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  • Build a Water Rocket for Cheap Summer Fun

    - by Jason Fitzpatrick
    If you’re looking for a cheap thrill this summer (and an easy way to sneak some covert summer school lessons about physics into the mix), this fun DIY project turns soda bottles into rockets. Over at Geek Dad they share a roundup of information about building soda bottle rockets including plans, information about the physics behind the rockets, and more. Rather than link to one specific plan, we’d suggest hitting up the roundup at the link below and picking your favorite. Soda Bottle Water Rockets for Summer Fun [Geek Dad] How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me?

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  • SharpDOM, view engine for ASP.NET MVC

    Hi everyone! There is a new view engine for ASP.NET MVC platform, SharpDOM, http://sharpdom.codeplex.com. It's targeting hard coders who appreciate code-first approach a lot. This view engine combines pure HTML layout and the view logic in rather consistent manner, so that HTML layout still looks like HTML layout but it is C# code now :-) If you are interested, please, navigate to SharpDOM project on CodePlex site for more details - http://sharpdom.codeplex.com. Thanks!...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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  • How can the maximum number of simultaneous users to log in to Ubuntu server be increased?

    - by nixnotwin
    I use ubuntu server 10.04 on a fairly good machine, with 2.40 duel-core processor and 2GB RAM. My users login with ssh or samba. I have setup LDAP with PAM to sync user accounts between unix and samba. When I allowed about 90 users to login over ssh at once the server refused login for many users. I am using dropbear as ssh server. Even samba logins failed for many users. I need to allow at least 100 users to login at once. Is there anyway to do this?

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  • What are good JS libraries for game dev?

    - by acidzombie24
    If I decide to write a simple game both text and graphical (2d) what libraries would I use? (Assume we are using a HTML5 compatible browser) The main things I can think of Rendering text on screen Animating sprites (using images/css) Input (capturing the arrow keys and getting relative mouse positions) Perhaps some preloading resource or dynamically loading resources and choosing order Sound (but I am unsure how important this will be to me at first). Perhaps with mixing and chaining sounds or looping forever until stop. Networking (low priority) to connect a user to another or to continuously GET data without multiple request (I know this exist but I don't know how easy it is to setup or use. But this isn't important to me. Its for the question).

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  • Session Mania: Content Catalog & Suggest-a-Session

    - by Justin Kestelyn
    As ably reported in the Oracle Technology Network blog, the Oracle Develop Conference's content catalog is now public (as are the catalogs for JavaOne and Oracle OpenWorld), meaning you can now explore technical sessions scheduled for the conf to your heart's content."But something's missing", you may tell yourself. "Where is my favorite subject, the one I happen to also be an expert on?" Well, there's good news for you, too: The Suggest-A-Session project has returned. It works thus: Submit a session idea via Oracle Mix and ask your colleagues, Oracle Mix community, friends and anyone else you know to vote for your session. (You must be an Oracle Mix member to vote.) Voting is open through June 20. For the most part, the top voted sessions will be selected for the Oracle Develop Conf (or Oracle OpenWorld) official agenda. See the FAQ for fine print.Apparently some people have already jumped into this loophole, including Oracle ACE Director Marco Gralike, who has "gone video" on us: Why wait? Suggest-a-session!

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  • Bug Tracking Etiquette - Necromancy or Duplicate?

    - by Shauna
    I came across a really old (2+ years) feature request issue in a bug tracker for an open source project that was marked as "resolved (won't fix)" due to the lack of tools required to make the requested enhancement. In the time elapsed since that determination was made, new tools have been developed that would allow it to be resolved, and I'd like to bring that to the attention of the community for that application. However, I'm not sure as to what the generally accepted etiquette is for bug tracking in cases like this. Obviously, if the system explicitly states to not duplicate and will actively mark new items as duplicates (much in the way the SE sites do), then the answer would be to follow what the system says. But what about when the system doesn't explicitly say that, or a new user can't easily find a place that says with the system's preference is? Is it generally considered better to err on the side of duplication or necromancy? Does this differ depending on whether it's a bug or a feature request?

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  • tor browser install ubuntu 14.04

    - by hiyaimlisa
    I have read the answers to other questions regarding the install/running of the tor browser. I have tried the answers given but still cannot get the tor browser to run on mine. I have ubuntu 14.04 and where it shows to start tor browser when I double click all I get is an open tab full of code. Anyone with suggestions I should try? I also tried downloading from tor project did not work and tried the install using command in the terminal and it also did not work. When I had windows I had no problem with the install or the tor browser running. I really like ubuntu better this is the only thing that I am having trouble with. PLEASE HELP!!!

