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Articles indexed in July 2012

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• Is my first employer expecting too much?

  - by priyank patel

  This is my first job as a programmer. I am working using the followig technologies: ASP.NET C# HTML CSS Javascript JQuery I work for a firm which develops software for small banking firms. Currently they have their software running in 100 firms. Their software is developed in Visual Fox Pro. I was hired to develop an online version of this software. I am the only developer. My boss is another developer, the only other developer in the firm. Therefore, my employer has a total of two developers. My boss does not have any experience with .NET development. I have been working on this project for 8 months. The progress is there, but has been very slow. I try my best to do what my boss asks. But the project just seems too ambitious for me. The company has not done have any planning for the project. They just ask me to develop what their older software provides. So I have to deal with front end, back end, review code, design architecture, and more. I have decided to give my best. I try a lot. But the project sometimes just seems to be overwhelming. Question: Is it normal for a beginner programmer to be in this place? Are my employers just expecting too much of a new programmer? As a programmer, am I lacking skills one needs to deal with this? I always feel the need to work in at least a small team, if not big one. I am just not able judge my condition. Also I am paid very low salary. I do work on Saturday as well. Please, help to clarify my judgment. Any suggestions are welcome.

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• Debuild fails to make package for bluelog-1.04

  - by Dean Howell

  When trying to build a package for bluelog, Debuild give several errors. In the past, I've used checkinstall to quickly build crude packages. I am now trying to do it the right way and upload to a PPA. Bluelog can be found here: http://www.digifail.com/software/bluelog.shtml Here is the output from debuild; dpkg-buildpackage -rfakeroot -D -us -uc dpkg-buildpackage: export CFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security dpkg-buildpackage: export CPPFLAGS from dpkg-buildflags (origin: vendor): -D_FORTIFY_SOURCE=2 dpkg-buildpackage: export CXXFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security dpkg-buildpackage: export FFLAGS from dpkg-buildflags (origin: vendor): -g -O2 dpkg-buildpackage: export LDFLAGS from dpkg-buildflags (origin: vendor): -Wl,-Bsymbolic-functions -Wl,-z,relro dpkg-buildpackage: source package bluelog dpkg-buildpackage: source version 1.0.4-0ubuntu1 dpkg-buildpackage: source changed by Dean Howell <dean@unknown> dpkg-source --before-build bluelog dpkg-buildpackage: host architecture amd64 fakeroot debian/rules clean dh clean dh_testdir dh_auto_clean make[1]: Entering directory `/home/dean/Launchpad Builds/bluelog/bluelog' rm -rf bluelog www/cgi-bin/* *.o *.txt *.log *.gz *.cgi make[1]: Leaving directory `/home/dean/Launchpad Builds/bluelog/bluelog' dh_clean dpkg-source -b bluelog dpkg-source: warning: Version number suggests Ubuntu changes, but Maintainer: does not have Ubuntu address dpkg-source: warning: Version number suggests Ubuntu changes, but there is no XSBC-Original-Maintainer field dpkg-source: info: using source format `3.0 (quilt)' dpkg-source: info: building bluelog using existing ./bluelog_1.0.4.orig.tar.gz dpkg-source: error: cannot represent change to bluelog/Builds/bluelog/bluelog/debian/bluelog/usr/bin/bluelog: binary file contents changed dpkg-source: error: add Builds/bluelog/bluelog/debian/bluelog/usr/bin/bluelog in debian/source/include-binaries if you want to store the modified binary in the debian tarball dpkg-source: error: unrepresentable changes to source dpkg-buildpackage: error: dpkg-source -b bluelog gave error exit status 2

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• Unable to stop TOSHIBA TransMemory

  - by user66498

  I have a USB,when I choose safety remove, occur this error message.How to solve the problem? Unable to stop TOSHIBA TransMemory Error detaching: helper exited with exit code 1: Detaching device /dev/sdb USB device: /sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2) SYNCHRONIZE CACHE: synchronize cache(10): Fixed format, current; Sense key: Key=9 Additional sense: Logical unit not ready, cause not reportable Info fld=0x0 [0] FAILED: No such file or directory (Continuing despite SYNCHRONIZE CACHE failure.) STOP UNIT: start stop unit: transport: Host_status=0x07 [DID_ERROR] Driver_status=0x00 [DRIVER_OK, SUGGEST_OK] FAILED: No such file or directory

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• Why is my machine unable to mount my SMB drives ("CIFS VFS: Error connecting to socket. Aborting operation", return code -115)?

