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  • drawing circle without floating point calculation

    - by zaharpopov
    This is common interview question (according to some interview sites) but I can find no normal answers in Internet - some are wrong and some point to complex theory I expect not looked for in interview (like Bressenham algorithm). The question is simple: The circle equation is: x^2 + y^2 = R^2. Given R, draw 0,0-centered circle as best as possible without using any floating point (no trigo, square roots, and so on, only integers)

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  • Display small form while main form is "locked"

    - by daemonsvk
    Hi there, i'm thinking about writing a WPF program that would require login and password at the app startup. I thought about small form with two textboxes as a login form. User will have to fill in his details and then the main form of the application will be unlocked. How will you solve this? Thanks for your answers, daemonsvk

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  • Create, sort, and print a list of 100 random ints in the fewest chars of code

    - by TheSoftwareJedi
    What is the least amount of code you can write to create, sort (ascending), and print a list of 100 random positive integers? By least amount of code I mean characters contained in the entire source file, so get to minifying. I'm interested in seeing the answers using any and all programming languages. Let's try to keep one answer per language, edit the previous to correct or simplify. If you can't edit, comment?

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  • @Override fix-code shortcut in NetBeans

    - by Bruce
    Hi guys, sorry for a silly question but I got angry after seeking the answer in NetBeans and in the net - is there any key shortcut for fixing @Override annotation in NetBeans (something like ctrl+shift+i for imports)? I do appreciate your answers, cheers.

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  • From a Maya scene to a WebGL animation, where to start?

    - by Tower
    Hi, I've got some time, and I really would like to learn to get my Maya animated scenes into WebGL. I'm not sure where to start really. It would be amazing if I could make a Canvas element and place a Maya scene into it so that it's animating. Does anyone got a tutorial or some hints? PS. Answers about 3ds Max are also welcome!

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  • Can processor cores thrash each other's caches?

    - by Jørgen Fogh
    If more than one core on a processor is accessing the same memory address, will they thrash each other's caches or will some snooping protocol allow each to keep the data in L1-cache? I am interested in a general answer as well as answers for specific processors. How many layers of cache are invalidated? Will accessing another address within the same cache-line invalidate the entire line? What can you do to alleviate these problems?

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  • Uncaught ReferenceError: jQuery is not defined "jquery-ui.js:338"

    - by Chad Sellers
    My jquery script reference are : <script src="http://code.jquery.com/jquery-latest.min.js" type="text/javascript"></script> <script src="http://code.jquery.com/ui/1.9.1/jquery-ui.js" type="text/javascript"></script> I'm using Chrome Version 23.0.1271.64 m - And I'm getting an error on line 338 })( jQuery ); //-- line 338 is highlighted This is a 1st for me and looking for answers.

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  • which view/widget can support zooming in android?

    - by Sephy
    Hi everybody, I think my question is fairly clear, I would like to know if every kind of view can support zoom. I know that some have built in zoom controls like the MapView and the WebView, but how about a LinearLayout with some TextViews and ImageViews? I will edit this post to have a list of the answers.

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  • what's wrong in File.Exist() method?

    - by Arseny
    Reading some answers with code samples I notice that those where this method mentioned are subjected to criticism. I'm using this method in my code. So I'd like to know if someone give me detailed response whuy this method is not recomemnded and what alternative approaches are?

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  • A good open source web crawler for indexing Specific website for specific contents?

    - by Peeyush
    Hello Please suggest me a good open source web crawler written in C++,JAVA or PHP. i just need to crawl/index some specific websites for specific contents(images,text,videos). i know that their are already a lot of question & answers about this topic on this website but i am a little confused after reading all of them. So i am sorry if i am repeating the same question again. -Thanks in advance

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  • Whats the Best Way to boost my StackOverflow score? [closed]

    - by 5arx
    I just joined stack overflow and am finding it very useful. But getting my score up to the level where I can actually do things like answer questions, mark people's answers up or down and so on is proving to be painfully slow. Can any of you SO hacks and experts furnish me with tips to get my score climbing ...? Thanks, 5arx

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  • jquery event handler- trigger function upon specific key and action

    - by Gal
    Background story: when a user selects a portion of text in a text field with her mouse (mark it up manually), and subsequently hits "alt" key, a certain function would trigger. My questions are: How can I trigger a function when a user hits a key (in her keyboard)? How can I preserve a portion of text selected, and use it as a parameter for that function? I've tried looking up online but haven't found any good answers, but i'd greatly appreciate links as well.

