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• How to select ComboBox value after Data filled from DataSource

  - by Amadeus45

  Hi, I would like to set the selected value to a known value. However, after InititializeComponent() has been called, the data is not yet filled in a databound Combobox so I can't set my selected value there. Which event is triggered when the data has finished to be added in the combobox from the databound object ? Is there any other way you would suggest handling this ? Many thanks

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• Whats is active record A design Pattern OR A module

  - by piemesons

  Whats is active record "a design Pattern" OR "a module". Basically whats the difference between design pattern, module and some other terms we use.

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• hibernate many to many only save the new object and between table

  - by Joe

  I have the following tables: Student Student_Course Course Now when I create a student I only want to create a user and add a row to student_course. The "problem" I have is that when I set the set of courses in Student to cascade="save-update" that an update is also invoked on course. I was wondering if there was a way to prevent this.

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• When does n++ execute faster than n=n+1 ?

  - by gcc

  Related: http://stackoverflow.com/questions/24853/c-what-is-the-difference-between-i-and-i In C language, Why does n++ execute faster than n=n+1? (int n=...; n++;) (int n=...; n=n+1;) Our instructor asked that question in today's class. (this is not homework)

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• When should use Readonly and Get only properties

  - by Ram

  In a .NET application when should I use "ReadOnly" properties and when should I use just "Get". What is the difference between these two.

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• (iphone) how can I tell I need a 3.0 + iOS installed device when looking at apple doc?

  - by Eugene

  Hi, I've seen iphone related open source library which says something like, "You need 4.0+ iOS build environment but the code will run on 3.0+ iOS device." I wonder how those two requirements can differ and how can I tell a minimum 'device' iOS version which a certain api would need. For instance I want to use UIGestureRecognizer but the apple doc says it's 3.2+, but I want my app run on 3.12+. Is there a difference between build os requirement and device os requirement to run an app? Thank you

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• Business Units vs Teams in CRM 2011

  - by GuruJ

  I've been told a few times that Business Units in CRM 2011 are "tricky" and shouldn't be set up lightly since they have irreversible consequences for a CRM 2011 implementation. On the other hand, teams in CRM 2011 seem much more flexible in managing record security. For what reason would I still choose to set up Business Units in CRM 2011? What can I do with Business Units that I can't with Teams (and vice versa)?

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• Class hierarchy of objective c in iphone -for xcode

  - by vijay

  i want to know what is the hierarchy we have in xcode first we have to get window and from that i have to understand completely if i use the class as property of another like this //child inherits the parents @interface child:parent { // parent *parentobject; child *child; } then what is the difference b/w the class behaviour while using the as property for another class then what is contrast between the inheritance and property

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• Best three tier C# Implement "style"

  - by nXqd

  I'm new to C# three tier implement and I've found a lot of implementations in Internet. I don't know what difference and benefit from its . Thanks a lot for reading this and I'm waiting for your answers. And I really want to know your implementation :)

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• jquery css transform, why translate?

  - by Mark

  The CSS transform translate property, I don't get the difference between changing that value and changing the margin or position with css2. Where would you want to use transform? (ignoring the ie incompat for the moment)

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• Date & time query question (sql-server 2008)

  - by Gold

  hi i have table that contain date and time field. id|date|time ========= 1|01/01/2001|10:45 2|01/02/2002|11:45 3|01/03/2003|12:45 4|01/04/2004|12:55 i need to know the difference between the MAX(date) and the MIN(date) and the MAX(time) and the MIN(time) something like.... MAX(date)-MIN(date) ???..... thank's in advance

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• hash_map and stdext:: hash_map?

  - by bit-question

  Under the visual C++, we have " hash_map" and "hash_set". In g++, we have " stdext::hash_map" and " stdext::hash_set". Is there any difference in terms of their respective performance or other factors?

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• Precisely Compare 2 images for differences using OpenCV

  - by YS

  Hi, I am working on a project to capture images via webcam in a predefined time interval, and continuously compare the images to a template (good image) and give an error if the difference is tolerance set. I working out using OpenCV. Would like to have advice how should I do it, e.g. best method, etc. Appreciate if any one can help me on this. Thanks.

