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• How to select a random element in std::set?

  - by dehmann

  How can I select a random element in an std::set? I naively tried this: int GetSample(const std::set<int>& s) { double r = rand() % s.size(); return *(s.begin() + r); // compile error } But the operator+ is not allowed in this way.

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• Programming mobile devices

  - by sax

  I love desktop and web programming, but I would like to be able to program some sort of small device I can then carry with me. Most mobile phones are quite hard to create programs for as they want you to buy the things they offer instead. What mobile-phone/gameboy size devices would be suitable for my goal?

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• How to compress the responses to reduce page weight in .net

  - by spj

  Hi Can anyone suggest the ways we can choose to reduce the size of the rendered html or response to reduce page weight in .net so that the client can experience a faster loading of the UI i've heard of JSON and GZip but don't have much idea about how to use it or even better ways are there

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• How to create desktop recorder in C#.net 2.0 without third party controls?

  - by user342777

  hi, I want to create one winform c#.net application that will record all the user activity happening on desktop.I want to create avi file for that record format.also want to upload that files to server shared folder. Please provide me code or sample project which can work on any OS.including vista and win7. also AVI file size should be compressed.

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• What are good diff tools that are self contained and can be used from a ...

  - by ldigas

  What are good diff tools that are self contained (small in size and in as little files as possible), and can be used from an USB with no extra fuss ? Not looking for command line ones. So far I found diffuse ... any more like it ?

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• display tag scope issue with pagination

  - by sarah

  Hi All, I am using display tag for pagination ,i am reading the list from request scope and displaying it,i have kept the page size as 1 and the list hast 4 values,if i press next i get nothing to display this is the case with request scope but not with session scope how can i tackle this problem?

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• Rendering CALayer in context uses large amounts of memory

  - by Otium

  I am taking a snapshot of a UIWebView layer, but when I render the webview's layer in the current context my app uses 10mb more memory, and I don't think that should be right. Here is my current code: CGSize imageSize = self.bounds.size; UIGraphicsBeginImageContextWithOptions(imageSize, YES, 0); CGContextRef context = UIGraphicsGetCurrentContext(); [self.layer renderInContext:context]; _snapshot = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext();

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• input type=image width being ignored

  - by kastulo

  im making an image button like this: <input type="image" src="red.jpeg" width="150px"> but it is displaying the original image size which is much larger, if i put: <img src="red.jpeg" width="150px"> it displays the image 150px wide as i want, what do you guys think is the problem with this? I have tried styling it with a class and CSS but not working either, please help me with this, im going nuts!!

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• An interview question on array comparison

  - by user288084

  There are two arrays with equivalent size. How to decide whether these two arrays contain the same set of elements, but the orders of these elements in the respective arrays are different. For instance. A = [a, b, c] B= [b, c, a]

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• How do i escape reserve names in a column? MySQL/Create Table

  - by acidzombie24

  I am generating tables from classes in .NET and one problem is a class may have a field name key which is a reserved mysql keyword. How do i escape it in a create table statement? (Note: The other problem below is text must be a fixed size to be indexed/unique) create table if not exists misc_info ( id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL, key TEXT UNIQUE NOT NULL, value TEXT NOT NULL)ENGINE=INNODB;

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• SVN branches: Delete branch locally, but do not show up as modified

  - by Quintin Par

  I accidently went and synced up my branches folder resulting in a download of all the branches on my local harddisk (very huge in size) Now how can I delete the branches locally but not show up in the svn as modified/missing? I use tortisesvn

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• CMS Layout Problem

  - by Sebi

  I made a small page (http://www.ovlu.li) using CMS Made Simple (http://www.cmsmadesimple.org/). It looks more or less okay in all browser, but the problem is, if a resize the window to a smaller size, sometimes the layout of the subnavigation layer is destroyed. Instead of getting smaller, all the elements are ordered more or less randomly. Any hints why?

