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• Retro video games programming

  - by SebKom

  I just watched the Super Mario Bros. -1 World glitch in youtube and I really began wondering about the code behind those games. Which language was used? What about the OS for the video games consoles? Are there any website with resources about this subject? (I am a 90s video gamer so I am particularly interested about the programming behind those games but feel free to make this a wiki and include links to resources about video games programming in general, if you want)

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• Difficulties using custom control - RichTextEditor

  - by Chris

  I am working on a school project that uses ASP.NET. I found this TextEditor control ( http://blogs.msdn.com/kirti/archive/2007/11/10/rich-text-editor-is-here.aspx ) that I am trying to include but it isn't working. The error I am getting is: Error Rendering Control - TextEditor. An unhandled exception has occurred. Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index. I see this error when I go Design part of the editor. I just don't understand this error at all. Also I am a lil bit confused as there is no parameter called index. :( What I have done is reference the binary in my project and then on the page I am trying to use it have registered its namespace and assembly with this line: <%@ Register Assembly="RichTextEditor" Namespace="AjaxControls" TagPrefix="rtt" %> I then go ahead and try to add the control to the page with this line of code: <rtt:richtexteditor ID="TextEditor" Theme="Blue" runat="server" /> Any help would be much appreciated. I haven't done anything like add a custom control before.

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• Firefox doesn't show my CSS

  - by vtortola

  Hi, I have a strange problem, Firefox doesn't show the CSS of the page I'm doing, but Internet Explorer does. I have tried at home and at one of my friend's home, and it happens in both. But, if I go to the Firefox Web Developer toolbar (i have it installed) and select CSS=Edit CSS, then the styles appears appears in the page and in the editor! As soon I close it, they disappears again. I have no idea what the problem is :( Do you have any idea about what could be the problem? thanks in advance.

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• Store username and password persistent in windows mobile(6.0) app

  - by Stefan

  Hi I need some help developing my mobile app. I have to store user data permant (name, password), so what is the best way to do that? I dont know a special API for it, so where to store persistent data's on a windows phone? Maybe in the win mobile registry or inside a file? Or should I use a light database? Someone has experience with this? thx, Stefan

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• WYSIHAT Installation - not saving photos - Ruby on Rails

  - by bgadoci

  I just successfully installed WysiHat in my rails blog. Seems that the 'add a picture' feature is not working. It successfully allows me to find and select a picture from my desktop but upon clicking save, it does nothing. I also have Paperclip successfully installed. I am wondering if this may have something to do with it. Perhaps Paperclip is getting in the way, or, perhaps I need to connect Paperclip and WysiHat somehow. Any ideas? (let me know if I need to post any code).

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• Rendering HTML in Java

  - by ferronrsmith

  I am trying to create a help panel for an application I am working on. The help file as already been created using html technology and I would like it to be rendered in a pane and shown. All the code I have seen shows how to render a site e.g. "http://google.com". I want to render a file from my pc e.g. "file://c:\tutorial.html" This is the code i have, but it doesn't seem to be working. import javax.swing.JEditorPane; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JScrollPane; import javax.swing.SwingUtilities; import java.awt.Color; import java.awt.Container; import java.io.IOException; import static java.lang.System.err; import static java.lang.System.out; final class TestHTMLRendering { // ------------------------------ CONSTANTS ------------------------------ /** * height of frame in pixels */ private static final int height = 1000; /** * width of frame in pixels */ private static final int width = 1000; private static final String RELEASE_DATE = "2007-10-04"; /** * title for frame */ private static final String TITLE_STRING = "HTML Rendering"; /** * URL of page we want to display */ private static final String URL = "file://C:\\print.html"; /** * program version */ private static final String VERSION_STRING = "1.0"; // --------------------------- main() method --------------------------- /** * Debugging harness for a JFrame * * @param args command line arguments are ignored. */ @SuppressWarnings( { "UnusedParameters" } ) public static void main( String args[] ) { // Invoke the run method on the Swing event dispatch thread // Sun now recommends you call ALL your GUI methods on the Swing // event thread, even the initial setup. // Could also use invokeAndWait and catch exceptions SwingUtilities.invokeLater( new Runnable() { /** * } fire up a JFrame on the Swing thread */ public void run() { out.println( "Starting" ); final JFrame jframe = new JFrame( TITLE_STRING + " " + VERSION_STRING ); Container contentPane = jframe.getContentPane(); jframe.setSize( width, height ); contentPane.setBackground( Color.YELLOW ); contentPane.setForeground( Color.BLUE ); jframe.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); try { out.println( "acquiring URL" ); JEditorPane jep = new JEditorPane( URL ); out.println( "URL acquired" ); JScrollPane jsp = new JScrollPane( jep, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED ); contentPane.add( jsp ); } catch ( IOException e ) { err.println( "can't find URL" ); contentPane.add( new JLabel( "can't find URL" ) ); } jframe.validate(); jframe.setVisible( true ); // Shows page, with HTML comments erroneously displayed. // The links are not clickable. } } ); }// end main }// end TestHTMLRendering

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• Why does Opera parse my web page as XML?

