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• Are programming languages pretty much "stable" for now?

  - by Sauron

  Recently i have looked at the "timeline" of Programming Languages and while a lot has changed in the past 5-10 years, there are a lot of languages that have pretty much "stayed" the same in their niche/use. For example, let's take C language. We don't really ever see much languages being developed (correct me if i'm wrong) to try to Unseat C. However, there are a lot of languages that try to do similar things (look at all the SQL/No-SQL languages) Scripting Languages, etc... Is there a reason for this trend? Or is it just because C was designed very well ? and there isn't really any need for new once?

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• Find out if there is a local user logged in when logging in over ssh

  - by sebastiangeiger

  I need to run some calculations on a machine that I can only access remotely but also serves as a work station. There are many of them and I want to pick a "free" one. Free means in this case that no one is logged in locally. My first try was the who command, but for some reason it only lists "selected" users and I can't really find out how they are selected. Next try: ps aux | cut -d " " -f1 | sort | uniq: better showing a bunch of demons but also the local user that was not displayed by who. My current solution is to go in and do ps aux | grep "gnome-session" which is better but still gives me a lot of junk. Ideally I am looking for something that I can include in my ssh profile that warns me about (active) local users when I log in.

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• Creating Array of PictureBox controls in C#

  In this article, I try to create Array of PictureBox controls, you can create array of Labels and Buttons as my example.

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• Oracle OpenWorld Update -- Get in the Cloud Now: Building Real Applications with the Java Cloud Service

  - by Ruma Sanyal

  Today we want to highlight a really exciting session focused on what it takes to build a typical application on the Oracle Cloud using the Java Cloud Service. Come to this session to learn the technical ins and outs of building such applications, what services you can use and how you should evaluate the Java Cloud Service for your applications. Whether you are new to the cloud or a veteran of building cloud solutions on other platforms, this will be a dive into the practical issues in the development - tools, build environment, and deployment approaches - that will help you go back home and try the Java Cloud Service out with your applications. This session will include a live demo and a sample application you will be able to try out yourself on the Java Cloud Service. For more information about this and other Cloud Application Foundation sessions, review the Oracle Cloud Application Foundation Focus On document.  Details: Wednesday, Oct 3,  1.15 -- 2.15pm, Marriott Marquis Foothill F  

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• System doesn't boot when ubuntu is installed on an SSD

  - by Caetano Nichnich Nunes

  I've recently discovered Ubuntu and decided to give it a try. I am using a Samsung Series 5 p530u3c-ad1 which comes with a 24gb SSD and a ~500gb HDD, My intention is to set the system files to the ssd and the rest to the HDD. The system works fine if I do a direct install using only the HDD, but if I try using the SSD for the system files the computer doesn't boot-up, I do not know if the SSD is being recognized by the computer, I think so because I could install Ubuntu on it, but it doesn't appear on the boot order or the boot menu. I read some posts and tried using boot-repair which pointed me not to forget to set my system to boot from my SSD, unfortunately I cannot because of the issues mentioned above. Thanks for your time.

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• Ubuntu 14.04 VLC Subtitles - Will not attach (unable to drag/drop or upload while viewing)

  - by TheLizardKing

  I'm new to Ubuntu and a long time user of VLC with the Windows OS. In Windows, I was able to drag and drop the .sfv file onto the playing video and the subtitles would be enabled. In Ubuntu I try to drag and drop the .sfv file and it acts as though the .sfv file is a video and stops the actual video from playing. When I try to attach the .sfv file (view - subtitles - select text subtitles) I'm able to see the .sfv file I'd like to attach/open, although once I click open the file doesn't attach itself to the video. Does anyone know how to help me with this situation? I'm 2 seasons deep into Breaking Bad and attempting to read the body language of the characters during the Spanish parts has gone on way too long. Thank you, Greg

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• Simple rendering produces minor stutter

