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• Is Ubuntu workable as a laptop for an IT consultant?

  - by Eric Wilson

  I work as a consultant programmer, typically in large businesses. I use a Windows Laptop, and many of my colleagues use a Mac. My personal preference would be to run Ubuntu if I could have complete control over my development environment. But I will have occasional need for Microsoft specific products, especially IE. My colleagues that use a Mac often run Windows on a virtual machine for these situations. My question is: Is Ubuntu a workable solution for the laptop of an enterprise programmer? For example, is it as easy to run Windows on a VM on Ubuntu as it is on a Mac? Has anyone out there tried this? Is there any particular reason why Ubuntu would not serve as well as a Mac for development in this environment? Note that I am not doing .NET development, so I am typically dealing with Java that is going to be run on an Apache server and used by clients running Windows.

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• How to change Ubuntu Studio from XFCE to Gnome?

  - by Starx

  I have 12.04 Ubuntu Studio Installed at the moment. On removing a application called Terminal Emulator, I accidentally removed xfce too. As I am not very fond of xfce, I am OK with it as I can change the session to gnome 3 upon login. But session runs with occasional glitches. My question is how to remove xfce completely and turn it into pure gnome system. I am aware of the way to do apt-get install ubuntu-desktop But, this is going to change the ubuntu studio, I dont want that. I just want to change my ubuntu studio to pure gnome without uninstalling ubuntu-desktop. i.e. Something like ubuntustudio-12.04-gnome build. I've looked at this Q&A: How to remove xubuntu? The accepted answer removes some vital software from Ubuntu Studio such as Gimp, including ubuntustudio-desktop at the end.

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• Does TOR protect privacy of bittorrent clients like Transmission?

  - by rocky

  I am using the Tor bundle and its included browser to initiate torrent downloads with the Transmission client included with Lubuntu. Clicking on a torrent link provides a warning message that external apps are NOT protected by Tor and clicking ok results in normal Transmission start and it begins the download. I have seen assertions in another post answer that Tor starts Transmission using a different profile than the normal $HOME/.config/transmission. However, I see no evidence of the referenced different profile on my system ( $HOME/tor-browser_en-US/.config/transmission). The normal privacy settings provided within Transmission seem inadequate for privacy according to what I have read. Has something changed in how Tor bundle browser (firefox) interacts with supporting apps like Transmission. Tor bundle otherwise seems to be operating correctly. I asked the question in the post but it was deleted by moderator for some reason not given

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• How to copy depth buffer to CPU memory in DirectX?

  - by Ashwin

  I have code in OpenGL that uses glReadPixels to copy the depth buffer to a CPU memory buffer: glReadPixels(0, 0, w, h, GL_DEPTH_COMPONENT, GL_FLOAT, dbuf); How do I achieve the same in DirectX? I have looked at a similar question which gives the solution to copy the RGB buffer. I've tried to write similar code to copy the depth buffer: IDirect3DSurface9* d3dSurface; d3dDevice->GetDepthStencilSurface(&d3dSurface); D3DSURFACE_DESC d3dSurfaceDesc; d3dSurface->GetDesc(&d3dSurfaceDesc); IDirect3DSurface9* d3dOffSurface; d3dDevice->CreateOffscreenPlainSurface( d3dSurfaceDesc.Width, d3dSurfaceDesc.Height, D3DFMT_D32F_LOCKABLE, D3DPOOL_SCRATCH, &d3dOffSurface, NULL); // FAILS: D3DERR_INVALIDCALL D3DXLoadSurfaceFromSurface( d3dOffSurface, NULL, NULL, d3dSurface, NULL, NULL, D3DX_FILTER_NONE, 0); // Copy from offscreen surface to CPU memory ... The code fails on the call to D3DXLoadSurfaceFromSurface. It returns the error value D3DERR_INVALIDCALL. What is wrong with my code?

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• SQL SERVER – Convert Seconds to Hour : Minute : Seconds Format

  - by Pinal Dave

  Here is another question I received via email. “Hi Pinal, I have a unique requirement. We measure time spent on any webpage in measure of seconds. I recently have to build a report over it and I did few summations based on group of web pages. Now my manager wants to convert the time, which is in seconds to the format Hour : Minute : Seconds. I researched online and found a solution on stackoverflow for converting seconds to the Minute : Seconds but could not find a solution for Hour : Minute : Seconds. Would you please help?” Of course the logic is very simple. Here is the script for your need. DECLARE @TimeinSecond INT SET @TimeinSecond = 86399 -- Change the seconds SELECT RIGHT('0' + CAST(@TimeinSecond / 3600 AS VARCHAR),2) + ':' + RIGHT('0' + CAST((@TimeinSecond / 60) % 60 AS VARCHAR),2)  + ':' + RIGHT('0' + CAST(@TimeinSecond % 60 AS VARCHAR),2) Here is the screenshot of the resolution: Reference: Pinal Dave (http://blog.SQLAuthority.com)Filed under: PostADay, SQL, SQL Authority, SQL DateTime, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Jr developer report bug to maybe futur boss

