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  • are there compiler options in clang? [on hold]

    - by Deohboeh
    I am learning from The C++ Primer. One of the exercises is to compile a program with arguments in main(). For this I am trying to use mac terminal. I need to compile a C++11 Unix executable file named "main" which takes “f" as an argument. I am using Xcode 4.6.3 on OS X Lion. I compiled the program with clang++ -std=c++11 -stdlib=libc++ main.cpp -o main. But don’t know what to do next. I found -frecord-gcc-switches while searching compiler options on google. It does what I need to do. Is there a clang version of this? Please use simple language. I have never used command line before. I tried going through the clang user guide but a lot of it is out of my depth.

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  • What's the reason exceptions are heavily used in managed (C# and Java) languages but not in C++? [on hold]

    - by ZijingWu
    AFAIK, a lot of C++ projects don't allow exceptions and deny them in coding guidelines. I have a lot of reasons, for example, exception is hard to handle correctly if your binary needs to be compiled by separate and different compilers. But it doesn't fully convince me, there is a lot of projects which are just using one compiler. Compared to C++, exceptions are heavily used in C# and Java and the reason can only be that exception are not bringing enough benefit. One point is debugbility in practice. Exception can not get the call stack in C++ code, but in C# and Java you can get the call stack from exception, it is significant and makes debugging easier. No-callstack is not the fault of the exception, it is the language difference, but it impacts the exception usage. So what's the reason that exceptions are frowned upon in c++ programs?

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  • Observer Pattern Implementation

    - by user17028
    To teach myself basic game programming, I am going to program a clone of Pong. I will use the Observer design pattern, with an interface between the input and the game engine. However, I'm not sure what the interface should do. One idea I had was for the input interface to tell the game engine that (e.g.) the screen was clicked, then to let the game engine decide what to do with that information (shoot a bullet, for example). Another idea I had was for the input interface, having caught the mouse click, to tell the game engine to shoot a bullet. Which method would be better for me to use?

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  • Friday Spotlight: A Webcast You Do Not Want To Miss!

    - by Chris Kawalek
    Happy Friday! Today's Spotlight is about what promises to be an information packed webcast next week. We're really excited about it and hope that you are, too! Oracle Managed Cloud Services uses Oracle VM to serve up thousands of Oracle applications to thousands of end users every day. To do this, they utilize nearly 20,000 instances of Oracle VM. It's an amazing story of high availability in an unrelenting customer environment, and it's all powered by Oracle. You can leverage this team's experience in your own deployments to gain valuable insight and best practices. If you'd like to understand how well Oracle VM can scale for your organization, you do not want to miss this webcast. It is coming up this Tuesday at 10AM Pacific Time. Click the banner below to register and we hope to see you there! Oracle VM: Design Considerations for Enterprise-Scale Deployment  Tuesday, June 10, 2014 10:00 AM PDT / 1:00 PM EDT

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  • Looking for parallel programming problem

    - by Chris Lieb
    I am trying to come up with a problem that is easily solvable in a parallel manner and that requires communication between threads for a test. I also am trying to avoid problems that require require random waits, which rules out dining philosophers and producer-consumer (bounded buffer), two of the classics. My goal is for the student to be able to write the program in less than 20-30 minutes in front of a computer not knowing of the problem beforehand. (This is to prevent preparation more than to come up with something novel.) I am trying to stress the communication aspect of the program, though the multi-threaded nature is also important. Does anyone have some ideas? Edit: I'm using Google Go for the language and testing comprehension of the goroutines/channels combo vs an actors library that I authored.

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  • Bug? Flash of white when changing orientation on iOS Safari [migrated]

    - by Baumr
    What causes the flash of white to the right of a responsive design when changing orientation from portrait to landscape on iOS? Try it on iOS6 Safari: Websites like this don't do it: http://html5boilerplate.com But this one does: http://www.initializr.com Something to do with re-processing (CPU lag) to fit a wider screen? It doesn't happen in Chrome for iOS6... Update: I just removed all img and from my testing site, but it still happens. This seems to happen with a lot of different websites out there. Is it a bug with their code, or a Safari for iOS bug? Others are completely immune to it...

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  • Building an instance system.