  - by downbeat

  I have a machine running Precise (12.04 x64), and I cannot mount my SMB drives (I have 3, we'll call them public, private and download). It used to work (a week or two ago) and I didn't touch fstab! The machine hosting the shares is a commercial NAS, and I'm not seeing anything that would indicate it's an issue with the NAS. I have an older machine which I updated to Precise at the same time (both fresh installed, not dist-upgrade), so should have a very similar configuration. It is not having any problems. I am not having problems on windows machines/partitions either, only one of my Precise machines. The two machines are using identical entries in fstab and identical /etc/samba/smb.conf files. I don't think I've ever changed smb.conf (has never mattered before). My fstab entries all basically look like this: //10.1.1.111/public /media/public cifs credentials=/home/downbeat/.credentials,iocharset=utf8,uid=downbeat,gid=downbeat,file_mode=0644,dir_mode=0755 0 0 Here's the dmesg output on boot: [ 51.162198] CIFS VFS: Error connecting to socket. Aborting operation [ 51.162369] CIFS VFS: cifs_mount failed w/return code = -115 [ 51.194106] CIFS VFS: Error connecting to socket. Aborting operation [ 51.194250] CIFS VFS: cifs_mount failed w/return code = -115 [ 51.198120] CIFS VFS: Error connecting to socket. Aborting operation [ 51.198243] CIFS VFS: cifs_mount failed w/return code = -115 There are no other errors I see in the dmesg output. Originally when I ran 'testparm -s', the output contained these lines ERROR: lock directory /var/run/samba does not exist ERROR: pid directory /var/run/samba does not exist Here's the samba related programs I have installed: $ dpkg --list|grep -i samba ii libpam-winbind 2:3.6.3-2ubuntu2.3 Samba nameservice and authentication integration plugins ii libwbclient0 2:3.6.3-2ubuntu2.3 Samba winbind client library ii nautilus-share 0.7.3-1ubuntu2 Nautilus extension to share folder using Samba ii python-smbc 1.0.13-0ubuntu1 Python bindings for Samba clients (libsmbclient) ii samba-common 2:3.6.3-2ubuntu2.3 common files used by both the Samba server and client ii samba-common-bin 2:3.6.3-2ubuntu2.3 common files used by both the Samba server and client ii winbind 2:3.6.3-2ubuntu2.3 Samba nameservice integration server $ dpkg --list|grep -i smb ii dmidecode 2.11-4 SMBIOS/DMI table decoder ii libsmbclient 2:3.6.3-2ubuntu2.3 shared library for communication with SMB/CIFS servers ii python-smbc 1.0.13-0ubuntu1 Python bindings for Samba clients (libsmbclient) ii smbclient 2:3.6.3-2ubuntu2.3 command-line SMB/CIFS clients for Unix ii smbfs 2:5.1-1ubuntu1 Common Internet File System utilities - compatibility package $ dpkg --list|grep -i cifs ii cifs-utils 2:5.1-1ubuntu1 Common Internet File System utilities ii libsmbclient 2:3.6.3-2ubuntu2.3 shared library for communication with SMB/CIFS servers ii smbclient 2:3.6.3-2ubuntu2.3 command-line SMB/CIFS clients for Unix I originally noticed that my other machine had "libpam-winbind" and "nautilus-share" installed and the machine with the issue did not. Installing those two packages solved my errors with 'testparm -s', but did not fix my issue. Finally, I tried to purge and reinstall these packages smbclient smbfs cifs-utils samba-common samba-common-bin Still no luck. Again, it used to work; now it doesn't. Very similarly configured machine works (but some packages are out of date on the working machine). The NAS has only one interface/IP address, nmblookup works to find it's IP from it's hostname (from the machine with the issue) and it responds to a ping. Please any help would be great. I've been searching on AskUbuntu, SuperUser, ubuntuforums and plain old search engines for a week now and it's driving me crazy!