  - by Adrian Grigore

  I just tried viewing my website http://www.logmytime.de/ in Opera (version 10.50) for the first time and for some reason it gives me an "xml parsing failed error" and refuses to display the web page. I can choose to "Reparse the document as HTML" and then the page works fine, but that's hardly a solution to my problem. The weird thing is that the error still occurs after setting a HTML (instead of XTHML) doctype: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> I checked the source output from the browser to make sure I did not make any mistake. I even viewed the same web page in Firebug and it shows a Content-Type of text/html; . So, why does Opera still try to parse my web page as XML? Thanks, Adrian

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• Latest evoluations in web content display

  - by srinannapa

  I Would like to know about the latest techiniques ,how the content is managed in web-pages ( I use Java technology). Probably i'm expecting like an RSS feed ,is one among them i can implement in my webpages. I need some more latest technologies of this kind to implement in web pages. Srinivas

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• Create a variable in .CSS file for use within that .CSS file

  - by Clay Nichols

  We have some "theme colors" that are reused in our CSS sheet. Is there a way to set a variable and then reuse it? E.g., .css OurColor: Blue { H1 color:OurColor; }

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• How can I make my Programming Logic stronger?

  - by Parth

  How can I make my Programming Logic stronger?

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• All Countries States Cities and Zipcodes in a Application

  - by Rishav Rastogi

  Is there a way getting all countries, states,cities zipcodes/ in one single database. I have been looking all over. I discovered geonames.org, which has I guess all of the content. But there is no way to fetch that data directly. I am using rails. If there any helpers or Plugins, it'd be great. It would be awesome if there is a complete resource in any parsable format which I can use to get this database in place. Please recommend if you any thanks I do have the iso country code list but no States for some countries. Thanks in advance

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• Displaying most popular posts on my blog - Ruby on Rails

  - by bgadoci

  I have created a simple blog application using Ruby on Rails, both of which I am new to. I am trying to get my most 'voted' posts to display in my /views/posts/index.html.erb view. Here are the basics. I have created a votes table and successfully allow a user to 'vote' for a post on the /views/posts/show.html.erb page. When they vote, it passes '1' to the votes table and I return the vote count via ajax to the same show page. Vote belongs_to :post and Post has_many :votes. I would like to display in /views/posts/index.html.erb the post title and the amount of times it has been voted for, ordered by posts with the highest vote count. Any ideas on how to do this?

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• Best Java 'framework' for LOW-END 3D Graphics?

  - by CodeJustin.com

  I've made my share of 2D games on various platforms but I have never developed a 3D game. I want to make a small "mmorpg". I already made my server in python and it works just fine with my flash 2D game but I decided I want to step it up and try out 3D. I want to make a 3D game for the web browser and I think Java might be a good choice for this. So basically I'm just looking for a straight forward and well documents 'framework' to make LOW-END 3D games. Keep in mind that I will be targeting peoples with very low-end PC's (plus my 3d modeling skills aren't great so I wouldn't mind hiding it somewhat, haha)

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• Asynchronous email processing in Java web application

  - by Denise

  Hi everyone, I would like to implement asynchronous email sending in my web application when users register for a new account. This is so that if there is a problem or delay in sending the email message (e.g. the mail server is down or the network connection to the mail server is slow) the user won't be kept waiting for the sending to complete. My web app is built using Spring and Hibernate's implementation of JPA. What would be the best and most reliable way for me to implement asynchronous email processing in this web application? I am thinking about persisting the email information in a database table which is then regularly polled by a Quartz (http://www.opensymphony.com/quartz/) scheduled job for updates and when it finds new unsent emails, it attempts to send them. Is this a reasonable way of implementing what I want? Thanks.

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• How Gridview co-operates with ObjectDataSource?

  - by sanjuro

  Hi, how Gridview co-operates with ObjectDataSource internally? When you set DataSourceID of GridView, assigned ObjectDataSource take care of such things as paging and sorting, but i don't have full control above databinding itself, on the other side when i set datasource of gridview in code-behind: protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { testGridView.DataSource = testObjectDataSource.Select(); testGridView.DataBind(); } } Now i have full control, but i have lost the advantage of comfort sorting and paging. And that co-operation between ObjectDataSource and Gridview became mystery for me. So can anybody explain me in details how ObjectDataSource and Gridview co-operates under the hood? I want to understand it in order to write my own smart code or own gridview that will mimic this co-operation. Many thanks for answers.

