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  • which language to use for building web application?

    - by harshit
    Hi I already have experience in developing websites using java technologies ... Now i have a task to develop another website and i have the liberty to select technology to built. I dont want to built using Java/J2ee standard technology as i want to learn new language. The specification about website i can give is that: 1) its a real estate based site. 2) so it will have a db of real estate data around million records 3) website will have more than 1000 hits /day and will have various functionality like search, add , delete,generate reports etc. So i mean UI should be good and fast. Technologies i have in mind .NEt( i have already worked on it but it licensed so may not go for it) , Groovy, Ruby on rails ,Play, GWT etc ... I am a college student and the website is again of a student(non techie guy) so i have 5-6 mnths to bring the website up I have read about them but all have adv and disadv but would like to hear from people who have used it and can tell me what they felt about the languages and problems while developing it.. Please feel free to drop any opinion you feel . Thanks

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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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  • Database theory - relationship between two tables

    - by iansinke
    I have a database with two tables - let's call them Foo and Bar. Each foo may be related to any number of bars, and each bar may be related to any number of foos. I want to be able to retrieve, with one query, the foos that are associated with a certain bar, and the bars that are associated with a certain foo. My question is, what is the best way of recording these relationships? Should I have a separate table with records of each relationship (e.g. two columns, foo and bar)? Should the foo table have a column for a list of bars, and vice versa? Is there another option that I'm overlooking? I'm using SQL Server, if that makes a difference.

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  • Does anyone use Fortify 360 with Classic ASP? a Header Manipulation vulnerability story

    - by j_green71
    Good morning, everyone. I'm on a short-term contracting gig, trying to patch some vulnerabilities in their legacy code. The application I'm working on is a combination of Classic ASP(VBScript) and .Net 2.0 (C#). One of the tools they have purchased is Fortify 360. Let's say that this is a current classic ASP page in the application: <%@ Language=VBScript %> <% Dim var var = Request.QueryString("var") ' do stuff Response.Redirect "nextpage.asp?var=" & var %> I know, I know, short and very dangerous. So we wrote some (en/de)coders and validation/verification routines: <%@ Language=VBScript %> <% Dim var var = Decode(Request.QueryString("var")) ' do stuff if isValid(var) then Response.Redirect "nextpage.asp?var=" & Encode(var) else 'throw error page end if %> And still Fortify flags this as vulnerable to Header Manipulation. How or what exactly is Fortify looking for? The reason I suspect that Fortify is looking for specific key words is that on the .Net side of things, I can include the Microsoft AntiXss assembly and call functions such as GetSafeHtmlFragment and UrlEncode and Fortify is happy. Any advice?

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  • How do you draw like a Crayon?

    - by Simucal
    Crayon Physics Deluxe is a commercial game that came out recently. Watch the video on the main link to get an idea of what I'm talking about. It allows you to draw shapes and have them react with proper physics. The goal is to move a ball to a star across the screen using contraptions and shapes you build. While the game is basically a wrapper for the popular Box2D Physics Engine, it does have one feature that I'm curious about how it is implemented. Its drawing looks very much like a Crayon. You can see the texture of the crayon and as it draws it varies in thickness and darkness just like an actual crayon drawing would look like. The background texture is freely available here. Close up of crayon drawing - Note the varying darkness What kind of algorithm would be used to render those lines in a way that looks like a Crayon? Is it a simple texture applied with a random thickness and darkness or is there something more going on?

