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• Adding metadata attributes to MySQL table

  - by Jack

  I would like to add custom attributes to a MySQL table which I can read via php. These attributes are not to interfere with the table itself - they are primarily accessed by php code during code generation time and these attributes HAVE to reside in the DB itself. Something similar in concept to .NET reflection. Does MySQL support anything like this? Thanks.

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• Is key 'chord' functionality provided by Win32/.net?

  - by John

  Several MS apps support the concept of chords, like "CTRL+X,Y" which means "holding down CTRL, press X, then Y". Is this a bespoke thing they (and other companies) implement, or is it built into any APIs? It would be nice to be able to set up event handlers or accelerators based on chords rather than write code to do it.

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• Why "private" methods in the object oriented ?

  - by pointlesspolitics

  I understand it is a very basic concept in the oops. But still I cannot get my head around. I understood why member variables are private, so class user cannot abuse it by setting up invalid values. But how can this apply to the methods ?

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• AJAX in Rails - doing simple looping to update information when available

  - by Acidburn2k

  I am trying to get put out a simple site, which would pool the database every few seconds and update the information on the page dynamicly, when theres something new inserted. I am farily new to ruby, but I understand the whole concept of RJS, link_to_function and soforth. The question is, what is the best way how to implement some kind of simple loop, which would run after the page is loaded and update the DOM if there is something new to display. Thanks in advance for any tips!

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• Explaining abstraction to a non-programmer.

  - by Dominic Bou-Samra

  Abstraction is a concept that seems difficult to explain, without reverting to using programming terminology. I've thought about it a lot, and I can't come up with a satisfactory answer. Does anyone have any very general, yet very pertinent explanations? Metaphors, similes etc are all welcome.

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• What is the difference between "someValuesFrom" and "allValuesFrom"?

  - by ahmed

  In descriptive logic, what is the difference between "someValuesFrom" and "allValuesFrom"? In other words, the difference between (limited existential quantification) and (value restriction). For example, consider this picture: I have used the photoshop because I can't write some symbols. Is there any way to simplify the concept of somevaluefrom and allvaluesfrom?

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• Meaning of Primary Key to Microsoft SQL Server 2008

  - by usr

  What meaning does the concept of a primary key have to the database engine of SQL Server? I don't mean the clustered/nonclustered index created on the "ID" column, i mean the constraint object "primary key". Does it matter if it exists or not? Alternatives: alter table add primary key clustered alter table create clustered index Does it make a difference?

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• i recieved warning when set cookie

  - by jeya devan

  i used mvc concept for my project... i can set cookies index page... but i can not set cookies in view page,,, i received the following warning... Warning: Cannot modify header information - headers already sent by... thanks advance

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• Wallet Underflow? [closed]

  - by David T. McKee

  I am a software engineer who would love to "disconnect" from the "company store" so-to-speak. This concept of Stack-Overflow is great...so, because I know that software engineers need coffee and food, how do you monetize this? Just wondering.

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• Built-in precedence for Expression Trees?

  - by jdk

  I'm unable to find the .NET FCL built-in concept of precedence to leverage while constructing Expression Trees. Ref System.Linq.Expressions Namespace. Is this something that must be handled manually in code, or is it somehow implicit and I'm not recognizing it, maybe through helper methods or classes? I want to apply it to math operations to ensure 3 + 5 * 10 results in 53 instead of 80.

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• Feedback on using ASE on Android?

  - by systempuntoout

  Has anyone made use of ASE (Android scripting enviroment) for anything other than proof of concept apps? Is it worth studying? Any feedback would be great.

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• asp.net: Where can I put my source files.

  - by David Sykes

  I am developing a web form using Visual Web Developer Currently I have class source files in the same directory as the web form, or in the App_Code folder. I'd like to organise the files into folders within the web form folder, but I can't find a way of adding a reference to the folders, and they don't seem to be being picked up automatically. These are files that are under constant development. What is the asp.net/c#'s equivalent concept to c++'s #include?

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• Can lazy loading be considered an example of RAII?

