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• multiple godaddy domains to home router then reverse proxy to multiple internal servers [closed]

  - by Dan

  I need someone to steer me correctly... advising on all required components. I have multiple domains with godaddy, say site1.com , site2.com, site3.net I have multiple home LAMP servers... one on say, lampsrv1 = 192.168.0.2:8080 (windows) and lampsrv2 = 192.168.0.3:9080 (linux srv2) I would like to have server1.site1.com point to lampsrv1 and server2.site1.com point to lampsrv2 . I may also want server1.site2.com also point to my lampsrv1 as an option. My thinking is - I have a dedicated linux srv1 with a reverse proxy server behind the router, ie Apache or NGINX or equivalent directing to appropriate LAMP server. It's the godaddy subdomains, cnames or redirections, etc I'm having a challenge with for starters... I have tested apache with virtual servers but can't get proxying to work based on host header info... seems to go to one address making me think its actually the apache reverse proxying that's not quite working. Finally to add to this, my router has a dynamic IP but does lease for quite a while but that would be my final piece. So, I'm sure this might be a popular question but can't seem to piece this together. I need someone who has actually configured this scenario to advise but will take other suggestions.... please indicate if you have successfully configured this.

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• Looking for suggestions: becoming a hireable, young programmer [closed]

  - by Dan

  I am a 17 year old Java programmer that has filled the last year with learning all of the ins and outs of Java - Using Eclipse, and the help of a friend of the family (a Java programming architect for some company), I have learned everything from serializing objects, basic networking, generics, reflection, multi-threading, code optimization and efficiency & some concurrency safety - built my own proxy class, and nowadays, I answer questions on Project Euler. I am seeking some suggestions though on where I go next, or where I go from here to get a job in programming. I dedicate at least an hour every day to coding, sometimes literally, the entire day, and I really have come to love the process. I just started reading Effective Java (v2), and learning Scala (as I see often, possibly the Java replacement) I will be going to college for Computer Science next year - and taking AP computer science this year (however, I took a practice exam and got an 87, only need a 60to70 to pass, so no need to study for it too much) -- I was wondering if getting the SE 7 OCA and OCP would help me in trying to get a programming job. I looked around and most people have said online that an OCA/OCP are practically useless, but, at my age do they make me any more credible? More or less, what would you recommend to get a job in programming these days - or distinguish yourself from the crowd? I have enough time and dedication to learn another language, or anything really. Thank you very much.

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• What kind of website or coding is suitable and safe for an artist's website

  - by Dan S

  I have a web design project that is related to a singer, and I used Joomla for my previous project and designed good music websites. But for this project I cannot find a suitable template to edit and use. As the website is so simple and does not have any special functionality, I'm thinking about creating a website with just simple CSS, html and jQuery. I'm Good at them and can make a perfect look but I am not sure about the security. In Joomla I use different security plugins but do not know about a client-side scripting. So generally I need your ideas, about the following questions: - Is Joomla and generally CMS a good option for a music website? - How famous artists' website is base on? CMS or Client-side scripting? - Do you recommend to create it manually without using and CMS or template? - An do you suggest WordPress for this type of websites? (The website will have these pages: Biography, News, Music (with a music player), Photos, videos and contacts). That's it! Thank you for all your responds, I had a look at Joomla and the only template I chose is This One which seems very simple, and I am worry about module position, because it seems does not have any module position at all. I tried to contact the provider but did not get any respond. Does anyone know about its module position, I mean is there any way to find them? An is it possible to create a 2-3 module positions? Also I had a look at ThemeForest's WordPress templates and it has such a great template. I think WordPress is more active in creating artistic templates. But is it secure and professional to use this CMS for a singer who is kinda famous it his country? I am talking about a template like this. Share your opinions guys.

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• Do I need to uninstall Ubuntu after fresh Windows 7 installation?

