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• Should a domain expert make class diagrams?

  - by Matthieu

  The domain expert in our team uses UML class diagrams to model the domain model. As a result, the class diagrams are more of technical models rather than domain models (it serves of some sort of technical specifications for developpers because they don't have to do any conception, they just have to implement the model). In the end, the domain expert ends up doing the job of the architect/technical expert right? Is it normal for a domain expert (not a developer or technical profile) to do class diagrams? If not, what kind of modeling should he be using?

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• How do I handle a Controller that's not controlling a specific Model?

  - by Ben Brocka

  I've got a nice MVC set up going but my website requires some views that don't map directly to a model. Specifically I've got some generic Reports users need to run, and now I'm creating a utility for comparing some system configurations. Right now the logic is crammed into a Reports Controller and I'm starting a Comparison Controller but this feels like a big abuse of the system. Both controllers use an assortment of different Models to pull data from, and they're only related based on what the user is doing. Reports are run from the Reports Controller and their views are all grouped together in the file system/URL structure. Is this an acceptable use of the Controller paradigm? I can't think of a better way to structure my Controllers, and making a Controller for each model I'm using to make reports/ect doesn't seem like a good idea; I'd end up with one Controller/Model/View per report or comparison, vastly complicating the apparent structure of my site.

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• Macbook Pro keyboard with BootCamp - missing the Home/End/PageUp/PageDown keys

  - by brainjam

  Last year I converted from Windows to a MacBook Pro and went through the process of learning the ways of the Mac keyboard. In particular, I learned that Ctrl-left and Ctrl-right were the Mac way of doing Home and End. I'm now doing a project on Windows 7 on Bootcamp, and finding that I'm missing the Windows Home and End keys in a completely different way -- they don't exist, but the Mac combos don't work either. Any suggestions for getting this functionality somehow? Code editing is a real drag without these keys.

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• Implementing separation of concerns via MVC

  - by user2368481

  I'm creating a question to see if my understanding of MVC separation is correct, I haven't been able to find a clear answer anywhere online. So is this the right way to implement it (in Java): I would have 3 .java files, one each for Model, Controller, View. I would put all the classes related to Model in the Model.java like so: //Model.java { public class Model //class fields public Model(); public ModelClassA(); public ModelClassB(); public ModelClassC(); } With the ModelClasses being any class that I consider belonging to the Model. Is it correct to have the classes within the Model Class, as I have read that nested classes should be avoided where possible.

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• How do early version numbers work for new products?

  - by Lord Torgamus

  I'm currently writing a small desktop application for a friend, but I'm doing it primarily as a learning experience for myself. In the spirit of getting educated and doing things The Right Way, I want to have version numbers for this app. My research brought up these related results What "version naming convention" do you use? How do you version your files (Version Numbers) Forked a project, where do my version numbers start? but none of them address numbering of alphas, betas, release candidates, &c. What are the conventions for version numbers below 1.0? I know they can go on for some time; for example, PuTTY has been around for at least a decade and is still only at version beta 0.60.

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• How to tell thunar to stop using my device?

  - by Guillaume Coté

  When I do sudo umount /media/KINGSTON I got umount: /media/KINGSTON: device is busy. By using fuser -c /media/KINGSTON And cat /proc/<pid>/cmdline I found that the process is thunar--deamon. I closed all file manager windows. When I try to umount it by right cliking on the desktop, it also gave an error : An application is preventing the volume "KINGSTON" from being unmounted I am affraid that killing Thunar is going to impact other process running in other terminal. How can I tell it that I don't need this usb key anymore so it stop using it?

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• Updating from OSX Lion 10.7.2 to 10.7.4

  - by Ozair Kafray

  I just got my Mac upgraded to 10.7.2, just to be able to install Xcode 4.3.3. However, when I try to install Xcode 4.3.3, it says that it requires a minimum of OSX 10.7.3. Then using the "Software Upgrade" tool it detects successfully for me that a combined upgrade to 10.7.4 is available. As I select Install Item, the download starts however, it fails after complete download (taking two hours) saying something like "the update cannot be saved". I have done this twice already, and followed it up until 5 minutes were left. I have also checked that there is enough space (60 GB) available on my hard disk, while the update requires around 1.5 GB. The question is what is causing the problem mentioned in bold above.