  - by Ben

  For some reason, this game loop renders the movement of a simple rectangle with no stuttering. double currTime; double prevTime = System.nanoTime() / NANO_TO_SEC; double FPSTIMER = System.nanoTime(); double maxTimeDiff = 100.0 / 1000.0; double delta = 1.0 / 60.0; int processes = 0, frames = 0; while(true){ currTime = System.nanoTime() / NANO_TO_SEC; if(currTime - prevTime > maxTimeDiff) prevTime = currTime; if(currTime >= prevTime){ process(); processes++; prevTime += delta; if(currTime < prevTime){ render(); frames++; } } else{ try{ Thread.sleep((long) (1000 * (prevTime - currTime))); } catch(Exception e){} } if(System.nanoTime() - FPSTIMER > 1000000000.0){ System.out.println("Process: " + (1000 / processes) + "ms FPS: " + (1000 / frames) + "ms"); processes = frames = 0; FPSTIMER += 1000000000.0; } } But for this game loop, I get really minor stuttering where the movement does not look smooth. long prevTime = System.currentTimeMillis(); long prevRenderTime = 0; long currRenderTime = 0; long delta = 0; long msPerTick = 1000 / 60; int frames = 0; int ticks = 0; double FPSTIMER = System.currentTimeMillis(); while (true){ long currTime = System.currentTimeMillis(); delta += (currTime - prevTime) / msPerTick; prevTime = currTime; while (delta >= 1){ ticks++; process(); delta -= 1; } prevRenderTime = System.currentTimeMillis(); render(); frames++; currRenderTime = System.currentTimeMillis(); try{ Thread.sleep((long) ((1000 / FPS) - (currRenderTime - prevRenderTime))); } catch(Exception e){} if(System.currentTimeMillis() - FPSTIMER > 1000.0){ System.out.println("Process: " + (1000.0 / ticks) + "ms FPS: " + (1000.0 / frames) + "ms"); ticks = frames = 0; FPSTIMER += 1000.0; } Is there any critical difference that I'm missing here? The one thing I noticed is that if I uncap the fps for the second game loop, the stuttering goes away. It doesn't make sense to me. Also, the second game loop came from Notch's Minicraft code with just my thread sleeping code added in.

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• Making retro games: Any good known game architectures?

  - by A.Quiroga

  I'm trying to do a remake of Snowbros . I'm doing it using libgdx but at each time i must try to thought how things got done . For example the physics of the jump and collisions . It seams to be time perfect , but i use the deltaTime to try to aproximate the value in game . I think in this case maybe its using some calcs with processor Hz , but i don't know. Then the simple question , is there any resources of how did they programm this games? Or any idea of the simple ideas repeated each game to game in the old style retro games.

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• flashplugin installer works for firefox but not chromium-browser

  - by user829755

  I'm on Ubuntu precise (12.04.5 LTS) and I do have flashplugin-installer installed. When I click on flash videos in chromium-browser I get "An error occurred, please try again later". In firefox they display fine. I opened chrome://plugins to see if the flash plugin is installed and indeed it's not listed. Also http://www.codegeek.net/flash-version.php displays: "You do not have Flash player installed", while with firefox it says: You have Flash player 11.2.202 installed. Following some instructions on some ubuntu page I copied the plugin using sudo cp /usr/lib/flashplugin-installer/libflashplayer.so /usr/lib/chromium-browser/plugins/ and I started chromium using chromium-browser --enable-plugins but this didn't help. chrome://chrome/ says: Version 36.0.1985.125 Ubuntu 12.04 (283153). what else can I try?

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• Java plugin is not working on some sites

  - by Jay

  I have icedtea6-plugin installed on my Ubuntu box. The weird thing is, when I am browsing the internet, certain website are able to use the Java and some websites are not. For instance, I am able to log in to my bank at nordea.dk. They use a Java applet to authenticate the user. But when I try to use keepvid.com, it says "Loading Java Applet". And then after a minute or two it says "Error: Please click here to download Java. If you already have Java, please restart your browser and try again." The thing is I've restarted my computer, closed and opened my browser(chromium) and none of it seems to help. Could someone please point me in the right direction to solve this problem? Thanks.

