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  • Cannot access Windows via grub after new dual-boot Ubuntu install

    - by user287474
    I previously installed Ubuntu on a computer that had Windows XP on it and got it successfully to run alongside it. (access both OS systems) Now I installed Ubuntu again on my MSI notebook with Windows 8.1, and I cannot access the GRUB without hitting escape on startup, and even then, I can no longer open windows. Before all of this, I created a recovery point, file history and saved a back up on a external hard drive incase I did anything wrong. Now how can I revert my computer back to it's state before installation.

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  • way to do if(x > x2) x = x2 with rotation?

    - by CyanPrime
    Alright, so I got this walking code, and some collision detection, now the collision detection returns a Vector3f of the closest point on the triangle that the projected position is at (pos + move), so then I project my position again in the walking method/function and if the projected position's x is the nearest point'x the projected position's x becomes the nearist point's x. same with their z points, but if I'm moving in a different direction from 0 degrees XZ how would I rotate the equation/condition? Here is what I got so far, and it's not working, as I go through walls, and such. Vector3f move = new Vector3f(0,0,0); move.x = (float)-Math.cos(Math.toRadians(yaw)); move.z = (float)-Math.sin(Math.toRadians(yaw)); // System.out.println("slopeNormal.z: " + slopeNormal.z + "move.z: " + move.z); move.normalise(); move.scale(movementSpeed * delta); float horizontaldotproduct = move.x * slopeNormal.x + move.z * slopeNormal.z; move.y = -horizontaldotproduct * slopeNormal.y; Vector3f dest = colCheck(pos, move, model, drawDist, movementSpeed, delta); Vector3f projPos = new Vector3f(pos); Vector3f.add(projPos, move, projPos); if(projPos.x > 0 && dest.x > 0 && projPos.x < dest.x) projPos.x = dest.x; else if(projPos.x < 0 && dest.x < 0 && projPos.x > dest.x) projPos.x = dest.x; if(projPos.z > 0 && dest.z > 0 && projPos.z < dest.z) projPos.z = dest.z; else if(projPos.z < 0 && dest.z < 0 && projPos.z > dest.z) projPos.z = dest.z; pos = new Vector3f(projPos);

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  • Can't Install Packages ubuntu 12.04

    - by Pumpkin
    I'm trying to install software by using apt-get and ubuntu software center UI, when I try the ubuntu software center it gets stuck saying installing and installs nothing and when I try the apt-get it gets stuck at the point "0% [Waiting for headers]" I tried modifying sources.list file. I installed ubuntu this morning. Do you have any suggestions for me ? Thanks in advance for your time. edit : After a while, I get the error 502 bad gateway

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  • Getting know a hardware of your Linux box

    <b>Linuxconfig:</b> "Here is a list of commands which should help you to troubleshoot your hardware and find some information about it. This is not a ultimate troubleshooting guide but certainly will serve as a good starting point."

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  • Is it possible (and practical) to search a string for arbitrary-length repeating patterns?

    - by blz
    I've recently developed a huge interest in cryptography, and I'm exploring some of the weaknesses of ECB-mode block ciphers. A common attack scenario involves encrypted cookies, whose fields can be represented as (relatively) short hex strings. Up until now, I've relied on my eyes to pick out repeating blocks, but this is rather tedious. I'm wondering what kind of algorithms (if any) could help me automate my search for repeating patterns within a string. Can anybody point me in the right direction?

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  • Easy Search Engine Optimisation Advice - DIY SEO

    Search Engine Optimisation (SEO) is the term used to describe the actions a webmaster takes to improve the search engine rankings of their website - simply put, this means moving your website higher in the list in search engines such as Google, when a web user searches for the products/services you offer. This article offers a basic guide to the search engine optimisation process. Although they may help to improve rankings they are by no means all-encompassing, but rather a starting point for your SEO campaign.

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  • What should I use for a package name if I don't have a domain? [closed]

    - by C. Ross
    Possible Duplicate: What is the point of Java’s package naming convention? What package name to choose for a small, open-source Java project? I write Java (and derivative languages with package names) for personal use, but I don't have a personal domain name, so the standard packaging naming convention doesn't hold. Since the same convention is used in Maven group-id's, the problem is the same there. What should I use for the root of my package name?

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  • Using macro to check null values [migrated]

    - by poliron
    My C code contains many functions with pointers to different structs as parameteres which shouldn't be NULL pointers. To make my code more readable, I decided to replace this code: if(arg1==NULL || arg2==NULL || arg3==NULL...) { return SOME_ERROR; } With that macro: NULL_CHECK(arg1,arg2,...) How should I write it, if the number of args is unknown and they can point to different structs?(I work in C99)

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  • Enterprise Portal Development In ASPDOTNET

    You have good business and a website which helps you to grow more. Now you are reaching at a point that you want a business application that helps you and your employees in all ways means you need a ... [Author: Jessica Woodson - Web Design and Development - May 13, 2010]

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  • SEO and Increasing Website Traffic

    In today's modern world, a website is the equivalent of a huge billboard outside your office. It is your advertising window to all your customers and you want people to see it. There is not much point in having an all singing, all dancing website that nobody visits!