  - by Cryptoforce

  I applied for a Web developer job in Quebec City and they call me back for a phone interview everything went well it last for over a hours and at the end they ask me to send code simple and a portfolio but in my research about the company and their products I found a PHP error(bug) in their app. Should I tell them or I will look like a total jerk and blew my chance for a interview? I know it might sound stupid, as a Jr developer I did 2 interviews they didn't went so well and I am very interested in this position part of my question is like a big lack of confidence so to make it short should I tell them about where is the error and how to fix it? Thanks

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• Pros and cons of using Grails compared to pure Groovy

  - by shabunc

  Say, you (by you I mean an abstract guy, any guy in your team) have experience of writing and building java web apps, know about filters, servlet mappings and so on, and so on. Also, let us assume you know pretty well any sql db, no matter which one exactly, whether it mysql, oracle or psql. At last, let pretend we know Groovy and its standard libraries, for example all that JsonBuilder and XmlSlurper stuff, so we don't need grails converters. The question is - what are benefits of using grails in this case. I'm not trying to start flame war, I'm just asking to compare - what are ups and downs of grails development compared to pure groovy one. For instance, off the top of my head I can name two pluses - automatic DB mapping and custom gsp tags. But when I want to write a modest app which provides small API for handling some well defined set of data, I'm totally OK with groovy's awesome SQL support. As for gsp, we does not use it at all, so we are not interested in custom tags as well.

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• Non-language-specific interview questions for a senior web developer

  - by Songo

  I came across a job posting for a senior web developer position. The posting said that the development will be done using Ruby on Rails, but no prior knowledge is required. I confirmed with a contact in that company that a PHP web developer can apply for it or even an ASP.Net developer. I also confirmed that the interview won't contain any questions specific to PHP or Ruby on Rails. Can anyone please provide a good list of questions for a senior web developer that isn't specific to a certain language? Note This question isn't a duplicate for similar posts asking for questions relating to PHP, .Net or Ruby. Also, I'm not looking for topics to learn as a web developer, but rather interesting questions for a technical interview given the former conditions.

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• SQL SERVER – Puzzle Involving NULL – Resolve – Error – Operand data type void type is invalid for sum operator

  - by pinaldave

  Today is Monday let us start this week with interesting puzzle. Yesterday I had also posted quick question here: SQL SERVER – T-SQL Scripts to Find Maximum between Two Numbers Run following code: SELECT SUM(data) FROM (SELECT NULL AS DATA) t It will throw following error. Msg 8117, Level 16, State 1, Line 1 Operand data type void type is invalid for sum operator. I can easily fix if I use ISNULL Function as displayed following. SELECT SUM(data) FROM (SELECT ISNULL(NULL,0) AS DATA) t Above script will not throw an error. However, there is one more method how this can be fixed. Can you come up with another method which will not generate error? Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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• How do I get the compression on specific dynamic body

  - by Mike JM

  Sorry, I could not find any tag that would suit my question. Let me first show you the image and then write what I want to do: I'm using box2D. As you can see there are three dynamic bodies connected to each other (think of it as a table from front view).The LEG1 and LEG2 are connected to the static body. (it's the ground body). Another dynamic body is falling onto the table. I need to get the compression in the LEG1 and LEG2 separately. Joints have GetReactionForce() function which returns a b2Vec, which in turn has Length() and LengthSqd functions. This will give the total sum of the forces in any taken joint. But what I need is forces in individual bodies that are connected with joints. Once you connect several bodies with a single joint it again will show the sum of forces which is not useful.Here's the case iI'm talking about:

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• SEO consequences for merging country sites in a .com

  - by Pekka

  I am in the process of refactoring a number of rental portals I've built for a company with locations in Austria, Germany, Switzerland, and the Netherlands. Instead of the current setting of each country site running under its own domain name: www.companyname.de www.companyname.ch www.companyname.at I would love to merge them all in this way: www.companyname.com/de www.companyname.com/ch www.companyname.com/at with the country TLDs doing a 301 redirect to the respective .com address. However, I have been repeatedly told not to do this due to likely problems with SEO - the business is very SEO dependent, and being a rental chain, needs to be strong in local results. So the question is: Is there an unavoidable hit in Search Engine Optimization when redirecting to a central .com domain? What measures can be taken to soften the blow? What comes to my mind is explicitly specifying a lang attribute in the html tag. Are there any other ways to specifically point out geographical location for sub-directories?

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• Host Matching Interview Tips?