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• question about heapsearch order

  - by davit-datuashvili

  ia have meet following problem suppose we have sorted array of size 2^k-1 where k is given number we should copy this array into heapsearch array b the elements in odd positions of a go in order into last half of the positions of b positions congruent to 2 modul0 4 go into b's secodn quarter and so on this is not homework and please nobody tag it as homework it is from programming pearls please any ideas

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• WinCheat / WinSpy-like tool for C++ Builder exes

  - by mawg

  I just came back to C++ Builder after 5 or more years away. I seem to remember a nice tool where I could drag its pointer over the GUI of my running application and get lots of info about what was pointed at - handle, size, text, parent, children, etc IIRC, if the exe include debug info I could also get the actual variable name as used in the source. Does anyone know what program I am talking about? Thanks

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• for_each but for setting each element to a value in C++

  - by Goose Bumper

  I have the following code to assign a value to all the elements of a vector: x = 100; for (int i=0;i<vect.size();i++) { vect[i] = x; } It's straightforward enough, but I'm wondering if there is a function in the STL that does the same thing; something like for_each, but for assignment.

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• C# - How to prevent fullscreen form covering the taskbar?

  - by Dodi300

  Hello. Does anyone know how I can prevent my C# winform covering/going on top of the taskbar? My form's border style has been set to "FixedToolWindow" which seems to cause this. I thought about reducing the height of the form, when the user makes the form maximized, but that wouldn't work as people may have different size taskbars. Any ideas? Thanks.

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• Lifting a math symbol in LaTeX

  - by Chris Conway

  I'm using the symbol \otimes as a unary operator and it's vertical alignment doesn't seem right to me. It wants to sit a bit below the baseline: and I tried using \raisebox to fix this, e.g., \raisebox{1pt}{$\otimes$}: But \raisebox doesn't seem to be sensitive to subscripts. The operator stays the same size while everything around it shrinks: The problem, I think, is that \raisebox creates its own LR box, which doesn't inherit the settings in the surrounding math environment. Is there a version of \raisebox that "respects math"?

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• UIView fine for iPhone 4in, but squashed in iPhone 3.5in

  - by coopersita

  I started a new project in the new Xcode, and I see that my default the main window is set to 320x548. I'm fine with that, but when I test my app, a view I added to my main xib, which is supposed to be 280x280, looks more like 280x200 when testing on 3.5in devices. I've tried changing the settings for that view in the xib, but nothing seems to affect it. How do I ensure background compatibility so that in older devices the view is the same size?

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• How to implement unix ls -s command in C?

  - by Annonymous

  I have to write a program in C which returns file size in blocks just like ls -s command. Please help.

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• Multiples of Numbers in a List

  - by handheldpenguin

  How would I print the multiples of a list of given numbers in a merged, sorted list? I.e. take 10 (multiples [4,5]) gives 4,5,8,10,12,15,16,20,24,25 I've got it working for lists of size 2 or 1 but I need a more general solution :)

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• pointer&dynamic memory

  - by gcc

  how many methods are there taking input by using with pointer and dynamic memory input 3 1 2 n k l 2 1 2 p 4 55 62 * # x x is stop character and first input 3 is for another variable int hakko; only hakko use first input the others will be hold in one pointer and input size not determined

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• Is there any way to identify a settings as a tab rather than doing it iphone settings menu?

  - by ahmet732

  I want to configure text font, size etc inside the application (for example in tabbar) rather than iphone settings menu.. How will I achieve this?

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• simple interview question

  - by calvin

  Input integer array: a[8] = { a1, a2, a3, a4, b1, b2, b3, b4 } Output array: a[8] = { a1, b1, a2, b2, a3, b3, a4, b4 } Forget all corner cases, make sure your solution works for any int array of size 2n. You can use one or two temp variables for looping or anything, but you shouldn't use any temp arrays/stacks/queues etc to store entire array or part of array. I'm able to get answer in O(n*log n), but I'm looking for better solution.

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• [.NET] Why is struct better with being less than 16 bytes

  - by user149578

  Hi folks: I'm studying struct; some book advises creating struct if it has an instance size less than 16 bytes. Why? Thanks for any reply.

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• Get possible number of Desktop Icons

  - by Gates127

  I've my screen resolution set to 1024 x 768 pixels and the icon size is 32x32 and default icon spacing (not changed). how can I calculate possible number of desktop icons that can fit into that resolution?

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