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• Protecting PDF files and XDO.CFG

  - by Greg Kelly

  Protecting PDF files and XDO.CFG Security related properties can be overridden at runtime through PeopleCode as all other XMLP properties using the SetRuntimeProperties() method on the ReportDefn class. This is documented in PeopleBooks. Basically this method need to be called right before calling the processReport() method: . . &asPropName = CreateArrayRept("", 0); &asPropValue = CreateArrayRept("", 0); &asPropName.Push("pdf-open-password"); &asPropValue.Push("test"); &oRptDefn.SetRuntimeProperties(&asPropName, &asPropValue); &oRptDefn.ProcessReport(&sTemplateId, %Language_User, &dAsOfDate, &sOutputFormat); Of course users should not hardcode the password value in the code, instead, if password is stored encrypted in the database or somewhere else, they can use Decrypt() api

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• Resolution independent physics

  - by user46877

  I'm making a game like Doodlejump but don't know how to make the physics scale on multiple resolutions. I also can't find anything related to this on Google. Right now I'm scaling the game using letterboxing and tested scaling the jump height with this code: gravity = graphics.getHeight() * 0.001f; jumpVel = graphics.getHeight() * -0.04f; ... velY += gravity; y += velY; But if I test this on my smartphone or emulator with different resolutions, I always get a slightly different jump height. I know that Farseer is resolution independent. How can I replicate this in my game? Thanks in advance.

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• Cannot access files after trying to upgrade Ubuntu

  - by Ola

  I tried to upgrade Ubuntu from 11.10 to 12.04. I left it for 24 hours but the upgrade did not complete. Hence I cancelled the upgrade. I thought I will copy all the files that I have to a DVD/CD and try try downloading a copy of Ubuntu. But now, I cannot open any file or copy them. I cannot even shutdown my laptop. I have many important files on my laptop. Can someone help me retrieve my files from my laptop? Regards Ola

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• How to install Oracle Database 11g Express Edition on Ubuntu 12.10?

  - by Praneeth Pj

  I installed the Oracle database following the steps mentioned in this blog. Downloaded 11g express edition Created a new user oracle under the group dba. Following steps are executed using this. Unzipped oracle-xe-11.2.0-1.0.x86_64.rpm.zip and then converted the rpm to the Ubuntu package by running: sudo alien --scripts -d oracle-xe-11.2.0-1.0.x86_64.rpm Created /sbin/chkconfig file and added the entries as specified there. Created /etc/sysctl.d/60-oracle.conf and added the entries as specified in the same link as above. Running the commands: ln -s /usr/bin/awk /bin/awk mkdir /var/lock/subsys touch /var/lock/subsys/listener .deb generated in step 3: sudo dpkg --install oracle-xe_11.2.0-2_amd64.deb Left the default values as it is: sudo /etc/init.d/oracle-xe configure Set the following env variables in ~/.bashrc file: export ORACLE_HOME=/u01/app/oracle/product/11.2.0/xe export ORACLE_SID=XE export NLS_LANG=`$ORACLE_HOME/bin/nls_lang.sh` export ORACLE_BASE=/u01/app/oracle export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH export PATH=$ORACLE_HOME/bin:$PATH Running the commands: chown -R oracle:dba /var/tmp/.oracle chmod -R 755 /var/tmp/.oracle chown -R oracle:dba /tmp/.oracle chmod -R 755 /tmp/.oracle Starting Oracle Database 11g Express Edition instance: sudo service oracle-xe start sqlplus / as sysdba and got the following: SQL*Plus: Release 11.2.0.2.0 Production on Thu Jan 3 09:41:58 2013 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to an idle instance. Now when exectuting any SQL statements on SQLplus, I end up with the following error: SQL> select * from dual; select * from dual * ERROR at line 1: ORA-01034: ORACLE not available Process ID: 0 Session ID: 0 Serial number: 0 I have increased the swap memory as specified here $ free -m total used free shared buffers cached Mem: 3901 3428 473 0 182 1988 -/+ buffers/cache: 1258 2643 Swap: 5066 0 5066

