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• Manually activate Network Manager Applet

  - by diosney

  The issue I've is that when I connect via modem through gnome-ppp the Network Manager Applet don't detect a connection and don't let me use the configured VPNs via its interface. How Can I manually activate the Network Manager Applet? What I need is to enable the Network Manager apple in order to use the "VPN Connection" section of the GUI. When I don't have an ethernet cable connected and I connect through a modem the Network Manager applet doesn't enables itself, it is like if don't recognizes the ppp0 interface. My question is: there is a way to force the Network Manager GUI indicator to make it "alive"/"up"/"enabled" in order to use the "VPN Connections"section? Thanks in advance.

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• How to verify the Liskov substitution principle in an inheritance hierarchy?

  - by Songo

  Inspired by this answer: Liskov Substitution Principle requires that Preconditions cannot be strengthened in a subtype. Postconditions cannot be weakened in a subtype. Invariants of the supertype must be preserved in a subtype. History constraint (the "history rule"). Objects are regarded as being modifiable only through their methods (encapsulation). Since subtypes may introduce methods that are not present in the supertype, the introduction of these methods may allow state changes in the subtype that are not permissible in the supertype. The history constraint prohibits this. I was hoping if someone would post a class hierarchy that violates these 4 points and how to solve them accordingly. I'm looking for an elaborate explanation for educational purposes on how to identify each of the 4 points in the hierarchy and the best way to fix it. Note: I was hoping to post a code sample for people to work on, but the question itself is about how to identify the faulty hierarchies :)

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• Exporting UV coords from Blender

  - by Soapy

  So I have searched on google and various other websites but I've not found an answer. The only ones I did find did not work. So my question is how do I get UV coords from blender (2.63)? Currently I'm writing my own custom file exporter, and so far have managed to export vertices and their normals. Is there a way to export the UV coords? N.B. I'm currently try to figure it out using a simple cube that is unwrapped and has a texture applied to it.

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• PageRank sharing between domains?!

  - by Senthil

  I own three domains, say.. example.com, example.in, example.co.in I have bought the .in and .co.in TLDs only to protect the brand. But I have this question: If I make the other two also point to my hosting so that regardless of which one the user types, they are taken to the same website, will the PageRank be split into three and will each domain have one third the actual PR value? What should I do with the other two domains? Where should I point them to, if I don't intend to use them at all (i.e., what should I give in place of the ns1.myprovider.com, ns2.myprovider.com etc..?)

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• How can I repair a corrupt kernel if no others are installed?

  - by Willi Ballenthin

  I've been running Ubuntu 10.04 on my laptop for quite some time. When I went to boot it up this morning, BAM! kernel panic (which immediately lead to human panic) when loading the kernel. So I've spent much of the day troubleshooting, and my current theory is that the FS is fine, but that the kernel image may be corrupt. Let's go with this current theory for the sake of this question, as I am interested how it is done. How can I replace the kernel image if I have no bootable kernels? Can I boot to a 10.04 live CD, copy the the vmlinuz-2.6.3x... to the HD and go from there? Wouldn't I want to copy the initramfs as well, but configured for the desktop system? Can I generate this from the live CD?

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• What is the current legal status of magnet links?

  - by Moonwalker

  Prelude: I develop a cloud service which could be described as dropbox meets torrents and as side effect it enables distribution of arbitrary content via magnet links. Certain amount of magnet links will be displayed on the main website (I will be able to remove them one-by-one or ban users but no more). I will not be able to avoid magnets without complete rework of overall project architecture and either way it will hurt overall performance badly, probably making service meaningless. So my question is, what should I do, to avoid legal problems if my site in a nutshell is just a collection of magnet links? Privacy achieved via end-user encryption, so there is almost no access restrictions on the website. And anyway will help me any? Will hosting in particular country help me?