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  • SEI Turns Software Architecture into a Game

    - by Bob Rhubart-Oracle
    "Architecture is the decisions that you wish you could get right early in a project." -- Ralph E. Johnson Unless you can see into the future, getting those decisions right comes down to a collection of hard choices. But the Software Engineering Institute (SEI) of Carnegie Mellon University has turned those hard choices into a game. Literally. According to the SEI website: The Hard Choices game is a simulation of the software development cycle meant to communicate the concepts of uncertainty, risk, options, and technical debt. In the quest to become market leader, players race to release a quality product to the marketplace. By the end of the game, everyone has experienced the implications of investing effort to gain an advantage or of paying a price to take shortcuts, as they employ design strategies in the face of uncertainty.   Check it out for yourself: Download the Hard Choices Board Game Download the companion white paper: The Hard Choices Game Explained

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  • Design Patterns and their most common uses for them [closed]

    - by cable729
    Possible Duplicate: What are some programming design patterns that are useful in game development? As I'm returning to game dev, I've realized that I've lost a lot of the knowledge I had before. So now I'm looking at design patterns that I can use for my next project. One design pattern that I've seen a lot is the 'composition method,' which uses actors and components. Is that the right name for it? I'd like to look more at this and see what the advantages/pitfalls are. So what design patterns are out there, and what are the advantages/disadvantages to them?

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  • better way to track defect sources in tfs

    - by deostroll
    What is the best way to track defect sources in tfs? We have various teams for a project like the vulnerability team, the customer, pre-sales, etc. We give a build and these teams independently test it. They do not have access to our tfs system. So they usually send in their defects via email. It will usually be send in an excel format. Our testing team takes these up and logs them into tfs. Sometimes they modify the original defect description (in excel) and add the expected/actual results. Sometimes they miss to cite the source. I am talking about managing the various sources as such. Is there a way we can add these sources into tfs, and actually link this particular source with the defects, with individual comments associated with them (saying where in the source we can find the actual material for the defect).

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  • Unable to Connect MTS Mblaze modem in Ubuntu 12.10?

    - by CracLock
    I am using Ubuntu for 1st time and i do have an modem MTS Mblaze in India which i am using in Windows. But when i tried to connect in Ubuntu 12.10 using give default method i.e. choose country, modem type, connection, add details and then connect. But its not working. Then i came over another solution at http://www.e-dirts.com/2012/how-to-setup-mts-mblaze-usb-modem-in-ubuntu-gnulinux/ But no installation of CrossPlatformUI-V2.1.2-SSTL-ALL-ubuntu.deb happens at all. Is it because i'm using 12.10 version while its tested using 12.04 version. And does that another 'Advanced user method' can be followed without internet? Please suggest. Help

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  • I want a trivial example of where MongoDB can scale but a relational database will have trouble

    - by Ryan Weir
    I'm just learning to use MongoDB, and when discussing with other programmers would like a quick example of why NoSQL can be a good choice compared to a traditional RDBMS - however the scenarios I come up with and can find online seem pretty contrived. E.g. a blog with lots of traffic could be represented relationally, but will require some performance tuning and joins across tables (assuming full denormalization is being used). Whereas MongoDB would allow direct retrieval from one collection to the same effect. But the response I'm getting from other programmers is "why not just keep it relational and then add some trivial caching later?" Does anybody have a less contrived example where MongoDB will really shine and a relational db will fall over much quicker? The smaller the project/system the better, because it leaves less room for disagreement. Something along the lines of the complexity of the blog example would be really useful. Thanks.

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  • The next step for a graduate?

    - by Michael Hobbs
    I will complete my degree in Computer Science in July of 2013 however I will have two years of military service left. I would like to get some hands on C#/C++ programming experience in the mean time. I have been looking around the web at all the open source project that are out there. There are literally 10's of thousands. How would you go about picking one that is: A) good for a graduate level programmer B) will probably go somewhere, and C) are willing to take a novice under their wing. I would even be happy to work for a company for free, remotely as a debugger, tester, or what have you. As a side note would prefer to stick in the C# realm but understand I need to branch out at the same time.

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  • When attempting to install ubuntu 12.04 from CD, I am stuck on black streen with "loading bootlogo..."