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• Grub rescue after installing Ubuntu from USB

  - by Victor Suarez

  I have Windows 7 installed in my internal HDD and wanted to try out Ubuntu so I have an USB to put Ubuntu LiveUSB on and installed Ubuntu on a external HDD and everything worked out fine. Now the problem. If I remove the external HDD and try to boot Windows normally it shows the grub rescue screen. The only way to boot into Windows is by having the external HDD attached. Is there any way I can make it so I won't have to have the external HDD attached to be able to boot my Windows 7?

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• Radeon HD5670 hangs after login

  - by pKaresz

  Thanks in advance for your advices. I installed, Ubuntu 12.04 today, on my PC with a Radeon hd5670 graphics card. The first error I encountered, (just like the first time Unity came out - after witch I waited to try Ubuntu again until now) is, that it hanged after login at the desktop wallpaper, with only the mouse cursor. Well actually the first problem was with the live CD, but I managed to install it, using the install now, not the try now. Live CD has the same problem, as after install. So, after installing and getting the error, I searched of course before asking this:) I found this: Ubuntu hangs at purple screen The accepted answer there helped me to get to this. (note, that the below picture is a screen taken from a working desktop, and then erased the parts that don't show on mine.) Note that there is nothing at the top except the brown bar. No shutdown button, no nothing. The system hangs, I can't click on anything, I can only wiggle around with my mouse XD

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• Plays Well With Others - More Thoughts on the Job Search

  - by KKline

  Yes, I'm playing catch-up between my blog and here, since SQLBlog doesn't syndicate content automatically. This was originally posted on the Professional Development area of http://www.sqlpass.org during the summer of 2010 and then reposted on my personal blog, http://KevinEKline.com , on Nov 16, 2010. While searching for a job, the interview is your opportunity to showcase your talents and the strengths that you bring to an organization. But I have a few more random thoughts about conducting your...(read more)

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• "Ubuntu One" Value could not be retrieved. (ValueError: cannot convert float NaN to integer)

  - by SimoneRaso

  When I try to start Ubuntu one (after the registration) I receive the this error. Plus it keeps saying "loading.." I am using Ubuntu 11.10 freshly installed. I've try to reinstall ubuntuone after remove them from "ubuntu software center" and remove all the entri ubuntuone* from synaptic. Only the last slice of the ubuntu one control panel seems responding and display "Value could not be retrieved. (ValueError: cannot convert float NaN to integer)". After I reinstall completely ubuntu and when I retry, receive the same. tank's

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• Ubuntu 14.04 liveusb boot screen graphic errors

  - by user568109

  I am trying to install Ubuntu 14.04 on my Lenovo Y500 laptop. It came preinstalled with Windows 8. I want to install it in a separate partition with a USB drive. I have tried both Unetbootin and universal usb installer. But for some reason the screen after booting is crappy. The screen goes blank after selecting try ubuntu or install. If I try with nomodeset option the screen only displays on a small strip on the top. Which again is split into three. Each seem to be identical. It is not decent enough to begin installation. The graphic card in my laptop is Nvidia GT650M, if it helps. Maybe the problem is related to that. Can anyone help in fixing this error when installing Ubuntu.

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• Grub rescue problem after installing ubuntu

  - by Victor Suarez

  I have windows 7 installed in my internal hdd and wanted to try out Ubuntu so I got a USB to put Ubuntu LiveUSB on and installed Ubuntu on an external HDD and everything worked out fine. Now the problem. If I remove the external hdd and try to boot windows normally it shows the grub rescue screen. The only way to boot into windows is by having the external hdd attached. Is there any way I can make it so I wont have to have the external hdd attached to be able to boot my windows 7?

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• How do you encourage yourself to program?

