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• Multiple dropdown combination check and filter

  - by Tom

  Using Javascript / jQuery, I'm trying to build a "combination checker" that will take the values of three (but can be more) dropdown lists and filter the options based on a supplied list of allowed combinations. For example: DROPDOWNS Field 1: - value_1 - value_2 Field 2: - value_3 Field 3: - value_4 - value_5 COMBINATIONS - value_1, value_3, value_5 - value_1, value_3, value_4 - value_2, value_3, value_5 When a user selects Field 3 - value_4, the unavailable options will be disabled - ie, Field 1 - value_2 (there is no combination that allows value_2 and value_4 to be selected together). It would be really great if someone could provide some pointers on how this can be achieved or just provide a fresh perspective - I'm going round in circles on this one!

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• Java Swing- Create a function to add elements to JScrollPanel

  - by battousai622

  I want to create a function so that i can call add JLabel's, etc inside the JScrollPanel. I am not sure what the command is in NetBeans. I tried doing JScrollPanel - events - container - componentAdded to create the code below. But nothing shows up when i add code to that function. private void initComponents() { scrollPanel = new javax.swing.JScrollPane(); scrollPanel.addContainerListener(new java.awt.event.ContainerAdapter() { public void componentAdded(java.awt.event.ContainerEvent evt) { scrollPanelComponentAdded(evt); } } private void scrollPanelComponentAdded(java.awt.event.ContainerEvent evt) { System.out.println("main"); } Any help would be great, thanks.

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• Grid computing projects similar to NGrid (thread based)

  - by DivdeAndConquer

  Hello there, first time poster. This is a great place for reading about programming problems. I've been looking at some grid computing projects for .Net/Mono and stumbled upon NGrid. NGrid seems really appealing for grid computing because you simply pass threads to it and there is very little modification you have to make to your code. However, I see that NGrid (http://ngrid.sourceforge.net/?page=overview) is still at version 0.7 and hasn't been updated since May 2008. So, I'm wondering if there are any other grid computing projects that use a similar thread-passing architecture and if anyone has had success using NGrid.

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• How to add new field(s) to the contact?

  - by user328302

  I want to add a Custom field to the ContactsContract content provider. I'm trying to build a Voip application and would like to add a SIP address(name@domain) field to it. What MIME type will I need to associate with it? Also I want to add a group address field which will have a list of group addresses in it (name@domain, name@domain,...). Wich MIME type will I have to associate with this type of field. I also want to add custom fields to the Call History like a session ID and SIP address(name@domain) field. How can I customize the call history? It'll be great if someone can give me an example.

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• Sortable with scriptaculous problems

  - by user195257

  hello, Im following a few tutorials to sort a list, but i can't get the DB to update. The drag drop side of things is working, also, i javascript alert() the serialize list onUpdate and the order is printed out as follows: images_list[]=20&images_list[]=19 etc... So the sorting and dragging is working fine, i just cant get the database to update, this is my code. <script type="text/javascript"> Sortable.create("images_list", { onUpdate: function() { new Ajax.Request("processor.php", { method: "post", parameters: { data: Sortable.serialize("images_list") } }); } }); processor.php code: //Connect to DB require_once('connect.php'); parse_str($_POST['data']); for ($i = 0; $i < count($images_list); $i++) { $id = $images_list[$i]; mysql_query("UPDATE `images` SET `ranking` = '$i' WHERE `id` = '$id'"); } Any ideas would be great, thankyou!

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• Struts2 plugins - Dojo or jQuery or...?

  - by Trick

  Since Apache Struts has deprecated Dojo plugin from Struts 2.1.x I am thinking to change everything to jQuery. I especially noticed the difference in sizes (170kb vs 19kb - something like that). I had troubles with IE browser with handling dojo scripts, is this happening also with jQuery (when user is working with the application for a long time, script stops running)? I have a lot of dojo tags in my applications, and I use most of theirs attributes. Has anyone had any experience doing that? What were the problems? What were the benefits? Downsides? Does anyone has any better ideas of which plugin to include with Struts2? Any answer will be great! Thanks.