    - by Jessica K
    I downloaded Ubuntu 12.04 to my desktop and burned to a CD using Infra Recorder and instructions on ubuntu website. Restarted PC to boot from CD receive black screen with "Loading bootlogo..." then nothing happens and I have to restart with windows. The CD seems to be correct. Folders include .disk, boot, casper, dists, install, isolinux, pics, pool, preseed, autorun file, md5sum text file, readme.diskdefines file, wubi app. System Information Operating System: Windows Vista™ Home Premium (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.120824-0336) System Manufacturer: TOSHIBA System Model: Satellite L305 BIOS: Default System BIOS Processor: Intel(R) Pentium(R) Dual CPU T2390 @ 1.86GHz (2 CPUs), ~1.9GHz Memory: 3062MB RAM Page File: 1553MB used, 4772MB available Windows Dir: C:\Windows DirectX Version: DirectX 11 DX Setup Parameters: Not found DxDiag Version: 7.00.6002.18107 32bit Unicode Drive: D: Model: PIONEER DVD-RW DVRKD08L ATA Device Driver: c:\windows\system32\drivers\cdrom.sys, 6.00.6002.18005 (English), 4/11/2009 00:39:17, 67072 bytes

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  • Links shortener with advanced reporting?

    - by Qualcuno
    I am serching for a script (preferably in PHP) or an external solution which lets me create an "url shortener" with advanced reports. We have been using Google Short Links for a while: it works really well, but it lacks reporting (it only displays a counter with the total number of redirects). Our setup is as follows: "go.mydomain.com" points to the web service, and we can create links such as "go.mydomain.com/product1". What I'm looking for is a similar service (or self-hosted solution) but with advanced reports, so we can track redirects by day, month, etc, distinguish between mobile and desktop users (very important!) and so on.

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  • Gotcha | Installing .net 4.0 and IIS 6

    - by Steve Clements
    Just a quick one, seems pretty weird to me. I installed .net 4.0 on an old IIS6 box, ready to deploy a asp.net mvc app targeting .net 4.0.  I thought, which to me seems logical, that I install .net 4.0, setup a new web site, new app pool, set the web site to asp.net 4.0 (other configuration also needed to run MVC on IIS6 here and here) and it would just work. Errr… No.  The page cannot be displayed!  Nothing to do with MVC. Apparently just because you have installed .net 4 and the option is available in IIS, it’s not enabled.  I’m not going to repeat anything here…take a look at this post – clear, easy steps on exactly what you need to do and how to check if this is the problem. http://johan.driessen.se/archive/2010/04/13/getting-an-asp.net-4-application-to-work-on-iis6.aspx

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  • How do I disable changing proxy settings?

    - by gap
    I've got several machines, running 14.04.1, for kids to access. Each machine has accounts for each kid, as well accounts for several adults. Although I've set a system wide proxy use policy, it doesn't get used by Chrome. Instead, I had to log into each kids account and set a proxy use policy, pointing to tinyproxy/dansguardian, for safe internet access. The problem is that, should the kids get an ounce of computer savvy, they'll figure out that they can launch the proxy settings config panel from Unity, then change the proxy settings to None, and completely bypass the "safe" internet scheme I've setup. Can anyone tell me how I can disable those user accounts from being able to modify their proxy settings (not the "system wide" ones... those arent used.. this is the per-user settings). Thanks

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  • How do I customize Alt+Tab behaviour?

    - by David Oneill
    GOAL: I would like to make the little menu that pops up when I press Alt+Tab to gain the ability to jump to a particular window by pointing my mouse at one of the icons. This is the behaviour that my Mac OSX laptop has. The Situation I use Xfce, with the default windows manager (XFwm). I currently have Ubuntu 10.04 and 11.10, although I plan on updating both to XUbuntu 12.04 once the dust settles (probably mid-may?). (Clarification, for my current setup, I installed Ubuntu, then added xfce manually after the fact). So, a series of related questions. How do I set this up? (If this is not possible, please answer the following questions to help me learn) Is the Alt+Tab a function of the desktop environment, or the windows manager, or some other piece? (IE if I switch to using some other tool, could I potentially get this) Are there any customizations that are available either from settings or add-on applications that would allow me to change the behaviour of that menu?

