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  • What are the relative merits for implementing an Erlang-style "Continuation" pattern in C#

    - by JoeGeeky
    What are the relative merits (or demerits) for implementing an Erlang-style "Continuation" pattern in C#. I'm working on a project that has a large number of Lowest priority threads and I'm wondering if my approach may be all wrong. It would seem there is a reasonable upper limit to the number of long-running threads that any one Process 'should' spawn. With that said, I'm not sure what would signal the tipping-point for too many thread or when alternate patterns such as "Continuation" would be more suitable. In this case, many of the threads do a small amount of work and then sleep until woken to go again (Ex. Heartbeat, purge caches, etc...). This continues for the life of the Process.

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  • T-SQL User-Defined Functions: the good, the bad, and the ugly (part 1)

    - by Hugo Kornelis
    So you thought that encapsulating code in user-defined functions for easy reuse is a good idea? Think again! SQL Server supports three types of user-defined functions. Only one of them qualifies as good. The other two – well, the title says it all, doesn’t it? The bad: scalar functions A scalar user-defined function (UDF) is very much like a stored procedure, except that it always returns a single value of a predefined data type – and because of that property, it isn’t invoked with an EXECUTE statement,...(read more)

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  • Mix metrics for May 11, 2010

    - by tim.bonnemann
    It's been a while, sorry about not keeping up. Here once again are our latest community metrics. Any questions or suggestions, please leave a comment. Thanks! Registered Mix users (weekly growth) 62,937 (+0.5%) Active users (percent of total) Last 30 days: 3,928 (6.2%) Last 60 days: 7,850 (12.5%) Last 90 days: 11,875 (18.9%) Traffic (30-day) Visits: 11,623 Page views: 57,846 Twitter Followers: 3,311 List mentions: 193 User-generated content (30-day) New ideas: 31 New questions: 72 New comments: 373 Groups There are currently 1,421 Mix groups (requires login).

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  • How do I get wireless to work on a Dell Mini 1018 with Realtek RTL 8188CE Network Adapter?

    - by Laurence Nagel
    My Dell Mini 1018 used to work fine with Ubuntu 12.04 with no problems connecting with the wireless card. Then I made the big mistake of attempting to disable WiFi by right-clicking on the wireless applet and un-checking "Enable Wireless." Since then, I cannot get wireless working again. The wireless applet reports that "wireless is disabled by hardware switch" but there is no hardware switch on this computer. Issuing a rfkill list yields the following: 0: dell-wifi: Wireless LAN Soft blocked: yes Hard block: yes 1: phy0: Wireless LAN Soft blocked: no Hard blocked: yes I'm in way over my head, and my computer is now useless. Help!!!

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  • How to enable Mic in Wine (pulseaudio)

    - by Postadelmaga
    I'm not able to make mic work with wine 1.5 I found some suggestions but they don't seem to work: -Disable winepulse.drv (aka: PulseAudio): "A1: Go to winecfg, in the tab 'libraries', enter 'winepulse.drv' in the box and click on add, click yes on the warning. Select winepulse.drv and change load order to 'disabled'. Now try to trigger your bug again, if it was a winepulse bug it shouldn't trigger any more. A2 (easier and preferred): From 1.5.3 onward, launch your program with WINENOPULSE=1 wine program.exe to temporarily disable winepulse for that program." reference: http://ubuntuforums.org/showthread.php?t=1960599

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  • 3D Display Issue When Using Latest Java Runtime Versions - Patch now available...

    - by [email protected]
    Typically I focus my blog posts on Support process topics, and reserve most of the technical topics for the Support newsletter. This topic, however, warrants a quick mention in the blog since I know it's been affecting many users recently. For customers using the Client/Server Deployment of AutoVue, users that had upgraded their client Java Runtime Environment (JRE) to version 1.6.0_19 or later suddenly noticed that their 3D files were opening blank in AutoVue. This issue was due to a change in JRE version 1.6.0_19, and the AutoVue team now offers a patch to address the issue in AutoVue version 20.0.0. The patch number is 10268316, is available through the My Oracle Support portal, and is described further in KM Note 1104821.1. We'll mention it again in our next Support newsletter, and the AutoVue team will target to roll the same fix into the next available release of the product.