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• Recommendations for domain name registrar with API-support

  - by knorv

  I'm building a web application that needs to register domain names programmatically. What domain name registrars with API support fulfill the following requirements: Supports .COM Ideally cheap Reliable, trustworthy and should been so over an extended period of time What API-supporting domain name registrars have you used? What are your recommendations and why?

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• Django Models / SQLAlchemy are bloated! Any truly Pythonic DB models out there?

  - by Luke Stanley

  "Make things as simple as possible, but no simpler." Can we find the solution/s that fix the Python database world? from someAmazingDB import * class Task (model): title = '' isDone = False db.taskList = [] #or db.taskList = expandableTypeCollection(Task) #not sure what this syntax would be db['taskList'].append(Task(title='Beat old sql interfaces',done=False)) db.taskList.append(Task('Illustrate different syntax modes',True)) #at this point it should autosave #we should be able to reload the console and access like: >> from someAmazingDB import * >> print 'Done tasks:' >> for task in db.taskList: >> if task.done: >> print task 'Illustrate different syntax modes' I'm a fan of Python, webPy and Cherry Py, and KISS in general. We're talking automatic Python to SQL type translation or NoSQL. We don't have to totally be SQL compatible! Just a scalable subset or ignore it! Re:model changes, it's ok to ask the developer when they try to change it or have a set of sensible defaults. Here is the challenge: The above code should work with very little modification or thinking required. Why must we put up with compromise when we know better? It's 2010, we should be able to code scalable, simple databases in our sleep. If you think this is important, please upvote!

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• i18n and l10n web guidelines

  - by Konstantin Petrukhnov

  Is there any standards/guidelines/good practices for making websites with support of different content and UI? I'm interesting in articles/tutorials, that cover this topics. E.g. there going to be website for multiple countries. And user should have possibility to select UI and content languages separately. I assume that not all content will be translated, so there should be some mechanism for showing "default language" content for specific page. But again, should this "default" be per site, or per country? E.g. in some countries (Belgium, Finland) there are several official languages. If one language is unavailable, should default be second one, or English? Another example: many people prefer English UI (no mater of their origin), but want local scales (inches, meters) and local services. I don't care much about programing languages now, just want to understand what users are expected, what should be scope, and what are good practices.

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• Tiles vs. JSP includes

  - by Angus Croll

  We have a large web-app with hundreds of jsps pages. To avoid repeating markup up blocks we are considering making use of struts tiles. Now it seems messy to have a combination of both <t:insertTemplate template="/WEB-INF/templates/xxxxx.jsp"> and <%@ include file="xxxxx.jsp"%> statements so we are considering converting all includes statements to insertTemplates (whether or not the template includes any tile syntax) Has anyone had any experience with using tiles 100% for jsp includes?

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• How can I enjoy or avoid designing every web application I make ?

  - by schmrz

  I know this sounds silly, but I'm having huge problems (ok, not that huge, but still...) problems when I get an idea for a web project, small or big. The instant turn off is when I remember that I have to code the html/css by hand again and again. I like programming a lot more that designing web sites, and I simply don't enjoy designing them as much as I enjoy programming them. With that said, I also prefer simple and minimalistic designs. What is your approach in web design, how do you make it enjoyable (at least a little bit)?

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• Web user expectations

  - by Ash

  When designing a good Web GUI what expectations can we expect from an end user? I've come up with the following, but I wonder if there are any others which can suggest.. If I click on a hyperlink it will take me to another page/part of this page If I tick/untick a checkbox it might alter the page state (enable/disable elements) If I click on a button I expect it to do something to data. If I click on a button I expect something to happen immediately (either to the current page, or for me to be taken to another page) If I have clicked on a hyperlink and it has taken me to another page, I expect to be able to use the Back button to get back to the previous page in a state similar to that which I left it in If I change something in a form, I can change it back to its previous value if necessary Unless I click on the 'Submit' button nothing should happen to my data. If I bookmark/favourite a page then it should show the same related data each time I visit it If text is underlined and looks like a link, it should be a link and act as one The reasoning behind this question is more a 'UI from hell' one. For example I have come across pages which checking a tickbox next to a record will delete it, straight away, via ajax. To me that just seems wrong, a checkbox is a toggle - something which a delete operation definitely isn't!