  - by Dan

  I installed Ubuntu 12.04 from Windows 7 using Wubi. For reasons I won't elaborate here, I had to reinstall Windows 7. Now I want to uninstall Ubuntu. But there is no entry for ubuntu in Windows' Add/Remove Programs anymore. What I tried: running the Uninstall executable from Ubuntu's installation folder, which didn't do anything. delete the old installation folder No matter what I do Ubuntu continues to show up as a boot option together with Windows 7 whenever I start my machine. How do I completely get rid of the Ubuntu installation? Thanks.

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• Single page not appearing in Google Search

  - by Dan

  Description I have a static franchise website which has various sub pages each dedicated to an individual franchisee. For each franchisee the page, the only thing slightly similar between all of them are the page titles, they follow this structure: <title> Welcome to THE_COMPANY - PRODUCT_DESCRIPTION Services, THE_LOCATION </title> THE_COMPANY and PRODUCT_DESCRIPTION are the same across all franchisees, however THE_LOCATION changes depeding on where they are located in the UK. Each franchisee page has the following <meta /> tags: <meta name="DC.creator" content="user"/> <meta name="DC.format" content="text/html"/> <meta name="DC.language" content="en"/> <meta name="DC.date.modified" content="2014-01-23T11:22:31+00:00"/> <meta name="DC.date.created" content="2014-01-23T11:22:09+00:00"/> <meta name="DC.type" content="Page"/> <meta name="DC.distribution" content="Global"/> <meta name="robots" content="ALL"/> <meta name="distribution" content="Global"/> The main content on each franchisee page is completely different. The Problem There is one particular franchisee page, located in Area A.. Which will not appear in Google Search results at all. However every single other franchisee (if you Google Search for "THE_COMPANY, THE_LOCATION" is number 1). And if I do the same search on Bing, Yahoo or DuckDuckGo, the Area A franchisee is the first result on all of them. Has Google for some reason black listed one page on the site? What I Have Tried Ensuring the page is referenced in my sitemap.xml file 'Fetching as Google Bot' the link www.the_company.co.uk/areaa When that came back as OK I would submit to index Resubmitting the sitemap.xml file in Webmaster Tools Linking to the Area A page from another pages content For this I also waited about 3 weeks before checking again to give Google time to re-index Making a change to the page content and waiting another 2 / 3 weeks Removing the page completely and recreating it with an alternative URL The closest thing I have found to this issue is this StackOverflow question but this particular franchisee has existed for almost a year, it used to appear on Google searches however no longer does. I'm guessing the Panda update wasn't too happy with something on the page, but it hasn't effected anything else on the site and I am at a loss for things to try. I would greatly appreciate any information or thoughts as to what could have caused this Thanks. Update In line with Daniel Fukudas answer below, I have followed some of his steps but everything seems to check out alright: HTTP Headers HTTP/1.1 200 OK => Date => Tue, 25 Feb 2014 16:31:29 GMT Server => Zope/(2.12.16, python 2.6.6, linux2) ZServer/1.1 Content-Length => 40078 Expires => Sat, 01 Jan 2000 00:00:00 GMT Content-Type => text/html;charset=utf-8 Content-Language => en Vary => Accept-Encoding Connection => close Robots <meta /> tag: <meta name="robots" content="ALL"/> I have updated this <meta /> tag to read content="INDEX" instead now. robots.txt: User-agent: * Disallow: User-Agent: Googlebot Disallow: /*sendto_form$ Disallow: /*folder_factories$ Using site:THE_COMPANY.co.uk: Searching for 'AREA A site:THE_COMPANY.co.uk' does not return the page, but regardless of that searching just for site:THE_COMPANY.co.uk will not necessarily return every indexed page, or so I understand... Update It appears Google likes to drop pages every now and then from the index, despite my steps above, I left the site alone and the page appeared back in the SERPs by itself.