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  • MVVM Madness: Commands

    - by JP
    I like MVVM. I don't love it, but like it. Most of it makes sense. But, I keep reading articles that encourage you to write a lot of code so that you can write XAML and don't have to write any code in the code-behind. Let me give you an example. Recently I wanted to hookup a command in my ViewModel to a ListView MouseDoubleClickEvent. I wasn't quite sure how to do this. Fortunately, Google has answers for everything. I found the following articles: http://blog.functionalfun.net/2008/09/hooking-up-commands-to-events-in-wpf.html http://joyfulwpf.blogspot.com/2009/05/mvvm-invoking-command-on-attached-event.html http://sachabarber.net/?p=514 http://geekswithblogs.net/HouseOfBilz/archive/2009/08/27/adventures-in-mvvm-ndash-binding-commands-to-any-event.aspx http://marlongrech.wordpress.com/2008/12/13/attachedcommandbehavior-v2-aka-acb/ While the solutions were helpful in my understanding of commands, there were problems. Some of the aforementioned solutions rendered the WPF designer unusable because of a common hack of appending "Internal" after a dependency property; the WPF designer can't find it, but the CLR can. Some of the solutions didn't allow multiple commands to the same control. Some of the solutions didn't allow parameters. After experimenting for a few hours I just decided to do this: private void ListView_MouseDoubleClick(object sender, MouseButtonEventArgs e) { ListView lv = sender as ListView; MyViewModel vm = this.DataContext as MyViewModel; vm.DoSomethingCommand.Execute(lv.SelectedItem); } So, MVVM purists, please tell me what's wrong with this? I can still Unit test my command. This seems very practical, but seems to violate the guideline of "ZOMG... you have code in your code-behind!!!!" Please share your thoughts. Thanks in advance.

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  • DBMS debugger causes TOAD to hang

    - by James Collins
    I can start the dbms debugger in Toad and use it normally but if I hit the 'halt execution' button or just hit the 'Run' button to reach the end of the function it causes TOAD to hang. Windows reports it as not responding and I have to kill it through the task manager. I have had this problem in Toad 9.7.2.5 and Toad 10 on two different laptops. Has anyone else experienced this problem? If you have did you find a solution to this?

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  • UISplitView show different views in the detail pane

    - by Mark
    How can I change the view in the Details pane of the UISplitView so that its a completely different view? Im having a fair amount of trouble understanding how its all wired up and where things should go at the moment, could someone please enlighten me? What I would love to be able to do is to show a specific view based on what the user has selected in the UITableView on the left pane (this view could be an image, or a more complex view of a news article, etc... many different options) then when the user turns the iPad into portrait view, that view that was in the details pane changes to be its equivalent portrait view version. Does this make sense? How on earth would I do that? Just to brainstorm, here is what I was thinking: Create a Split View project Create 2 NIBs for each view: (with accompanying view controllers???) * PortraitNewsStory * LandscapeNewsStory * PortraitImageBrowser * LandscapeImageBrowser * etc... Create a UISplitView control using XCode Capture when a user rotates the iPad (should this be done in the RootViewController.m ?) Change the view of the DetailViewController how should I do this? profit??? Thanks Mark

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  • Conditional Markup in aspx

    - by Dynde
    Hi... I have a ListView. If I want to base the html markup on a condition in respects to the databound item, what would be the best way to do that? What I mean is, is there any other way then putting <% % if/else blocks directly in the markup? I'm aware that a really ugly way of doing it, is putting html markup in the database field, and just let the Eval() squeeze out the proper markup (I'm not doing that). I would like to avoid putting actual <% % C# blocks in the code as well. Any good ideas?

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  • How to organize modules for PyPI to support 2.x and 3.x

    - by Craig McQueen
    I have a Python module that I would like to upload to PyPI. So far, it is working for Python 2.x. It shouldn't be too hard to write a version for 3.x now. But, after following guidelines for making modules in these places: Distributing Python Modules The Hitchhiker’s Guide to Packaging it's not clear to me how to support multiple source distributions for different versions of Python, and it's not clear if/how PyPI could support it. I envisage I would have separate code for: 2.x 2.6 (maybe, as a special case to use the new buffer API) 3.x How is it possible to set up a Python module in PyPI so that someone can do: easy_install modulename and it will install the right thing whether the user is using 2.x or 3.x?

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  • Objective C for beginners

    - by Golfgod130
    I was just asked to talk about Objective C to a bunch of High School student for 20 minutes. They have no experience with programming at all. What topics should I cover? Should I define vocab such as Method, Class, Variable? Or should I do something else? Any comments are helpful!

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  • High-quality ERD generator for PostgresQL under Linux?