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• g++ cannot find include files (qt3)

  - by Allan

  allan@allan-VirtualBox:~/blackjack_for_the_hopelessly_luckless$ make g++ -c -pipe -g -Wall -W -O2 -D_REENTRANT -DQT_NO_DEBUG -DQT_THREAD_SUPPORT -DQT_SHARED -DQT_TABLET_SUPPORT -I/usr/share/qt3/mkspecs/default -I. -I. -I/usr/include/qt3 -o advicewindow.o advicewindow.cpp advicewindow.cpp:32:19: fatal error: QWidget: No such file or directory compilation terminated. make: *** [advicewindow.o] Error 1 allan@allan-VirtualBox:~/blackjack_for_the_hopelessly_luckless$ qt3 was installed using apt-get. Header files are located in /usr/include/qt3/ Is there a g++ config file or something I need to update? I'm new to compiling from source and not sure what to do. Makefile was created using Qmake from project file. Files in include directory are all lower case, should I change the code in advicewindow.cpp to qwidget.h? Any help appreciated. Thanks.

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• Unwanted application icons showing on unity taskbar

  - by shaneo

  I installed my Ubuntu 12.04 desktop after a dependency loop hell. After I re-installed the Unity panel shows all application icons whenever the app is loaded. For example I can now always see VMware and X-Chat where on every previous install these icons never showed no matter how much I wanted them too sometimes. These indicators are starting to fill up my taskbar and was wondering how to make them go away. For example I want Thunderbird, Empathy and X-Chat to be able to be closed to the messaging menu like they did in all my other previous installs. Also I have X-Chat indicator installed but it will not allow me to close to messaging menu - I have to have the indicator icon enabled in order to close it. Any assistance in these issues would be greatly appreciated.

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• My ubuntu 11.10 gets weird lately

  - by The questioner

  I have quite a lot problems lately(about 2 weeks) running Ubuntu 11.10. First, flash playback in chrome hangs and lags all the time. While in Firefox is better, but still lags. Playing video files in the preinstalled Movie Player lags too. Second, I've turned automatic on and in some occasions, after I switched the computer on and successfully loaded the desktop, however, in just a minute or so, the screen just got black out and directed me back to the login page. I thinks there are bugs, please tell me how to correct those. Sysinfo: CPU: i5-2400 MB: GA H61M D2P B3 (no video card) Drive: Intel 320 40GB Thanks. p.s. should I upgrade to 12.04??

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• Can't disable giant cursors (from accessibility mode)

  - by jackweirdy

  I've just installed ubuntu 12.04 from a livecd. Out of curiosity, I enabled the accessibility options for people who are hard of sight. As you can guess this does the usual stuff of inverting colours, increasing text size and making the cursor larger. Having finished the installation I booted into the new system to find accessibility mode was still installed. From the lightdm login screen I disabled this which switched colours and text size back to default, however it's only the pointer cursor that has gone back to default. To put it another way, the "hand" icon that you get when hovering over a link, the cursor which appears when typing and pretty much every other cursor on the system are still large. I've looked on the Universal Access menu, but there's no option to disable large cursors. I've tried toggling accessibility on and off but to no avail.

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• How to create a PPA for C++ program?

  - by piotr

  My questions are: c++/gtkmm project created with NetBeans. How to make package to PPA from this? I have created target files structure (*.desktop, iconfile, ui glade files). Binary goes to /opt/extras.ubuntu.com/myagenda/bin/myagenda. There is also a folder of glade files, that must go to /opt/extras.ubuntu.com/myagenda/bin/myagenda/ui. Desktop file goes to /usr/share/applications/myagenda.desktop. Icon goes to /usr/share/icons/hicolor/scalable/apps/myagenda.svg As you see, there is really small amount of files. Now, how to manage all this stuff, to create package on PPA, which knows where and how put this files to their targets? +-- opt ¦   +-- extras.ubuntu.com ¦   +-- myagenda ¦   +-- bin ¦   ¦   +-- myagenda ¦   +-- ui ¦   +-- item_btn_delete.png ¦   +-- item_btn_edit.png ¦   +-- myagenda.png ¦   +-- myagenda.svg ¦   +-- reminder.png ¦   +-- ui.glade +-- usr +-- share +-- applications ¦   +-- myagenda.desktop +-- icons +-- hicolor +-- scalable +-- apps +-- myagenda.svg Update: Created install file in debian directory with targets: data/myagenda /opt/extras.ubuntu/com/myagenda/bin data/ui/* /opt/extras.ubuntu/com/myagenda/ui data/myagenda.desktop /usr/share/applications data/myagenda.svg /usr/share/icons/hicolor/scalable/apps After dpkg-buildpackage it builds, but for amd64 architecture. Now, trying to change that to i386.

