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• Modularizing web applications

  - by Matt

  Hey all, I was wondering how big companies tend to modularize components on their page. Facebook is a good example: There's a team working on Search that has its own CSS, javascript, html, etc.. There's a team working on the news feed that has its own CSS, javascript, html, etc... ... And the list goes on They cannot all be aware of what everyone is naming their div tags and whatnot, so what's the controller(?) doing to hook all these components in on the final page?? Note: This doesn't just apply to facebook - any company that has separate teams working on separate components has some logic that helps them out. EDIT: Thanks all for the responses, unfortunately I still haven't really found what I'm looking for - when you check out the source code (granted its minified), the divs have UIDs, my guess is that there is a compilation process that runs through and makes each of the components unique, renaming divs and css rules.. any ideas? Thanks all! Matt Mueller

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• Fiscal year handling strategies in database design

  - by Sapphire

  By fiscal year I mean all the data in the database (in all tables) that occurred in the particular year. Lets say that we are building an application that allows user to choose from different years. What way of implementing this would you prefer, and why: Separate fiscal year data based on multiple separate database instances (for example, on every fiscal year start you could create a new instance with no data) Have everything in one database, but with logic that automatically separates records from different years. Personally, I have "seen" both methods, and I would choose the second. The only argument I can think of for the first method is to have less records in case that these are really big databases - but still, you could "archive" old records by joining them in summaries or by some other way. What do you think?

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• any real MVC library in PHP (for GUI apps)

  - by mario

  I'm wondering if there are any abstraction frameworks for one of the PHP gui libraries. We have PHP-GTK, a PHP/Tk interface, and seemingly also PHP-QT. (Not tried any.) I know that writing against the raw Gtk+ interface in Python is just bearable, and it therefore seems not very enticing for PHP. I assume it's the same for Qt, and Tk is pretty low-level too. So I'm looking for something that provides a nicer object structure atop any of the three. Primarily TreeViews are always a chore and php-gtk callbacks are weird in PHP, so I'd like a simplification for that. If it eases adding the GUI/View atop my business logic without much control code, that might already help. And so since GUI apps are an area where MVC or MVP would actually make sense, I'd like to know if any library for that exists. Btw, recently rediscovered PHP interface preprocessor, but that's rather low-level and just provides a simple widget/interface abstraction for Gtk/ncurses/pdf/xhtml output.

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• How to achieve conditional resource import in a Spring XML context?

  - by Boris Terzic

  What I would like to achieve is the ability to "dynamically" (i.e. based on a property defined in a configuration file) enable/disable the importing of a child Spring XML context. I imagine something like: <import condition="some.property.name" resource="some-context.xml"/> Where the property is resolved (to a boolean) and when true the context is imported, otherwise it isn't. Some of my research so far: Writing a custom NamespaceHandler (and related classes) so I can register my own custom element in my own namespace. For example: <myns:import condition="some.property.name" resource="some-context.xml"/> The problem with this approach is that I do not want to replicate the entire resource importing logic from Spring and it isn't obvious to me what I need to delegate to to do this. Overriding DefaultBeanDefinitionDocumentReader to extend the behaviour of the "import" element parsing and interpretation (which happens there in the importBeanDefinitionResource method). However I'm not sure where I can register this extension.

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• iText - Modifying PDFWriter# Verticle Alignment manually

  - by simon622

  Ive hit upon a problem using iText (java), despite hours of looking thru the docs.. Most of the code I use goes via the Document# API which tracks (via the PDFWriter instance) the current Y position. HOWEVER, we need to use the PdfContentByte part of the API to insert some Java2d into the document, but in doing so this appears to bypass the logic which tracks verticle writes. So next time I use the Document API, it overwrites the contents of the manually inserted things. I want to mimick the behaviour of the Document# API by manually moving the cursor on N number of units (N being the height of the element inserted by the PDFContentByte API), such that when I then use the Document object again, bingo, its cursor is in the correct location. I can see that a method to obtain the cursor exists; PdfWriter#getVerticalPosition(boolean); But not one to set it?! Any ideas anyone? Thanks.