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• jQuery show hide divs on radio buttons

  - by RyanP13

  I have got a group of radio buttons that when clicked need to display a corresponding unordered list. I have got as far as showing the correct list according to which radio button is clicked but cannot figure out how to hide the other lists that need to be hidden. So if i click the second benefits radion then the second 'spend' ul will display and the other 'spend' uls will hide. This is my jQuery: // hide all except first ul $('div.chevron ul').not(':first').hide(); // $('div.chevron > ul > li > input[name=benefits]').live('click',function() { // work out which radio has been clicked var $radioClick = $(this).index('div.chevron > ul > li > input[name=benefits]'); var $radioClick = $radioClick + 1; $('div.chevron > ul').eq($radioClick).show(); }); // trigger click event to show spend list var $defaultRadio = $('div.chevron > ul > li > input:first[name=benefits]') $defaultRadio.trigger('click'); And this is my HTML: <div class="divider chevron"> <ul> <li><strong>What benefit are you most interested in?</strong></li> <li> <input type="radio" class="inlineSpace" name="benefits" id="firstBenefit" value="Dental" checked="checked" /> <label for="firstBenefit">Dental</label> </li> <li> <input type="radio" class="inlineSpace" name="benefits" id="secondBenefit" value="Optical" /> <label for="secondBenefit">Optical</label> </li> <li> <input type="radio" class="inlineSpace" name="benefits" id="thirdBenefit" value="Physiotherapy" /> <label for="thirdBenefit">Physiotherapy, osteopathy, chiropractic, acupuncture</label> </li> </ul> <ul> <li><strong>How much do you spend a year on Dental?</strong></li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate1a" value="£50" /> <label for="rate1a">&pound;50</label> </li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate2a" value="£100" /> <label for="rate2a">&pound;100</label> </li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate3a" value="£150" /> <label for="rate3a">&pound;150</label> </li> </ul> <ul> <li><strong>How much do you spend a year on Optical?</strong></li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate1b" value="£50" /> <label for="rate1a">&pound;50</label> </li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate2b" value="£100" /> <label for="rate2a">&pound;100</label> </li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate3b" value="£150" /> <label for="rate3a">&pound;150</label> </li> </ul> <ul> <li><strong>How much do you spend a year on Physiotherapy, osteopathy, chiropractic, acupuncture?</strong></li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate1c" value="£50" /> <label for="rate1a">&pound;50</label> </li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate2c" value="£100" /> <label for="rate2a">&pound;100</label> </li> <li> <input type="radio" class="inlineSpace" name="spend" id="rate3c" value="£150" /> <label for="rate3a">&pound;150</label> </li> </ul> <label class="button"><input type="submit" value="View your quote" class="submit" /></label> </div> I tried using: $('div.chevron > ul').not($radioClick).hide(); But that yielded a bad result where all the lists where hidden. Thanks in advance.

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• Looking for Hardware that will easily interface with my .NET code.

  - by SkippyFire

  I'm a .NET C# developer looking to do some hardware interfacing/programming. I just want something super simple to mess around with. I have done one of those basic stamp projects, but I want something with less electrical work. A self-contained piece of hardware would be fine. I'm not really looking to do embedded programming... but that would actually be pretty cool if something was capable of running .net code. I'm looking for something that would be easy to connect, hopefully via USB. Serial ports seems to be more hit or miss nowadays with laptops and netbooks. Something I can easily send data to, like a mini LCD, or series of LED's. Better yet would be something that provides feedback, like a temperature sensor. The best would be something more featured that I could talk to. I would be able to send data to it, and it would send back responses. Maybe something like a servo that could report it's position? Or maybe something that I could set parameters on? Any ideas? Thanks in advance!

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• Benefits of implementing OAuth

  - by zfranciscus

  From a webservice provider point of view what is the benefit of asking users to create an account or login using 3rd party web service provider (e.g: Twitter or facebook) to log into your site with? Wouldn't it be easier to ask the user to provide their twitter or facebook login and use that to pull the user's twitter or facebook data? It is safer to use OAuth than giving some one the internet our twitter or facebook login credential. But, I can't figure out the benefit from the web service point of view.

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• Caching web API proxy?

  - by Jeremy Dunck

  I was wondering if anyone knows of a caching proxy specifically for dealing with API responses? Ideally, I'd be able to declare what caching policy to use for different API semantics, e.g. cache album art for 1 day, cache favorite tweets for 5 minutes, cache map tiles forever, except invalidate when this other API is called. I know about using Apache, Squid, etc for caching in general -- I'm just hoping for something with nicer usage semantics by restricting the design goal to dealing with APIs rather than the web in general.

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