    - by Kyle C
    I am looking into how to design an instance system for the game I am working on. I have always wondered how these are created in games like World of Warcraft, where instances == dungeons/raids/etc). Areas that are separated from players other than those in your group, but have specific logic to them. Specifically how can you reuse your existing code base and not have a bunch of checks everywhere ? if (isInstance) do x; else do y; I don't know if this will make too much of a difference on any answers, but we're using a pretty classic "Object as pure aggregation" component system for our entities.

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  • Graphiste.com : un site qui s'occupe de l'identité visuelle de vos applications et sites et met en compétition de nombreuses propositions

    Graphiste.com : un site qui s'occupe de l'identité visuelle de votre application Ou de votre site, 10% de réduction pour les lecteurs de Developpez.com avec le code DEV10 Il y a deux mois, nous lancions un débat sur le fait de savoir si un développeur peut réaliser un bon design Web sans être lui-même un Web-designer. Plus largement, c'est toute la question d'une identité graphique qui est posée. Un point qui est souvent mis de côté dans l'IT et qui est pourtant crucial. Le logo d'une entreprise ? souvent repris pour son application (cf. Facebook, Instagram, etc.) ? permet en effet de se différencier au premier co...

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  • How to create a simple side scroller game

    - by D34thSt4lker
    I'm still pretty new to game programming and any tutorial that I have worked with stuck to only games with the initial screen. I want to start creating my own games but there are a few things that I still need to learn. One of them is how to create a game that side-scrolls. For example; Mario... Or ANY type of game like that... Can anyone give me a small example to create something like that. I'm not asking for any specific language because currently in school I am learning javascript but I know some c++/java/processing/objective-c as well. So any of those languages would be fine and I could probably implement it in any of the others... I have been searching for some help with this for a while now but could never actually get any help on it. Thanks in advance!

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  • GUI time is different than command line time

    - by Kyle
    I have kind of an odd problem. The time in my Unity bar is right, but the time in bash is 2 hours ahead. $ date Wed Jun 20 15:31:55 CDT 2012 Unity bar: Wed Jun 20 13:31:55 Here are my etc configs: $ cat /etc/timezone America/Los_Angeles locale: $ locale LANG=en_US.UTF-8 LANGUAGE= LC_CTYPE="en_US.UTF-8" LC_NUMERIC="en_US.UTF-8" LC_TIME="en_US.UTF-8" LC_COLLATE="en_US.UTF-8" LC_MONETARY="en_US.UTF-8" LC_MESSAGES="en_US.UTF-8" LC_PAPER="en_US.UTF-8" LC_NAME="en_US.UTF-8" LC_ADDRESS="en_US.UTF-8" LC_TELEPHONE="en_US.UTF-8" LC_MEASUREMENT="en_US.UTF-8" LC_IDENTIFICATION="en_US.UTF-8" LC_ALL= Finally, I tried $ sudo dpkg-reconfigure tzdata and setting it to "Los_Angeles". Has anyone seen anything like this?

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  • O'Reilly Deal of the day - 10/June/2012 - Introducing HTML5 Game Development

    - by TATWORTH
    Today's deal of the day from O'Reilly at http://shop.oreilly.com/product/0636920022633.do?code=DEAL is Introducing HTML5 Game Development"Making video games is hard work that requires technical skills, a lot of planning, and—most critically—a commitment to completing the project. With this hands-on guide, you’ll learn step-by-step how to create a real 2D game from start to finish. In the process, you’ll use Impact, the JavaScript game framework that works with HTML5’s Canvas element. Not only will you pick up important tips about game design, you’ll also learn how to publish Impact games to the Web, desktop, and mobile—including a method to package your game as a native iOS app. Packed with screen shots and sample code, this book is ideal for game developers of all levels."

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  • Credit Card Payment Processing which APIs do you use?

    - by user3330840
    It's for a Point of Sale Terminal where the customer will bring the physical credit card and it will be swiped through the terminal. The business has a merchant account on some banks. So, how do I start accepting credit cards in my app? The credit cards that needs to be accepted include: visa, master-card, amex, discover. Which APIs do I need to use? The programming language doesn't matter it can be in any programming languages Java/C#/C++/Python or anything. Will there be a single API or multiple APIs that need to be integrated? (I know some about PCI compliance and security encryption)

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  • What things to take into consideration when refactoring code?

