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• Nhibernate Common columns in base class

  - by sukh

  I want to design following scenario Base class (Id, Name, order, Value) 3 Derived classes derive1, derive2, derive3 inheriting properties from base There is no table for base class. And 1 table for each derived class. 3 tables have same columns. How can I create mapping file ignoring base class? Do I need to create 1 mapping file for each derived class? can I achieve this using only 1 mapping file?

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• Characters spilled over multiple columns in Oracle 11g?

  - by vicky21

  This is related to question: How to store unlimited characters in Oracle 11g? If maximum I need is 8000 characters, can I just add 3 more varchar2 columns so that I will have 4 columns with 2000 char each to get 8000 chars. So when the first column is full, values would be spilled over to the next column and so on. Will this design have any bad side effects? Please suggest.

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• Tuning Nvidia driver in Nvidia X Server Settings in Ubuntu to avoid tearing?

  - by c00kiemonster

  I'm running Ubuntu 10.10 on an Asus at3ion motherboard. I have installed the proprietary nvidia drivers and everything is working fine, but it's a but ragged when I move windows etc. I think the issue is called tearing. There is flickering and the window isn't refreshed smoothly. The ion acceleration works fine (I am running xbmc at 1080p completely without any issues). Please note I am not interested in any fancy effects etc, I just want the graphics to be smooth and nice. How can I tune the nvidia driver for this, i.e., what do I need to change in the Nvidia X Server Settings?

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• Recommended way to make consistent form validation error prompt?

  - by Satoru.Logic

  Hi, all. In most web projects, we do both client-side and server-side form validation. A major part of form validation is error prompt, the client-side and server-side form validation library probably have implemented this for us, but the error prompt looks different. How can I design a consistent error prompt for such a system? Thanks in advance.

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• Magento - determine which xml layout file a page is using?

  - by John

  I tried reading the documentation but I still don’t really understand how magento's xml layout files work. In the directory app/design/frontend/default/modern/layout, i see a lot of xml files. How do I determine which xml file any given page on the website is using? For example, if I were on the home page at http://mysite.com, which layout xml file am I using? What if I’m on http://mysite.com/hello-world, which xml file then?

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• How do I prevent my swf files being hotlinked, downloaded etc.

  - by undefined

  I have swf files that are embedded in a PHP page using SWFObject. These swf files are in the same directory as my PHP files. for example www.myurl.com/index.php embeds www.myurl.com/flashfile.swf, index.php and flashfile.swf are in the same directory. However I want to prevent people from being able to type in www.myurl.com/flashfile.swf and viewing the swf. I want the browser to deny access to this file unless it has been embedded by the PHP file. Should I move my swfs to another folder and protect this folder somehow - is this with the .htaccess file? I am running Apache on a linux machine. While my main concern is for swf files I would like to protect graphics used on the site too. all help appreciated thanks

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• iPhone application development adding subview in viewbased application

  - by Easwar

  I am having a scrollview and above the scrollview am having 6 view(6 subviews over the scrollview)each views have lables.How to add all these views in to my application am used interface builder to design these view.

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• FormsAuthentication AuthCookie data type

  - by FreshCode

  Does the original data type of the username string in a call to FormsAuthentication.SetAuthCookie(...) make any difference with regards to security or code maintainability? As I understand it, the cookie is encrypted and used to identify a user on each request. I'm curious whether it should affect the design of the primary key on my Users table in my database, eg. Guid vs int or a unique username string.

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• When knowledge of "multithreading" is specified in a C++ job description, what is the expectation?

  - by Vaibhav Khattri

  I understand it should cover threading primitives (mutex, semaphore, condition variables etc.) plus design patterns (such as those specified in POSA2). But what's more? Every project has its own multithreading scenarios and one may have not dealt with those that the job is expecting?. So how does one build their knowledge and prove that they have the ability?

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• Scripting an input element of an HTML form?

  - by dfjhdfjhdf

  By design I need an input element typed text but I do not need an input element typed submit. I want to submit what's written in the input element once the enter key pressed. How would I do that in JavaScript? Do I need tags and other stuff or could I do it without them (just using )?

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• Pass variables between separate instances of ruby (without writing to a text file or database)

  - by boulder_ruby

  Lets say I'm running a long worker-script in one of several open interactive rails consoles. The script is updating columns in a very, very, very large table of records. I've muted the ActiveRecord logger to speed up the process, and instruct the script to output some record of progress so I know how roughly how long the process is going to take. That is what I am currently doing and it would look something like this: ModelName.all.each_with_index do |r, i| puts i if i % 250 ...runs some process... r.save end Sometimes its two nested arrays running, such that there would be multiple iterators and other things running all at once. Is there a way that I could do something like this and access that variable from a separate rails console? (such that the variable would be overwritten every time the process is run without much slowdown) records = ModelName.all $total = records.count records.each_with_index do |r, i| $i = i ...runs some process... r.save end meanwhile mid-process in other console puts "#{($i/$total * 100).round(2)}% complete" #=> 67.43% complete I know passing global variables from one separate instance of ruby to the next doesn't work. I also just tried this to no effect as well unix console 1 $X=5 echo {$X} #=> 5 unix console 2 echo {$X} #=> "" Lastly, I also know using global variables like this is a major software design pattern no-no. I think that's reasonable, but I'd still like to know how to break that rule if I'd like. Writing to a text file obviously would work. So would writing to a separate database table or something. That's not a bad idea. But the really cool trick would be sharing a variable between two instances without writing to a text file or database column. What would this be called anyway? Tunneling? I don't quite know how to tag this question. Maybe bad-idea is one of them. But honestly design-patterns isn't what this question is about.