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• How to fix boot and mount failed drops to initramfs prompt in Ubuntu 12.04?

  - by msPeachy

  Ubuntu partition does not boot. This started after a power interruption during system boot. The next time I boot, I encountered the following error message: mount: mounting /dev/disk/by-uuid/3f7f5cd9d-6ea3-4da7-b5ec-**** on /root failed: Invalid argument mount: mounting /sys on /root/sys failed: No such file or directory mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /sys on /root/sys failed: No such file or directory mount: mounting /proc on /root/proc failed: No such file or directory Target file system doesn't have /sbin/init. No init found. Try passing init= bootarg. Busybox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) _ I've searched for similar posts here and most of the recommended solution is to reboot to the Ubuntu LiveCD. That's another problem because I cannot boot to a LIVEUSB, this is the error message I get when booting to a LiveUSB: Busybox v1.18.5 (Ubuntu 1:1.18.5-1ubuntu4) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) mount: mounting /dev/sda2 on /isodevice failed: Invalid argument Could not find the ISO /ubuntu-12.04-desktop-i386.iso. This could also happen if the file system is not clean because of an operating system crash, an interrupted boot process, an improper shutdown, or unplugging of a removable device without first unmounting or ejecting it. To fix this, simply reboot into Windows, let it fully start, log in, run 'chkdsk /r', then gracefully shut down and reboot back into Windows. After this you should be able to reboot again and resume the installation. I cannot boot into Windows because I don't have a Windows partition. Do I have to install Windows to fix this problem? Is there a way to fix this in the (initramfs) prompt? Please help. Thank you!

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• Ubuntu boots to terminal on start up

  - by Jules

  For a long time I've been unable to get updates due to a "repositories not found" error. Yesterday someone fixed this for me but after installing 94 days worth of updates my system wanted to restart. It looks like it is booting normally but then it opens a terminal and asks for my login and password. I had tried Ctrl+ Alt +F7 and startx to no avail. Here is everything that appears on screen when I turn the computer on. Ubuntu 10.04.4 LTS box-o-doom tty1 box-o-doom login:julian password: last login: Sun Jul 8 10:28:02 BST tty1 Linux box-o-doom 2.6.32-41-generic-pae #91-Ubuntu SMP Wed Jun 13 12:00:09 UTC 20 12 i686 GNU/Linux Ubuntu 10.04.4 LTS Welcome to Ubuntu! *Documentation: http://help.ubuntu.com julian@box-o-doom:~$_ i then tried dmesg which produced hundreds of lines all very similar to the first line reproduced here [ 9.453119] type=1505 audit1341742405.022:10): operation="profile_replace" pid=743 name="/usr/lib/connman/scripts/dhclient-script" follwed by this at the end [ 9.475880] alloc irq_desc for 27 on node-1 [ 9.475883] alloc kstat_irqs on node-1 [ 9.475890]forcedeth 0000:00:07.0: irq27 for MSI/MSI-X [ 9.760031] hda_code:ALC662 rev1: BIOS auto-probing. [ 10.048095] input:HDA Digital PCBeep as /devices/pci 0000:00:05.o/inp ut/input6 [ 10.862278] ppdev: user-space parallel port driver [ 20.268018] eth0: no IPv6 routers present julian@box-o-doom:~$_ results of startx lots of text scrolls off the screen and i have no way of reading it. but everything i can see is reproduced below current version of pixman: 0.16.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version Markers: (--) probed, (**) from config file, (==) defult setting, (++) from command line, (!!) notice, (II) informational. (WW) Warning, (EE) error, (NI) not implemented, (??) unknown. (==) log file: "/var/log/Xorg.0.log", Time: SUn Jul 8 12:02:23 2012 (==) using config file: "/etc/X11/xorg.conf" (==)using config directory: "/usr/lib/X11/xorg.conf.d" FATAL: Module nvidia not found. (EE) NVIDIA: Failed to load the NVIDIA kernal module please check your (EE) NVIDIA: systems kernal log for aditional error messages. (EE) Failed to load module "nvidia" (module specific error, 0) (EE) No drivers available. Fatal server error: no screens found please consult the X.org foundation support at http://wiki.x.org for help please also check the log files at "/var/log/X.org.0.log" for aditional informati on ddxSigGiveUp: Closing log giving up xinit: No such file or directory (errno 2): unable to connect to X server xinit: No suck process (errno 3): server error julian@box-o-doom:~$_