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• Get access to a lot of iPhone and iPad Quality Source Codes for only $89

  - by Pixmator

  Hi developers and coming developers! We are happy to release this new concept from Pixmator.com, where you can get access to a lot of iPhone and iPad source codes for only $89. Start making a pro-developed application by these great application examples with is followed with a Source Code, so you can get everything out of it! These applications is present with a fully professionally designed graphic. The engine and the code is as well, as the graphic! It looks awesome. It is awesome. Take a look, it doesn't hurt anyone. Hope you guys like it! It will be available for purchase soon! Check out the link below: Check it out here!

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• Java SWING- Create a function to add elements to JScrollPanel ??? PLEASE

  - by battousai622

  I want to create a function so that i can call add JLables, ect inside the JScrollPanel. Im not sure what the command is in netbeans. I tried doing JScrollPanel - events - container - componentAdded to create the code below. But nothing shows up when i add code to that function. Any help would be great please! =] private void initComponents() { scrollPanel = new javax.swing.JScrollPane(); scrollPanel.addContainerListener(new java.awt.event.ContainerAdapter() { public void componentAdded(java.awt.event.ContainerEvent evt) { scrollPanelComponentAdded(evt); } } private void scrollPanelComponentAdded(java.awt.event.ContainerEvent evt) { System.out.println("main"); }

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• stick element to top of page until next element of that type appears

  - by aharon

  I'm having a hard time giving a good description of this, but bear with me: If I have a page structed like this <h2>Chapter 1</h2> <p>Lots of text that has mutiple screen worths of content</p> <h2>Chapter 2</h2> <p>Lots of text...</p> I'd like to have "Chapter 1" absolutely positioned or whatever at the top of the page until the user scrolls down to where "Chapter 2" starts, at which point now "Chapter 2" is displayed at the top of the page. We can add wrapper classes and divs if needed. Solutions that use JQuery would be great.

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• pyschool is wrong ?

  - by geekkid

  I'm currently learning python and trying to do exercises at pyschools (if anyone knows what it is). Anyway, i have an exercise that asks me to do the following : Write a function percent(value, total) that takes in two numbers as arguments, and returns the percentage value as an integer. Here's my code: def percent(value, total): percent = value / total * 100 return int(percent) It works great in my Python Idle and it gives all the correct answers. however, when i run it in the pyschools website, it says that , for example , when the function is called with parameters 46 and 90 , the function returns 0. However, in my python idle , it correctly returns 51. What might be the problem ? Thank you very much for your help!

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• How to perform multiple find and replace in TextMate besides macro?

  - by T1000

  I have several regular expressions to find and replace text in documents in TextMate. I would like to be able to have them run in a batch. I made a macro and it worked, but any tiny modifications to the macro means re-recording the macro. And I can't seem to modify the regex within the TextMate interface. It's read-only for some reason. Can I make it into a command? Does anyone know how? I tried to read the TextMate help about commands, but it wasn't much help. It seems I need prior knowledge of shell scripts or some sort (which I have none). Any advise in the direction would be great. Thanx in advance.

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• How to launch a program as as a normal user from a UAC elevated installer

  - by KZ

  I'm writing an NSIS installer and the setup program elevates "as administrator" as needed on Windows 7 / vista. I need to run the installed program at the end of the install and don't want to launch it with the same privileges as the installer. The regular NSIS exec commands run the child process with the same permissions as the installer. There is a UAC plugin for NSIS, but the documentation on it isn't great and it seems v. new; I'd prefer not to use that plugin. Ideally, I'm looking for a small .exe I can include that'll launch the target program without UAC elevation. Does this exist? Any other suggestions? Thanks!