  - by Lambert

  So I've gotten past the technical interviews for a company, and now I'm having an interview with my potential host for an internship during the summer. What are some tips for interviews like these? I know they're not really technical, but I'm not sure what exactly they are meant to gauge. Any tips on what to say, how to show my interest in the project, questions I should ask, etc.? Edit: Side question: What's a good synonym for the word "interesting" or "interested"? I find that I use those words a bit too often (e.g. "I'm definitely interested in working on the front-end!" or "Yeah, that sounds really interesting, I would love learning more about it." or "Those all sound really interesting, I'm definitely interested in all of them!", etc.)... but I can't seem to find any good synonyms. (Online sites don't really give me good synonyms.) Any ideas?

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• Need assistance for domain forwarding

  - by Yusuf Andre

  Briefly my question is about combining my registered domain with the websites listening on port 80/8080 on my server. I have a web server IIS on windows 7 and two web sites listening on port 80 and 8080. I have successfully forwarded any incoming request to port 80 and 8080 to my web server. So everything works like a charm when I try to access these websites entering http://myglobalip:80/Index.aspx or http://myglobalip:8080/Index.aspx from a computer outside of the local network. So I have a domain registered, lets say www.mydomain.com. What steps should I follow in which sequence? What should I consider to do? I need a step by step guide to follow. I have registered my domain on godaddy's website and only configured forwarding so the domain forward to my webserver but when I attempt to access the web page, It always try and try until It times out.

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• Linux installation on Acer Aspire One D270

  - by ronnie

  I was planning to buy Acer Aspire One D270 within a few days and as everybody installs linux on their netbook I was also planning to do that. Now, my question is how is Acer's hardware compatibility with linux and specifically in respect to the new Acer Aspire One D270. Has anybody tried installing linux on these new netbooks. It will be a great help if a D270 user can share his/her experience with linux usage. I read on some forums that there is some linux driver issue with Intel GMA 3600 and that people are not able to adjust their brightness. So, as I am a linux noob is this a major issue or not. Specs: RAM : 2Gb DDR3 Processor: Intel N2600(Cedar Trail) Graphics: Intel GMA 3600 HardDisk: 320Gb 5400 rpm

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• What was your most challenging project? and why? [closed]

  - by tau

  I am asked this question many times in the interviews. I get confused about which project to tell them and why some project would look challenging or non-challenging. What are they looking for in the answer? Any software is a challenge before it gets started and it becomes a normal software engineering task after it has finished. All softwares I made were challenging until they got finished. Do I misunderstood the word "challenge"? Whats wrong in my thinking? What was your most challenging project and why you think so?

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• Javascript and PHP how should I en/decode my data

  - by Ron

  Hello everyone. I whould like to know in what encryption should I encode my data and why first of all, I use GET method because it is search engine inside website. second, I use RTL language (hebrew) and thrid which basically is why I ask this question - firefox and safari (as I understood) encode and decode urls automaticly so if I encoded url, in firefox I will see it decoded which is good but if I copy-paste the url to the address bar and than enter the site firefox encode the uncoded url to utf (i think). anyway, what en/decode should I use, and how can I overcome the firefox auto en/decode?

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• How can I prevent ubuntu from mounting particular partitions/deivices?

  - by Patryk

  I would like to stop Ubuntu from mounting my other (Windows') partitions automatically (since I do not need it really often - and especially I would like not to automount "System reserved" partition for Windows. There is a similar question here How can I stop Ubuntu 12.04 from mounting Fedora 16's Swap Partition? but! I do not have these partitions added in /etc/fstab. How can I do it ? For proof, my /etc/fstab proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda7 during installation UUID=1384cee0-6a71-4b83-b0d3-1338db925168 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda6 during installation UUID=e3729117-b936-4c1d-9883-aee73dab6729 none swap sw 0 0 #------ MY WINDOWS D DRIVE---------- I WANT TO KEP IT UUID=98E8B14DE8B12A80 /media/d ntfs defaults,errors=remount-ro 0 0

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• Why is email HTML stuck in the 90's?

  - by Sean Dunwoody

  (disclaimer - I've already tried asking this on StackOverflow, but apparently it was off topic. If the same is true here please let me know and I'll close/delete this question.) I've spent about a day putting together a frustrating email newsletter, using tables, inline styles etc. It feels a lot harder than it should be. I was just wondering, is there any reason why email clients have such poor support of HTML and CSS (CSS in particular)? I would have imagined they'd be scrambling to outdo each other in this department ... Is is a security thing (I can't really imagine why)? Or are they just lazy?

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• Do I need to know servlets and JSP to learn spring or hibernate or any other java web frameworks?