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• GParted detects entire disk as UNALLOCATED SPACE + hd0 out of disk

  - by msPeachy

  Good day to everyone. I hope someone can help me with my problem. I have a dual boot Windows and Ubuntu system. I recently encountered an hd0 out of disk error and wasn't able to boot Ubuntu. So I booted into Windows. After 2 to 3 times of booting and rebooting Windows, I tried booting Ubuntu again but still I get the same hd0 out of disk error. I decided to run Ubuntu from LIVEUSB to try to fix my Ubuntu partition using GParted, but when I run GParted, it shows my entire disk as UNALLOCATED SPACE! The strange thing is that Nautilus still shows and mounts my partitions. Also every time I boot into Windows , my partitions exists and I am able to read and write to them. I have no idea what is wrong. Please help! I can't stand using Windows since most of the tools I use are in Ubuntu. I don't mind reinstalling Ubuntu. In fact I already tried reinstalling using the LIVEUSB but since GParted or the Ubuntu installer itself does not recognize my partitions and shows the entire disk as unallocated space, I decided not to continue. I am currently running Ubuntu from LIVEUSB. Here's the outpuf of sudo fdisk -l Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xb30ab30a Device Boot Start End Blocks Id System /dev/sda1 * 2048 104869887 52433920 83 Linux /dev/sda2 104869888 105074687 102400 7 HPFS/NTFS/exFAT /dev/sda3 105074688 156149759 25537536 7 HPFS/NTFS/exFAT /dev/sda4 156151800 625153409 234500805 f W95 Ext'd (LBA) /dev/sda5 156151808 169156591 6502392 82 Linux swap / Solaris /dev/sda6 169158656 294991871 62916608 7 HPFS/NTFS/exFAT /dev/sda7 294993920 471037944 88022012+ 7 HPFS/NTFS/exFAT /dev/sda8 471041928 625121152 77039612+ 7 HPFS/NTFS/exFAT When I run, sudo parted -l, I got this error message: ubuntu@ubuntu:~$ sudo parted -l Error: Can't have a partition outside the disk! UPDATE I think I might know the problem. The total sectors of sda is 625142448 but the extended partition (sda4) ends at 625153409. Now, my question is, how do I fix this or modify the extended partition (sda4) to matched the total number of sectors? Anyone, please??? UPDATE I was able to fix the unallocated space issue with the help of Rod Smith's tool called fixparts I am now able to view my partitions via GParted in LiveUSB. But the error: hd0 out of disk. Press any key to continue... still persists on reboot. I still can't boot into Ubuntu. Can someone help me please???

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• Can't write to NTFS formatted drives

  - by mloman

  I'm not sure what has happened, but I've all of a sudden lost write access to any of my NTFS external drives. I installed a few games and apps from the software center, and now I can't make new folders or copy and paste files to anything that is NTFS. Everything is now read only, and I've tried so many things to fix it, but it seems hopeless. Just to check if it wasn't the drives themselves, I made a little ntfs formatted truecrypt volume, and a fat formatted volume. And yes, it seems that Ubuntu is blocking me from writing anything to NTFS. What happened here? Whats a way I can simply get write access to my NTFS drives, so I can just backup all my stuff. I'll probably reinstall Ubuntu. Please help. UPDATE (and thanks everyone for their quick replies) The problem has been solved. Prior to noticing that I had lost NTFS write permission, I had installed GParted from the software center, and there was an extension called ntfsprogs that came with it. During my search for a solution to the problem, I uninstalled GParted (as that was one of the apps I installed just before the problem). But that did not solve the problem. I came across an app called 'NTFS Configuration Tool'. When I installed this, it said that the ntfsprogs extension needed to be removed (so I guess uninstalling GPARTED, didn't remove the ntfsprog extension). I launched the NTFS Configuration Tool and now I have write access to NTFS drives. Unfortunately, I didn't check if I had write permission prior to launching the NTFS Configuration Tool, so I'm not sure whether the NTFS Configuration Tool, or the un-installation of ntfsprog gave me back NTFS write permission. Hopefully if another newbee encounters this problem, they'll come across this page and know what to do.

