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• Differneces between static class and instance class with private constructor

  - by dotnetdev

  Hi, Although a static class has only one instance and can't be instantiated, a class with a private constructor can't be instantiated (as the constructor can't be seen), so every time you call this class, this is the same one instance? Factory classes always follow the last convention (instance class with private constructor). Why is this? Thanks

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• Questions on runtime analysis properties

  - by ryanxu

  Am I wondering if the follow are true. If f(n) is O(g(n)) and f(n) is also O(g(n)) that means f(n) is also big T(g(n)) right? Also if either of the 2 above are false, then f(n) is not big T(g(n))?

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• Sybase ASA 8.0 trigger how to determine whether to insert ,update,delete operate.

  - by guaike

  Follow is my trigger of Sybase ASA 8.0 script: Create trigger dba.test after insert,delete,update order 1 on DBA.tb_press referencing old as _old new as _new for each row begin --How to detect deleteOperate,updateOperate? if deleteOperate then insert into syncLog(tableName,keyId,version,operate) select tb_press,_old.id,1,'delete' end if; end how to determine whether to insert ,update,delete operate.

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• Wrapping a Delphi TFrame descendant as an ActiveX control

  - by Mmarquee

  I am trying to wrap up a TFrame descendant as an ActiveX control, but don't seem to be able to get the control to show up in the ActiveX Control wizard. Is this approach possible, and if so, are there any working examples that I can be pointed at. I have tried to follow the instructions here, but as I said the control show in the list of available controls. Thanks in advance.

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• How do you find out about new Java technologies, tools and specifications?

  - by tputkonen

  One of the major challenges for any java developer is try to keep in pace of development of the language and new tools. Java is evolving all the time and it happens often that I hear from a friend or colleague about some useful tool I had never heard of before. I'd love to hear about how people find out when new java specs come out or an interesting, new tool is released? For example, what java blogs do you follow?

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• How to create a web proxy?

  - by Rakesh Juyal

  I want to create web proxy . I googled it and even found some tutorial but those were in PHP. If somebody is having tutorial of web proxy creation in java then please post it here Or simply let me know what approach should i follow to create web proxy. [ i will be using Tomcat { if that matters for your answer } ] Thanks Edit i guess i was not clear in stating what i require. Actually i am trying to develop a site like 'http://proxyug.com/' .

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• How to create a proxy server?

  - by Rakesh Juyal

  I want to create a proxy server. I googled it and even found some tutorial but those were in PHP. If somebody is having tutorial of proxy server creation in java then please post it here Or simply let me know what approach should i follow to create a proxy server. [ i will be using Tomcat { if that matters for your answer } ] Thanks

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• 2 column div layout: right column fixed width, left fluid, height relative to eachother

  - by Henrik

  I want a layout with two columns, two divs, where the left one has fluid width and the right one has fixed width. So far so good - see jsfiddle below - however, the height of the right column must be in relation to the height of the left column. So that if I have some content in the fluid column and would resize the browser window, thereby increasing or decreasing the height of the left column, the right one should follow and getting the same height. What I got so far: http://jsfiddle.net/henrikandersson/vnUdc/2/ Edit: Resolved, see comment below

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• about onmouseout event.please help.

  - by lazyanno

  as follow codes: <div id="outerBox" style="border:1px solid red;width:300;height:300" onmouseout="alert('out')"> <div id="innerBox" style="border:1px solid blue;width:50;height:50">inner</div> </div> why when i move mouse on the "innerBox", it was trigger alert('out') ? i want mouse out "outerBox" trigger alert('out') only, mouse on "innerBox" don't trigger alert. hot to do this? thanks all :)

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• When do you decide to use a visitors for your objects?

  - by kunjaan

  I always thought a method needs to be packed with the data. When would you want a method that is extrinsic to the object? What rule of thumb do you follow to have a visitor? This is supposing that you have full control of the object graph?

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• svn checkout with netbeans returns an error

  - by iamrohitbanga

  I have removed a data directory from my java source code. now when i try to commit source then i get the following error. org.tigris.subversion.javahl.ClientException: Working copy is corrupt Commit failed (details follow): Entry for 'directory' has no URL i get the same error when i remove a file. what is the reason. i am checking out on google code project website.

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• Node.js projects/tutorials?

  - by kNIGHTS

  Javascript/Ruby learner here, Is there any Node.js projects/tuts to follow besides creating a chat server? Thanks in advance!