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• How to get rid of "Uncaught SoapFault exception: [Client] looks like we got no XML document in..." e

  - by Eedoh

  Hello I'm trying to develop business logic for a dynamic site using nusoap on server side (because I need wsdls, and PHP SOAP extension can't generate wsdls), and PHP SOAP extenstion on client side. However, I can't get even login and getRole functions right. When i try to invoke client, I get following message Uncaught SoapFault exception: [Client] looks like we got no XML document in [some paths]... Wsdl does exist on server side, and client does read it (when I put wrong url for wsdl, I get an error). Can anyone help??

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• RIA Services versus WCF services: what is a difference

  - by Budda

  There are a lot of information how to build Silverlight application using .NET RIA services, but it isn't clear what is unique thing in RIA that is absent in WCF? Here are few topics that are talking around this topic: http://stackoverflow.com/questions/1647225/ria-services-versus-wcf-services http://stackoverflow.com/questions/945123/net-ria-services-wcf-services But they doesn't give an answer to the question. Sorry for the stupid question, but what does "RIA Services" layer bring into your app if you already have "Silverlight <-- WCF Service <-- Business Logic <-- Entity Framework Model <-- Database"? Authentication? Validation? Is it relly asset for you? At the moment the only thing I see: with RIA services usage you don't need to host WCF service manually and don't need to configure any references on the client side (clien side == Silverlight application). Probably I don't know some very useful features of the RIA Services? So could you please point me to the good doc for that? Many thanks.

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• Loading Separate Pages With Animation in JQTouch

  - by Donovan Keith

  I'm trying to convert a database-driven multiple-choice-style study website (written in JSP) into an iPhone app using JQTouch. If I load all of the Q&A's into their own divs in the same file I can easily link and animate between them using links to hashtags, like: a class="button" href="#question22" Unfortunately this isn't practical. The logic of the website as it currently works requires calls to a number of dynamically generated pages; I can't include every question in its own div in the same flat file. How would I go about dynamically (pre)loading the next question (a JSP page like AskQuestion.jsp?questionId=Kzhctand ) then serving that up within the app after the user presses a button? Thanks for any help you might offer. -Donovan

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• SelectionChanged event binding in Silverlight+MVVM-Light

  - by Budda

  The handler of the "SelectionChanged" event of the ComboBox control has the following signature: void SelectionChangedMethod(object sender, SelectionChangedEventArgs e) How to bind to that property under Silverlight 4 and MVVM-Light to the corresponding method of the ViewModel object? As far as I know, I need to do something like this: public void Changed(Object obj, SelectionChangedEventArgs e) { // .... implement logic here } RelayCommand<Object, SelectionChangedEventArgs> _command; public ICommand ObjectSelectionChanged { get { if (_command == null) { _command = new RelayCommand<Object, SelectionChangedEventArgs>(Changed); } return _command; } } The problem is that RelayCommand class in the MVVM-Light framework doesn't support 2 generic parameters... Is there any solution or workaround for this case? How bind control event to the method with 2 parameters?

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• Best UI development framework on windows?

  - by TG

  I have been developing UI in Win32/MFC, but developing cool UI in Win32/MFC is very difficult and time consuming. Please note, I always want my code to be platform independent, So I prefer programming back-end (Business logic) in C++. Which is the best framework for developing cool UI on windows platform? I heard of quite a few, like Qt, Flex, Delphi. What is your thoughts (Pros and Cons) on these UI development frameworks. Which one do you recommend ?

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• Blackberry Development, communicating two Blackberry device in a multiplayer game programatically

  - by Nikesh Yadav

  Hi Forum, We are developing a game application for Blackberry, which will have multi player option to let two or more player compete against each other. We have implemented the logic for that and already two or more player are able to play the game simultaneously on single device. Now we want to upgrade our application so that two or more user can compete each other playing from different device and different locations. Can anyone please help me by providing me the way (or code) to achieve this (communicating two blackberry devices over the air to access single session programmaticaly)? I found the code to connect two device using Bluetooth but as the player may situated in different geographic regions we need to achieve this using over the air connection. Thanks in advance. Thanks, Nikesh

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• iPad UISplitView initial state in portrait: how to display popover controller widget?