    - by Dave Jarvis
    Background MySQL Workbench can produce appealing and high-quality ERDs such as: Research I have not found a tool that even comes close for PostgreSQL. Tools I have found: dbVisualizer - Yellow squares. AquaFold - Yellow squares. SQL Developer - Coloured squares. Dia - Coloured squares. SchemaBank - Can't export to PNG; looks okay, nothing stellar. SchemaSpy - XML export makes it possible to write an XSL skin... Gliffy - Incompatible Flash version. Druid - No. pgAdmin3 - Not applicable? phpPgAdmin - Couldn't login without a 30-minute configuration battle. Requirements Looking for an ERD tool: Visually stunning by default Can reverse-engineer a PostgreSQL (or JDBC-compliant) database Runs on Linux (or under WINE) Export high-resolution PNG (or SVG) FOSS

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  • MVP on Asp.Net WebForms

    - by Nicolas Irisarri
    I'm not clear about this.... When having a gridview on the View, is the controller who has to set up the Data source, columns, etc? or I just have to expose the DataBinding stuff, fire it from the controller and let the html/codebehind on the view handle all the rendering and wiring up? To be more precise: on the view should I have private GridView _gv public _IList<Poco> Source { get {_gv.DataSource;} set {_gv.DataSource = value; _gv.DataBind();} } Or should it be (from http://stackoverflow.com/questions/153222/mvp-pattern-passive-view-and-exposing-complex-types-through-iview-asp-net-web) private GridView _datasource; public DataSource { get { return _datasource; } set { _datasource = value; _datasource.DataBind(); } } Maybe I'm having it all wrong .... Where can I find an example that is not a "Hello world" example on MVP for ASP.Net???

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  • Dealloc on my custom objective-C

    - by VansFannel
    Hello. I'm developing an iPhone application, and I very new on iPhone development. I've created some custom classes with instance variables (NSArray, NSString, etc.). All classes inherits from NSObject. Should I create a dealloc method to release all instance variables? Thank you.

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  • Thrift,.NET,Cassandra - Is this is right combination?

    - by Vadi
    I've been evaluating technology stack for developing a social network based application. Below are the stack I think could well suitable for this application type of application: GUI -- ASP.NET MVC, Flash (Flex) Business Services -- Thrift based services One of the advantage of using Thrift is to solve scaling problems that will come in future when the user base increases rapidly. All the business logic can be exposed as a services using REST,JSON etc., This also allows us to go with C++ or Erlang based services when situation demands. Database -- mySQL, CasSandara mySQL can be used for storing the data which needs to be persisted. Cassandara will be used for storing global identifiers to the persisted data. Since Cassandara is also very good at scaling by introducing more nodes this will leverage Thrift based services as well. And also there is native support between Cassandara and Thrift Cache Server -- Memcached Any requests from Business Services will only talk to Memcached if any non-dirty data is required, otherwise there will be some background jobs that will invalidate the cache from database. The question is: Is the Thrift which is open-sourced one is production-ready? Is it the right stack for services layer to choose when the application (GUI) is primarily gets developed in ASP.NET and DB is mysql? Is there any other caveats that anyone here experienced? One of the main objective behind this stack is to easily scale up with more nodes and also this helps us to use Linux boxes, it will reduce our cost significantly Thoughts please ..

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  • C# Create Snap To Grid Functionality

    - by Nathan
    I am trying to create some snap to grid functionality to be used at run time but I am having problems with the snapping part. I have successfully drawn a dotted grid on a panel but when I add a label control to the panel how to I snap the top, left corner of the label to the nearest dot? Thanks

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  • How to create Python module distribution to gracefully fall-back to pure Python code

    - by Craig McQueen
    I have written a Python module, and I have two versions: a pure Python implementation and a C extension. I've written the __init__.py file so that it tries to import the C extension, and if that fails, it imports the pure Python code (is that reasonable?). Now, I'd like to know what is the best way to distribute this module (e.g. write setup.py) so it can be easily used by people with or without the facility to build, or use, the C extension. My experience is limited but I see two possible cases: User does not have MS Visual Studio, or the GCC compiler suite, installed on their machine, to build the C extension User is running IronPython, Jython, or anything other than CPython. I only have used CPython. So I'm not sure how I could distribute this module so that it would work smoothly and be easy to install on those platforms, if they're unable to use the C extension.

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  • How to create Python module distribution to gracefully fall-back to pure Python code

    - by Craig McQueen
    I have written a Python module, and I have two versions: a pure Python implementation and a C extension. I've written the __init__.py file so that it tries to import the C extension, and if that fails, it imports the pure Python code (is that reasonable?). Now, I'd like to know what is the best way to distribute this module (e.g. write setup.py) so it can be easily used by people with or without the facility to build, or use, the C extension, just by running: python setup.py install My experience is limited, but I see two possible cases: User does not have MS Visual Studio, or the GCC compiler suite, installed on their machine, to build the C extension User is running IronPython, Jython, or anything other than CPython. I only have used CPython. So I'm not sure how I could distribute this module so that it would work smoothly and be easy to install on those platforms, if they're unable to use the C extension.