  - by Goma

  Imagine that you were given a studio or a room in 7-star hotel which is located by the sea, a luxury car and free massage service. All that were given on the condition that you should write your best code every day. You should come with new ideas and try and try again and again.. Will you accept that? Now come back to me please, the question is: what do you do to encourage youself to like programming and to write more of best practices and to come with new ideas? For example, if you were writing code and you get bored, in this case what do you do? Another example is, what do you do when some days are passed and you did not write anything? How do you recover and get back to work with high energy?

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• XNA - Debugging/Testing Individual Sprites and Pixel Collision

  - by kwelch

  I ran through the first training on XNA where you make a shooter game. They did some thing that I would not do and I want to use their starting point to learn more things. I want to try better collision and adding a menu. I saw something online with the sonic physics where they have a frame by frame of sonic moving 1 pixel. See picture below. I am new to development, but I have been programming for years now. What would you guys suggest to try these different things out. How would I simulate a similar frame by frame testing as they do in the above picture? Thanks!

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• Installed fprint, can't login anymore

  - by Otto

  Tried Fprint, was stupid enough not to backup the common-auth file before changing it. Somehow I'm locked out of the system, trying to fingerscan doesn't do any difference. Even when I've done it 5 times and it asks for password, when it asks for password and I write it in and it says that it's the wrong password. I use the same password for root as for my user. Tried to go into Recovery Mode - root - sudo nano /etc/pam.d/common-auth and remove the rows saying that you need the fingerprint to login, but when I try to overwrite, it says the file is read only, even when I try to open it with root. I have a lot of schoolwork files and programs on the system, so I can't afford losing them. Help?

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• How to use DoDirect/Paypal Pro in asp.net?

  - by ptahiliani

  using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using System.Net;using System.IO;using System.Collections;public partial class Default2 : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {    }    protected void Button1_Click(object sender, EventArgs e)    {        //API Credentials (3-token)        string strUsername = "<<enter your sandbox username here>>";        string strPassword = "<<enter your sandbox password here>>";        string strSignature = "<<enter your signature here>>";        string strCredentials = "USER=" + strUsername + "&PWD=" + strPassword + "&SIGNATURE=" + strSignature;        string strNVPSandboxServer = "https://api-3t.sandbox.paypal.com/nvp";        string strAPIVersion = "2.3";        string strNVP = strCredentials + "&METHOD=DoDirectPayment" +        "&CREDITCARDTYPE=" + "Visa" +        "&ACCT=" + "4710496235600346" +        "&EXPDATE=" + "10" + "2017" +        "&CVV2=" + "123" +        "&AMT=" + "12.34" +        "&FIRSTNAME=" + "Demo" +        "&LASTNAME=" + "User" +        "&IPADDRESS=192.168.2.236" +        "&STREET=" + "Lorem-1" +        "&CITY=" + "Lipsum-1" +        "&STATE=" + "Lorem" +        "&COUNTRY=" + "INDIA" +        "&ZIP=" + "302004" +        "&COUNTRYCODE=IN" +        "&PAYMENTACTION=Sale" +        "&VERSION=" + strAPIVersion;        try        {            //Create web request and web response objects, make sure you using the correct server (sandbox/live)            HttpWebRequest wrWebRequest = (HttpWebRequest)WebRequest.Create(strNVPSandboxServer);            wrWebRequest.Method = "POST";            StreamWriter requestWriter = new StreamWriter(wrWebRequest.GetRequestStream());            requestWriter.Write(strNVP);            requestWriter.Close();            // Get the response.            HttpWebResponse hwrWebResponse = (HttpWebResponse)wrWebRequest.GetResponse();            StreamReader responseReader = new StreamReader(wrWebRequest.GetResponse().GetResponseStream());            //and read the response            string responseData = responseReader.ReadToEnd();            responseReader.Close();            string result = Server.UrlDecode(responseData);            string[] arrResult = result.Split('&');            Hashtable htResponse = new Hashtable();            string[] responseItemArray;            foreach (string responseItem in arrResult)            {                responseItemArray = responseItem.Split('=');                htResponse.Add(responseItemArray[0], responseItemArray[1]);            }            string strAck = htResponse["ACK"].ToString();            if (strAck == "Success" || strAck == "SuccessWithWarning")            {                string strAmt = htResponse["AMT"].ToString();                string strCcy = htResponse["CURRENCYCODE"].ToString();                string strTransactionID = htResponse["TRANSACTIONID"].ToString();                //ordersDataSource.InsertParameters["TransactionID"].DefaultValue = strTransactionID;                string strSuccess = "Thank you, your order for: $" + strAmt + " " + strCcy + " has been processed.";                //successLabel.Text = strSuccess;                Response.Write(strSuccess.ToString());            }            else            {                string strErr = "Error: " + htResponse["L_LONGMESSAGE0"].ToString();                string strErrcode = "Error code: " + htResponse["L_ERRORCODE0"].ToString();                //errLabel.Text = strErr;                //errcodeLabel.Text = strErrcode;                Response.Write(strErr.ToString() + "<br/>" + strErrcode.ToString());                return;            }        }        catch (Exception ex)        {            // do something to catch the error, like write to a log file.            Response.Write("error processing");        }    }}

