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  • Should I consider memmove() O(n) or O(1) ?

    - by Andrei Ciobanu
    Hello, this may be a silly question, but I want to calculate the complexity of one of my algorithms, and I am not sure what complexity to consider for the memmove() function. Can you please help / explain ? void * memmove ( void * destination, const void * source, size_t num ); So is the complexity O(num) or O(1). I suppose it's O(num), but I am not sure as I lack for now the understanding of what's going on under the hood.

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  • jQuery noob: change border color of element on hover of another element.

    - by Kyle Sevenoaks
    I'd try to explain what I mean, but there is an easier way: click here for jsfiddle example. Basically I want the border color of the div rfrsh_btn to change when productOptionsMenu is hovered over. I'm using jQuery with the .noConflict var because this site also uses Prototype. jQuery: var $j = jQuery.noConflict(); $j(".productOptionsMenu").hover( function () { $j(#rfrsh_btn).css({"border-color":"#85c222"}); }; ); Thanks :)

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  • Registry key editing vb6 startup

    - by Francesco D.
    Is it possible that someone here could explain how to use this code. Please keep in mind i am a complete amateur, so simplifications may be needed. Private Const cPGM = "C:\VB Forum\startup\Example.exe" Dim oShell As IWshShell_Class Set oShell = New IWshShell_Class oShell.RegWrite "HKLM\Software\Microsoft\Windows\CurrentVersion\Run\MyVBApp", _ cPGM, "REG_SZ" How exactly is this code used? Is it saved as an .exe file and ran or what? Thanks for your prompt reply and informational feedback.

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  • Java Thread - Memory consistency errors

    - by Yatendra Goel
    I was reading a Sun's tutorial on Concurrency. But I couldn't understand exactly what memory consistency errors are? I googled about that but didn't find any helpful tutorial or article about that. I know that this question is a subjective one, so you can provide me links to articles on the above topic. It would be great if you explain it with a simple example.

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  • How do you unit test your T-SQL

    - by AlexKuznetsov
    How do you unit test your T-SQL? Which libraries/tools do you use? What percentage of your code is covered by unit tests and how do you measure it? Do you think the time and effort which you invested in your unit testing harness has paid off or not? If you do not use unit testing, can you explain why not?

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  • setDelegate explanation

    - by mac
    Hi i am new to iphone developement , can any one explain me , why setDelegate is used, where we should use it. [request setDelegate:sender]; thanks in advance.

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  • What's the scope of a Python variable declared in an if statement?

    - by froadie
    I'm new to Python, so this is probably a simple scoping question. The following code in a Python file (module) is confusing me slightly: if __name__ == '__main__': x = 1 print x In other languages I've worked in, this code would throw an exception, as the x variable is local to the if statement and should not exist outside of it. But this code executes, and prints 1. Can anyone explain this behavior? Are all variables declared in a module global/available to the entire module?

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  • Use CSS referenced images in JSP pages

    - by Alex
    I am writing a java servlet (struts/JSP etc). I am trying to style a progress bar using CSS in a JSP page but get this error when using chrome's developer tools: Resource interpreted as image but transferred with MIME type text/plain. <%@ include file="../include/css/default.css" % And in the CSS file: background:url(../images/bg_bar.gif) no-repeat 0 0; Could anyone explain why this is and show how I can use this CSS in my page?

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  • How do I create an NSArray with string literals?

    - by Kyle
    I'm attempting to create an NSArray with a grouping of string literals, however I get the compile error "Initializer element is not constant". NSArray *currencies = [NSArray arrayWithObjects:@"Dollar", @"Euro", @"Pound", nil]; Could someone point out what I'm doing wrong, and possibly explain the error message?

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  • USB token with certificate

    - by Frengo
    Hi all! Someone could explain me how the USB token works? I have to implement that secure layer in a java application, but i don't know very well how it works! I know only the mecanism of a normal token key generator! Thanks a lot!

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  • php get future date time

    - by Sanjay
    I don't know how to explain this correctly but just some sample for you guys so that you can really get what Im trying to say. Today is April 09, 2010 7 days from now is April 16,2010 Im looking for a php code, which can give me the exact date giving the number of days interval prior to the current date. I've been looking for a thread which can solve or even give a hint on how to solve this one but I found none.

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  • post and pre increment in c

    - by jammkie same
    void main() { int a=2 , c; c=a++ + ++a + ++a + ++a; printf("%d",c); } prints 20, whereas void main() { int a=2; int c=a++ + ++a + ++a + ++a; printf("%d",c); } prints 17. Can someone explain the reason for this.

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  • Get owner's email address

    - by kape123
    I have android.permission.READ_OWNER_DATA but I can't find any reliable code that would explain how can I read email address of device's owner. And please don't turn this into 'why you wanna do that' thread. Thanks for help!

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  • What are the best JavaScript implementations of a gallery?

    - by gilles27
    We need to implement a gallery feature for our client's new website. They had a similar feature on their last site, which used Smooth Gallery, which in turn was based on Moo Tools. We could go ahead and do the same however, before we do, does anyone have any suggestions for alternatives and if so, please explain why you feel your choice is better.

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  • Integrating twitter pull request with another application

    - by jade
    i'm an absolute newbie to webapps, so please forgive if my question is quite naive or not upto the mark.i have been assigned a task to develop a web app which integrates the twitter pull request with another application using the particular application APIs.basically i dont know what it means.Can anyone explain what is intended to be done and if there is any example of such web apps if any,it will be most appreciated, so that i can get an idea of what is to be actually done.i'm planning to do this using ruby

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  • Public Private Key Encryption Tutorials

    - by Jake M
    Do you know of a tutorial that demonstrates Public Private Key encryption(PPKE) in C++ or C? I am trying to learn how it works and eventually use Crypto++ to create my own encryptions using public private keys. Maybe theres a Crypto++ PPKE tutorial? Maybe someone can explain the relationship(if any) between the public and private keys? Could anyone suggest some very simple public and private key values I could use(like 'char*32','char/32') to create my simple PPKE program to understand the concept?

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  • Can we find out the difference between 2 RGb colors to find out a 3rd color?

    - by AK
    2 colors are mixed together. If i have the RGB for the resultant color and RGB for one of the colors mixed, then somehow i could calculate the 2nd color? I will try to explain visually what i am trying to say. Here is a flickr link http://www.flickr.com/photos/48150615@N08/4407414157 I know that the circle in the middle has an opacity of 20% Is there any way to know the color value of the circle so that i can deduct that to get the same color value as the background color.

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  • xna manual animation

    - by tasyjean
    i want to animate 3d model in xna programmatically ,i tried to transform bones but nothing to happen only the whole model transform not individual bones as i want i read the 3d model by basic model processor so how i do this ? and is there any need to extended model processor like skinnedModelSample please explain the steps

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  • asp.net custom web user control -- button

    - by jreedinc
    Is it possible to create a custom button -- web user control? I want certain java scripts to trigger when buttons are clicked. If so, are there any articles out there that explain the basics? I completely understand that I can load javascript via .js link or dynamically at page load, but I would like to just drop a control on the page without manually adding code to every page on every one of my projects.

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  • I know I can't say myView.frame.origin.x = val - But why ?

    - by Allisone
    I know that I can't use that myView.frame.origin.x = 25.0; that I have to use instead CGRect myFrame = myView.frame; myFrame.origin.x = 25.0; myView.frame = myFrame; And I'm doing it all the time (f.e. in animations), but I don't know why I must do it that way. I would like to fill that gap in my understanding. Can someone explain ?

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