    - by JustaPro
    Code refactoring is a "disciplined technique for restructuring an existing body of code, altering its internal structure without changing its external behavior" Could anyone explain this definition? I find it kind of blurry. Which is the best technique to do it? Are these the only ones? Which are the obstacles one would meet when refactoring code? What to take into consideration when switching between IDEs? Do tools which help refactoring exist? If yes, which one would you recommend using? Any references to links where I can find out more on this subject or to books that have been written are welcomed. The questions above are for any programming language, but specific examples are appreciated. Anything that would clarify this for me is.

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  • Is there a well grounded theory on backward and forward compatibility of formats, languages, grammars and vocabularies?

    - by Breton
    I have a friend who has the specific problem of building a case against the use of a custom HTML <wrapper> tag in some site's markup. Now, intuitively we can answer that use of such a tag is risky, as future HTML specs may define a wrapper tag with semantics that conflict with its use on the site. We can also appeal to a particular section of the HTML5 spec which also recommends against the use of custom tags for this reason. And while I agree with the conclusion, I find these arguments a little on the weak side, on their own. Is there some well grounded and proven theory in computer science from which we can derive this conclusion? Have programming language theorists created proofs about the properties of vocabulary versioning, or some such thing?

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  • Perl fête ses 25 ans, que pensez-vous de l'évolution du langage de programmation ?

    Perl fête ses 25 ans que pensez-vous de l'évolution du langage ? Perl (Practical Extraction and Report Language) a un quart de siècle cette semaine. Le langage de programmation dérivé des langages de scripts shell, sed, awk et du langage C avait été lancé en version 1.0 le 18 décembre 1987 par Larry Wall. Le langage avait été présenté comme une alternative aux utilitaires de traitement de texte Unix Sed et Awk. C'est un an plus tard après la sortie de la version 2.0 que Perl va réellement décoller. En 2000, Perl sort en version 6 et est entièrement réécrit à partir de zéro, tout en concevant ses principes de base. Le langage interprété est surtout apprécié...

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  • How to improve workflow between developer and designer with Expression Blend?

    - by Amenti
    We use WPF and Expression Blend 4. I'm trying to improve our workflow by tutoring one of our designers to use it for styling and animation. Slowly but surely I get the impression Blend in itself is to technical for the designer in question. I myself use it only occasionally (it's great for Visual States for instance) because a lot of things are easier done in code or not possible at all in Blend alone. It seems a developer with design experience is a lot more productive with it than a sole designer. Are there any good online resources or advice you could give me how to improve this situation?

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  • Should I continue to learn and program using ansi c or non standard? [closed]

    - by Erik
    I am a Cs Student, enthusiastic about programming. C is my first programming language that I learned. (Never been exposed to programming, data structures, algorithms before) I failed the exam because I studied on my own and didn't know how to use windows non standard libraries like conio.h. (I had to draw circles, etc using get x and get y). I told them but they just don't care. What do I do because for a beginner this is very confusing? Do I continue to study ansi c on my own, or should I study non standard c? Should I do them in parallel? *I did use the search bar but found nothing useful that could help me.

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  • What Languages are mostly understood "intuitively" and could benefit from a more formal learning approach?

    - by keppla
    In a presentation, i stumbled upon the Statement "JavaScript is a Language everybody uses, yet nearly noone seems to find it neccessary to learn how it works". And indeed, not many of the programmers i know could explain javascript's prototype concept, or why functions need to be 'bound' to this. CSS seems to be another example of this behaviour: everyone knows how to put a 'class' to an element, and to write a style .myclass { ... }, but only a few even know of margin-collapse. My question is: are there more of those languages, technologies, concepts, that are so prevalent that we dont even notice them as something worth learning while we use them?

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  • Feasible to send marketing emails as an image?

