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• dhcpd fails to start

  - by TECHPREACHER

  I recently installed Ubuntu 11.10 I then used apt-get to grab isc-dhcp3. I removed Network-Manager and manually configured my network interface eth0. In addition, I hand edited a dhcpd.conf file and designated eth0 as the listen port in /etc/default/isc-dhcp-server. However, each time I attempt to start dhcpd it fails. When I view the syslog file, the last line is as follows: "Not configured to listen on any interfaces!" My eth0 interface works fine. I can ping addresses inside and outside the network and perform DNS queries. Any help would be greatly appreciated. AJ

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• Positive reinforcements @ work [closed]

  - by nurne

  I found out that what fuels me to do well at work are positive reinforcements From bosses, colleagues, and customers My current job at a startup is very demanding My boss doesn't have time to give positive reinforcements, and also i'm always behind schedule so maybe i don't deserve positive reinforcements On the other hand i don't get any negative reinforcements, so i guess that as long as this doesn't happen - what i'm doing is ok How is your relationship with bosses colleagues and customers @ work? Do you need positive reinforcements? Do you get them? How do you make them happen? Is there some kind of standard for developers? For hi-tech? Thanks

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• What should I worry about when changing OpenGL origin to upper left of screen?

  - by derivative

  For self education, I'm writing a 2D platformer engine in C++ using SDL / OpenGL. I initially began with pure SDL using the tutorials on sdltutorials.com and lazyfoo.net, but I'm now rendering in an OpenGL context (specifically immediate mode but I'm learning about VAOs/VBOs) and using SDL for interface, audio, etc. SDL uses a coordinate system with the origin in the upper left of the screen and the positive y-axis pointing down. It's easy to set up my orthographic projection in OpenGL to mirror this. I know that texture coordinates are a right-hand system with values from 0 to 1 -- flipping the texture vertically before rendering (well, flip the file before loading) yields textures that render correctly... which is fine if I'm drawing the entire texture, but ultimately I'll be using tilesets and can imagine problems. What should I be concerned about in terms of rendering when I do this? If anybody has any advice or they've done this themselves and can point out future pitfalls, that would be great, but really any thoughts would be appreciated.

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• New Information Center - Optimize Performance of FMW 11g

  - by Daniel Mortimer

  Following on the heels of the recently published - "Reviewing Security for FMW 11g" Information Center, we are pleased to announce the publication of Information Center: Optimizing Performance of Oracle Fusion Middleware 11g [ID 1469617.2] Screenshot of ID 1469617.2 We are in the process of making further tweaks and changes to improve the other ** "Oracle Fusion Middleware 11g" Information Centers. So watch this space! ** You can navigate to these other Information Centers via the menu found on the left hand side of the "Optimize Performance" Information Center.

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• OTN, T-Shirts, and Tunes at Mezzanine - Tuesday Oct 2.

  - by Bob Rhubart

  By now you've probably heard about the Oracle OpenWorld Music Festival, which will bring an incredible array of bands, spanning the spectrum of genres, to several venues throughout San Francisco. The festival runs Sunday through Thursday, with a break on Wednesday for the Oracle Appreciation Event on Treasure Island featuring Pearl Jam, Kings of Leon, and X. ***CORRECTION*** What you probably don't know is that OTN is sponsoring the Tuesday night Festival show at Mezzanine (444 Jessie Street at Mint), featuring:  GOLDEN STATEDEATH VALLEY HIGH LOW FLYING OWLS The OTN crew will be on hand, passing out t-shirts and resisting the temptation to misbehave. Mostly. 

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• Bunny Inc. Season 2: Find Specialist Partner Resources for Success

  - by kellsey.ruppel

  You may need an additional hand to improve your IT infrastructure, or advice to evolve existing enterprise applications. Or perhaps you’re seeking revolutionary ideas to refresh online presence. Whatever the case, spotting the right partners’ ecosystem will be a central step to grow your business. Don't be a Hare Inc. company by wasting valuable time sourcing relevant expertise, competencies and proven successes on Oracle's product portfolio on your own. Follow Bunny Inc. in the fourth episode of the saga and discover what our worldwide partner community can do for you thanks to the new Oracle Partner Network Specialized program. 

