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• Is it better to use a Database or a data structure for network stack?

  - by poly

  I've built a multi threaded messaging application in C and I'm currently using a MySQL Memory table to save the session ID, but I'm not sure whether this was a good decision or not. It works like this, the application sends a message and saves the source session ID in the MySQL table. When the application gets the success response it will remove the session's ID from the MySQL table, or if it received an error response then it will keep the ID to be retried later. I've built it this way so that I don't need to care about building a data structure by myself, and the Database provides flexibility when it comes to querying it. Do you think this is appropriate or do I need to use something else? Please note that the application is expecting to handle a large number of transactions/sec.

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• can't chmod on external hard disk?

  - by G. He

  I have an USB3.0 external hard disk, partitioned to 3 NTFS partitions. When I plug the hard disk in, the 3 partitions automatically mounted under /media. So far so good. I can read and write to files, or mkdir, etc on these partitions. But I can't do chmod/chown on any of the files/directories on these partitions. The owner:group always myself, and the mode are always 700 for directories and 600 for files. I have another partition on internal harddisk also mounted. That partition works fine. I looked the output of mount command, the only difference between mount options is that there is one extra 'default_permissions' on the external hard disks. Anyway I can set the owner:group and mode on these files and directories.

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• Can Agile/Scrum be used by 1 or 2 developers?

  - by Dillie-O

  Everything I've been reading and researching up to this point describes how Agile/Scrum works great with teams of about 4 to 6 members, maybe even more. In my current shop, we have about 8 developers or so, but given the nature of the volume of projects and the number of departments we support, we never have more than 1 or 2 folks assigned to a given project. Can I still use Agile/Scrum with a team of 1 or 2 developers? I'm working on making the pitch to my manager to start working with this methodology, but I need to be able to explain how to scale things back for a small developer crew, or convince them to make sure we get more members on a given project.

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• variable declaration in javascript [migrated]

  - by ShaggyInjun

  I have been doing something like this for a while and I have never seen any errors. But, unfortunately, I have never been able to explain why this works. The first line creates a variable which points to a function. The second line just adds func2 to func1 separated by a dot and defines a function. If I add a var in front of func1.func2 then I see a compilation error. func1.func2 = function(){}; Error SyntaxError: missing ; before statement var func1.func2 = function(){}; What type was func1 on first line 1 and what did it become on line 2. var func1 = function(){}; func1.func2 = function(){}; Thanks Venkat

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• Need Help with partitions and such Dual Booting 13.10 w/ windows 7

  - by Aymax

  so I've spent the past couple days freaking out about this and looking for answers, and I decided to resort to asking on forums. probably should have before I wasted 2 entire days. so I am trying to DUAL-INSTALL Ubuntu 13.10 with my x64 Windows 7 home premium computer. I have 6 gb of ram, 1TB hard drive, and a 3.3GHZ dual core processer (just in case it matters). I've managed to figure some things out. I've burned the ubuntu files onto a DVD, and I have been able to successfully run it off the disk. I also shrunk my Windows partition by 120Gb and partitioned that for Ubuntu (all using the windows Disk Manager). Problems: When I turn my computer on with the DVD in the tray, the computer cant find windows. it flashes a screen real quick that says something about not being able to find an operating system, and then goes to "grub" and asks what i want to do with Ubuntu. this scares me, because I don't know if that means that I will not be able to boot windows if I install Ubuntu. The Ubuntu 13.10 installer does not detect my Windows operating system. I only have the options to Erase everything on my drive, or "something else." I choose that, which brings me to 3 I don't understand the partition table. I have no idea which drive im selecting to install stuff on, much less which one to select. I tried to tell by the amount of memory partitioned off, but none of the numbers seem to be accurate. Plus, all the names are dev/sda(#). I know Ubuntu knows the name of my partition, because on the sidebars it shows the names of the different drives, including the partition I made; so why don't they use the names? I have no idea what I'm going to be erasing. I've read that I should know which is which by the file system type, but they are all NTFS, including the one I made. my only other option was FAT, none for EXT2 or any of that like people said to do. My main concerns are that of accidentally erasing windows or not being able to access windows. any feasible solution is helpful, weather it helps me with the install or to make Ubuntu see windows. I realize this question has been asked much, but i have found no feasible answers so far. I am relatively new to this, and have never installed an operating system before, so I do not know most of the jargon. please keep it relatively simple, please. I am not a programmer. Thanks.