  - by KyelJmD

  I've been asking a lot of people where to start learning java web development, I already know core java (Threading,Generics,Collections, a little experience with (JDBC)) but I do not know JSPs and servlets. I did my fair share of development with several web based applications using PHP for server-side and HTML,CSS,Javascript,HTML5 for client side. Most people that I asked told me to jump right ahead to Hibernate while some told me that I do not need to learn servlets and jsps and I should immediately study the Spring framework. Is this true? do I not need to learn servlets and JSPs to learn hibernate or Spring? All of their answers confused me and now I am completely lost what to learn or study. I feel that if I skipped learning JSP and servlets I would missed a lot of important concepts that will surely help me in the future. So the question, do I need to have foundation/know servlets and JSP to learn spring or hibernate or any other java web frameworks.?

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• Ubuntu DNS back to normal

  - by Mohd Shahril

  Yesterday, I change my DNS into google DNS because my ISP has place so many restriction.. So I edit my resolv.conf file and it's look like this.. # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN #nameserver 127.0.1.1 nameserver 8.8.8.8 nameserver 8.8.4.4 But, when I login in my ubuntu, I try to look at my favourite site, but it's show could not connected, so I begins to suspect with my DNS, so I look back, and suprisingly, it's become normal back.. # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.1.1 So my question, how to make this file don't revert to using default DNS ? I want google DNS, not my ISP DNS.. I'm using new ubuntu 12.10, in 12.04, this problem doesn't occur..

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• One method with many behaviours or many methods

  - by Krowar

  This question is quite general and not related to a specific language, but more to coding best practices. Recently, I've been developing a feature for my app that is requested in many cases with slightly different behaviours. This function send emails , but to different receivers, or with different texts according to the parameters. The method signature is something like public static sendMail (t_message message = null , t_user receiver = null , stream attachedPiece = null) And then there are many condition inside the method, like if(attachedPiece != null) { } I've made the choice to do it this way (with a single method) because it prevents me to rewrite the (nearly) same method 10 times, but I'm not sure that it's a good practice. What should I have done? Write 10 sendMail method with different parameters? Are there obvious pros and cons for these different ways of programming? Thanks a lot.

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• Separate shaders from HTML file in WebGL

  - by Chris Smith

  I'm ramping up on WebGL and was wondering what is the best way to specify my vertex and fragment shaders. Looking at some tutorials, the shaders are embedded directly in the HTML. (And referenced via an ID.) For example: <script id="shader_1-fs" type="x-shader/x-fragment"> precision highp float; void main(void) { // ... } </script> <script id="shader_1-vs" type="x-shader/x-vertex"> attribute vec3 aVertexPosition; uniform mat4 uMVMatrix; // ... My question is, is it possible to have my shaders referenced in a separate file? (Ideally as plain text.) I presume this is straight forward in JavaScript. Is there essentially a way to do this: var shaderText = LoadRemoteFileOnSever('/shaders/shader_1.txt');

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• How do I get an Epson al-c 1700 printer working?

  - by Edmond Frants

  I have a brand new epson aculaser c1700 and i'd like to have it working fine on ubuntu 12.04. so i did my homework, kind of, no printer driver comes for this printer in cups ... so i asked epson support who drove me to avasys who no longer handle support since december 2011. This the question that is still in my mind : as this printer comes with an osx driver which uses cups as printer server, how come no driver can be found for cups? I tried to get ppd and filters from osx driver and use them to install the printer on ubuntu but no answer from printer and none printed sheet i have .... i'm so disappointed i could cry ... I'd like to work with someone to get this working fine, please help me!

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• Most efficient way to rebuild a tree structure from data

  - by Ahsan

  Have a question on recursively populating JsTree using the .NET wrapper available via NuGet. Any help would be greatly appreciated. the .NET class JsTree3Node has a property named Children which holds a list of JsTree3Nodes, and the pre-existing table which contains the node structure looks like this NodeId ParentNodeId Data AbsolutePath 1 NULL News /News 2 1 Financial /News/Financial 3 2 StockMarket /News/Financial/StockMarket I have a EF data context from the the database, so my code currently looks like this. var parentNode = new JsTree3Node(Guid.NewGuid().ToString()); foreach(var nodeItem in context.Nodes) { parentNode.Children.Add(nodeItem.Data); // What is the most efficient logic to do this recursively? } as the inline comment says in the above code, what would be the most efficient way to load the JStree data on to the parentNode object. I can change the existing node table to suite the logic so feel free to suggest any changes to improve performance.

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• Pathfinding library

  - by Shivan Dragon

  I'm an amateur game developer and somewhat amateur Java developer as well. I'm trying to find a way to have path finding for my game(s). I've first Googled for some existing Java libraries that have various path-finding implementations, but I've failed to find any. It seems to me that the only way to get pathfinding code is to use it via a game engine (like Unity). But I'd just like to have a library that I can use and make the game loop and other stuff on my own. Failing to find such a library I've tried implementing some algorithms myself. I've managed to make a running A* in Java, but for fancier stuff like D* I find it hard to do it by hand. So then, my question is, are there any Java libraries that contain at least some basic pathfinding algorithms implementations?

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