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• How can I backup files on /etc using Deja Dup? [closed]

  - by Chris Good

  Possible Duplicate: How do I open Deja Dup as root? I am using Ubuntu 12.04 LTS. I'm trying to setup Deja Dup to backup the files for several users (/home) and /etc but as it runs as myself, there are many files it cannot read and therefore cannot backup. I want to try running Deja Dup as root as then it should be able to read and backup all files. I've seen some other info about how to set up a particular App to run as root, so I guess I should try that.

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• Viewing the NetBeans Central Registry

  - by Geertjan

  For some fun, create a TopComponent and then add this bit of code, with thanks to Toni Epple: add(new BeanTreeView(), BorderLayout.CENTER); try { myExplorerManager.setRootContext(DataObject.find(FileUtil.getConfigRoot()).getNodeDelegate()); } catch (DataObjectNotFoundException ex) { Exceptions.printStackTrace(ex); } Run the application and you'll see the NetBeans Central Registry a.k.a. System FileSystem) of the application you're running.

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• Unable configure brightness or colors (12.04)

  - by bux

  I've make a fresh install with Ubuntu 12.04. Unfortunatly i've a problem with colors and brightness settings. Before reinstall of Ubuntu, i used Ubuntu 10.10 with same graphic card, and same nvidia drivers. Note: Only nvidia proprietary drivers works for my GeForce 8600 GTS. Exemple: With nvidia-settings: adjust colors, brightness: no effects With xgamma -gamma 0.5 : no effects Try to use f.lux or redshift: no effects I try solutions found on internet like here but no working to. Any idea ?

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• How do I start Nautilus as root?

  - by Pho swan

  I got problem with nautilus in Ubuntu 12.04 LTS when i run command "gksu nautilus /" password ask box appear and I type my super-user password , than password box is disappear and nautilus is not open. . when i try to open nautilus via normal user in command box . "nautilus" the folder is open up. when i try in terminal ... $sudo nautilus I got following error $ sudo nautilus / ** (nautilus:8523): WARNING **: Command line `dbus-launch --autolaunch=2c8ce9b7da2257c2609b749700000007 --binary-syntax --close-stderr' exited with non-zero exit status 1: Autolaunch error: X11 initialization failed.\n Could not parse arguments: Cannot open display: how can i fix this error..

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• Does the D programming language have a future?

  - by user32756

  I stumbled several times over D and really asked myself why it isn't more popular. D is a systems programming language. Its focus is on combining the power and high performance of C and C++ with the programmer productivity of modern languages like Ruby and Python. Special attention is given to the needs of quality assurance, documentation, management, portability and reliability. Do you think it has got a future? I really would like to try it but somehow the thought that I'm the only person on earth programming D discourages me to try it.

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