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  • Sound is not working correctly on Ubuntu 12.04

    - by Jeggy
    I know this is my own fault. But what i did was this first i wrote this command 'sudo apt-get remove pulseaudio' and then i wrote again 'sudo apt-get install pulseaudio' and now the sound doesn't work properly And the Indicator doesn't work either, it's just grayed out. The shortcuts are not working either. Alsamixer is working, and this is the only way i change change the volume at the moment: jeggy@jeggy-XPS:~$ cat /proc/asound/cards 0 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xf1c00000 irq 52 jeggy@jeggy-XPS:~$ aplay -l **** List of PLAYBACK Hardware Devices **** ALSA lib conf.c:1686:(snd_config_load1) _toplevel_:11:0:Unexpected end of file ALSA lib conf.c:3406:(config_file_open) /etc/asound.conf may be old or corrupted: consider to remove or fix it /usr/bin/pulseaudio: error while loading shared libraries: libpulsecommon-1.1.so: cannot open shared object file: No such file or directory card 0: PCH [HDA Intel PCH], device 0: ALC665 Analog [ALC665 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 1: ALC665 Digital [ALC665 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 VLC sound is not working, am getting this error:

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  • How do i set CTRL not to show where the pointer is?

    - by Lewis Goddard
    After recently re-installing, i went through every System Setting and choose exactly how i wanted everthing to be. Except one thing. I'd never seen the Show Cursor on CTRL value before, and wanted to know what it was like. After a while it was simply annoying, whenever i paste of cut in chrome it takes the focus off of the text before i can press V. I have been through eveything in System Settings and can't find it again to disable it. How do i set CTRL not to pulse around the cursor? I will be happy with directions in System Settings, Ubuntu Tweak, or GConf.

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  • Fails to boot after upgrade, stuck on winbind package

    - by Praetorian
    I started the upgrade from 11.04 to 11.10 last night. Once it got the installing packages part I left the computer unattended the rest of the night. When I checked it this morning the screen was blank and I couldn't get it to turn on. So I cycled power, and now I get the "Ubuntu 11.10" screen with the dots underneath, but then it gets to a blank screen and nothing more. I can get to the command line in recovery mode; here's a list of the things I've tried so far sudo apt-get update - the very first repository it checked sat at 0% for a long time (network cable is plugged in), so I cancelled with Ctrl+C Thought it might be a problem with display drivers, so I tried sudo apt-get install nvidia-glx - this gave me an error saying dpkg has been interrupted, manually run sudo dpkg --configure -a sudo dpkg --configure -a this installed / updated a bunch of stuff but got stuck at Starting Winbind daemon winbind Restarted and tried sudo dpkg --configure -a again but it gets stuck at same Windbind step What else can I do to fix this problem?

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  • How to pay for servers without ads ?

    - by Matthieu
    Hi everyone ! I have a website whose goal is to provide a free educational service (like wikipedia does, not on the same scale obviously). I wonder how I will continue to pay for the servers when I reach high traffic. I don't want to use any ads or sponsor things, because this is not the goal of the website (just like wikipedia once again). Does "please donate" works ? If no, is there any alternative to a "private/premium not free" part in the website ? Thanks

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  • How do I install third-party rhythmbox plugins?

    - by fossfreedom
    Now that the dust has settled and Rhythmbox has become (again) the default music-media player in 12.04, I'm interested in extending its functionality. For example, the default lyric plugin does not work for me and there doesn't appear to be an sound-equalizer by default. Having done a search, I came across the Gnome-website that lists a number of third-party plugins, some-of which I wish to install which can resolve the above. However, there doesn't appear to be .deb packages or a repository containing these plugins. Instead there are links to source-code websites such as GitHub and others. So, I'm confused - I don't know which plugins works in 12.04 Rhythmbox and I'm not sure how to install these. Help please?