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• Hiding array in apache_get_modules(); [closed]

  - by John Smiith

  i wan't to view all apache modules i use script below <?php $amods = apache_get_modules(); print_r($amods); This will output Array ( [1] => mod_win32 [2] => mpm_winnt [3] => http_core [4] => mod_so [5] => mod_actions [6] => mod_alias [7] => mod_asis [8] => mod_auth_basic [9] => mod_authn_default [10] => mod_authn_file ) how to hide array ( ... i want to apache get modules like this installed modules is mod_php5 mod_authn_default mod_userdir etc

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• Webmatrix fails to connect PHP website to MySQL

  - by Roni

  I downloaded the latest versions of Webmatrix and MySQL. I downloaded a PHP-MySQL Connector: http://dev.mysql.com/downloads/connector/php-mysqlnd/ In the "Databases" Workspace I pressed "New Connection" button and choose "MySQL Connection" In the Dialog box I filled-in all connection details -- It looks like the database was added. But then when I double-click on the database, I get a short error message saying it cannot connect. I tried everything, searched the web... I'm sure it's a very simple question, so please whoever can help I'll be grateful. I think best solution for me would be if someone could please just give me a link to download of: Webmatrix,MySQL,Connector; and instructions on how to install and then how to connect. This would be the safest way to help me.

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• What do you need to know to get a job as a web developer [closed]

  - by Alex Foster

  What do you need to know to at the very least get your foot in the door? We're assuming for someone who doesn't have a college degree (yet) but will eventually get one. My guess is html, css, javascript, and php, and photoshop and dreamweaver, and sql. And being familiar with using a web host to have sites live, like knowing how to use cpanel. It's probably a very inaccurate and narrow guess but that's what i think right now. I don't know exactly.

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• How change LOD in geometry?

  - by ChaosDev

  Im looking for simple algorithm of LOD, for change geometry vertexes and decrease frame time. Im created octree, but now I want model or terrain vertex modify algorithm,not for increase(looking on tessellation later) but for decrease. I want something like this Questions: Is same algorithm can apply either to model and terrain correctly? Indexes need to be modified ? I must use octree or simple check distance between camera and object for desired effect ? New value of indexcount for DrawIndexed function needed ? Code: //m_LOD == 10 in the beginning //m_RawVerts - array of 3d Vector filled with values from vertex buffer. void DecreaseLOD() { m_LOD--; if(m_LOD<1)m_LOD=1; RebuildGeometry(); } void IncreaseLOD() { m_LOD++; if(m_LOD>10)m_LOD=10; RebuildGeometry(); } void RebuildGeometry() { void* vertexRawData = new byte[m_VertexBufferSize]; void* indexRawData = new DWORD[m_IndexCount]; auto context = mp_D3D->mp_Context; D3D11_MAPPED_SUBRESOURCE data; ZeroMemory(&data,sizeof(D3D11_MAPPED_SUBRESOURCE)); context->Map(mp_VertexBuffer->mp_buffer,0,D3D11_MAP_READ,0,&data); memcpy(vertexRawData,data.pData,m_VertexBufferSize); context->Unmap(mp_VertexBuffer->mp_buffer,0); context->Map(mp_IndexBuffer->mp_buffer,0,D3D11_MAP_READ,0,&data); memcpy(indexRawData,data.pData,m_IndexBufferSize); context->Unmap(mp_IndexBuffer->mp_buffer,0); DWORD* dwI = (DWORD*)indexRawData; int sz = (m_VertexStride/sizeof(float));//size of vertex element //algorithm must be here. std::vector<Vector3d> vertices; int i = 0; for(int j = 0; j < m_VertexCount; j++) { float x1 = (((float*)vertexRawData)[0+i]); float y1 = (((float*)vertexRawData)[1+i]); float z1 = (((float*)vertexRawData)[2+i]); Vector3d lv = Vector3d(x1,y1,z1); //my useless attempts if(j+m_LOD+1<m_RawVerts.size()) { float v1 = VECTORHELPER::Distance(m_RawVerts[dwI[j]],m_RawVerts[dwI[j+m_LOD]]); float v2 = VECTORHELPER::Distance(m_RawVerts[dwI[j]],m_RawVerts[dwI[j+m_LOD+1]]); if(v1>v2) lv = m_RawVerts[dwI[j+1]]; else if(v2<v1) lv = m_RawVerts[dwI[j+2]]; } (((float*)vertexRawData)[0+i]) = lv.x; (((float*)vertexRawData)[1+i]) = lv.y; (((float*)vertexRawData)[2+i]) = lv.z; i+=sz;//pass others vertex format values without change } for(int j = 0; j < m_IndexCount; j++) { //indices ? } //set vertexes to device UpdateVertexes(vertexRawData,mp_VertexBuffer->getSize()); delete[] vertexRawData; delete[] indexRawData; }