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• How to remove space between application and workspace switcher on Unity launcher?

  - by Tyler Marengo

  I just downloaded Ubuntu 11.10 for the first time. I really enjoy the launcher on the left hand side but have a problem. After playing around with adding applications in it, there are large spaces from the last application to workspace switcher. If I try to drag a new application into the launcher everything moves farther down, instead of filling in the space in between apps. When I right click on the launcher in a blank spot it reads "drop to add application." I'm looking for a way to have all of the applications close together with no spaces, like when I first downloaded Ubuntu.

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• New EMEA Partner Community for Hardware

  - by Julien Haye

  We are delighted to announce the availability of the EMEA HW partner community. The EMEA Partner Community for Hardware is the place where partners in Europe, Middle East and Africa can share experiences and best practices about selling and implementing Servers, Storage and Solaris based projects. You will also receive first-hand information from Oracle on products, training and tools that can help you better market, sell and implement your projects and services based on Oracle Hardware. If you are an individual  working for an Oracle partner and your job is selling, implementing or supporting Oracle Servers, Storage and Solaris projects in EMEA then this community is for you. For further information on the EMEA HW partner community and instructions on how to become a member please visit: www.oracle.com/partners/goto/hardware-emea

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• Programming curricula

  - by davidk01

  There are a lot of schools that teach Java and C++ but whenever I see the syllabus for one of these classes it's almost always some cut and dry OO stuff with possibly some boring end of class project. With all the little gadgets and emulators for those gadgets why aren't more schools re-purposing those classes so that the students work their way up to building android or meego applications? That way students get to experience first hand what it takes to engineer/build a piece of software instead of doing finger exercises with syntax. Practically every self-taught programmer that I know started programming because they wanted to make their gadgets do things for them. They didn't learn a programming language with an abstract conception of using it on some far distant project so I don't understand why schools don't emulate this style of teaching.

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• Is having 'Util' classes a cause for concern? [closed]

  - by Matt Fenwick

  I sometimes create 'Util' classes which primarily serve to hold methods and values that don't really seem to belong elsewhere. But every time I create one of these classes, I think "uh-oh, I'm gonna regret this later ...", because I read somewhere that it's bad. But on the other hand, there seem to be two compelling (at least for me) cases for them: implementation secrets that are used in multiple classes within a package providing useful functionality to augment a class, without cluttering its interface Am I on the way to destruction? What you say !! Should I refactor?

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• How to solve dual monitor issue, which happens only during X start?

  - by tamashumi

  When is loading and two monitors are connected, instead of a login screen I see this: ...after clicking OK, selection appears: Then I'm following to console login, disconnecting by hand the secondary monitor cable, restart lightdm with a command sudo service lightdm restart ...and voila! System loads fine. If I disconnect the cable before boot X will be loaded fine too. It's not a nice 'feature' when I have to disconnect the cable each boot or X restart. I was trying to delete monitors.xml but it didn't help. The situation relates to my notebook with Intel integrated GPU. The same happens on two different pairs of monitors: at the office and at home. How can I fix this? Ubuntu 12.04 x64 Desktop with default Unity GUI.

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• Should I tell a departed coworker about their "sev 1" defect?

  - by noahz

  I had a co-worker leave our company recently. Before leaving, he coded a component that had a severe memory leak that caused a production outage (OutOfMemoryError in Java). The problem was essentially a HashMap that grew and never removed entries, and the solution was to replace the HashMap with a cache implementation. From a professional standpoint, I feel that I should let him know about the defect so he can learn from the error. On the other hand, once people leave a company, they often don't want to hear about legacy projects that they have left behind for bigger and better things. What is the general protocol for this sort of situation?