    - by Anonymous -
    Is it feasible to send marketing emails entirely as images - apart from a link at the top, giving the option for the recipient to view the email online (in their browser) and one at the footer to unsubscribe from our mailing list? Anyone who's coded a html email template before knows how much of a pain it is to end up with the final design that displays 'properly' (rarely does it display the same in all clients) and doesn't break. I understand there's the possibility of people simply ignoring the email altogether should their email clients be set not to automatically download images, but many of our email primarily feature images anyway. Thoughts?

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  • What can i do if i made a bootable usb stick, but it doesn't work properly?

    - by eff
    Currently i have ubuntu 11.10 as an os and i want ubuntu 12.04 lts. I made a bootable usb stick with the program 'startup disk creator'. Everything went well (i choose the language, and then i choose ' install'), the purple screen with the title 'ubuntu' come up, it started loading too. After a time black screen come up with white letters last sentence was something like: panic occured, switching back to text. I tried it several times, the same thing happens. i tried to click on ' trying ubuntu from usb too, but it didn't work either . Please help me!

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  • What are some tasks you might ask a potential ruby developer hire to complete?

    - by opensourcechris
    I would like to start a career path as a developer. As my first Language I chose Ruby to learn. What are some types of coding I might be asked to do as part of an evaluation at a potential employer? For example on my interview... Employer: "So, you think you can be a programer!" Me: "Why yes sir, I believe I would be a fitting addition to your team" Employer: "Well that remains to be seen! To demonstrate your basic knowledge please code insert evaluation project here What would you have me do to demonstrate my skills?

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  • Expression Studio 4 Launch of Blend, SketchFlow, Encoder and More!

    Today Expression Studio 4 (which includes Expression Blend, SketchFlow, Expression Web, Expression Design, Expression Encoder) launched at the Internet Week conference in New York City! There are a ton of new features in these products, some of which we have shown off already in some episodes of Silverlight TV a http://silverlight.tv. You can visit www.microsoft.com/expression to find out more about Expression and you can download a trial. Owners of v3 Expression Studio or Expression Web can upgrade...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Most standard / Best way to keep the same top menu among different web pages?

    - by jsoldi
    What's the standard way to keep the same menu on top among different web pages without having to duplicate it on each page (I don't mean that it doesn't reload like when using frames and only loading the bottom part; I want the menu to scroll with the page when scrolling down, like this, this, this and pretty much every single web page that exists). I found this answer but the guy can't use Php and I can. Plus, I see several people giving different suggestions, but I assume there is a standard since pretty much every single web page in the whole web have a menu on top that stays the same among multiple pages . I'm just a newbie on web design (I can program Php and Html easily but I have no idea about standards and stuff like that since I'm self-taught guy ;)). What I would normally do is to include the menu with php but I'm not sure if this is the "standard".

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  • Do they ask too much on this job?

    - by user58404
    I am looking for web developer job and this job description caught my eyes. I am not sure how much they offer but I was wondering if anyone here meets all of their requirements? To me, that's a lot of knowledge. 2 to 4+ years experience building web sites and applications in a professional environment Strong working knowledge of HTML5 and CSS3 Strong working knowledge of JavaScript, jQuery, AJAX Working knowledge of Ruby on Rails or similar MVC framework Working knowledge of ExpressionEngine, Wordpress or similar CMS Experience administering a LAMP-based server Experience with cross-platform and cross-browser website testing Comfortable working with version control (preferably Git) Proficient with Adobe Photoshop, Illustrator, and Fireworks Comfortable working on a Mac Self-starter with excellent time-management skills with the ability to meet challenging deadlines Ability to work independently with minimal supervision Desire to work on a small team Bonus Skills: Experience deploying to Heroku or similar PaaS provider. Experience developing Facebook applications A strong sense of design Cool open source projects (send us your Github account!) Advanced working knowledge of server administration and website deployment. Java and/or .NET experience

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  • SEO problem for site with 2 domains [closed]

    - by Harry
    Possible Duplicate: What is duplicate content and how can I avoid being penalized for it on my site? I have two domains pointing to the same site. I want both domains to co-exist, they share most of the same content, but they differ in design and they are aimed at different markets / rivaling communities. Is there a way to let google know that these two domains are the same site and don't cause me to get hit with a duplicate content penalty? Any other general SEO tips for this situation would also be welcomed. Thanks. Come on man, why was this closed. The linked page is completely irrelevant for me.

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