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• BizTalk 2009 - Messages: Last 50 suspended

  - by StuartBrierley

  Having previously talked about the lack of the traditional HAT in BizTalk 2009, the question then becomes how do you replicate some of the functionality that was previsouly relied on? I have already covered the Last 100 Messages Received  and the Last 100 Messages Sent queries so what about suspended messages? In BizTalk 2004 we had a query in HAT to return the last 100 suspended message instances.  Lets create a direct replacement in a BizTalk 2009 Hatless environment. Basically we are creating a query to search for the last fifty messages that were suspended by BizTalk: Coming up Service instances - Last 100

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• Is curl something that's not expected to be installed on servers

  - by Ieyasu Sawada

  Is curl something that's not expected to be installed on servers? I'm working for a small development shop and 99% of the problems that I'm having is regarding curl. Most of the projects that I'm working on involves calling a web API. Most web API's suggests using curl by default since you have to pass in a POST data in the request. Every time I complain to my senior that the server that I'm working on doesn't have curl installed the excuse that I'm always getting is that curl is not needed you can always use file_get_contents. So the question: is curl something that's not expected to be installed on servers that runs PHP, should I always develop using file_get_contents and not curl? Are there any advantages of using file_get_contents over curl or vise versa? If it helps, the context here is wordpress plugins, shopify apps, drupal modules and other bits of code that a lot of people can install.

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• How do you handle unfound resources?

  - by concept3d

  For example your game expects a certain asset to be loaded what is the best way to handle it if the resource isn't found, for example: Texture* grassTexture = LoadTexture("Grass.png");// returns NULL as texture is not found. Mesh* car = LoadMesh("Car.obj");// returns NULL as 3d mesh is not found What if for some reason the resource wasn't found e.g. deleted by user, misspelling while in development ? Should I use Assertions (which is only useful while in development? Exit the game gracefully ? or even thrown an exception and try to handle it? On a separate question, if I used a handle system instead of pointers (which I am already working on) I don't see how this would help me recover from unfound resources, Does a handle system help in situations like this?

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• AutoMatically Creating New Sites When New Users Sign Up [closed]

  - by Eddy Freeman

  I would like to know how hosted eCommerce sites like www.shopify.com, www.3dCart.com etc.. automatically creates new sites when new users sign up. What kind of tools do they use to create those sites into the users profile. I have tried googling but couldn't find an answer. Does any of you guys have any knowledge or experience that you can share with me? Or do you know a tutorial that you can point me to? I hope my question is clear. Thanks for your help.

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• HP 6735s Brightness hotkey problem; where is brightness panel?

  - by Paul

  I have installed ubuntu 11.10 on my laptop hp 6735s. The screen is often too dark and i want to make it brighter, although the hotkeys Fn+F7/F8 are not working. I have tried some things: Firstly it appears that sometimes they are in fact working, after reboot they either work and continue to do so or they don't. I've read about a brightness applet; but where can i find or install it? I have tried some grub options; acpi_osi=Linux and acpi_backlight=vendor but nothing changes. I don't want to add another question but since it might be related: my laptop also gets quite hot, i'm having doubts whether ubuntu connects to the available sensors and cooling plans (or how does it work???); sensors (or psensor) only shows 2 sensors both named temp1. Any help is greatly appreciated! Paul

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• Custom Title Not Used on SERP [duplicate]

  - by rahstame

  This question already has an answer here: Title tag different from title appearing in Google? 1 answer I am using Wordpress Yoast plugin, and this is not the first time that I used it. I have used it in four of my sites. Problem: Google is not using my custom defined title on my homepage. The website is aboveinfranet[dot]com. If I search "above infranet solutions inc" If you open the site, it will show you the right title that I wanted to achieve.

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• Redirect from the main page on multilanguage site

  - by Pluto

  I've decided to start developing multilingual web site. Now I'm thinking about the structure. The idea is to use a simple algorithm to find out what language is most interesting to the visitor when he makes his first visit to the root page, and then forward him to the corresponding address, for example, http://example.com/en/ for English-speaking audience and http://example.com/ru/ for Russians. The question is, how search engines react on such redirect? If this approach does not take away site's reputation, which redirects should I choose: 301 or 302? I would be very grateful for the reasoned response.