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• After installing Ubuntu using WUBI, starting Ubuntu does not get further than the GRUB prompt

  - by Kris Everett

  I'm trying to install Ubuntu. I put Ubuntu on a USB flash drive using the WUBI installer. I get to where it finishes the install and it wants me to reboot. But when I reboot and then select Ubuntu, I get a black screen that says GNU GRUB version 1.99-21ubuntu3 Minimal BASH-like editing is supported. for the first word. TAB lists possible command completions. Anywhere else TAB lists possible device or file completions. Grub> When I type in some commands it says "Kernel not specified" and the rest of the commands give no feed back what so ever. What did i do wrong? Can anyone point me in the right direction. Please help this is very frustrating any help would be useful.

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• My Intel Core i3 frequently shuts down due to "Processor Thermal Trip error"

  - by explorest

  My Desktop PC running Windows 7 on Intel Core i3 dual processor machine started shutting down during the boot process a couple of days ago. I left it alone for about 48 hours and tried again. The boot process informed me about Processor Thermal Trip as being the cause of boot failures and suggested a Windows recovery process. I went through the recovery process which completed without problems. The PC booted normally and Windows 7 worked as expected but after 10 minutes it again tripped and now whenever I start it, it shuts down during the boot process. What should I do next?... is there a boot menu / setup settings that needs to be adjusted to avoid it... Or is there a hardware problem (which seems unlikely as the machine occasionally boots perfectly )?

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• no disk space, cant use internet

  - by James

  after trying to install drivers using sudo apt-get update && sudo apt-get upgrade, im faced with a message saying no space left on device, i ran disk usage analyzer as root and there was three folders namely, main volume, home folder, and my 116gb hard drive (which is practically empty) yet both other folders are full, which is stopping me installing drivers because of space, how do i get ubuntu to use this space on my hard drive? its causing problems because i cant gain access to the internet as i cant download drivers when i havnt got enough space, this happens every time i try it sudo fdisk -l Disk /dev/sda: 120.0GB, 120034123776 bytes 255 heads, 63 sectors/track, 14593 cylinders, total 234441648 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: 0x0003eeed Device Boot Start End Blocks Id System /dev/sda1 * 2048 231315455 115656704 83 Linux /dev/sda2 231317502 234440703 1561601 5 Extended /dev/sda5 231317504 234440703 1561600 82 Linux swap / solaris Output of df -h df: '/media/ubuntu/FB18-ED76': No such file or directory Filesysytem Size Used Avail Use% Mounted on /cow 751M 751M 0 100% / udev 740M 12K 740M 1% /dev tmpfs 151M 792K 150M 1% /run /dev/sr0 794M 794M 0 100% /cdrom /dev/loop0 758M 758M 0 100% /rofs none 4.0K 0 4.0K 0% /sys/fs/cgroup tmpfs 751M 1.4M 749M 1% /tmp none 5.0M 4.0K 5.0M 1% /run/lock none 751M 276K 751M 1% /run/shm none 100M 40K 100M 1% /run/user

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• Advice for beginner programmer

  - by user3461957

  I am beginner in software development. I noticed when I try to learn one technology let's say .NET I loose my grip over other for example Java. I thought it would be better to concentrate on one technology either Java or .NET to make significant advancement and be an expert, because they can be many details which one can ignore when keeps on changing between technologies. Is my decision right? Do experts choose this approach? Update: Should I pursue my career knowing one technology or not?

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• External Video Hosting - will it eat my bandwidth?

