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  • How value objects are saving and loading?

    - by yeraycaballero
    Since there isn't respositories for value objects. How can I load all value objects? Suppose we are modeling a blog application and we have this classes: Post (Entity) Comment (Value object) Tag (Value object) PostsRespository (Respository) I Know that when I save a new post, its tags are saving with it in the same table. But how could I load all tags of all posts. Has PostsRespository got a method to load all tags? I usually do it, but I want to know others opinions

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  • NHibernate (or other worth recommendation ORM), real life example?

    - by migajek
    I'd like to learn database applications in C# and I'm about to select some framework. I heard many recommendations of NHibernate, however I haven't decided yet. Anyway, I'd like to know if there's any real-life example (with sources) of NHibernate in C#, to learn best practices etc.? I know all of them are probably covered in the docs, but working example helps a lot understanding the proper development pattern.

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  • Suggestions on how to implement a UI Element to display a long image in iPhone.

    - by Tattat
    I want to display a long image on iPhone. The user can swipe left or right to see difficult parts of the image. I want to spite the long image into different parts... for example, a long long image is 1000* 100; I want to display 100*100 for each time. When the image is loaded, it shows from x:0 to x:100. When user swipe right, it becomes x:101, x:200. When the user swipe left, it back to x:0, x:100, when the user continue to swipe right, it show x:201, x:300. I am thinking how to implement this specified imageView. I have two ideas now. First, make my own imageView, which super class is UIImageView, and overriding the swipe left, swipe right method. Second, make my own UIView. just implement the user swipe left/right action. Which way you think is better, or any better ideas on implement this? thz u.

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  • How do I calculate the average direction of two vectors

    - by Mike Broughton
    Hi, I am writing and opengl based iphone app and would like to allow a user to translate around a view based on the direction that they move two fingers on the screen. For one finger I know I could just calculate the vector from the start position to the current position of the users finger and then find the unit vector of this to get just the direction, but I don't know how I would do this for two fingers, I don't think adding the components of the vectors and calculating the average would work so I'm pretty much stuck... thanks in advance

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  • RedStation.com is heaven for ddos attackers, How to file complaint?

    - by Ehsan
    Sorry, I don't know where to open this subject. This is not the first time we have faced with a massive DDOS attack from one of servers in RedStation.com and even after we had contacted with their abuse department with it's log there is no cooperation and they don't even like to bother themselves about it. and we don't know how to stop such activity. Do you know how to file complaint against this datacenter? we could not be patient anymore and see they are not care about such things on their network ? it seems like they are heaven for attackers now since they close their eyes to gain more money. I guess some global organization is missing in this matter to investigate such activity and make sure providers are responsible for their services. Here is some of it's log: 2686M 75G DROP all -- * * 31.3-RedStation 0.0.0.0/0 rt: 16167 0.002007 31.3-RedStation -> my-server-ip UDP Source port: 36391 Destination port: 16167 0.002011 31.3-RedStation -> my-server-ip UDP Source port: 38367 Destination port: 16312 0.002014 31.3-RedStation -> my-server-ip UDP Source port: 39585 Destination port: 12081 0.002018 31.3-RedStation -> my-server-ip UDP Source port: 39585 Destination port: 12081 0.002021 31.3-RedStation -> my-server-ip UDP Source port: 38367 Destination port: 16312 0.002025 31.3-RedStation -> my-server-ip UDP Source port: 39585 Destination port: 12081 0.002033 31.3-RedStation -> my-server-ip UDP Source port: 36391 Destination port: 16167 0.002037 31.3-RedStation -> my-server-ip UDP Source port: 38367 Destination port: 16312 0.002040 31.3-RedStation -> my-server-ip UDP Source port: 38367 Destination port: 16312 0.002044 31.3-RedStation -> my-server-ip UDP Source port: 38367 Destination port: 16312 0.002047 31.3-RedStation -> my-server-ip UDP Source port: 39585 Destination Any response would be appreciated

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  • C++: Static variable inside a constructor, are there any drawbacks or side effects?