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• Android - Multiplayer Game - Client / Server - Java etc

  - by user1405328

  I must write a multiplayer pong game for the school. Where are thousand of rooms and where two players can go in to a room and play together and collect points. I programmed the Pong game using Java (LibGDX). How can I do the Network part. I searched the web. And I came across Kryonet. Is there something better? What should I google. On the Internet there are a lot of those questions. And no good answers. I hope that this most questions can be answered. If someone has actual Open Source network game links, tutorials, books, network tutorial, etc. All this would help everyone. Thank you.

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• How do history generation algorithms work?

  - by Bane

  I heard of the game Dwarf Fortress, but only now one of the people I follow on Youtube made a commentary on it... I was more than surprised when I noticed how Dwarf Fortress actually generates a history for the world! Now, how do these algorithms work? What do they usually take as input, except the length of the simulation? How specific can they be? And more importantly; can they be made in Javascript, or is Javascript too slow? (I guess this depends on the depth of the simulation, but take Dwarf Fortress as an example.)

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• 2D Collision in Canvas - Balls Overlapping When Velocity is High

  - by kushsolitary

  I am doing a simple experiment in canvas using Javascript in which some balls will be thrown on the screen with some initial velocity and then they will bounce on colliding with each other or with the walls. I managed to do the collision with walls perfectly but now the problem is with the collision with other balls. I am using the following code for it: //Check collision between two bodies function collides(b1, b2) { //Find the distance between their mid-points var dx = b1.x - b2.x, dy = b1.y - b2.y, dist = Math.round(Math.sqrt(dx*dx + dy*dy)); //Check if it is a collision if(dist <= (b1.r + b2.r)) { //Calculate the angles var angle = Math.atan2(dy, dx), sin = Math.sin(angle), cos = Math.cos(angle); //Calculate the old velocity components var v1x = b1.vx * cos, v2x = b2.vx * cos, v1y = b1.vy * sin, v2y = b2.vy * sin; //Calculate the new velocity components var vel1x = ((b1.m - b2.m) / (b1.m + b2.m)) * v1x + (2 * b2.m / (b1.m + b2.m)) * v2x, vel2x = (2 * b1.m / (b1.m + b2.m)) * v1x + ((b2.m - b1.m) / (b2.m + b1.m)) * v2x, vel1y = v1y, vel2y = v2y; //Set the new velocities b1.vx = vel1x; b2.vx = vel2x; b1.vy = vel1y; b2.vy = vel2y; } } You can see the experiment here. The problem is, some balls overlap each other and stick together while some of them rebound perfectly. I don't know what is causing this issue. Here's my balls object if that matters: function Ball() { //Random Positions this.x = 50 + Math.random() * W; this.y = 50 + Math.random() * H; //Random radii this.r = 15 + Math.random() * 30; this.m = this.r; //Random velocity components this.vx = 1 + Math.random() * 4; this.vy = 1 + Math.random() * 4; //Random shade of grey color this.c = Math.round(Math.random() * 200); this.draw = function() { ctx.beginPath(); ctx.fillStyle = "rgb(" + this.c + ", " + this.c + ", " + this.c + ")"; ctx.arc(this.x, this.y, this.r, 0, Math.PI*2, false); ctx.fill(); ctx.closePath(); } }

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• How can I keep the correct alpha during rendering particles?

