id_2...... and so on Where friend_id_% is the userid of a friend from your friends list. But this must be a very inefficient way of doing it, right? Is there any faster way of doing this in MySQL? Maybe some clever DB schema? (I know FB uses Hadoob but I'm not experienced enough to go that far :( )

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  • Design for a machine learning artificial intelligence framework (community wiki)

    - by Lirik
    This is a community wiki which aims to provide a good design for a machine learning/artificial intelligence framework (ML/AI framework). Please contribute to the design of a language-agnostic framework which would allow multiple ML/AI algorithms to be plugged into a single framework which: runs the algorithms with a user-specified data set. facilitates learning, qualification, and classification. allows users to easily plug in new algorithms. can aggregate or create an ensemble of the existing algorithms. can save/load the progress of the algorithm (i.e. save the network and weights of a neural network, save the tree of a decision tree, etc.). What is a good design for this sort of ML/AI framework?

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  • jQuery UI Sortable - serialize multiple columns

    - by oshirowanen
    Dear stackoverflow experts, I have a little script which allows me to use jQuery to sort div tags nicely between 3 columns. The jQuery can be seen below: $(".column").sortable( { connectWith: '.column' }, { update: function(event, ui) { alert($(this).sortable('serialize')) } }); If I move an item from column 1 to column 2, it will display 2 alerts, showing the serialized data for the 2 affected columns. The problem is, I need to know the column ids too, so I can eventually save the data into a database. Right now, if it is possible to just display the column id in an alert but, that will be enough for me to continue. Any help will be greatly appreciated. Thanks

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  • A detail question when applying genetic algorithm to traveling salesman

    - by burrough
    I read various stuff on this and understand the principle and concepts involved, however, none of paper mentions the details of how to calculate the fitness of a chromosome (which represents a route) involving adjacent cities (in the chromosome) that are not directly connected by an edge (in the graph). For example, given a chromosome 1|3|2|8|4|5|6|7, in which each gene represents the index of a city on the graph/map, how do we calculate its fitness (i.e. the total sum of distances traveled) if, say, there is no direct edge/link between city 2 and 8. Do we follow some sort of greedy algorithm to work out a route between 2 and 8, and add the distance of this route to the total? This problem seems pretty common when applying GA to TSP. Anyone who's done it before please share your experience. Thanks.

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  • Getting Started with UDK

    - by Sean Edwards
    I've been trying for a couple of days now to learn UDK, but I seem to be stuck at making that leap to understanding how everything works together. I understand the syntax, that's all well and good, and I pretty much get how classes and .ini files interact. As for the API, I have the entire reference as pretty decent Doxygen-style HTML output. What I'm looking for is a sort of intermediate tutorial on game creation from scratch (as opposed to modding UT3 itself), more advanced than just learning language syntax, but not yet to the level of going through the API step by step. I'm looking for some guide to the structure of the internals - how GameInfo and PlayerController interact, where Pawn comes in, etc. - a way to visualize the big picture. Does anyone have a particular favorite intermediate-level tutorials (or set of tutorials) that they used when first learning UDK?

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  • JQuery IE7 Z-Index Bug

    - by Thomas
    I built a Jquery dropdown menu using this tutorial: http://noupe.indexsite.org/tutorial/drop-down-menu-jquery-css.html It works across browsers except for IE7 (shooooocking). There seems to be a z-index sorting problem and the drop down menu shows up under all of my other JQuery elements. Im not sure how to set the z-index so that it shows up on top. I have thoroughly googled the issue and it seems to be related to multiple 'position:relative' elements. I've messed with it for a few hours but I can't seem to sort it out. I have already tried defining z-index for all the different page elements but it doesn't seem t help the situation. You can check out the problem here: http://hardtopdepot.com/dev/index.html Any help would be really appreciated - thanks! Also, I know there are other IE7 issues, but Im pretty confident that I can solve those as they are standard IE padding/margins nonsense.

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  • How can I mark a group of changes/changesets in SVN, Hg, or Git

    - by sylvanaar
    I would like to mark an arbitrary group of commits/changesets with a label. Commit 1 *Mark 1 Commit 2 *Mark 2 Commit 3 Commit 4 *Mark 1 Commit 5 *Mark 2 The goal is to easily locate all the changes for a specific mark, and to have that grouping persisted in the VCS directly, as opposed to some outside system like a bug tracking system. The location and ordering of the marks needs to be arbitrary, and should be able to work with both committed/uncommitted and pushed/unpushed changes. In SVN the best way I know is to just edit the commit notes and add some sort of special text that you can search for e.g. "**Mark 1". Or just to make a fake edit and commit it and use its commit note to list all the included revisions. Is there a better solution for SVN? Are there equivalent or better solutions for Hg or Git?

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  • 301 htaccess redirect: add segment to old URL's

    - by Rick
    I'm trying to make sure old url's aren't broken after the site's URL structure has changed from this: http://www.domain.com/section/entry_name to this: http://www.domain.com/section/event_name/entry_name But to make it a bit more complex, I'm using the segments to sort entries, for example: http://www.domain.com/news/amazing_event/date/asc http://www.domain.com/videos/my_event/title/desc The new structure only effects one particular event (amazing_event) and should leave the other URL's alone. Where do I even begin to tackle this? My current .htaccess looks like: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ /index.php/$1 [L] Thanks - appreciate any tips.

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