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• Binding hotkey for toggling wireless card state - System76 Bonp3

  - by user109076

  Recently, my wireless card shut off on my laptop (System76 Bonp3 running Ubuntu 12.04 LTS). Awhile back, my keyboard had a meeting with a cup of coffee, and my F11 key no longer works. The key binding for turning my card back on happens to be Fn + F11, so I cannot turn my wifi on. The only solution I can think of is to somehow change this to be bound to another key. I'm looking for the script that handles this particular hardware switch so I can bind it elsewhere.

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• What is "top new free" on GooglePlay

  - by Lumis

  On Android Market i.e. GooglePlay, there used to be a page with the latest new games. So every game had a chance to get noticed and make its way up especially if it was good. But now I see "top new free" page and no more the latest apps. I don't understand how can be "top new" Anybody knows how this works? If there are no more pages with the very latest uploaded games then the new apps will be barely seen to exist even if they are excellent, and new programmers have very little chance of getting noticed. Any good advice how to promote a new Android app these days?

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• Search for odt files without indexing

  - by josinalvo

  I am looking for: a way to search inside odt files (i.e. search for contents, not name) that does not require any kind of indexing that is graphical and very user-friendly (for a relatively old person, who does not like computers much) I know that it is possible to have 1) and 2): for x in `find . -iname '*odt'`; do odt2txt $x | grep Query; done works well enough, and it's pretty fast. But I wonder if there is already a good solution that does this with a GUI (or can be adapted to do this easily)

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• UEFI hardware and dual booting with windows

  - by user39803

  I've been struggling for 3 days trying to dual boot Ubuntu 11.10 and Windows 7. I want to use an SSD for my Ubuntu installation and an hdd for Windows. I realized that I have to install windows first and then ubuntu, and so I did that. When I first install windows it boots fine from my hdd, but when I add ubuntu on my ssd and restart, I get a black screen with a blinking cursor. I've read many forums where this is asked but haven't found a single solution that works. I've tried boot repair. It told me to make a fat ESP partition and I did that as well but it still doesn't work. I'm a noob and any suggestions would be really appreciated.

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• Is there a legit reason as to why Outlook.com premium UI is "not available" in Linux Chrome?

  - by vgaldikas

  Well if you use outlook OWA in Chrome on Ubuntu (or any Linux distro), you will get a stripped down version of it basically. You can get around it by faking your user agent, to appear that you are using FireFox. So my question is.. Is there some legitimate reason Microsoft does that, or are they just being a****s??? I mean once you have the user agent faked, it works perfectly. PS. Just in case anyone else need to use outlook, here is the command to start it with fake useragent: /opt/google/chrome/google-chrome --user-agent="Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/534.4 (KHTML, like Gecko) Chrome/6.0.481.0 Safari/534.4"

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• LXDE will not suspend when laptop lid is closed, and will die when woken up

  - by user46061

  I am not an experienced Linux user, although I have been using Ubuntu occassionally some time already. ( Since Feisty Fawn probably? ). Now I installed Ubuntu 11.10 and it is nice ( well, after I installed LXDE, Unity sucks and I didn't really like gnome-fallback-session ), but it has one problem: After being suspended, when I wake my computer up, it starts up and in about 5 seconds it dies. Like a normal shutdown. Then, when I start it again, the screen stays blank, so I have to hard-turn it off - only then, when I turn it on, it works. It is an MSI laptop, about 3-4 years old. The second problem is: After installing LXDE, when I close the laptop lid, it does not suspend. I can only suspend using the shutdown menu - and the waking up problem remains. Many thanks for your time and advice guys.

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• Nvidia GTS 450 HDMI problem?

  - by Gercke

  Good afternoon friends. I have a problem with my video card, I have a video card GeForce GTS 450 and a TV Samsung Series 4 43 "and I have it connected to my video card via a cable Mini HDMI to the TV and everything works perfectly, I can instarlar Ubuntu 12.04 (64bits) perfectly, but the problem when I want to change the screen resolution but try to change the driver I install that comes directly from the Nvidia page gave me an error at the end. maximum resolution I presents is 1024x 768 and is supposed to introduce more resolutions and that is connected to the HDMI. A someone else has happened???? Will have some sort of solution???? I hope someone can help me and I thank you very much. Regards

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• Can't restart from Ubuntu 12.10

  - by Sankalp Kota

  I am dual-booting Ubuntu 12.10 and Windows 8 Pro. Both run seamlessly but I've had the persistent issue of not being able to restart my machine properly from Ubuntu. If I am on Ubuntu and hit the 'Restart..' option, the screen turns off and Ubuntu shuts down, but the computer never turns off and grub bootloader never shows on the screen. However, rebooting from Windows gets me to the bootloader as it should. Turning off the machine completely with 'Shut down' works fine with both Ubuntu and Windows as well. This issue was present even when I was dual booting Ubuntu 12.04 and Windows 7 Starter as well. My computer is an Acer AOD257 with 2 GB RAM, Intel Atom N570 Processor. Any help would be greatly appreciated!