  - by April

  Rencently,I was trying to save textures of 3D particles so that I can reuse the in 2D rendering.Now I had some problem with alpha channel.Some artist told me I that my textures should have unpremultiplied alpha channel.When I try to get the rgb value back,I got strange result.Some area went lighter and even totally white.I mainly focus on additive and blend mode,that is: ADDITIVE: srcAlpha VS 1 BLEND: srcAlpha VS 1-srcAlpha I tried a technique called premultiplied alpha.This technique just got you the right rgb value,its all you need on screen.As for alpha value,it worked well with BLEND mode,but not ADDITIVE mode.As you can see in parameters,BLEND mode always controlled its value within 1.While ADDITIVE mode cannot guarantee. I want proper alpha,but it just got too big or too small consider to rgb.Now what can I do?Any help will be great thankful. PS:If you don't understand what I am trying to do,there is a commercial software called "Particle Illusion".You can create various particles and then save the scene to texture,where you can choose to remove background of particles.

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• Django - Add rows to MySQL database

  - by yeenow123

  So I already have a database setup with a few columns and a few rows already inserted in. I'm trying to create a view that you would just input information into a form and press Submit, then a row would be added to the MySQL database with the information you just typed in. I believe you can do this with admin, but I would like to try without admin and I'm not sure if this is possible? I've been using the MySQL commandline to add rows as of now..

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• PHP the SELECT FROM WHERE col IN no working using array

  - by Sam Ram San

  I'm trying to pull some data from MySQL using an Array that was fetch from a first query. Everything's fine all the way to the implode after that, it's been a headache for me. Can someone help me? <?php $var = 'somedata'; include("config/conect.php"); $zip="SELECT * FROM table WHERE firstcol LIKE '%$var%' ORDER BY seconcol"; $results = $connetction->query($zip); while ($row = $results->fetch_array()){ $mycode[]=$row['zip']; } array_pop($mycode); $mycode = implode(', ',$mycode); //print_r ($mycode); echo '<br /><br /><br />'; $usr="SELECT * FROM reg_temp WHERE zip IN('".join("','", $mycode)."')"; $results = $asies->query($usr); while ($row = $results-> fetch_arra()) { $name = $row['name']; echo $name; } ?>

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• python input UnicodeDecodeError:

  - by The man on the Clapham omnibus

  python 3.x >>> a = input() hope >>> a 'hope' >>> b = input() håpe >>> b 'håpe' >>> c = input() start typing hå... delete using backspace... and change to hope Traceback (most recent call last): File "<stdin>", line 1, in <module> UnicodeDecodeError: 'utf8' codec can't decode byte 0xc3 in position 1: invalid continuation byte >>> The situation is not terrible, I am working around it, but find it strange that when deleting, the bytes get messed up. Has anyone else experienced this? the terminal history shows that I thought that I entered h?ope any ideas? in the script that is using this, I do import readline to give command line history.

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• Is it possible to embed a flash player in a table and retain the table properties

  - by user1494241

  I'd like to embed a music (flash) player in a table with clickable images but the embed code seems to throw the table properties off - it extends the width of the table. Is it possible to embed the player on the same row as the image whilst still retaining the table width? Here's what I've been using: <table width="620" border="0" cellspacing="0" cellpadding="0"> <tr> <td> <div align="left"><object height="18" width="100%"> <param name="movie" value="https://player.soundcloud.com/player.swf?url=http%3A%2F%2Fapi.soundcloud.com%2Fplaylists%2F1253725&amp;auto_play=false&amp;player_type=tiny&amp;font=Georgia&amp;color=9a6600&show_playcount=false&default_width=375&default_height=40&show_user=false"></param> <param name="allowscriptaccess" value="always"></param> <param name="wmode" value="transparent"></param><embed wmode="transparent" allowscriptaccess="always" height="18" src="https://player.soundcloud.com/player.swf?url=http%3A%2F%2Fapi.soundcloud.com%2Fplaylists%2F1253725&amp;auto_play=false&amp;player_type=tiny&amp;font=Georgia&amp;color=9a6600&show_playcount=false&default_width=375&default_height=40&show_user=false" type="application/x-shockwave-flash" width="100%"></embed> </object> </td> <td> <div align="right"><img src="http://dl.dropbox.com/u/31856944/Virb/splash_freedownload-2.png" border="0" width="245" height="42" usemap="#Map" /></div> </td> <tr> <td> <div align="right"><img src="http://dl.dropbox.com/u/31856944/Virb/splash_share-2.png" border="0" width="620" height="31" usemap="#Map2" /></div> </td> </tr> </table>

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