  - by Patrick Linskey

  Hi, I'm working on an iPad app that uses a UISplitView. Inspired by http://blog.blackwhale.at/2010/04/your-first-ipad-split-view-application/, I display a button in my detail view when in portrait mode that shows the popover controller. This works great. However, the appropriate UISplitViewControllerDelegate message is only sent when the device rotates. So, when the app first loads (in portrait mode), my navigation button is not visible. Is it possible to somehow convince the UISplitViewController to send that message on load or something, or do I need to re-implement my own popover logic to get things working? Thanks, -Patrick

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• OpenId + Facebook Connect

  - by Claudio Redi

  Hi! I have a request for implementing a login system using local credentials + openId + facebook-connect. So a user could sign up/sign in using any of the 3 possibilities. I think that allowing OpenId AND facebook connect adds some flexibility in one had, but in other hand adds some restrictions since you have to integrate all different logic and make existing differences transparent for users. What do you think? Any good reference for managing federated login using both external mechanisms? Any well known site doing it right now?

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• JSF2 - what scope for f:ajax elements?

  - by Konrad Garus

  I have this form: <h:form> <h:outputText value="Tag:" /> <h:inputText value="#{entryRecorder.tag}"> <f:ajax render="category" /> </h:inputText> <h:outputText value="Category:" /> <h:inputText value="#{entryRecorder.category}" id="category" /> </h:form> What I'm trying to achieve: When you type in the "tag" field, the entryRecorder.tag field is updated with what was typed. By some logic upon this action the bean also updates its category field. This change should be reflected in the form. Questions: What scope shall I use for EntryRecorder? Request may not be satisfactory for multiple AJAX requests, while session will not work with multiple browser windows per one session. How can I register my updateCategory() action in EntryRecorder so that it is triggered when the bean is updated?

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• Grails GORM (Hibernate) query

  - by bsreekanth

  Hello, I'm trying to do the below sql statement in GORM select * from table1 where table1.x not in (select x from table 2 where y='something'); so, I have two tables, and needs to find the entries from table 1 which are not in table 2. In Grails def xx= table2.findByY('something') def c = table1.createCriteria() def result= c.list { not ( in('x', xx) ) } the syntax is wrong, and I'm not sure how to simulate not in sql logic. As a learning point, if someone can also tell me why minus (-) operator in grails/groovy doesn't work with list. I tried getting x and y seperately, and doing x.minus(y), but it doesn't change the list. I saw an explanation at http://stackoverflow.com/questions/1754576/groovy-on-grails-list-not-working , but I would expect the list defined are local. thank you so much.

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• RPG Game loop and class structure (cocos2D for iPhone)

  - by mac_55

  I'm looking to make an RPG with Cocos2D on the iPhone. I've done a fair bit of research, and I really like the model Cocos2D uses for scenes. I can instantiate a scene, set up my characters etc. and it all works really nicely... what I have problems with is structuring a game loop and separating the code from the scenes. For example, where do I put my code that will maintain the state of the game across multiple scenes? and do I put the code for events that get fired in a scene in that scene's class? or do I have some other class that separates the init code from the logic? Also, I've read a lot of tutorials that mention changing scenes, but I've read none that talk about updating a scene - taking input from the user and updating the display based on that. Does that happen in the scene object, or in a separate display engine type class. Thanks in advance!

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• Too late to become a programmer?

  - by Tomas

  Hi, Working in IT for 5 years, I focused on system integration - testing, performance tests and analysis, automation etc. Altough I am working for one of the biggest IT companies, I have the possibility to come up with my own ideas and realize them - for example I have written C# (with SQL backend) bugtracker application with management elements...and I really liked it. I am very creative person but being 25 y/o, I am wondering whether it is too late. I understand the logic of programming but as I was never very good in math I assume I have no chance to become professional programmer in this age. What do you think? Thanks

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• Access Internet From My Blackberry App

  - by Ankit

  Hi all, This is my first attemp to code a blackberry app so please bear with me. I am developing an app to make it easy to access certain information from certain websites using screenscrapping. Now I am done with the ui part of the application onto the internet access part. My question is how do i access internet from my app ? I see that blackberry offers http, wifi and some other forms to access the internet ... does my app need to be worried about what mode is being used ? or as far as my app is concerned theres a general api to access the net with the logic of connecting to the internet being handled by the device itself ..? any pointers with some sample code would be much appreciated. thank you, ankit

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• Are you as productive in Javascript as you are in .Net or Java?

  - by bglenn

  I code primarily in javascript and in vb.net. I've found that if I can achieve the same thing in both javascript and vb.net that I feel far more productive and expressive using javascript for the task. I often find myself researching server-side javascript implementations to see if anything has gone mainstream so that I can code my back-end business logic and data access in javascript. Given all the advanced tooling and language features in .Net this preference seems somewhat paradoxical to me. I'm not suggesting one is better than the other (I've been a vb programmer since I started programming), I'm just wondering if my preference is entirely subjective or if anyone else shares it. So, does anyone else enjoy coding in javascript to the point where you prefer it to the .Net and Java environment, and if, so why?