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• Producer-consumer pattern with consumer restrictions

  - by Dan

  I have a processing problem that I am thinking is a classic producer-consumer problem with the two added wrinkles that there may be a variable number of producers and there is the restriction that no more than one item per producer may be consumed at any one time. I will generally have 50-100 producers and as many consumers as CPU cores on the server. I want to maximize the throughput of the consumers while ensuring that there are never more than one work item in process from any single producer. This is more complicated than the classic producer-consumer problem which I think assumes a single producer and no restriction on which work items may be in progress at any one time. I think the problem of multiple producers is relatively easily solved by enqueuing all work items on a single work queue protected by a critical section. I think the restriction on simultaneously processing work items from any single producer is harder because I cannot think of any solution that does not require each consumer to notify some kind of work dispatcher that a particular work item has been completed so as to lift the restriction on work items from that producer. In other words, if Consumer2 has just completed WorkItem42 from Producer53, there needs to be some kind of callback or notification from Consumer2 to a work dispatcher to allow the work dispatcher to release the next work item from Producer53 to the next available consumer (whether Consumer2 or otherwise). Am I overlooking something simple here? Is there a known pattern for this problem? I would appreciate any pointers.

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• I'm stuck on User Defined Session destop environment

  - by Dan

  I just installed Ubuntu for the first time dual boot so I get to choose Ubuntu or windows. I then changed the setting where is doesn't ask for my password when booting up. I then installed Edubuntu desktop package. I then hit system and logged out that way i could be at the loggin screen that also lets you select the desktop environment. Edubuntu was not there but User defined session was so i clicked that thinking that might be Edubuntu and logged in. Now im totally stuck. Only walpaper on the screen as i realize now that is normal for user defined session but there is no log out button to change desktop environments now and since I set it to not ask for password at boot up there is no option to change it at start up. If i hit ctrl+alt+del it only lets you shutdown, restart, suspend, or hybernate.... no logg out. I have hit every key on the keybourd hoping something will pop up. I thought this must be a simple noob mistake that there must be endless artiles about this so did searches on google and forums and was shocked to find nothing about this. My next step unless someone can help is to uninstall and reinstall.

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• Algorithm for creating spheres?

  - by Dan the Man

  Does anyone have an algorithm for creating a sphere proceduraly with la amount of latitude lines, lo amount of longitude lines, and a radius of r? I need it to work with Unity, so the vertex positions need to be defined and then, the triangles defined via indexes (more info). EDIT I managed to get the code working in unity. But I think I might have done something wrong. When I turn up the detailLevel, All it does is add more vertices and polygons without moving them around. Did I forget something?