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• Use reflection to get the value of a property by name in a class instance

  - by TheMoot

  Lets say I have class Person { public Person(int age, string name) { Age = age; Name = name; } public int Age{get;set} public string Name{get;set} } and I would like to create a method that accepts a string that contains either "age" or "name" and returns an object with the value of that property. Like the following pseudo code: public object GetVal(string propName) { return <propName>.value; } How can I do this using reflection? I am coding using asp.net 3.5, c# 3.5

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• Local variable vs parameter

  - by Dhana

  function doIt(param) { var localVar = param; //do lots of stuff with localVar } function doIt(param) { //do lots of stuff with param } Is there any difference in terms of efficiency between the code above?

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• Hibernate (JPA) Entity with Static collection as a member

  - by Kyle Partridge

  Is it possible to have a static collection as a member of a hibernate entity? Say I have an object Question: public class Question { private String category; ... } Would it be possible to populate a static Set<String> that is a distinct set of all categories in the Database? I know I could just query this, but I was wondering if there was a more elegant solution, as it seems like something that other people may have come across.

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• Increase the length of Xcode's "recent project" list?

  - by Bogatyr

  I switch in Xcode between working on a lot of different projects frequently (some I'm actively working on, some are old projects where I'm looking up code I want to re-use or quote in SO answers :)), so that part of my "working set" of projects invariably ends up falling off the recent project list. I do use finder tabs for the full working set of current project folders, but I really like the fast switching available using the recent projects list. Is there a way to increase the length of this list so that I can see more recently opened projects?

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• Changing the block size of a dfs file in Hadoop

  - by Sam

  I found that my map tasks is currently inefficient when parsing one particular set of files (total 2 TB). I'd like to change the block size of files in the Hadoop dfs (from 64MB to 128 MB). I can't find how to do it in the documentation for only one set of files and not the entire cluster, does anyone know the command that would change the block size when I upload it (ie copy from local to the dfs)? Thanks!

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• Interface Vs Abstract Class

  - by Hari kanna

  In OOPS When to use Interface? When to use Abstract class? Real time example plz... Difference not needed...

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• How to query a collection of inherited object for a particular object type in grails ?

  - by quilovnic

  Hi, I have a this model : class Question{ Set components static hasMany = [components: QuestionComponent] } class QuestionComponent{ static belongsTo = Question } class QuestionComponentStatus extends QuestionComponent{ } class QuestionComponentOther extends QuestionComponent{ } I want to get only QuestionComponentStatus from Set components : questionInstance.components. ? Thanks a lot

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• How to take database backup ? My path is considering date format 103 slash(/) as folder which I dont

  - by Shantanu Gupta

  I am trying to take database backup. How can I do that when getdate is being appended with file name with format dd/mm/yyyy. declare @dbName VARCHAR(100) declare @path VARCHAR(100) set @dbName='CallMeIndia' set @path='F:\'+@dbName +'-'+convert(varchar(50),getdate(),103)+'.bak' BACKUP DATABASE @dbName TO DISK= @path

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• different types of parsing

  - by kostas_menu

  I have read the tutorial from ibm about xml parsing (http://www.ibm.com/developerworks/opensource/library/x-android/) In this example,there are four types of xml parsing.Dom,Sax,Android Sax and xml_pull.Could you please tell me what's the difference between these four types and when i have to use each one? Also,with every way of xml parsing in this tutorial,the feeds are shown in a listView. What i have to do in order to appear every announcement in a btn for example? thanks for your time!Merry Christmas:D

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• Google App Engine - Delete until count() <= 0

  - by user365918

  What is the difference between these 2 pieces of code? query=Location.all(keys_only=True) while query.count()>0: db.delete(query.fetch(5)) # -- while True: query=Location.all(keys_only=True) if not query.count(): break db.delete(query.fetch(5)) They both work.

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• Geometric Mean: is there a built-in?

  - by doug

  i tried to find a built-in for geometric mean but couldn't. (Obviously a built-in isn't going to save me any time while working in the shell, nor do i suspect there's any difference in accuracy; for scripts i try to use built-ins as often as possible, where the (cumulative) performance gain is often noticeable. In case there isn't one (which i doubt is the case) here's mine. gm_mean = function(a){prod(a)^(1/length(a))}

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• How can I write a cron job that will block my internet from 7pm to 7am? (So I can get some sleep)

  - by user242065

  I am using OSX 10.6 and it has cron built in. How can I write a cron job that will block my internet from 7pm to 7am every day? Im sure this must be simple but I could only find one example online and it didn't work. It said to: set /etc/hosts.allow flie to be empty set hosts.deny file to ALL : ALL I did this and google still came up.

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