    - by doc
    What I want to do: run some prerequisite code whenever instance of the class is going to be used inside a program. This code will check for requiremts etc. and should be run only once. I found that this can be achieved using another object as static variable inside a constructor. Here's an example for a better picture: class Prerequisites { public: Prerequisites() { std::cout << "checking requirements of C, "; std::cout << "registering C in dictionary, etc." << std::endl; } }; class C { public: C() { static Prerequisites prerequisites; std::cout << "normal initialization of C object" << std::endl; } }; What bothers me is that I haven't seen similar use of static variables so far. Are there any drawbacks or side-effects or am I missing something? Or maybe there is a better solution? Any suggestions are welcome.

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  • Are methods also serialized along with the data members in .NET?

    - by Shaza
    The title is obvious, I need to know if methods are serialized along with object instances in C#, I know that they don't in Java but I'm a little new to C#. If they don't, do I have to put the original class with the byte stream(serialized object) in one package when sending it to another PC? Can the original class be like a DLL file?

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  • What do people find difficult about C pointers?

    - by Paul
    From the number of questions posted here, it's clear that people have some pretty fundemental issues when getting their heads around pointers and pointer arithmetic. I'm curious to know why. They've never really caused me major problems (although I first learned about them back in the Neolithic). In order to write better answers to these questions, I'd like to know what people find difficult. So, if you're struggling with pointers, or you recently were but suddenly "got it", what were the aspects of pointers that caused you problems?

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  • image processing project.......................

    - by user358886
    i have got a project to differentiate between fake currency and real currency using image processing but i am having no notion about my project neither i am getting any type of support from my mentor.and i am really frusted about my project.if any one know any thing then let me know...

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  • iPod Touch (OS 3.0) bluetooth connection to non apple device

    - by Avi
    I need to know if I can programmatically connect my iPod Touch (OS 3.0) to a non apple blue tooth device, Using the Apple iPhone SDK. I know that I can connect to other iPhone using GameKit API, But can I connect to other non apple Bluetooth devices for example an measuring device that send out real time data over blue tooth?

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  • Double join with habtm in ActiveRecord

    - by Daniel Huckstep
    I have a weird situation involving the need of a double inner join. I have tried the query I need, I just don't know how to make rails do it. The Data Account (has_many :sites) Site (habtm :users, belongs_to :account) User (habtm :sites) Ignore that they are habtm or whatever, I can make them habtm or has_many :through. I want to be able to do @user.accounts or @account.users Then of course I should be able to do @user.accounts < @some_other_account And then have @user.sites include all the sites from @some_other_account. I've fiddled with habtm and has_many :through but can't get it to do what I want. Basically I need to end up with a query like this (copied from phpmyadmin. Tested and works): SELECT accounts.* FROM accounts INNER JOIN sites ON sites.account_id = accounts.id INNER JOIN user_sites ON sites.id = user_sites.site_id WHERE user_sites.user_id = 2 Can I do this? Is it even a good idea to have this double join? I am assuming it would work better if users had the association with accounts to begin with, and then worry about getting @user.sites instead, but it works better for many other things if it is kept the way it is (users <- sites).

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  • Hint to MVC view generator for primary key on POCOs

    - by myotherme
    When generating a strongly-typed Index view for my model I always get the following: <%= Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) %> I am using a POCO class for use with our ORM. As I understand it when using LINQ to SQL the view code will know which field is the primary key. Is there a way that I can an attribute to the property (or class) that will let the View Generator know that the ID property if the primary key?

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  • traits in php – any real world examples/best practices?

    - by Max
    Traits have been one of the biggest additions for PHP 5.4. I know the synatax and understand the idea behind traits, like horizontal code re-usage for common stuff like logging, security, caching etc. However, I still dont know yet how I would make use of traits in my projects. Are there any open source projects that already use traits? Any good articles/reading material on how to structure architectures using traits?

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  • iOS - How to iterate through list of files on website directory

    - by svjim
    On iOS, I am looking for the proper way to return the URLs for a list of files that are in a directory. /images 1.jpg 2.jpg 3.jpg ... I know the URL for the directory and know all the files in the directory will be of type jpeg. It is not clear to me how to properly format the NSURLRequest to return the list of files in the images directory. Once the list is returned, I will iterate through it to return the individual images.