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  • Patterns for implementing field change tracking.

    - by David
    Hi all For one of my recent projects, I had to implement field change tracking. So anytime the user changed a value of a field, the change was recorded in order to allow full auditing of changes. In the database, I implemented this as a single table 'FieldChanges' with the following fields: TableName, FieldName, RecordId, DateOfChange, ChangedBy, IntValue, TextValue, DateTimeValue, BoolValue. The sproc saving changes to an object determines for each field whether it has been changed and inserts a record into FieldChanges if it has: if the type of the changed field is int, it records it in the IntValue field in the FieldChanges table, etc. This means that for any field in any table with any id value, I can query the FieldChanges table to get a list of changes. This works quite well but is a bit clumsy. Can anyone else who has implemented similar functionality suggest a better approach, and why they think it's better? I'd be really interested - thanks. David

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  • Working out global tab order algorithmically?

    - by Mrgreen
    We have a proprietry system where we can configure fields on indiviual forms. However these fields have a global tab order (we cannot specify for a specific form). We have a bunch of forms (35 in total) which share a lot of different fields. Each form has a specific tab/edit order that needs to be configured. Example: Form 1 has fields A,B,C,D in that order. Form 2 has fields E,F,G,A in that order. Form 3 has fields E,B,H,I in that order. The global tab orders would be E,F,G,A,B,C,D,H,I Notice how A needs to come before B yet after G. Is there any easy way to work this out using the tab order lists for each form? I need to merge this tab order information into a single global tab order list. I have over 200 fields in total and it is near impossible to do by hand.

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  • singleton vs factory?

    - by fayer
    i've got 3 Log classes that all implements iLog interface: DatabaseLog FileLog ScreenLog there can only be one instance of them. initially i though of using single pattern for each class but then i thought why not use a factory for instantiation instead, cause then i wont have to create single pattern for each one of them and for all future Log classes. and maybe someone would want them as multiple objects in the future. so my questions is: should i use factory or singleton pattern here?

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  • Best Diff Tool?

    - by ila
    For all my present Diff / Merge needs I'm using Beyond Compare; when I decided to buy a license for it I tried other similar tools, both payware and freeware. Now BC is at version 3, and I think it's a great tool... but what are your experience in this field? Do you think there is something better? And what are the feature you like best on your favorite Diff tool? EDIT I'm recollecting here a list of the tools mentioned in the answers below, in order of preferences (more or less), separating pay- from free- ware and indicating supported operating system. Hope this helps. PAYWARE Beyond Compare (win + linux) - http://www.scootersoftware.com/ Araxis Merge (win + osX) - http://www.araxis.com/merge/index.html ExamDiff Pro (win) - http://www.prestosoft.com/edp_examdiffpro.asp ECMerge (win, osX, linux) - http://www.elliecomputing.com/Home/default.asp MergePlant (win) - http://www.mikado-ltd.com/ Changes (OSX) http://www.changesapp.com Deltopia DeltaWalker (win, osx, linux) http://www.deltopia.com/ FREEWARE FileMerge (OSX) - http://en.wikipedia.org/wiki/Apple_Developer_Tools#FileMerge Tortoise SVN (win) - http://tortoisesvn.net/ WinMerge (win) - http://winmerge.org/ ExamDiff (win) - http://www.prestosoft.com/ps.asp?page=edp_examdiff Diff Merge from SourceGear - http://www.sourcegear.com/diffmerge/index.html Perforce Merge (win + linux + OSX) - http://www.perforce.com/perforce/products/merge.html meld (linux) - sudo apt-get install meld http://meld.sourceforge.net/ Vimdiff - vim distribution KDiff3 - http://kdiff3.sf.net/ ediff - EMacs distribution Tiny Hexer Kompare (KDE, linux) - http://www.caffeinated.me.uk/kompare/ tkdiff (win, linux, osX) - http://tkdiff.sourceforge.net

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