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• Make a flowchart to demonstrate closure behavior

  - by thomas

  I saw below test question the other day in which the author's used a flow chart to represent the logic of loops. And I got to thinking it would be interesting to do this with some more complex logic. For example, the closure in this IIFE sort of boggles me. while (i <= qty_of_gets) { // needs an IIFE (function(i) promise = promise.then(function(){ return $.get("queries/html/" + product_id + i + ".php"); }); }(i++)); } I wonder if seeing a flowchart representation of what happens in it could be more elucidating. Could such a thing be done? Would it be helpful? Or just messy? I haven't the foggiest clue where to start, but thought maybe someone would like to take a stab. Probably all the ajax could go and it could just be a simple return within the IIFE.

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• Is there a way to make the speaker silent while the headphone-jack keeps working? 12.04LTS

  - by Cees

  The PC I am working on is in a loud environment. If I need sound, I use the headphone. On my own account this is easy: I mute the speaker in the sound-setting. I am not the only user, others use the Guest-session. And that's what this question about: Is it possible to turn off the speaker by default on a guest-session AND leave the headphone-output working? If yes, how can I fix it? I tried to loosen the speaker (hardware) connection but it is soldered to the mainboard. The soundcard on the PC is: HDA Intel at 0xfea78000 irq 44 /proc/asound/pcm ---------------------------+ ¦00-00: ALC662 rev1 Analog : ALC662 rev1 Analog : playback 1 : capture 1¦ ¦00-02: ALC662 rev1 Analog : ALC662 rev1 Analog : capture 1 Ubuntu 12.04LTS is running on the system, my account has all the (admin) rights

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• Webmaster tools showing 404 for non existent folder pages

  - by Jody

  Google webmaster tools is reporting some/many 404 urls that don't exist on my site. The links are things such as domain.com/xyz/ However that doesn't exist, but domain.com/xyz/index.html does exist. The "linked from" pages all show proper links to the "/xyz/index.html". The page without index.html DOES 404, but why is google even trying these urls if they are not linked to? My real question, is there a way to have google stop attempting to load these pages, and ultimately remove these from the crawl errors report. Thanks.

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• How do I get unity back?

  - by Siva

  I got the latest driver software for my old ATI Radeon 4600, and it had me restart. My screen was then just a big terminal! I could log in, but when I typed 'unity' into it as a command, it said something about DISPLAY not found; set it to :0 (zero). I don't know enough about Linux to deal with this. I am using a DSL live CD to ask this. I looked at similar questions suggested, even searched. If my question's a duplicate, I apologise, but I didn't understand what I saw there. T_T

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• s expression representation for c

  - by wirrbel

  Experimenting with various lisps lately (clojure especially) i have wondered if there are any s expression based representations of (subsets) of c, so you could use lisp/closure to write macros and then convert the s-expression c tree to pure c. I am not asking for a to-c-compilers of lisp/scheme/clojure but more of using lisps to transform a c syntax tree. Little background to why i am asking this question: i find myself to really enjoy certain clojure macros like the threading macros -> doto etc. And i feel that they would be great in a non FP environment as well.

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• Looking for articles/books on: How do games make money? What models do they use?

  - by cable729

  I'm trying to research the ways in which games make money. I want to know more about the models they use (free/premium, trial/subscription, free-to-play with micro-transactions, etc.). In addition, I want information on which models work for which games, what models are best for which age groups, etc. I've tried my best to find information, and Google hasn't turned anything up at all. I think I'll stop by my University's library and see if there's anything there. This may seem like a broad question, but I'm looking for links and titles of books, not typed-out answers.

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• Generating AdSense ad impression?