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• Kinect joint coordinates and XNA animation

  - by Sweta Dwivedi

  I have written a program to record the x,y,z coordinated of the Hand joint and I want to animate my models 2D or 3D according to these coordinates. . .However the output of the x,y,z coordinates are fluctuating from -0 to 1 but not more than that.. So i assume I will need to multiply them back with the screen width and height, however it still doesnt seem to animate according to the original x,y,z points Any transformations I might be missing out? while ((line = r.ReadLine()) != null) { string[] temp = line.Split(','); int x = (int) float.Parse(temp[0]))* maxWidth); int y = (int) float.Parse(temp[1])) * maxHeight); }

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• Largest successful JavaScript project? [closed]

  - by 80x24 console

  A common theme in the GWT community is "I wouldn't want to build a project of THAT size using a pure JavaScript library!" What is the largest project that you have successfully delivered with frontend functionality written in JavaScript? (not Java or GWT) Please provide at least a hand-wavy SLOC estimate of the unique JS code (not including libraries, frameworks, toolkits, test code, generated code, server-side processing such as PHP, etc.) that was in the finished product. Note to GWT advocates: Please read the question carefully before answering. I've heard plenty of stories about JS failures and GWT successes, but I'd like to hear some quantified JS successes. Note to mods: This is primarily a business-of-software question, not a tools question. It factors into a real-world business decision.

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• Shader inputs in a general purpouse engine

  - by dreta

  I'm not familiar with SDKs like Unity or UDK that much, so i can't check this off hand. Do general purpouse engines allow users to create custom uniform variables? The way i see it, and the way i have implemented it in an engine i'm writing to learn 3D, is that there is a "set" of uniforms provided by the engine and if you want to write a custom shader then you utilize uniforms you need to create a wanted effect. Now, the thing is, first of all i'm not an artist, second of all, i didn't have a chance to create complex scenes yet. So my question is, is it common practice to define variables that the engine provides and only allow the user to work with what they're given? Allowing users to add custom programs and use them where they want is not hard, but i have issues imagining how you'd go about doing the same for uniforms.

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• LL(8) and left-recursion

  - by Peregring-lk

  I want to understand the relation between LL/LR grammars and the left-recursion problem (for any question I know parcially the answer, but I ask them as I don't know nothing, because I am a little confused now, and prefer complete answers) I'm happy with sintetized or short and direct answers (or just links solving it unambiguously): What type of language isn't LL(8) languages? LL(K) and LL(8) have problems with left-recursion? Or only LL(k) parsers? LALR(1) parser have troubles with left or right recursion? What type of troubles? Only in terms of the LL/LALR comparision. What is better, Bison (LALR(1)) or Boost.Spirit (LL(8))? (Let's suppose other features of them are irrelevant in this question) Why GCC use a (hand-made) LL(8) parser? Only for the "handling-error" problem?

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• Is it possible that Unity would some day switch back to Mutter?

  - by David

  I remembered that the first Unity was indeed built on Mutter, but later ported to Compiz due to poor performance. I also know Canonical practically incorporated Compiz to work closely for future Unity, so this is getting less likely. But Compiz just seems pretty outdated now that GNOME3/GTK3/Mutter is becoming more mainstreamed, and it is known to deliver some performance issue, but on the other hand Mutter seems pretty good and is still steadily developing now, I'm just wondering if anyone related to the project is still testing and evaluating the possibility of Unity on Mutter? Not that you have to tell me now if you're going to do it or not. I just wanna know if anyone is considering it. Thanks.

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• Making it myself vs. modifying someone else's code as a beginner

  - by JamesGold

  I just started getting into open source projects mainly for the learning experience. I've made a few tiny contributions to some small projects. Most of my time has been spent just reading over other people's code and trying to understand how it works. Often times I find myself frustrated by a lack of documentation and unit tests. There are also times where I think I can see a more intuitive solution to a problem, but implementing it would require large restructuring of code. I see all this and wonder to myself why I don't just start clean on the whole thing by myself and do things "the right way"? I'd also enjoy the experience of building it from scratch, as it would force me to learn skills that I might not learn by working on other people's code. On the other hand, working on other people's code is also a great experience because it requires me to understand and work with other people's code and collaborate with them. It's just harder, IMO. Thoughts?

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• Beginner: How to Make Explorer Always Show the Full Path in Windows 8

  - by Taylor Gibb

  In older versions of Windows the Title Bar used to display your current location in the file system. In Windows 8 this is not the default behavior, however, you can enable it if you wish to. Display the Full Path in the Windows Explorer Title Bar Press the Windows + E keyboard combination to open Windows Explorer and then switch over to the View tab. On the right-hand side click on options and then select Change folder and search options from the drop-down. When the Folder Options dialog opens, switch over to the View options. Here you will need to tick the Display the full path in the title bar check box. That’s all there is to it. How To Switch Webmail Providers Without Losing All Your Email How To Force Windows Applications to Use a Specific CPU HTG Explains: Is UPnP a Security Risk?