  - by codemonkey

  I have been catching up on my c++ lately, after a couple years of exclusive Objective-C on iOS, and the topic that comes up most on 'new style' c++ is RAII To make sure I understand RAII concept correctly, would you consider Objective-C lazy loading property accessors a type of RAII? For example, check the following access method - (NSArray *)items { if(_items==nil) { _items=[[NSArray alloc] initWithCapacity:10]; } return _items } Would this be considered an example of RAII? If not, can you please explain where I'm mistaken?

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• Visual NHibernate from Slyce

  - by dotnetdev

  I found this tool Visual NHibernate at http://www.slyce.com/, but a search on here has not brought anything up for what I would have thought would have been a very popular product, in concept anyway. Has anyone used this product? Any feedback on it? Thanks

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• How can i Update /Get values in windows form while moving one form to other form(like cookies)?

  - by Jeyavel

  Hi, How can i Update /Get values in windows form while moving one form to other form(like cookies)? i need to update the values to some variable and again i am going to refer stored values and need to do some calculations. i have used Cookies in ASP.Net but i am not able to find out same concept in C#.net Windows forms . can any one help me for resolve this issues? Regards, Jeyavel N

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• Change background color for rows of an HTML table on click

  - by Sarah

  Hi, I need that when i check a checkbox i apply different background color to HTML table rows according to and ID of a user in database using jquery, and then i uncheck the checkbox go to previous state. For the record i am not asking for code i am asking for concept.

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• What is the relationship between domNode and htmlelement?

  - by Turtle

  Hello, I am confused about the two terms. What is the difference in browser-side javascript programming? I use dojo as framework. And there is only the concept of domNode. But browser debugger always told me something as htmlelement. Are they just the same thing with different names, or with some subtle differences? Thanks.

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• Naive question of memory references in Operating system

  - by darkie15

  Hi All, I am learning memory references pertaining to Operating systems and don't seem to get to the crux of understanding it. For example, I am not able to visualize this scenario properly: "A 36 bit address employs both paging and segmentation. Both PTE and STE are 4 bytes each". How are they related? I can guess that this question might be too simple for many. But any help understanding the above basic concept would be appreciable. Regards, darkie15

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• How to override old design with new design(using master pages)?

  - by arun

  Hi, iam migrating the site from asp.net1.1 to asp.net3.5, iam using new design layout with masterpage concept,in previeous site some pages are having usercontrols,these are mixed with old design, if i convert it using masterpage, iam getting old design combining with new design...pls can any one will help?iam fresher to development. Thanks in advance.

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• ASP.NET MVC & Web Services

  - by ANaimi

  Hello, Does adding a Web Service to my ASP.NET MVC project break the whole concept of MVC? That Web Service (WCF) depends on the Model layer from my MVC project to communicate with the back-end (so it looks to me like it needs to be part of the MVC solution). Should I add this to the Controller or Model layer?

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• use of system.exit(0)

  - by Warrior

  public class WrapperTest { static { print(10); } static void print(int x) { System.out.println(x); System.exit(0); } } In the above code System.exit(0) is used to stop the program. What argument does that method take? Why do we gave it as 0. Can anyone explain the concept?Thanks.

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• ruby nested classes and modules

  - by ash34

  Hi, I am familiar with the concept of nesting classes and modules within another module and grouping them in a namespace. What is the idea / purpose behind Nesting classes within another class class A class B def method_B ... end end end 2.Nesting modules within another class class A module c def method_c ... end end end thanks, ash

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• Show two differents values from the same field

  - by Hebert

  HI, i have two tables 1- name, id, code 2- id, value, concept One name can have two concepts and two values. i want to retreive this: Id, name, value1, value2. How can i do that? Tanks

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• Debugging MEF running in ASP.NET

  - by Jeffrey Lott

  I'm trying to do a proof of concept app for my work using ASP.NET WebForms and the Managed Extensibility Framework. I've got things up and running(ish), but I can't seem to figure out how to attach the instance of Visual Studio that has the MEF code in it to the instance of Visual Studio that is running the Web App. How can I attach my MEF code to the running process so that it hits my breakpoints?

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• Is serialVersioUID require in Interfaces(I hope not)?

  - by learner

  My understanding is serialVersionUID is applicable only to classes, because we can create an object only to classes and the concept of serialVersionUID is for object serialization and deserialization.

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