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• Synchronous Actions

  - by Dan Krasinski-Oracle

  Since the introduction of SMF, svcadm(1M) has had the ability to enable or disable a service instance and wait for that service instance to reach a final state.  With Oracle Solaris 11.2, we’ve expanded the set of administrative actions which can be invoked synchronously. Now all subcommands of svcadm(1M) have synchronous behavior. Let’s take a look at the new usage: Usage: svcadm [-v] [cmd [args ... ]] svcadm enable [-rt] [-s [-T timeout]] <service> ... enable and online service(s) svcadm disable [-t] [-s [-T timeout]] <service> ... disable and offline service(s) svcadm restart [-s [-T timeout]] <service> ... restart specified service(s) svcadm refresh [-s [-T timeout]] <service> ... re-read service configuration svcadm mark [-It] [-s [-T timeout]] <state> <service> ... set maintenance state svcadm clear [-s [-T timeout]] <service> ... clear maintenance state svcadm milestone [-d] [-s [-T timeout]] <milestone> advance to a service milestone svcadm delegate [-s] <restarter> <svc> ... delegate service to a restarter As you can see, each subcommand now has a ‘-s’ flag. That flag tells svcadm(1M) to wait for the subcommand to complete before returning. For enables, that means waiting until the instance is either ‘online’ or in the ‘maintenance’ state. For disable, the instance must reach the ‘disabled’ state. Other subcommands complete when: restart A restart is considered complete once the instance has gone offline after running the ‘stop’ method, and then has either returned to the ‘online’ state or has entered the ‘maintenance’ state. refresh If an instance is in the ‘online’ state, a refresh is considered complete once the ‘refresh’ method for the instance has finished. mark maintenance Marking an instance for maintenance completes when the instance has reached the ‘maintenance’ state. mark degraded Marking an instance as degraded completes when the instance has reached the ‘degraded’ state from the ‘online’ state. milestone A milestone transition can occur in one of two directions. Either the transition moves from a lower milestone to a higher one, or from a higher one to a lower one. When moving to a higher milestone, the transition is considered complete when the instance representing that milestone reaches the ‘online’ state. The transition to a lower milestone, on the other hand, completes only when all instances which are part of higher milestones have reached the ‘disabled’ state. That’s not the whole story. svcadm(1M) will also try to determine if the actions initiated by a particular subcommand cannot complete. Trying to enable an instance which does not have its dependencies satisfied, for example, will cause svcadm(1M) to terminate before that instance reaches the ‘online’ state. You’ll also notice the optional ‘-T’ flag which can be used in conjunction with the ‘-s’ flag. This flag sets a timeout, in seconds, after which svcadm gives up on waiting for the subcommand to complete and terminates. This is useful in many cases, but in particular when the start method for an instance has an infinite timeout but might get stuck waiting for some resource that may never become available. For the C-oriented, each of these administrative actions has a corresponding function in libscf(3SCF), with names like smf_enable_instance_synchronous(3SCF) and smf_restart_instance_synchronous(3SCF).  Take a look at smf_enable_instance_synchronous(3SCF) for details.

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• How to un-fullscreen an application on your secondary monitor in 11.10

  - by Dan Rempel

  Nvidia twinview wasn't working for me very well so I uninstalled it and started using the nouveau driver, since then my dual monitors are working properly. With 11.10 the panel has changed. It appears on my main monitor only, along with the unity bar. When I have an application full screened the panel acts as the file menu, along with max, min, and close options. However I'm noticing when I have something full screened on my secondary monitor (where there is no panel) I have no way of un-fullscreening it. The panel on the main monitor do not show any options when that window is selected. This is okay for some apps like my web browser that has these buttons in it anyway, but I fullscreened Banshee and now it's stuck there... Any idea on how to un-fullscreen something in this situation?

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• What is the difference between Callback<T> and Java 8's Supplier<T>?

  - by Dan Pantry

  I've been switching over to Java from C# after some recommendations from some over at CodeReview. So, when I was looking into LWJGL, one thing I remembered was that every call to Display must be executed on the same thread that the Display.create() method was invoked on. Remembering this, I whipped up a class that looks a bit like this. public class LwjglDisplayWindow implements DisplayWindow { private final static int TargetFramesPerSecond = 60; private final Scheduler _scheduler; public LwjglDisplayWindow(Scheduler displayScheduler, DisplayMode displayMode) throws LWJGLException { _scheduler = displayScheduler; Display.setDisplayMode(displayMode); Display.create(); } public void dispose() { Display.destroy(); } @Override public int getTargetFramesPerSecond() { return TargetFramesPerSecond; } @Override public Future<Boolean> isClosed() { return _scheduler.schedule(() -> Display.isCloseRequested()); } } While writing this class you'll notice that I created a method called isClosed() that returns a Future<Boolean>. This dispatches a function to my Scheduler interface (which is nothing more than a wrapper around an ScheduledExecutorService. While writing the schedule method on the Scheduler I noticed that I could either use a Supplier<T> argument or a Callable<T> argument to represent the function that is passed in. ScheduledExecutorService didn't contain an override for Supplier<T> but I noticed that the lambda expression () -> Display.isCloseRequested() is actually type compatible with both Callable<bool> and Supplier<bool>. My question is, is there a difference between those two, semantically or otherwise - and if so, what is it, so I can adhere to it?