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• jQuery .animate reveal contact form hidden in div with negative margin above header

  - by brhea

  Hi everyone, I've got my contact form hidden with a negative margin-top, so that when the visitor clicks "Contact" it reveals the div. <script type="text/javascript">$("#revealContact").click(function(){ $("#contact").animate({ marginTop: "+=620px" }, 1000); });</script> You can view it live here: http://www.brianrhea.com/index_contact.php -- click Contact link in top right My problem is that as soon as the form is submitted, it inherits the -620 margin and the success (or error) prompt is invisible. I'm running in to some other cross-compatibility issues as well with the margin spacing so I'm not even sure this is the best way to go about this. Obviously it'd be great if I could just begin with the div as display:hidden and then animate it to visible, but I haven't been able to do that. Any input is appreciated, either with advice on how to save the margin after form submission, or suggestion on better method to achieve this hide/reveal. Thanks, Brian

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• .NET Neural Network or AI for Future Predictions

  - by Ian

  Hi All. I am looking for some kind of intelligent (I was thinking AI or Neural network) library that I can feed a list of historical data and this will predict the next sequence of outputs. As an example I would like to feed the library the following figures 1,2,3,4,5 and based on this, it should predict the next sequence is 6,7,8,9,10 etc. The inputs will be a lot more complex and contain much more information. This will be used in a C# application. If you have any recommendations or warning that will be great. Thanks

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• Clojure for a lisp illiterate

  - by dbyrne

  I am a lifelong object-oriented programmer. My job is primarily java development, but I have experience in a number of languages. Ruby gave me my first real taste of functional programming. I loved the features Ruby borrowed from the functional paradigm such as closures and continuations. Eventually, I graduated to Scala. This has been a great way to gradually learn to approach non-trivial problems in a functional manner. Now I am interested in Clojure. I know all the sexy features that make it enticing (software transactional memory, macros, etc.), but I just can't get used to "thinking in lisp". I've seen Rich Hickey's screencasts aimed at java programmers, but they are geared towards explaining language features and not approaching real world problems. I am looking for any advice or resources which have made this transition easier for others.

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• UITableView - Loading data from internet

  - by Emil

  Hey. I have seen many apps that load data to UITableViews from the internet, and they usually load smoothly. Now it's my turn to load in that kind of data. I am getting different data at the same time, separating categories with ~ and pieces of categories with #. This works great, and I have managed to separate the data in obj-c perfectly. Everything in my app works, it's just that the loading takes a lot of time. So, I guess the real question is, how can you load in data for a tableView in the background, showing a label/UIActivityView or something while it is loading? Thank you.

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• Getting the value from an array in the model in rails

  - by slythic

  Hi all, I have a relatively simple problem. I have a model named Item which I've added a status field. The status field will only have two options (Lost or Found). So I created the following array in my Item model: STATUS = [ [1, "Lost"], [2, "Found"]] In my form view I added the following code which works great: <%= collection_select :item, :status, Item::STATUS, :first, :last, {:include_blank => 'Select status'} %> This stores the numeric id (1 or 2) of the status in the database. However, in my show view I can't figure out how to convert from the numeric id (again, 1 or 2) to the text equivalent of Lost or Found. Any ideas on how to get this to work? Is there a better way to go about this? Many thanks, Tony

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• WPF Dragging a window to the desktop

  - by pfaz

  I've seen some nice Adobe AIR demos where a component of the application is dragged outside of the application and dropped onto the desktop and then continues to run in a new window. This seems to be facilitated by the NativeDragManager class. Is there anything similar in WPF? How would you go about implementing this sort of functionality in WPF to allow a user control to be dragged to the desktop and then continue to run in a new window? This is great for multi-monitor scenarios and exactly what msft have added to vs2010. Regards pfaz

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• PHP/Codeigniter FTP Timout

  - by Jack Hayter

  I'm trying to access an FTP server from my PHP script using Codeigniter's FTP Library. These functions work great, but when testing the script I discovered that if I attempt to connect to a server that does not exist, the script does not terminate with an error message of any kind. The page continues to execute, until the web server gives up, returning an empty document. So I am wondering, is there a way to limit the amount of time that Codeigniter can try to connect to an FTP server, then display a message if that times out? I tried using the php function set_time_limit(), but it does not behave how I expected it to. Thanks for your help.

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• C# app that uses Excel Interop, easy switch between 2003 2007?