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• rewards the products qualify for

  - by Rod

  products purchased -------------------------- bana bana bana stra kiwi reward requirements table (related to a rewards table) reward id, products ---------------------- 1,bana 1,bana 1,bana 2,stra 2,bana 3,stra 4,cart 5,bana 5,bana 5,oliv Can you help me with sql to get rewards the products purchased qualifies for? In the case above the reward ids would be: 1 2 3 If there is a better design that would make the solution easier I welcome those as well. I'm using product names for the sake of easier explaining, I hope. (I'll replace with product ids later)

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• Is it okay to store user data in XML files?

  - by rity

  I have an app that is being used by a few users (< 12 users). There are less than 2000 records so I decided to use an XML file and store the file under \company\product\p.xml. Is this okay or am I breaking some design guidelines without realizing it? EnvironmentL .net/c#/winforms

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• Microsoft .NET security model

  - by Thomas

  Hi all, I am looking for informations about the security model of Microsoft .NET If you could explain me how it is design, or give me links to understand it, it would be very kind of you ! Thanks.

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• How Do I Hide wpf datagrid row selector

  - by Tim Almond

  I'm using the WPF DataGrid control to show some details and a select button, and I don't need the grey selector column down the left hand side. It's also ruining the beauty of my design ;) Is there a way to remove it, or how can I style it to match if not?

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• Should enumerators be placed in a separate file or within another class?

  - by Icono123

  I currently have a class file with the following enumerator: using System; namespace Helper { public enum ProcessType { Word = 0, Adobe = 1, } } Or should I include the enumerator in the class where it's being used? I noticed Microsoft creates a new class file for DockStyle: using System; using System.ComponentModel; using System.Drawing.Design; namespace System.Windows.Forms { public enum DockStyle { None = 0, Top = 1, Bottom = 2, Left = 3, Right = 4,. Fill = 5, } }

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• Manage 2 displays remotely

  - by neurino

  I have a pc with a nVidia Quadro graphic card. The card has 2 DisplayPort outs where 2 40" Full HD TV are connected. I need to run 2 separate fullscreen videos, one each display. The problem is displays are far from the pc station and I cannot control them from there. I tried with a remote desktop connection but when I connect screen 1 shows login and screen 2 simply blackens (I'm logged off). The pc, an HP, also has his native graphics card still installed it would be nice if I could connect there a 15" monitor with the desktop on and use the TVs only as secondary where I can send fullscreen videos. Any clue?

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• How is this GUI principle called?

  - by ripper234

  "Prefer to design UI that guides the user to provide correct input before submitting a form over presenting an error message when he submits it incorrectly" Is there a canonical link that explains this (similar to KISS)?

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• Can you suggest some UI related flex 3 interview questions for a senior pos?

  - by mohan talluri

  Our Company is looking for a sr.flex developer. As part of interview process customized UI understanding and implementation is also included. I am Usability&design Lead for the same product team have some understanding of flex 3 but am not sure if pure UI/usability questions can be answered by flex developer. So can you suggest some UI related questions to see if he/she has competency to refer a prototype(html/mockup's) and build the same UI in flex.

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• Should I still care about IE6?

  - by Nimbuz

  I've finished the design and about to code HTML for a website that will use fancy form elements and effects. I'm wondering if I should support IE6? What are the latest stats? Do you support IE6 still?

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• Applications of concurrent queues and stacks in .NET 4

  - by Jon Harrop

  .NET 4 includes new concurrent data structures. The Bag and Dictionary collections have obvious applications but I cannot see any use for the Queue and Stack data structures. What are people using these for? Also, I've noticed that the design based upon linked lists incurs a lot of allocation and that destroys scalability. This is surprising given that the sole purpose of these collections is multicore programming. Is this an inherent limitation or are they just badly implemented?

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• a good resource or book for architecting object-oriented software

  - by Ygam

  I have looked at a couple of books and all I have looked at were just discussing the technicalities of OOP. By technicalities I mean, here's a concept, here's some code, now get working. I have yet to see a book that discusses the architectural process, what are the ways of doing this, why doing this is bad, how to actually incorporate design patterns in a real-world project, etc. Can you recommend a good resource or book? I am mainly programming with PHP but a language-agnostic book/resource would do :)

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• Managed C++ Error 2504 Error

  - by Major

  I'm new to managed c++ and I'm attempting to design a program for a presentation. I am attempting to have a class inherit from an ABC and I'm getting the Error C2504. The code in question is as follows: ref class Item : Auction //Error C2504 here { //More code for the class Auction is defined in a different .h file. Let me know if there are any other questions or if you need to see more of the code. Thanks

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• Methods calling other methods in the same class

  - by dotnetdev

  Hi, In class design, is it a bad habit if one method calls another method in the same class (For example, 3 methods call 1 method in the same class). Thanks

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• Q&A website with Wordpress

  - by radi

  hi guys , i want to design a small website like stackoverflow (but in deferent language) and i want to use wordpress because it easy to use and have a lot of plugins and themes and it is opensource so : how can i do this website in wordpress and what are the plugins i need to help me mange it and make it secure . thanks and sorry about my english .

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