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• How to create a thread in XNA for pathfinding?

  - by Dan

  I am trying to create a separate thread for my enemy's A* pathfinder which will give me a list of points to get to the player. I have placed the thread in the update method of my enemy. However this seems to cause jittering in the game every-time the thread is called. I have tried calling just the method and this works fine. Is there any way I can sort this out so that I can have the pathfinder on its own thread? Do I need to remove the thread start from the update and start it in the constructor? Is there any way this can work? Here is the code at the moment: bool running = false; bool threadstarted; System.Threading.Thread thread; public void update() { if (running == false && threadstarted == false) { thread = new System.Threading.Thread(PathThread); //thread.Priority = System.Threading.ThreadPriority.Lowest; thread.IsBackground = true; thread.Start(startandendobj); //PathThread(startandendobj); threadstarted = true; } } public void PathThread(object Startandend) { object[] Startandendarray = (object[])Startandend; Point startpoint = (Point)Startandendarray[0]; Point endpoint = (Point)Startandendarray[1]; bool runnable = true; // Path find from 255, 255 to 0,0 on the map foreach(Tile tile in Map) { if(tile.Color == Color.Red) { if (tile.Position.Contains(endpoint)) { runnable = false; } } } if(runnable == true) { running = true; Pathfinder p = new Pathfinder(Map); pathway = p.FindPath(startpoint, endpoint); running = false; threadstarted = false; } }

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• Google reverse an analytic

  - by Dan

  I am confused about what code must be executed to reverse a google analytic. I have the following code pasted within a test page: <body onLoad=”function()”> <script type="text/javascript"> var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-25305776-3']); _gaq.push(['_trackPageview']); _gaq.push(['_addTrans', '11455', // order ID - required '-42.38', // total - required '-2.38', // tax '-15.00' // shipping ]); _gaq.push(['_addItem', '11455', // order ID - necessary to associate item with transaction 'Evan Turner Turningpoint™ Basketball Pants', // product name '25.00', // unit price - required '-1' // quantity - required ]); _gaq.push(['_trackTrans']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); </script> Is this correct? Thanks!

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• stuck on "preparing..." when restoring from deja-dup backup

  - by Dan

  I'm trying to restore my deja-dup backup from a certain date. However during restore after selecting the date to restore from i get a "restoring... "preparing"..." window that just seems stuck there doing nothing forever (past 1/2 hour). There was a point when i was prompted for the "encryption password" but i don't remember it, so i just entered one. I never got any error if the password i entered was not accepted.

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• gnome-open raises this error when run from inside tmux

  - by dan

  The error I get is this: GConf Error: Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Error connecting: Connection refused) Failed to open bus: Failed to connect to socket /tmp/dbus-BYC0LHrEHk: Connection refused Any suggestions?

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• How would you code an AI engine to allow communication in any programming language?

  - by Tokyo Dan

  I developed a two-player iPhone board game. Computer players (AI) can either be local (in the game code) or remote running on a server. In the 2nd case, both client and server code are coded in Lua. On the server the actual AI code is separate from the TCP socket code and coroutine code (which spawns a separate instance of AI for each connecting client). I want to be able to further isolate the AI code so that that part can be a module coded by anyone in their language of choice. How can I do this? What tecniques/technology would enable communication between the Lua TCP socket/coroutine code and the AI module?

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• how do you remember programming related stuff?