  - by Danny

  I owned two website. Let's say as example www.first.com and www.second.com. I have two apps in Google chrome-store whose app URL is: app1 URL = www.first.com/currency_converter.php app2 URL = www.first.com/currency_converter.php respectively. Currently if user lunch/click on first app URL then I am forwarding them to my first website homepage (www.first.com), where I have AdSense code with currency converter app. In this way I am generating Google ad impression and traffic for my first website (i.e www.first.com). So is this valid way? Does I am violating any Google AdSense rule? Please provide your reply or suggestions. P.S.: Please comment, if my question is not clear, I will try to write it in some other way.

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• internal error message pops up after each time system is rebooted

  - by Biju

  I had installed ubuntu 12.04 using wubi. But each time i boot the system an internal error message pops up. As show below:- Executable path /usr/share/apport/apport-gpu-error-intel.py Package xserver-xorg-video-intel 2:2.17.0-1ubuntu4 Problem Type crash Apportversion 2.0.1-0ubuntu7 and so on.. I had earlier upgraded to ubuntu 12.04 from ubuntu 11.10. And encountered the same issue. Hence i uninstalled the OS and reinstalled using wubi. I had posted the same query in ubuntu.com/support (Question Number: 195525) But couldnt find a solution. I am using dell inspiron with intel pentium. Need ur help in resolving this issue. thanking u, Biju

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• portfolio building, working for closed-source vs open-source?

  - by jondavidjohn

  I've currently graduated from my first run at higher education, landed my first full-time gig as a web application developer, and absolutely love it. My question is that in looking for jobs I ran across many jobs that require a certain level of experience and code examples. Much of the work I am doing is both protected by a login, and closed source. How does someone, that is just starting out and needs to be building a resume, go about preparing for the next job. (no matter how much i love my current job, i feel like it's only responsible to always be preparing)

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• Shortcut to change Launcher 'Hide' setting

  - by joris

  When I'm working on my laptop I have periods that I am only using a couple of programs, so the default intellihide setting of the Launcher ('Dodge windows') is very handy. But I also have periods that I have to switch very often between programs, and then I find it very useful (and better for my workflow) that the Launcher doesn't hide. Now, every time I wan't to switch I have to open CCSM and change the setting (Unity plugin - Hide Launcher), but it would be easier if I could use a shortcut for it. So my question: Is there a way to create a shortcut to switch between (or change) the two settings of Compiz? I thought of command line interface to compiz, but I couldn't directly find something like that.

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• Handling buildings in isometric tile based games

  - by MustSeeMelons

  A simple question, to which i couldn't find a definitive answer - how to manage buildings on a tiled map? Should the building be sliced in to tiles or one big image? EDIT: The game is being built from scratch using C++/SDL 2.0, it will be a turn based strategy, something like Fallout 1 & 2 without the hex grid, a simple square grid, where the Y axis is squished by 50%. Buildings can span multiple tiles, the characters move tile by tile. For now, the terrain is completely flat. Some basic functionality is in place, so I'm aiming to advancing the terrain and levels them selves - adding buildings, gates, cliffs, not sure about the elevation.

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• About floating point precision and why do we still use it

  - by system_is_b0rken

  Floating point has always been troublesome for precision on large worlds. This article explains behind-the-scenes and offers the obvious alternative - fixed point numbers. Some facts are really impressive, like: "Well 64 bits of precision gets you to the furthest distance of Pluto from the Sun (7.4 billion km) with sub-micrometer precision. " Well sub-micrometer precision is more than any fps needs (for positions and even velocities), and it would enable you to build really big worlds. My question is, why do we still use floating point if fixed point has such advantages? Most rendering APIs and physics libraries use floating point (and suffer it's disadvantages, so developers need to get around them). Are they so much slower? Additionally, how do you think scalable planetary engines like outerra or infinity handle the large scale? Do they use fixed point for positions or do they have some space dividing algorithm?

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