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• Garbage Collection Basics

  - by mikew_co

  Java Is an awesome programming language and platform. One of its better features is automatic garbage collection. Ever wondered how that works? I have written an online web course outlining the basics. Much of what is included has been published before in various white papers and such. However, this is updated for JDK 7 and includes some nice illustrations of the steps involved. Hope you like it. Garbage Collection Basics. A follow-on web course on the G1 garbage collector should follow in a week or so.

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• What are some advantages / disadvantages to working on a remote development machine?

  - by robertpateii

  At home I have a fast rig with my dev environment running in virtual box. that works great, but at work I have a so-so laptop that can barely push visual studio express, outlook, and a dozen chrome windows at the same time. So I can either ask for a dedicated desktop to do development on, or I can ask for a slice on an existing server from IT and remote into it. Setup-wise, the remote option is faster and cheaper. But I don't know its affect on production in the long term. I've done small amounts of work through a remote connection, but never extended development. Do you have experience with this? What are some of the ads/disads to it? Did it make you less productive?

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• 12.04 LTS usb wont boot

  - by Niva

  I've tried to install ubuntu 12.04 LTS parallel with Windows 8, on my laptop Clevo m767yu But when I try to boot from USB it just stops when it's trying to read the files. it stops and shows this picture: https://www.dropbox.com/s/np3ptvvmasv7ax2/IMAG0097.jpg If I try to boot from a cd, it stops and shows a cursor blinking. I've tried both usb and cd on other computers, and the both works. I've a little experience with Ubuntu, but I have never had problems with the installing process. Any help will be appreciated!

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• Can't load Wordpress static files on home network

  - by Tosho

  I've just installed Wordpress 3.5 on my laptop (LAMP on Ubuntu 12.10) and when I'm trying to access the site from my phone but it doesn't load static files (css and images). I tried with Opera Mobile Emulator on my laptop and it works perfectly. I also have another Drupal site on my localhost which I can load from my phone without any issues. Both directories have chmod 777 permissions. What can cause that? Just tried to open the site from my sister's laptop but it except static file I can't access any post or page.

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• How do I stop Sound from Speakers when Headphones are plugged in?

  - by Masteroflifee

  I just installed Ubuntu 11.10 on my hp pavilion dv6 everything works except the sound. The sound comes from headphones and speakers. I use a normal jack-stick headphone. I want the sound to come only from headphones when my headphone is attached. My ID codec: IDT 92HD75B3X5 Again all what i want is: The sound should not come from the speakers when my headphone is attached :D. I read this question but it didn't answer my problem: Sound comes out of my speakers even when headphones are plugged in I am totally new to Ubuntu so please give step by step instructions.

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• How come ASUS sells Ubuntu installed 1225Cs, when we dont have drivers for gma3600?

  - by sumit_gt

  I recently purchased a ASUS 1225C cedar trail netbook. It didn't come preinstalled with Ubuntu like it comes in some markets. I installed Ubuntu 12.04 LTS on it. While Ubuntu works just fine, I am bothered by the lack of proper graphics support because of intel gma 3600. I am aware that this is not a problem of Ubuntu. My question is this: How does ASUS manage to sell these netbooks in other markets with Ubuntu preinstalled? How does ASUS manage to get everything to work? And if they can, why aren't I able to do the same? link: For more on Asus 1225C As you can see, they show Ubuntu working perfectly in the screenshots. Is this false advertising?

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• An Annotated Line of Business Application

  The Silverlight HyperVideo Player  has met with strong support and interest. This mini-tutorial is the first in a series that will walk through the design and delivery of this project. This series will pretend that the design existed before we began coding, and will not take you through its evolution over the months between December 2009 and March 2010. In short, this series is a drop-line exercise highlighting how the program works with a focus on teasing out general principles of creating...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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• Mobile Game Engine

  - by Jason Crosby

  I am trying to track down a game engine for developing mobile games for ios and android. I have been looking for weeks now and havent found what i am looking for. I like jmonkey engine for making desktop games. Its easy to use and it comes with everything you need. Its more that just some libraries. I'm looking for something similar for developing mobile games. I'd like it to be easy to use and have everything included not just a collection of libraries. And I would prefer to write in c++. I'm not looking for "the best". I'm just looking for some engines that match my criteria so I can try them out and see which one works best for me.

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• Employer admits that its developers are underpaid and undervalued. Time to part ways?