  - by dan leadgy

  How do you remember programming related stuff? Did you get the feeling you did encounter the error you have now a few years ago and you could swear you knew the cause but now you forgot it? Did you work with the xsl's string parsing some time ago but now you can't remember exactly which are the string functions altogether from xsl and you have to start from scratch? Or perhaps you forget about some feature from Apache Commons like "filtering a collection by some predicate" that you surely used in the past. So how do you do it? I tried having a blog but when I develop apps, I never find the time to update the blog or write about my experiences. Also, using a wiki is a nice thing but then I found it difficult to keep a clean separation between them since many times I needed to change a blog post to add new information about that topic. This made me think that I actually should have put this topic in the wiki instead of the blog. Do you have any systems that help you remember about your programming experience? What's your setup?

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• What is this chargeback scam from eBooks bought on my website?

  - by Dan Friedman

  We have a scammer that is buying our e-Books and then performing chargebacks. Our e-Books don't have DRM, so if they wanted to resell them, they would only need to buy each book once. But instead, they keep buying the same books over and over again and then performing hundreds of chargebacks. We have created some additional rules in our fraud protection tools to block certain aspects, even though all the info looks legit, and are hopeful this will slow them down. But my question is: What is the scam? If they aren't getting any product and they only get chargebacks for something they already purchased, then they can't get additional money from the credit card company, so then what's their motivation?

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• Unable to access any ubuntu shares from android/windows clients

  - by dan

  I am running Ubuntu 11.04, and cant seem to access any of my shares. Here is the output from testparm-s : Load smb config files from /etc/samba/smb.conf rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384) Processing section "[printers]" Processing section "[CanonMG2100AIO]" Processing section "[FreeAgent Drive]" Loaded services file OK. WARNING: You have some share names that are longer than 12 characters. These may not be accessible to some older clients. (Eg. Windows9x, WindowsMe, and smbclient prior to Samba 3.0.) Server role: ROLE_STANDALONE [global] server string = %h server (Samba, Ubuntu) encrypt passwords = No obey pam restrictions = Yes pam password change = Yes passwd program = /usr/bin/passwd %u passwd chat = Enter\snew\s\spassword:* %n\n Retype\snew\s\spassword:* %n\n password\supdated\ssuccessfully . username map = /etc/samba/smbusers unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%m max log size = 1000 name resolve order = wins lmhosts host bcast dns proxy = No wins support = Yes usershare allow guests = Yes panic action = /usr/share/samba/panic-action %d [printers] comment = All Printers path = /var/spool/samba create mask = 0700 guest ok = Yes printable = Yes browseable = No [CanonMG2100AIO] comment = Printer Drivers path = /var/lib/samba/printers read only = No guest ok = Yes [FreeAgent Drive] path = /media/FreeAgent Drive read only = No guest ok = Yes smbtree: Server requested plaintext password but 'client plaintext auth' is disabled anonymous failed session setup with NT_STATUS_INVALID_PARAMETER Server requested plaintext password but 'client plaintext auth' is disabled anonymous failed session setup with NT_STATUS_INVALID_PARAMETER and hostname: dekstop I know the spelling of desktop is incorrect. it was a duh moment. Any help would be greatly appreciated.

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• Move a 2D square on y axis on android GLES2

  - by Dan

  I am trying to create a simple game for android, to start i am trying to make the square move down the y axis but the way i am doing it dosent move the square at all and i cant find any tutorials for GLES20 The on draw frame function in the render class updates the users position based on accleration dew to gravity, gets the transform matrix from the user class which is used to move the square down, then the program draws it. All that happens is that the square is drawn, no motion happens public void onDrawFrame(GL10 gl) { user.update(0.0, phy.AccelerationDewToGravity); GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT); // Re draws black background GLES20.glVertexAttribPointer(maPositionHandle, 3, GLES20.GL_FLOAT, false, 12, user.SquareVB);//triangleVB); GLES20.glEnableVertexAttribArray(maPositionHandle); GLES20.glUniformMatrix4fv(maPositionHandle, 1, false, user.getTransformMatrix(), 0); GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4); } The update function in the player class is public void update(double vh, double vv) { Vh += vh; // Increase horrzontal Velosity Vv += vv; // Increase vertical velosity //Matrix.translateM(mMMatrix, 0, (int)Vh, (int)Vv, 0); Matrix.translateM(mMMatrix, 0, mMMatrix, 0, (float)Vh, (float)Vv, 0); }

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• Internet stopped working after aircrack install (can still connect to my router). Suggestions?