  - by user320781

  I have an app written that just does really basic I/O on a spreadsheet. Read in a bunch of cells, do some sorting, and dump the output back into another spreadsheet. Works great on my machine. I have Office 2003 installed. When it runs on someone elses machine with 2007, it bombs, presumably due to the different versions of the Interop assemblies. I was hoping someone knew a way to dynamically change which/where the assembly is loaded from depending on the office version (getting the office version is easy from the registry). Sifting thru the rest of the internet, i didnt see anything to indicate that was possible :( . I tried installing the 2007 PIAs, but when i try to add a reference, they dont show up and i have no idea where to browse for them (they arent in the c:\windows\assemblies\; maybe the install didnt work). Am I going to have to get a machine with 2007 installed to build on every time i need to make updates?

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• How to access java collection, just like the table in the database, having indexes and LINQ-like que

  - by Shaman

  This task occurs from time to time in my projects. I need to handle a collection of some complex elements, having different attributes, such as login, password_hash, role, etc. And, I need to be able to query that collection, just like I query a table in the database, having only partial data. For example: get all users, with role "user". Or check, if there's a user with login "root" and role "superuser". Removing items, based on same data is also needed. The first attempt I've tried is to use Google collections, Apache collections, and lambdaj. All of them have very similar preicate mechanism, but with a great disadvantage: it is based on iteration, one by one, over the collection of items, which is not good, for often used collections, containing big amounts of data. Could you please suggest me some solution? Thanks.

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• What are some ways to identify a logged in user on the web?

  - by farinspace

  Here is the scenario: There are 5 websites (different domain names) that need to share a session. I am using a bit of code on each site which returns a "blank.gif" image and at the same time sets the session (syncing it up to the current session). Each of the sites calls a session-img from each of the other sites. Also, all sites have access to the same database (where the session is stored). This works great on FF and Chrome, but not on IE (or Safari PC)... I need to come up with an alternative method to keep a session active? The app is a small custom CMS, so really only 2-3 people will be using it. I can probably identify user logins by IP and then continue to check for the IP accross all sites... Is there something more granular such as a computer uuid that i can check for?

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• When accessing ResultSets in JDBC, is there an elegant way to distinguish between nulls and actual z

  - by Uri

  When using JDBC and accessing primitive types via a result set, is there a more elegant way to deal with the null/0 than the following: int myInt = rs.getInt(columnNumber) if(rs.wasNull())? { // Treat as null } else { // Treat as 0 } I personally cringe whenever I see this sort of code. I fail to see why ResultSet was not defined to return the boxed integer types (except, perhaps, performance) or at least provide both. Bonus points if anyone can convince me that the current API design is great :) My solution was to write a wrapper that returns an Integer (I care more about elegance of client code than performance), but I'm wondering if I'm missing a better way to do this.

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• jQuery Syntax Question, pretty easy I think..

  - by Fuego DeBassi

  Hi all, question: <script type="text/javascript"> $(document).ready(function() { $(".module .caption").hide(); $(".module").hover(function() { $(this).find(".caption").slideDown(); },function() { $(this).find(".caption").slideUp(); }); }); </script> This snippet works great for my purposes, the only caveat is that I need the .module hover function to simultaneously add a class of "under" to all other ".caption"'s that are not $this, and then remove them when the hover ends. So basically I don't want the "module" that is hovered to get the class, I want it to do exactly what I am showing here...sliding .caption up and down on end hover, I just want all other ".caption"s to get the under class when any ".module" is hovered. Just hitting a dead end with what I have been trying, want to do it in the same function. Any ideas?

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• jQuery fadeTo not working in IE8

  - by Lynda

  I have a div fading in using fadeTo. It works great in Firefox and IE9. It does not work in IE8. Here is my code: JS: var $j = jQuery.noConflict(); window.onload = function(){ $j('#fadein').fadeTo(6000, 1, function() { }); }; HTML <div class="img-center" id="fadein" style="opacity:0;"> <img src="src.jpg" alt="Text" class="feature-image" /> </div> How do I get this to work in IE8? I do not mind changing from fadeTo to fadeIn or some other method of fading in a div as long as it works in IE8.

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