  - by Psionic

  My employer recently posted an opening for a C# Developer with 3-5 years of experience. The requirements and expectations for the position were fair, up until the criteria for salary determination. It was stated clearly that compensation would depend ONLY on experience with C#, and that years of programming experience with other languages & frameworks would be considered irrelevant and not factored in. I brought up my concern with HR that good candidates would see this as a red flag and steer away. I attempted to explain that software development is about much more than specific languages, and that paying someone for their experience in a single language is a very shortsighted approach to hiring good developers (I'm telling this to the HR dept of a software company). The response: "We are tired of wasting time interviewing developers who expect 'big salaries' because they have lots of additional programming experience in languages other than what we require." The #1 issue here is that 'big salaries' = Market Rate. After some serious discussion, they essentially admitted that nobody at the company is paid near market rate for their skills, and there's nothing that can be done about it. The C-suite has the mentality that employees should only be paid for skills proven over years under their watch. Entry-level developers are picked up for less than $38K and may reach 50K after 3 years, which I'm assuming is around what they plan on offering candidates for the C# position. Another interesting discovery (not as relevant) - people 'promoted' to higher responsibilities do not get raises. The 'promotion' is considered an adjustment of the individuals' roles to better suit their 'strengths', which is what they're already being paid for. After hearing these hard truths straight from HR, I would assume that most people who are looking out for themselves would quickly begin searching for a new employer that has a better idea of what they're doing in the industry (this company fails in many other ways, but I don't want to write a book). Here is my dilemma however: This is the first official software development position I've held, for barely 1 year now. My previous position of 3 years was with a very small company where I performed many duties, among them software development (not in my official job description, but I tried very hard to make it so). I've identified local openings that I'm currently qualified for, most paying at least 50% more than I'm getting now. Question is, is it too soon for a jump? I am getting valuable experience in my current position, with no shortage of exciting projects. The work environment is very comfortable, and I'm told by many that I'm in the spotlight of the C-level guys for the stuff that I've been able to accomplish during my short time (for what that's worth). However, there is a clear opportunity cost to staying, knowing now with certainty that I will have to wait 3-5 years only to be capped at what I could potentially be earning elsewhere this year. I am also aware that 'job hopper' is a dangerous label to have, regardless of the reasons.

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• Do I really need to remove special characters in a URL?

  - by anarchoi

  I have an FTP account shared with friends where we upload underground music albums and then we use the links to share the downloads in a music forum. The problem is that the album names are in french so there is a lot of special characters in the name. So the URL looks like http://www.mydomain.com/downloads/Some Band - En français avec des caractères spéciaux (2013) [7'' EP].zip For me it works perfectly and I can download the file by using this URL, but I have read everywhere that special chars are bad in URL. Is there any reason why I must remove the special characters or encode the URL? Is everyone able to access a URL with special characters or will some older browsers not be able to download the files? I really don't care about SEO or anything else. I just want the download links to work for everyone. Since the files are uploaded through FTP, I can't use PHP to remove the special characters with a regex, so I really don't know what to do.

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• DRIconf in Ubuntu 64x plus ATI GPU or something more?

  - by Balask

  I've been trying to get Call of Duty 2 to work in Wine in Ubuntu. It gives me a black screen. So I tried the fix suggested by the wine apphq and downloaded DRIconf. Funny thing is that it can't find my direct rendering device. "Could not detect any configurable direct-rendering capable devices. DRIconf will be started in expert mode" When I enter into it in Expert Mode is just errors out anyway. fglrxinfo gives me: display: :0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: ATI Mobility Radeon HD 4200 Series OpenGL version string: 3.3.11627 Compatibility Profile Context That shows me my driver is installed correctl,y right? World of Goo which is Linux native and requires direct rendering works like a charm. So I'm wondering, is there some other workaround? Is there a bigger issue? Does me running 64-bit affect it at all?

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• Is it better to use preprocessor directive or if(constant) statement?

  - by MByD

  Let's say we have a codebase that is used for many different costumer, and we have some code in it that relevant only for costumers of type X. Is it better to use preprocessor directives to include this code only in costumer of type X, or to use if statement, to be more clear: // some code #if TYPE_X_COSTUMER = 1 // do some things #endif // rest of the code or if(TYPE_X_COSTUMER) { // do some things } The arguments I can think about are: Preprocessor directive results in smaller code footprint and less branches (on non-optimizing compilers) If statements results with code that always compiles, e.g. if someone will make a mistake that will harm the irrelevant code for the project he works on, the error will still appear, and he will not corrupt the code base. Otherwise he will not be aware of the corruption. I was always been told to prefer the usage of the processor over the usage of the preprocessor (If this is an argument at all...) What is preferable - when talking about a code base for many different costumers?

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