  - by Dan

  I'm sure I did something dumb during the install for aircrack, but I have no clue what. Like I said, I can connect to my router (not trying to crack, simply logging into it), I just can't get internet access. To make this more interesting, the machine is dual booted and when I log into Windows I have zero issues. I feel like some driver may have been messed up in the process, but I'm not sure if that's a reasonable assumption or how exactly to check that. Also, can't revert to backup as there are none. Suggestions on how to trouble-shoot would be appreciated. EDIT: Hard-wiring to the wall I can get internet access on the Ubuntu side... PS- I know this is a stretch as far as fitting the Ubuntu section, but no other stackoverflow sites seemed to fit better.

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• What are the so-called "levels" of understanding multithreading?

  - by Dan Tao

  I seem to remember reading somewhere some list of 4 "levels" of understanding multithreading. This may have been in a formal publication, or it may have been in an extremely informal context (even like in a Stack Overflow question, for example). Unfortunately I don't remember who referred to them or precisely what they were. I seem to recall that they were roughly like: Total ignorance Awareness mixed with incompetence Relative competence mixed with fear True understanding My intention is to refer to these levels in a blog post I'm writing, with a reference; but I can't for the life of me remember where I first encountered this list. Brief Google searches have proved unfruitful.

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• Confusion about git; how to undo?

  - by dan

  I wanted to install some source code that was on git. Don't really know what that means, I've never used git before, but I figured it was time to learn so, I first installed git. Next I tried to clone the git directory of the software I want to install. I got a message saying "the authenticity of can't be established". I went ahead and ended up with another message saying warning such and such will be added to known hosts. I went ahead and it said something about hanging up on the connection. After searching the internet for a while I realized I didn't need git to install the software but now I have it installed and have added some host to some file or another. I'm concerned I've created some security issues I need to fix. Can anyone help me undo what I've done, or better understand what I've done. Did adding a git project open up my system? Beyond that can anyone tell me how git works. Everything I've found assumes I know stuff that I don't yet. Thanks

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• As a developer, how do I learn sales? [closed]

  - by Dan Abramov

  I quit the company I was working for to pursuit an opportunity as a startup, and I believe in our product. I'm sure it's going to be great if we attract some customers first to keep going. (I don't want funding.) Our product is targeted at private schools and courses, and helps organize the mess other LMSs introduce. The problem is, our team is basically just me and I have very little idea about sales and marketing. I can do reasonably good copywriting but I'm sure I can do better—and being nervous or too techy in a real world conversation with the client doesn't help. I want to get better, in fact, a lot better at negotiating with clients and pitching my product. I did look for some “sales articles” on the web, and a lot of what I found is plain bullshit on SEO-engineered websites promoting books or $5000 courses. What I need instead is a developer's perspective on how to sale a product you think is great. What are typical programmer's mistakes and misconceptions about sales, and how to avoid them? How do you evolve into a reasonably great salesman? I can't believe it's in the mindset and unlearnable. Your own experience, combined with great articles available on the web is most welcome. To Future Readers The question got closed because it is not a good fit for this site. I found some helpful tips in a similar question asked on a sister StackExchange site about startups: I'm a terrible salesperson. What can I do about it?

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• Unity panel, and application functionality

  - by Dan

  From the Unity panel, left-clicking on an application that has multiple instances open displays the Spread Mode, but left-clicking on a solitary application does absolutely nothing. Personally, whenever I left-click on an open application, I expect it to either minimize or maximize, and I'd like to know if there's a way to get that functionality from Unity when left-clicking on a solitary application. I'm currently running Ubuntu 12.10. Thanks.

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