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  • Unity3D problem. Bullets fall down instead of flying like they should

    - by user2342080
    I used this tutorial as a reference. http://www.youtube.com/watch?v=3L8eaoyZ0Go My problem is that whenever I play the game, EVERYTHING works but the bullets. It just falls down instead of flying forward. This is the flash version of the game: http://v1k.me/swf/ Can some one help me out? Should I upload the project? This is my "Shoot.js": public var bulletPrefab : Transform; public var bulletSpeed : float = 20; function Update() { if(Input.GetMouseButton(0)) { if(bulletPrefab || bulletSpeed) { var bulletCreate = Instantiate(bulletPrefab, GameObject.Find("SpawnPoint").transform.position, Quaternion.identity); bulletCreate.rigidbody.AddForce(transform.forward * bulletSpeed); } } }

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  • The How-To Geek Guide to Audio Editing: Cutting, Trimming & Arranging

    - by YatriTrivedi
    Audacity novices often start with lofty project ideas, but sometimes they lack the basics. Knowing how to cut and trim tracks is basic audio editing and is a fundamental starting point for making more elaborate arrangements. For this exercise, I’ll be making a ringtone from a Castlevania: Symphony of the Night track. I have the original CD and used that so I started with better quality audio than an MP3. You can follow along with any file you like, just so you get a feel for cutting, trimming, and arranging sound clips for yourself. I know which parts I want to edit in the track, but a quick play-through will help me look for those areas visually. How to Enable Google Chrome’s Secret Gold IconHTG Explains: What’s the Difference Between the Windows 7 HomeGroups and XP-style Networking?Internet Explorer 9 Released: Here’s What You Need To Know

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  • Screen Brightness not adjustable for Acer Aspire S3

    - by Kakadu90
    First of all, thank you very much for providing this useful forum. Too bad for me, there is no support for the Acer Aspire S3 yet (just came out in October) Short Description of the Problem: I cannot adjust the screen brightness. Neither Compiz nor the FN Key combination work. Also the fan keeps running on full power. As you can guess, both of these drain my battery. The Setup: Acer Aspire S3, Intel i5 newest Generation, Intel HD3000 Grafic Accelerator (no driver maybe?) Thanks in advance, Kakadu90

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  • How many questions is it appropriate to ask as an intern?

    - by Casey Patton
    So, I just started an internship, and I'm worried that I'm asking too many questions. My mentor assigns me projects and helps me learn all the company's technologies and methodologies. However, there's so much new material for me to learn while doing this project that I have a lot of questions. I generally ask questions over instant messages or E-mail (those are the primary modes of communication for my company). I'm trying to be careful not to ask too many questions: I don't want to come off as annoying or dumb. How many questions are appropriate to ask? Once an hour? More? Less? Keep in mind, my mentor is also a fellow programmer who has his own responsibilities.

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  • how to access samba shares via nat?

    - by HSM
    I have setup a virtual machine in Virtual Box and installed a Samba Server. I changed the guest operating system's NIC from Bridged to NAT for a reason that I can't remember. I then added a additional NIC in "host only adapter" mode. The Windows host OS now can access the Ubuntu 10.10 virtual server via the Host Only NIC. However, I can not access the Samba server running on the Ubuntu guest OS. I am not sure what to do now. How can I get the widows Host OS to access the Guest OS' samba server.

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  • How can I create a zip archive of a whole directory via terminal without hidden files?

    - by moose
    I have a project with lots of hidden folders / files in it. I want to create a zip-archive of it, but in the archive shouldn't be any hidden folders / files. If files in a hidden folder are not hidden, they should also not be included. I know that I can create a zip archive of a directory like this: zip -r zipfile.zip directory I also know that I can exclude files with the -x option, so I thought this might work: zip -r zipfile.zip directory -x .* It didn't work. All hidden directories were still in the zip-file.

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  • Resources for Virtual Machine programming

    - by good_computer
    I am a beginner (a little more than that) programmer of C. I am really interested in the field of Virtual Machines. When I read about the Python VM, the PyPy project, the advancements in JVM technology, Google V8, the Erlang VM, I really get excited about these amazing pieces of technology, and really want to get my hands dirty building them or contributing to one of these projects. I need to know.. what are the things (language, concepts, algorithms, math, etc?) I need to know/learn to be able to build a virtual machine any books or other resources that will be helpful career prospects for a virtual machine engineer (but this is least important for me for now) (one more side question: somewhere I'd read something like JVM is on the cutting edge of virtual machine technology -- that it is the most advanced VM so far -- is that true?) Please give me a LONG answer detailing all that you know.

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