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  • Wireless connection shows up but can't connect to internet with an Intel WiFi Link 5100

    - by Eddy
    I'm using an Asus G50V and I'm completely new to ubuntu. I just installed it and can connect to the internet with a wired connection and through wireless from my windows vista that I installed wubi on, and I can connect to my wireless network, but I can't actually connect to the internet through my wireless network. Thanks in advance. Network controller is an Intel Corporation WiFi Link 5100 according to lspci if that helps Also, the connection somehow started working after I decided to unplug my ethernet cable for the third time and headed upstairs after giving up for the day.. not sure how it happened, but after restarting, the connection stopped working again.. Wifi works on 11.10, but stops working when I upgrade back to 12.04..

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  • HP Pavilion g6 1190sm laptop has overheat/hibernation/graphics issues

    - by Jan
    Every time I reboot or shutdown my laptop, while the laptop is booting again I get a screen (before loading the OS) that HP discovered overheating and system went into hibernation. But the point is that the laptop is not overheating nor going into hibernation by itself. Also, because of the hybrid graphics card I cannot install additional drivers. Desktop resolution and all works perfectly but I cannot use Unity 3D. Also, OpenGL doesn't work as it should (with Cairo Dock). As I've read some posts, people say that vgaswitcheroo doesn't work on 12.04 so I haven't tried it.

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  • Keyboard shortcuts don't work continuously

    - by T. K.
    First I had the problem of the keyboard layout resetting itself on each reboot from DE (german) to EN (us). I followed the advice of using dconf in order to make the DE layout my personal default (see Keyboard layout switches to English each time I reboot). However, after that, my shortcuts didn't work properly anymore. In Firefox, Kile etc. everything works fine while in Nautilus, copying/erasing/pasting is impossible even when I change the keyboard layout back to En (us). Also, I'm not even able to select multiple items using the cursor in Nautilus while every acts normal on the desktop. It's quite confusing. I've read about a similar bug (see https://bugs.launchpad.net/unity/+bug/1226962) but since German is a latin language there is no appropriate solution given for my problem. Any help is really appreciated here. Edit: The third reboot resolved the problem so the shortcuts finally work in Nautilus again. Still, selecting multiple objects using the cursor isn't possible.

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  • How to prevent WLAN connection from dropping permanently on a Fritz USB WLAN N stick?

    - by Chris
    I have a desktop with a Fritz USB WLAN N stick and tried Ubuntu 12.04. Installation went fine and WLAN is working. However, connection drops permanent. Reconnecting manually fixes it but after a few minutes it drops again. It's connected to a Vodafone 802 box with WLAN N fix set. It seems that it works when I switch off N mode. But I need to test. Can someone confirm this issue or is there another solution? I have another machine with 12.04 (HP 625 laptop) running where connection is stable.

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  • Xubuntu is not seeing my Win8 OS in the installer

    - by Logan Serman
    When I install Xubuntu, I get the message "This computer currently has no detected operating systems. What would you like to do?". I just did a fresh install of Win8 yesterday, and I guess it used EFI because I have a 104MB partition that is of type 'efi'. Is there any way to install Xubuntu next to Win8, and avoid any boot problems? Or can I switch Win8 to BIOS from EFI, without having to re-install Windows? I went through a ton of boot problems and re-installing yesterday... I really don't want to have to do it again.

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  • Xcode Video From UITableView [migrated]

    - by Luis Felipe Beltran
    I have created different UITableViews. Each of these are dynamic tables that contain NSarrays of words. Right now When a cell is tabbed it takes the user to another View (simple view controller) that has a label and a UIImageview that displays a picture. My problem is that I also want to show video. Some of these words need to show pictures, and others need to show video. I have shown video before but I have done it using a button. I need help! I would appreciate if you guys could help here. Again, Im trying to show a video from a UITableView after the user tabs a cell. (I have many videos not just one, so dynamically would be better if possible)

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  • fix a broken ubuntu installation from pendrive