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• Email attachment parsing via mime4j

  - by Ashish

  Hi, I am using a small java smtp library (http://code.google.com/p/subethasmtp/), by this I need to parse the incoming emails in separate components viz body, attachments etc. I am trying to use mime4j , but the documentation suggests that mime4j can only give event notification or token notification and nothing else. For stripping out body and attachments etc I had to use my own custom logic inside the event handlers. Is my observation correct? If yes then how can I use mime4j to use for my requirement. Please suggest. I badly need an approach that takes in the smtp data stream and returns me with an array of attachment references or streams in fully parsed out form in java. Please help. Thanks in advance Ashish Sharma

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• First TDD, Simple 2-tier C# Project - what do I unit test?

  - by Joel

  This is probably a stupid question but my googling isn't finding a satisfactory answer. I'm starting a small project in C#, with just a business layer and a data access layer - strangely, the UI will come later, and I have very little (read:no) concept / control over what it will look like. I would like to try TDD for this project. I'm using Visual Studio 2008 (soon to be 2010), I have ReSharper 5, and nUnit. Again, I want to do Test-Driven Development, but not necessarily the entire XP system. My question is - when and where do I write the first unit test? Do I only test logic before I write it, or do I test everything? It seems counter-productive to test things that have no reason to fail (auto-properties, empty constructors)...but it seems like the "No new code without a failing test" maxim requires this. Links or references are fine (but preferably to online resources, not books - I would like to get started ASAP). Thanks in advance for any guidance!

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• Is learning the Caché database hard coming from relational databases and object oriented programming

  - by Edelcom

  I am currently running the local version of Caché on my system in order to determine if I can (and will) take on a new possible project. The current project uses Delphi 7 as a front end calling a Caché dll where the business logic is stored in the database. I have a background of Sqlserver and Firebird (and before Access and Paradox) as databases. I use Delphi 7 for 95% of my Windows development, so I know about object programming. I would like to recieve opinions from persons having used Caché and either SqlServer, Firebird or Oracle and having developed in Delphi (or C++ or C# - an object oriented language). I have read the pro's and con's from other questions, but I am not asking for this, I need input from Caché developers. Thanks in advance.

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• How to Prevent SelectionChange a Silverlight DataGrid

  - by Matt Eland

  I'm using a Silverlight 3 DataGrid control and have set the SelectionMode to Extended. The DataGrid takes care of managing the extended selection for me in an almost perfect manner out of the box, but a key piece of the logic is interfering with me. I have a cell that can function as a drag and drop thumb and initiate a drag operation but users want to do a series of shift or control clicks to set a selection followed by a click and drag on one of the selected rows to initiate the drag. The problem is that the click and drag at the end of this series causes the selection to be set to only the row that was clicked. I've poked around for ways of conditionally preventing the DataGrid from changing selection, but can't seem to find anything that works. Does anyone have any ideas for preventing selection from changing?

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• Firefox causes extra "Not Postback" ping when postback happens

  - by Arvind

  We got weird problem in my application (asp.net). The problem happens only in Firefox. The scenario is like this.. We have grid bind with results. when I change page of the grid (postback). at that time extra "Not postback" is caused in FireFox only which actually disturb my session logic and then all goes wrong. Can anyone have idea on this? Please help me out!

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• Multiple skins in ASP.NET MVC using StringTemplate

  - by Jamie

  I am considering the StringTemplate view engine for my ASP.NET MVC application. This application will be built with one skin, but I then expect many more, often very similar skins to be developed for it. This is primiarly the reason for my choice of StringTemplate as the view engine, as there will be zero logic in the views. In my head, I envisaged having each skin in a directory under the 'Views' directory in the folder structure, then maintaining a data structure which maps hostnames to skin directories. An obvious disadvantage of this approach is that I will have to explicitly specify my view files - an alternative might be to hack the implementation of the View() method to change the /views/controller/action standard path and insert an extra layer. Is anyone aware of any examples of implementations along these lines using ASP.NET MVC and StringTemplate at present? Can anyone forsee any potential problems with my approach? Thanks in advance.

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