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  • Why are there so many minus pont on questions in this forum? [migrated]

    - by BlackLotus
    First, I think I will get minus too here or blocked idk why I want know this so why when I am looking at question list so many minus point on question here so they are asking about programming not other, so this programmers forum or not? and what defferent with stackoverflow ? so many question about programmer there but just little question got minus and i know that must got minus because asking about cyber cryme or other bad but here so many good question got minus why ? thanks for replay,good or not

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  • Pas de BlackBerry 10 pour la tablette PlayBook contrairement aux promesses, BlackBerry affiche des résultats mitigés au premier trimestre 2013

    Pas de BlackBerry 10 pour la tablette PlayBook Contrairement aux promesses, BlackBerry affiche des résultats mitigés au premier trimestreSelon le point de vue, on dira que BlackBerry (ex-RIM) va mieux, ou qu'il va moins mal mais que ce n'est toujours pas cela.En affichant une perte de 84 millions de dollars, l'entreprise canadienne n'a en tout cas pas rassuré les analystes.Les résultats de ce premier trimestre étaient particulièrement attendus puisqu'ils traduisent, pour la première fois de manière concrète, l'accueil fait par le public au nouveau système BlackBerry 10.Problème, le constructeur n'a écoulé que 2.7 millions de Z10, malgré les campagnes de publicité et les opérations de co...

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  • Does SEO Matter?

    Too often companies claim to be Internet Marketers, but fail to deliver. This usually refers to web development and design companies that do nothing more than create pretty websites. While a visually appealing site might be fine, if no one visits it then there is no point, and your marketing dollar has been wasted...

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  • An SEO Tool is Important For Your Search Engine Optimization Efforts

    There will always be a need and a demand for a SEO tool which can provide website owners with the information they need to improve their site's standing in search engine results. After all, gaining visibility to consumers on the web via search engines (which is how 85% of web users find the content they're looking for) is everything, especially if you have an online business or a website which promotes your brick and mortar establishment. Search engine optimization can seem complex - and there's no point in sugar coating it.

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  • Samsung crée F2FS, un nouveau système de fichiers open source pour mémoire Flash qui sera intégré au noyau Linux

    Samsung crée F2FS son nouveau système de fichiers open source pour mémoire flash qui sera intégré au noyau Linux Samsung a mis au point un nouveau système de fichiers destiné aux supports de stockage flash. Les systèmes de fichiers anciens qui sont actuellement utilisés pour le stockage sur les mémoires flash NAND très répandues sur les terminaux mobiles présentent des limites assez importantes. Certains constructeurs de smartphones comme RIM ou encore Sharp ont été obligés de se tourner vers le système de fichiers propriétaire Extended File Allocation Table (exFAT) de Microsoft contre payement de redevances.

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  • I have many domain names and 1 website, how can I improve my SEO strategy?

    - by user114659
    I have some domains with several extensions like .us, .net, .org etc. I want to use them all to redirect to one website, which is a social networking website. I want to use these domains in such a way that these domains become helpful in SEO point of view, this time. So far I am doing the followoing: pointing all domains to one directory on my hosting I have some other options including using 301 redirect, but I don't want to see duplicate contents in Google, What else do I need to do?

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  • Should you promise to deliver a feature that you aren't sure if its implementable?

    - by user476
    In an article from HN, I came across the following advice: Always tell your customer/user "yes", even if you're not sure. 90% of the time, you'll find a way to do it. 10% of the time, you'll go back and apologize. Small price to pay for major personal growth But I've always thought that one should do a feasibility analysis before making any kind of promises to a customer/user, so that they aren't misled at any point. At what circumstances, then, should the above advice applicable?

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  • Reasons NOT to use JSF [closed]

    - by Vain Fellowman
    I am new to StackExchange, but I figured you would be able to help me. We're crating a new Java Enterprise application, replacing an legacy JSP solution. Due to many many changes, the UI and parts of the business logic will completely be rethought and reimplemented. Our first thought was JSF, as it is the standard in Java EE. At first I had a good impression. But now I am trying to implement a functional prototype, and have some really serious concerns about using it. First of all, it creates the worst, most cluttered invalid pseudo-HTML/CSS/JS mix I've ever seen. It violates every single rule I learned in web-development. Furthermore it throws together, what never should be so tightly coupled: Layout, Design, Logic and Communication with the server. I don't see how I would be able to extend this output comfortably, whether styling with CSS, adding UI candy (like configurable hot-keys, drag-and-drop widgets) or whatever. Secondly, it is way too complicated. Its complexity is outstanding. If you ask me, it's a poor abstraction of basic web technologies, crippled and useless in the end. What benefits do I have? None, if you think about. Hundreds of components? I see ten-thousands of HTML/CSS snippets, ten-thousands of JavaScript snippets and thousands of jQuery plug-ins in addition. It solves really many problems - we wouldn't have if we wouldn't use JSF. Or the front-controller pattern at all. And Lastly, I think we will have to start over in, say 2 years. I don't see how I can implement all of our first GUI mock-up (Besides; we have no JSF Expert in our team). Maybe we could hack it together somehow. And then there will be more. I'm sure we could hack our hack. But at some point, we'll be stuck. Due to everything above the service tier is in control of JSF. And we will have to start over. My suggestion would be to implement a REST api, using JAX-RS. Then create a HTML5/Javascript client with client side MVC. (or some flavor of MVC..) By the way; we will need the REST api anyway, as we are developing a partial Android front-end, too. I doubt, that JSF is the best solution nowadays. As the Internet is evolving, I really don't see why we should use this 'rake'. Now, what are pros/cons? How can I emphasize my point to not use JSF? What are strong points to use JSF over my suggestion?

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