    - by interstar
    Something went wrong in the upgrade of my Ubuntu 13.04 to 13.10 The upgrade basically crashed halfway through. On booting I was thrown into a maintainence screen. I found some online instructions for fixing with the package manager ... Which seemed to do a lot of setting up. But then crashed saying package is in a bad inconsistent state. Now I'm in a position where Ubuntu starts again, but goes into a low-res screen and there's no WiFi. I have no Ethernet cable connection but I did download the 13.10 iso on another machine and put it on a pen drive. So I'd like to know there's a way of asking the machine from inside Ubuntu to redo its upgrade from the data on the pendrive rather than WiFi. Is this possible? Cheers Phil

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  • The Sound of Two Toilets Flushing: Constructive Criticism for Virgin Atlantic Complaints Department

    - by Geertjan
    I recently had the experience of flying from London to Johannesburg and back with Virgin Atlantic. The good news was that it was the cheapest flight available and that the take off and landing were absolutely perfect. Hence I really have no reason to complain. Instead, I'd like to offer some constructive criticism which hopefully Richard Branson will find sometime while googling his name. Or maybe someone from the Virgin Atlantic Complaints Department will find it, whatever, just want to put this information out there. Arrangement of restroom facilities. Maybe next time you design an airplane, consider not putting your toilets at a right angle right next to your rows of seats. Being able to reach, without even needing to stretch your arm, from your seat to close, yet again, a toilet door that someone, someone obviously sitting very far from the toilets, carelessly forgot to close is not an indicator of quality interior design. Have you noticed how all other airplanes have their toilets in a cubicle separated from the rows of seats? On those airplanes, people sitting in the seats near the toilets are not constantly being woken up throughout the night whenever someone enters/exits the toilet, whenever the light in the toilet is suddenly switched on, and whenever one of the toilets flushes. Bonus points for Virgin Atlantic passengers in the seats adjoining the toilets is when multiple toilets are flushed simultaneously and multiple passengers enter/exit them at the same time, a bit like an unasked for low budget musical of suddenly illuminated grumpy people in crumpled clothes. What joy that brings at 3 AM is hard to describe. Seats with extra leg room. You know how other airplanes have the seats with the extra leg room? You know what those seats tend to have? Extra leg room. It's really interesting how Virgin Atlantic's seats with extra leg room actually have no extra leg room at all. It should have been a give away, the fact that these special seats are found in the same rows as the standard seats, rather than on the cusp of real glory which is where most airlines put their extra leg room seats, with the only actual difference being that they have a slightly different color. Had you called them "seats with a different color" (i.e., almost not quite green, rather than something vaguely hinting at blue), at least I'd have known what I was getting. Picture the joy at 3 AM, rudely awakened from nightmarish slumber, partly grateful to have been released from a grayish dream of faceless zombies resembling one or two of those in a recent toilet line, by multiple adjoining toilets flushing simultaneously, while you're sitting in a seat with extra leg room that has exactly as much leg room as the seats in neighboring rows. You then have a choice of things to be sincerely annoyed about. Food from the '80's. In the '80's, airplane food came in soggy containers and even breakfast, the most important meal of the day, was a sad heap of vaguely gray colors. The culinary highlight tended to be a squashed tomato, which must have been mashed to a pulp with a brick prior to being regurgitated by a small furry animal, and there was also always a piece of immensely horrid pumpkin, as well as a slice of spongy something you'd never seen before. Sausages and mash at 6 AM on an airplane was always a heavy lump of horribleness. Thankfully, all airlines throughout the world changed from this puke inducing strategy around 1987 sometime. Not Virgin Atlantic, of course. The fatty sausages and mash are still there, bringing you flashbacks to Duran Duran, which is what you were listening to (on your walkman) the last time you saw it in an airplane. Even the golden oldie "squashed tomato attached by slime to three wet peas" is on the menu. How wonderful to have all this in a cramped seat with a long row of early morning bleariness lined up for the toilets, right at your side, bumping into your elbow, groggily, one by one, one after another, more and more, fumble-open-door-silence-flush-fumble-open-door, and on and on, while you tentatively push your fork through a soggy pile of colorless mush, fighting the urge to throw up on the stinky socks of whatever nightmarish zombie is bumping into your elbow at the time. But, then again, the plane landed without a hitch, in fact, extremely smoothly, so I'm certainly not blaming the pilots.