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  • [game] How to write ::: in cpp and ??? in c#?

    - by daveny
    These questions are a kind of game, and I did not find the solution for them. It is possible to write ::: in Cpp without using "" or anything like this and the compiler will accept it. (macro-s are prohibited too) And the same is true for C# too, but in C#, you have to write ???. I think Cpp will use the :: scope operator and C# will use '? :' , but I do not know the answers to them. Any idea?

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  • How do I make Subversion (SVN) send email on checkins?

    - by Joe Ludwig
    I've always found checkin mails to be very useful for keeping track of what work other people are doing in the codebase. How do I set up SVN to email a distribution list on each checkin? Edit: I'm running clients on Windows and the server on Linux. The answers below for various platforms will likely be useful to other people though.

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  • Add multiple hist fit to a figure, without the hist

    - by clowny
    Hello, I'm a matlab newbie, and i'd like to superpose some hist fit on a same figure. I know the function histfit, but unfortunatly i can't get to remove the hist and only keep the curve. I guess once i'll know how to do that i'll be able to add several curves using "hold on". Thanx for any answers or advices!

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  • UnsupportedOperationException on Collection

    - by Duke Vador
    While studying the Collection API, we find that some methods (add, remove,...) may throw a java.lang.UnsupportedOperationException if the current implementation of the Collection does not support those functionalities. Is there,actually, in the JDK, a concrete Collection that does not support those methods ? Thanks a lot for your answers.

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  • symfony 1.4: doctrine build model warning

    - by tigerstyle
    Hi volks, I copied my sources from my lokal dev (everything works fine) to my repository and from there I did a checkout on my remote dev. Now when I try to build everything I get this error: devel:/var/www/myproject# ./symfony doc:build-model doctrine generating model classes file+ /tmp/doctrine_schema_48726.yml Warning: file_get_contents(/var/www/myproject/lib/model/doctrine//base/BaseAdvert.class.php): failed to open stream: No such file or directory in /var/www/myproject/lib/vendor/symfony/lib/plugins/sfDoctrinePlugin/lib/task/sfDoctrineBuildModelTask.class.php on line 77 Do you know what the problem could be? Thx for your answers :)

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  • How to read using C++ (C#) sound stream sent by flash?

    - by Oleg
    Hello. I need to read sound stream sent by flash audio in my C++ application (C++ is not a real limitation, it may be C# or any other desktop language). Now flash app sends audio to another flash app but I need to receive the same audio by desktop application. So, is there a standard or best way how to do it? Thank you for your answers.

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  • c++ std::ostringstream vs std::string::append

    - by NickSoft
    In all examples that use some kind of buffering I see they use stream instead of string. How is std::ostringstream and << operator different than using string.append. Which one is faster and which one uses less resourses (memory). One difference I know is that you can output different types into output stream (like integer) rather than the limited types that string::append accepts. Here is an example: std::ostringstream os; os << "Content-Type: " << contentType << ";charset=" << charset << "\r\n"; std::string header = os.str(); vs std::string header("Content-Type: "); header.append(contentType); header.append(";charset="); header.append(charset); header.append("\r\n"); Obviously using stream is shorter, but I think append returns reference to the string so it can be written like this: std::string header("Content-Type: "); header.append(contentType) .append(";charset=") .append(charset) .append("\r\n"); And with output stream you can do: std::string content; ... os << "Content-Length: " << content.length() << "\r\n"; But what about memory usage and speed? Especially when used in a big loop. Update: To be more clear the question is: Which one should I use and why? Is there situations when one is preferred or the other? For performance and memory ... well I think benchmark is the only way since every implementation could be different. Update 2: Well I don't get clear idea what should I use from the answers which means that any of them will do the job, plus vector. Cubbi did nice benchmark with the addition of Dietmar Kühl that the biggest difference is construction of those objects. If you are looking for an answer you should check that too. I'll wait a bit more for other answers (look previous update) and if I don't get one I think I'll accept Tolga's answer because his suggestion to use vector is already done before which means vector should be less resource hungry.

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