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• AdWhirl implementation in iPhone Cocoa touch

  - by user571283

  Hi dudes, i'm starting to implement AdWhirl in my application. i follow the instructions which is belong to adwhirl but i cant see any ad in my application.i add the following methods in my viewcontroller class - (void)viewDidLoad { [super viewDidLoad]; AdWhirlView *adView=[AdWhirlView requestAdWhirlViewWithDelegate:self]; [self.view addSubview:adView]; } -(NSString *) adWhirlApplicationKey{ return @"myAdWhirlKey"; } -(UIViewController *) viewControllerForPresentingModalView{ return self; } i doesn't display anything. please help how to implement AdWhirl

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• VS2008 intellisense performance issue with large number of partial static classes

  - by scebula

  My question is a follow-up to the issue posted here regarding the Intellisense performance issue when building a large solution in VS2008 that has many partial static classes. Since Microsoft does not seem to be addressing the issue for VS2008, I would like to know if there are other ways around the problem? Waiting for VS2010 is not an option at this time. The proposed solution in the previous post is not practical as some of the partial classes may be regenerated and this would be a maintenance headache.

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• Design pattern to separate messages from actual process.

  - by Manish Gupta

  I am having a C# application to sync data between PC and palm devices. There are codes written like below: showMessage("synchronizing Table1"); Sync(destTable1,sourceTable1); Sync(destTable2,sourceTable2); showMessage("synchronizing Table2"); // more code How do I separate the actual process of synchronizing from displaying message? Which design pattern to follow? Thanks in advance...

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• Subversion and Windows Server 2008

  - by Frozzare

  Hello. I install the subversion on my windows server 2008. But it's only work localhost. It don't work when i try from another computer. I can't find out whats the problem is. Are there any ports or something like that i need to configure? This was the guide i follow Thaks for your help

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• using lambda instead of let in scheme

  - by Radagaisus

  Hey, In SICP 1.2.1 there is a function that makes a rational number, as follow: (define (make-rat n d) (let ((g (gcd n d))) (cons (/ n g) (/ d g)))) I'm just curious how you can implement the same thing using lambda instead of let, without calling GCD twice. I couldn't figure it out myself.

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• How can I merge 2 commits into 1

  - by michael

  Hi, I am trying to merge 2 commits into 1. So I follow this: http://www.gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html I did $ git rebase --interactive HEAD~2 It opens an editor I change 'pick' to 'squash' Save the editor But i get 'Cannot 'squash' without a previous commit' so what can I do to recover? When I do ' git rebase --interactive HEAD~2 Interactive rebase already started' When I do '$ git rebase --continue Cannot 'squash' without a previous commit' Thank you.

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• Appengine Model SelfReferenceProperty and parent child relationship

  - by GeekTantra

  I have a scenario in which I need a self reference property as follow: class Post(db.Model): creator = db.UserProperty() post_title = db.StringProperty(required=True) post_status = db.StringProperty(required=True, choices=['draft', 'published']) post_parent = db.SelfReferenceProperty() Now, I want ensure that an entity shouldn't be its own parent and a child of an entity cannot be its parent. How can I ensure this kind of a relationship in the PostForm model form and the Post model.

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• Quality for images in LaTeX documents

  - by Ladislav

  Hey all, What are some of the pointers that I need to follow if I want to have good quality images in a LaTeX document. These images are mostly screenshots of an software application or flow charts. Below are two such images. Flow Chart Screenshot Thanx Ladislav

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• jqgrid : how to change the class of one cell (when mouse is over on) ?

  - by Qualliarys

  Hi, I set cells of the first column of my grid, with a class as follow: $("#myGrid").jqGrid('setCell',rowid,'column_1', '', '**ui-state-default**'); How to change the class of a cell when the mouse is over on it ? Thanks you so much !

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• Stored procedure in scheduler , sql server 2005

  - by Zerotoinfinite

  Hi All, I am using Sql Server 2005. I have a stored procedure [say Sp_GetAllMaterialInfo], I want to put it in a scheduler that everyday this stored procedure execute on 2 P.M. daily. Please let me know the steps I have to follow to acheive in sql server 2005 Thanks in advance

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• Using NULL in MySQL

  - by JPro

  The data in my dabatase comes from an external source and where ever there is no data passed, I keep NULL in those places. Can anyone tell me if there are any implications in using NULL to represent empty value? Should I follow some other convention like 'data_not_available'? or something like that? Can anyone suggest?

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• how to install symfony on shared web server?

  - by Harish

  I have created a project in symfony(PHP Framework), and need to upload it on server, but i dont know how to do that, i got many methods on net, but i was not able to follow that. so please help.

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• Web Development Designing Method

  - by Raj

  HI can any one tell me which web development method is currently use. and can anyone also tell me related article or any other guide for it, am working on web development project in asp.net and Sql server (Clothing Website) as it is my first project after finishing my studies and i don't have much idea, which process should i have to follow

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