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  • How to make browser offer "remember password"

    - by Alois Mahdal
    What properties login form needs to have to trigger "remember password" for all (or most) browsers? Background: For years I have been using Opera, and the rule has been that almost anything that looks like login form triggers this feature. Now I'm exploring other browsers, and surprisingly find that one of login forms I visit most often, Roundcube login page, does not trigger this feature neither in Chromium nor Firefox (tried various versions and page setups of RC). Since it's on my VPS, I could patch it up and eventually even send that to RC development team, but I have the unnerving feeling that this must have been solved over and over, and it's just me being blind or something. So again: is there any consensus between browser developer as to when this featue should be triggered? Is there a best practice for webmasters to tell the browser "this is the login page"? Or are all browsers doing their own heuristics?

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  • Merge home directory after fresh installation with existing (Gentoo) home

    - by jhwist
    I reinstalled my desktop machine with Ubuntu 10.10., coming from Gentoo where I used XFCE. My home is usually NFS-mounted from a server. During the install I let the installer set up my user, but of course my NFS-home wasn't mounted then; I have a regular /home/user now. If I mv /home /home.old and mount my NFS-home to /home instead, I cannot login because Gnome complains about some config-files (sorry, no exact error message as there is no way to copy&paste this). Which of my /home.old/user directories do I have to copy over to my NFS-home so that Gnome is happy again?

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  • OpenSSL installed, but Ruby unable to require it

    - by uomoinverde
    I'm trying to setup github-pages on my Ubuntu laptop, and following the guide provided by Github I have to install the bundler package; giving the command ~$ gem install bundler returns me this error. ERROR: While executing gem ... (Gem::Exception) Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources Then I have installed OpenSSL, launched the command to update software and stuff and tried again to install bundler, but the error kept showing. How can I fix this? Is there any specific command to rebuild ruby making it aware about the fact that openSSL is now installed?

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  • How to reinstall many removed packages at once?

    - by Logan
    I used sudo apt-get remove python command and accidently removed a bunch of packages that were required. I logged in via command line and installed ubuntu-desktop again but there are other packages that are missing, and I'm looking for a way to easily reinstall those removed packages. Since there's the log at software-center I wanted to ask what the easiest way might be to roll back changes or extract the removed packages list from the software center... note: I typed sudo apt-get install .... .... ... ... for about two dozen of those removed programs in that list, but when I pressed enter it didn't install any of them because some package names couldn't be found. The programs were removed at the same date.

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  • Can't Enter Password in Recovery Mode

    - by Mike Lentini
    When I go into recovery mode to get to the command line, I enter "telinit 3" to drop out of root. This works on my desktop, but on my laptop it asks for my username and password, then I hit enter and the first letter of my password appears and it doesn't log me in. It then proceeds to ask me for my username and password again, and the issue continues. Am I doing something wrong? Is this a known issue with a solution? EDIT: Worked around this by going into /etc/default/grub and setting it to boot in text mode. Still would like a solution for this though.

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  • Find the latest file by modified date

    - by Rich
    If I want to find the latest file (mtime) in a (big) directory containing subdirectories, how would I do it? Lots of posts I've found suggest some variation of ls -lt | head (amusingly, many suggest ls -ltr | tail which is the same but less efficient) which is fine unless you have subdirectories (I do). Then again, you could find . -type f -exec ls -lt \{\} \+ | head which will definitely do the trick for as many files as can be specified by one command, i.e. if you have a big directory, -exec...\+ will issue separate commands; therefore each group will be sorted by ls within itself but not over the total set; the head will therefore pick up the lastest entry of the first batch. Any answers?

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