  - by user4524

  I hav asked this question before, on serverfault, but have been unable to get a clear answer or spammy ones. A client runs a website with limited bandwidth per month (10gb) but wants his users to be able to download hq videos. Now if he would rent hosting space on amazon, for example, the downloads would still go through his website right? So would this then still eat his bandwidth then, or not? It there a way to circumvent this? How do you do this, if you have limited bandwidth? If you are kind enough to answer, please don't spam me with what is good and not good hosting, I already know.

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• Recaptcha php problem [closed]

  - by Sam Gabriel

  Hey guys, I'm using recaptcha and I've got a problem, when a user clicks the signup button it redirects him to the sign up verification page, and here is the code, found on the very top of the web code, that checks the recaptcha entered data. <?php require_once('recaptchalib.php'); $privatekey = "***"; $resp = recaptcha_check_answer ($privatekey, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]); if (!$resp->is_valid) { header('location: signup.php'); } ?> But it seems whatever I type in in the recaptcha box, be it right or wrong, I get redirected to the signup.php page. Here is the recaptcha code in the signup.php page: <?php ini_set('display_errors', 'On'); error_reporting(E_ALL | E_STRICT); require_once('recaptchalib.php'); $publickey = "***"; echo recaptcha_get_html($publickey); ?>

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• Are there any good apps for managing vCard vcf files?

  - by Lunatik

  I've just got an Android handset and the import of the SIM contacts from my old phone has left them in a mess; lack of capitalisation, funny character substitutions, odd delimiters etc. I have exported the contacts list as a vcf and while I could manually edit this file, I was really after a desktop app that could do formatting, search & replace etc. There are Android apps that do this but, as much as I like the phone's UI, the prospect of sorting hundreds of contacts via it doesn't exactly fill me with joy. A quick Google just threw up lots of questionable download sites, hoping someone can suggest a lightweight alternative

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• User Independant Share Folder

  - by ell

  At the moment, I have a folder in my home directory that is shared on my laptop and can also be accessed by the other windows desktop pcs in my network but now I have decided to make my home folder inaccessible by other users on my laptop so other people cannot look at my files if they have a user on my laptop. I set the permissions to none for everyone apart from me. I then changed the share folder (/home/elliot/Shared) to allow all access but my windows computers and other users on my laptop cannot access it even though they have the right permission, I think this is because they don't have access to the home folder in which the Shared folder is stored. Where should I store a new Shared folder on my laptop? Should I put it as /home/Shared? Or, alternatively is there a way I can allow other users to access my /home/elliot/Shared folder even if /home/elliot is inaccessible? Thanks in advance, ell.

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• Can my email address be revoked? [closed]

  - by Name

  I did some work with an organization and had a falling out, so I left them. They used postfix to have [email protected], and I had one. I set up gmail to get my mail via POP as well as to "send mail as @_.com". I think for a long time they forgot to delete my email address and now it seems that I can send but not receive mail at the address. What could a possible explanation for this be? Can they revoke delivery but not sending from the address? Why would they only revoke one if they cna revoke both? Is it more tedious or difficult a task to revoke sending? Thanks

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• T-SQL Tuesday #005: On Technical Reporting

  - by Adam Machanic

  Reports. They're supposed to look nice. They're supposed to be a method by which people can get vital information into their heads. And that's obvious, right? So obvious that you're undoubtedly getting ready to close this tab and go find something better to do with your life. "Why is Adam wasting my time with this garbage?" Because apparently, it's not obvious. In the world of reporting we have a number of different types of reports: business reports, status reports, analytical reports, dashboards,...(read more)