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• How to better start learning programming - with imperative or declarative languages?

  - by user712092

  Someone is interested in learning to program. What language paradigm should I recomend him - imperative or declarative? And what programming language should he start with? I think that declarative because it is closer to math. And I would say that Prolog might be the best start because it is based on logic and programs are short. On the other hand at school we started learning from imperative languages and I am not sure whether there is a benefit to start with them instead of declarive ones. Thanks. :)

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• Education and Career Resources from Microsoft and the Community

  - by KKline

  Sometimes I'm timely in getting the news out on useful resources. And, other times, I'm a bit slower on the draw. As I told my friends back at New Year's Day, "As an official member of the Procrastinators Club, welcome to 2008!" On the other hand, it's always good to remind folks of great resources that are still available and on the shelf. Why? Well, the Internet hits us with such a deluge of constantly new material, that we often forget about the old(ish) stuff that's still really useful. Darth...(read more)

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• Flowchart for solving programming problems

  - by nurne

  I noticed that every developer implements a somewhat different flowchart for solving programming problems. By flowchart I mean a defined system of techniques that the developer goes through in a certain sequence, trying to solve the problem at hand. Some examples for techniques: Google "how to..." or "... tutorial". Search the java/msdn/apple/etc API doc for the specific class or method. Search in stack overflow the exact problem with some tags like [iphone]/[java] etc. Take a nap and let the subconscious work. Debug. Draw the algorithm or system. Google the logged error message. Ask a colleague or manager. Ask a new question in stack overflow. From your experience, what is the best flowchart for solving a programming problem?

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• Gnome 3 - Old fashioned buttons and menus

  - by vigs1990

  I've upgraded to Gnome 3 and the problem I'm facing is that when I restart, sometimes the menus and buttons look old-fashioned like this: whereas sometimes, it looks modern and neat like this: Notice the differences between the two: here are a few differences: The menu bar (notice the difference in fonts, dark grey color of Snapshot1 vs the light grey color in Snapshot2 in the background) The file navigation bar bellow the menu bar (notice the 'Home' button there and also the left arrow button) The left-hand side navigation bar (font, background color and color of selected folder) The old style look effects the GTK aspects of the interface, such as the menu, buttons, mouse pointer etc. Another observation is that changing the GTK themes does using gnome-tweak-tool when the old style look is loaded does NOT work. However, this works when the regular look is loaded. How can I ensure that the old-fashioned look does not load on boot?

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• Roll Your Own Solaris Blogroll

  - by Larry Wake

  Something handy I just ran across: There are lots of people here who blog about Solaris, either as their main topic, or as the occasional tangent. If the blogger has tagged their post appropriately, here's a quick way to find them: Articles tagged Solaris Articles tagged ZFS Articles tagged IPS Articles tagged DTrace Articles tagged Zones Articles tagged Studio Articles tagged Cluster Note that this is a little different from using the "word cloud" you can find in the right-hand column on this page, since that only finds articles tagged in this blog. The above links will find all tagged blogs.oracle.com posts. Some topics are a little trickier to nail down, because there may not be a standardized tag for the topic, so building a more conventional "blogroll" is on my to-do list. In the meantime, you can also refer to the post Markus Weber made of interesting Solaris 11 launch-related posts.

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• Programming *into* a language vs. writing C code in Ruby

  - by bastibe

  Code Complete states that you should aways code into a language as opposed to code in it. By that, they mean Don't limit your programming thinking only to the concepts that are supported automatically by your language. The best programmers think of what they want to do, and then they assess how to accomplish their objectives with the programming tools at their disposal. (chapter 34.4) Doesn't this lead to using one style of programming in every language out there, regardless of the particular strengths and weaknesses of the language at hand? Or, to put the question in a more answerable format: Would you propose that one should try to encode one's problem as neatly as possible with the particulars of one's language, or should you rather search the most elegant solution overall, even if that means that you need to implement possibly awkward constructs that do not exist natively in one's language?

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