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  • Relational Database arrays (H2, Java)

    - by Daddy Warbox
    I seem to have two options on how to implement arrays, and I want to know which I should go with: Use the ARRAY data type and (from what I understand) effectively serialize data objects into the database (which in my case are just wrapped primitive types; don't know of another way to make this work). Use a separate table and map with foreign keys for each array item. If you have experience with this (especially with H2), which would you recommend?

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  • core at which function is running

    - by kumar
    hi, consider a kernel tasklet scheduled and executing the tasklet function. Is there a way to know which core the tasklet is running ? I mean is there a function / variable to know at which core the tasklet is running at. Architecture is arm. Thanks!

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  • How to construct objects based on XML code?

    - by the_drow
    I have XML files that are representation of a portion of HTML code. Those XML files also have widget declarations. Example XML file: <message id="msg"> <p> <Widget name="foo" type="SomeComplexWidget" attribute="value"> inner text here, sets another attribute or inserts another widget to the tree if needed... </Widget> </p> </message> I have a main Widget class that all of my widgets inherit from. The question is how would I create it? Here are my options: Create a compile time tool that will parse the XML file and create the necessary code to bind the widgets to the needed objects. Advantages: No extra run-time overhead induced to the system. It's easy to bind setters. Disadvantages: Adds another step to the build chain. Hard to maintain as every widget in the system should be added to the parser. Use of macros to bind the widgets. Complex code Find a method to register all widgets into a factory automatically. Advantages: All of the binding is done completely automatically. Easier to maintain then option 1 as every new widget will only need to call a WidgetFactory method that registers it. Disadvantages: No idea how to bind setters without introducing a maintainability nightmare. Adds memory and run-time overhead. Complex code What do you think is better? Can you guys suggest a better solution?

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  • Problems with starting windows service on windows xp SP3

    - by Michiel Peeters
    I'm currently facing a problem which I can not resolve and I really don't know what to do anymore. When I'm trying to start the service I receive the message: "The service is started but again also stopped, this because that some of the services will stop if they have nothing to do, for example the performance logs and the alerts service". I've looked into the Windows Logs but nothing is written there which could describe why my service is all the time stopping. I've also tried to fire the windows service via the command prompt which gives me the message: "The service is not started, but the service didn't return any faults.". I've tried to remove all keys which references to my service, which didn't resolve the issue. I've searched on google (maybe not good enough) to find an answer but I didn't found any. I did found some websites which describes what I could do, but all of these suggestions didn't work. This is kinda ** because I do not know where to look. I do not have any error message, i do not have any id which i can use to search on. I really don't know where to start and I hope you guys can help me on this one. Detailed explanation about the windows service OS: Windows XP SP3 .Net Framework: .Net 4.0 Client Profile Language: C# Development environment: Visual Studio 2010 Professional (but Visual Studio 2012 RC is installed) Communications: WCF (Named Pipes), WCF (BasicHTTPBinding) Named Pipes: I have chosen for this solution because I wanted to communicate from a windows service to a windows form application. It worked now for quite some time but suddenly my windows service shuts it self down and I couldn't restart it anymore. There are two named pipes services implemented: An event service which will send any notification to the windows form application and an management service which gives my windows form application the possibility to maintain my windows service. BasicHTTPBinding: The basic http binding makes the connection to a central server. This connection is then used for streaming information from the client to the server. I do not know which additional information you will need, but if you guys need something then I'll try to give it as detailed as possible. Thank you in advance.

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  • What's the name of the storage paradigm that uses cubes subdivided into 8 smaller cubes ad infinitum?

    - by Eric
    If I have a cube divided into 8 smaller cubes, each of which may be subdivided into a further 8 cubes, ad infinitum, what is the name of my system? I know that it's a special case of a tree, where each brance contains exactly 8 other leaves/branches. I remember the name starting with "Oct", and there was a wikipedia article on it, but I honestly can't find it! Does anyone know what such a data structure is actually known as?

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