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• Error pages in ASP.NET

  - by koevoeter

  In ASP.NET you can retrieve the last unhandled exception via:(HttpContext.Current.)Server.GetLastError() // Server object is available as a property in Page and UserControl context This obviously only works in the same roundtrip. If you want to retrieve this information in your error page, you got a problem because the error page is not returned in the same roundtrip. The server responds with a redirect response and a new request to the error page is automatically sent. A common workaround would be to store the exception in your Session state from the Application_Error event in Global.asax. From ASP.NET 3.5 you can configure the redirect mode for error pages: <customErrors mode="On" defaultRedirect="~/Error.aspx" redirectMode="ResponseRewrite" /> This way the redirect response is not sent and the error page is returned right away. That implies that the browser is not aware of a page change and cannot reflect it in the address bar, so your original URL is not replaced with the URL of the error page, which might be what you actually want…

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• Two Free Training Webcasts Open for Registration

  - by KKline

  We've got two sessions that you need to sign up for right away. The upcoming webcast for Oracle-oriented folks has huge registration numbers. So get in while you still can before we hit the limit of what LiveMeeting can handle. Pain of the Week: SQL Server for the Oracle DBA Webcast: SQL Server for the Oracle DBA Date: Thursday, May 27, 2010 (Just a couple days hence!) Time: 8 a.m. Pacific / 11 a.m. Eastern / 4 p.m. United Kingdom / 5 p.m. Central Europe Duration: 45-60 minutes Cost: FREE In enterprise...(read more)

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• How do I get same scrollbar style for gtk-2.0 and gtk-3.0 apps?

  - by David López

  Sorry for my English mistakes, I'm Spanish. I'm using Ubuntu 11.10 in a tablet. I've removed overlay-scrollbars and I have increased the scrollbars size to use them with fingers. In /usr/share/themes/Ambiance/gtk-2.0/gtkrc I've changed: GtkScrollbar::slider-width = 23 GtkScrollbar::min-slider-length = 51 and added: GtkScrollbar::has-backward-stepper = 0 GtkScrollbar::has-forward-stepper = 0 In /usr/share/themes/Ambiance/gtk-3.0/gtk-widgets.css I've changed: GtkScrollbar-min-slider-length: 51; GtkRange-slider-width: 23; (in .scrollbar item) Now my scrollbars are usable with fingers, but they seem different for gtk-2.0 and gtk-3.0 apps. In the picture the left scrollbar is a gtk-2.0 app and the right one is a gtk-3.0 I want to setup gtk2.0 bar to be exactly the same as gtk3.0, that is Make upper and lower extremes empty (oranges circles in the picture) Reduce the length of the 3 horizontal lines (black ellipse) Can somebody help me? Thanks. Hola. Uso ubuntu 11.10 en una tableta; he quitado overlay-scrollbars y he incrementado el tamaño de las barras para poder usarlas con los dedos. Concretamente en /usr/share/themes/Ambiance/gtk-2.0/gtkrc be cambiado GtkScrollbar::slider-width = 23 GtkScrollbar::min-slider-length = 51 y añadido GtkScrollbar::has-backward-stepper = 0 GtkScrollbar::has-forward-stepper = 0 En /usr/share/themes/Ambiance/gtk-3.0/gtk-widgets.css he cambiado GtkScrollbar-min-slider-length: 51; GtkRange-slider-width: 23; (en el apartado.scrollbar) Mis barras son manejables con dedos, pero se ven muy distintas para aplicaciones gtk-2.0 y gtk-3.0. La barra de la izquierda de la imagen es 2.0 y la de la derecha es 3.0 Quiero configurar las barras 2.0 exactamente como las 3.0, para lo que necesito Vaciar los extremos de la barra (círculos naranjas en la imagen) Reducir la longitud de las 3 líneas horizontales (elipses negras en la imagen) ¿Alguna idea? Gracias.

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• 13.04 Gnome - removing icons from lower panel

  - by Mikey

  I use the stripped down Gnome UI for 13.04 (Gnome-no effects) and on the bottom there is a panel where you can put icons for app launchers, by dragging them from applications menu. This is probably a really dumb question, but I can't figure out how to REMOVE a launcher icon from that panel once I put there! How is this done? Note - I saw another answer that said click alt-super and right click on top panel - I clicked remove launcher and now my top Application and Places menus are gone! How do I get them back - all screwed up now.

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