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  • Where should I handle fatal exceptions

    - by Puckl
    For example, I have a controller that loads a file and hands it over to the processing. Should I handle the exception in the file loader and return Null if something is wrong, or should I throw the exception and handle it in the controller? Without the file the rest of the program can´t work. Where should I handle a exception that shuts down the program properly? I want to shut down an Android application properly.

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  • 13.10 qtcreateor 271 wont work

    - by bernd feinman
    Just installed ubuntu 13.10 x86 with all updates. I then installed qt4 libraries and qt creator 271: sudo apt-get install build-essentials sudo apt-get install libqt4-dev sudi apt-get install qtcreator Both installed successfully, and i can launch qt creator, but then i get a black window when i switch to "examples" or "development": http://i.imgur.com/koi6S9S.png The windows cannot be closed. I am guessing because qtcreator somehow cannot find the qt version i installed. This is the settings page: http://i.imgur.com/OgAKH7S.png what to do?

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  • Ubuntu not mounting brand-new external drive

    - by user245115
    I bought a brand new 3TB external drive for my birthday coming up, It's a WD My Book, it came as NTFS, and I'm trying to make it mount using a simple script on boot. (Not /etc/fstab, I ruined my comp. using that by accident and had to re-install, I'm instead having a script run in /etc/init.d) The thing is, it's under /dev/sdf and I want it to mount in /exhd, the script seems to run but it doesn't mount it, any help here?

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  • /etc/postfix/transport missing; what should it look like?

    - by Thufir
    I'm following the mailman guide but couldn't locate /etc/postfix/ so created it as follows: root@dur:~# root@dur:~# cat /etc/postfix/transport dur.bounceme.net mailman: root@dur:~# root@dur:~# telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 dur.bounceme.net ESMTP Postfix (Ubuntu) ehlo fqdn_test 250-dur.bounceme.net 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN mail from:[email protected] 250 2.1.0 Ok rcpt to:thufir@localhost 451 4.3.0 <thufir@localhost>: Temporary lookup failure rcpt to:[email protected] 451 4.3.0 <[email protected]>: Temporary lookup failure quit 221 2.0.0 Bye Connection closed by foreign host. root@dur:~# root@dur:~# postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases, hash:/var/lib/mailman/data/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix default_transport = smtp home_mailbox = Maildir/ inet_interfaces = loopback-only mailbox_command = /usr/lib/dovecot/deliver -c /etc/dovecot/conf.d/01-mail-stack-delivery.conf -m "${EXTENSION}" mailbox_size_limit = 0 mailman_destination_recipient_limit = 1 mydestination = dur, dur.bounceme.net, localhost.bounceme.net, localhost myhostname = dur.bounceme.net mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 readme_directory = no recipient_delimiter = + relay_domains = lists.dur.bounceme.net relay_transport = relay relayhost = smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtp_use_tls = yes smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_recipient_restrictions = reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_local_domain = $myhostname smtpd_sasl_path = private/dovecot-auth smtpd_sasl_security_options = noanonymous smtpd_sasl_type = dovecot smtpd_tls_auth_only = yes smtpd_tls_cert_file = /etc/ssl/certs/ssl-mail.pem smtpd_tls_key_file = /etc/ssl/private/ssl-mail.key smtpd_tls_mandatory_ciphers = medium smtpd_tls_mandatory_protocols = SSLv3, TLSv1 smtpd_tls_received_header = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes tls_random_source = dev:/dev/urandom transport_maps = hash:/etc/postfix/transport root@dur:~# root@dur:~# tail /var/log/mail.log Aug 28 02:05:15 dur postfix/smtpd[20326]: connect from localhost[127.0.0.1] Aug 28 02:06:10 dur postfix/smtpd[20326]: warning: hash:/var/lib/mailman/data/aliases is unavailable. open database /var/lib/mailman/data/aliases.db: No such file or directory Aug 28 02:06:10 dur postfix/smtpd[20326]: warning: hash:/var/lib/mailman/data/aliases lookup error for "thufir@localhost" Aug 28 02:06:10 dur postfix/smtpd[20326]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 451 4.3.0 <thufir@localhost>: Temporary lookup failure; from=<[email protected]> to=<thufir@localhost> proto=ESMTP helo=<fqdn_test> Aug 28 02:06:23 dur postfix/smtpd[20326]: warning: hash:/var/lib/mailman/data/aliases is unavailable. open database /var/lib/mailman/data/aliases.db: No such file or directory Aug 28 02:06:23 dur postfix/smtpd[20326]: warning: hash:/var/lib/mailman/data/aliases lookup error for "[email protected]" Aug 28 02:06:23 dur postfix/smtpd[20326]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 451 4.3.0 <[email protected]>: Temporary lookup failure; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<fqdn_test> Aug 28 02:06:28 dur postfix/smtpd[20326]: disconnect from localhost[127.0.0.1] Aug 28 02:06:49 dur dovecot: pop3-login: Login: user=<thufir>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=20338, TLS Aug 28 02:06:49 dur dovecot: pop3(thufir): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0 root@dur:~# The manual page is here.

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  • Should I go back to college and graduate with a poor GPA or try to jump into an entry-level development position? [closed]

    - by jshin47
    I once attended a top-10 American university but I am currently not in school for several different reasons. Chief among them is that I did very poorly two semesters and even failed one of them (got two F's) which put me in automatic suspension. My major is not CS but math. I am in a pickle at the moment. After I was suspended I got a job at a niche IT company in the area. I am employed as something of an IT generalist; my primary responsibilities are Windows systems administration/networking but I also do some Android, iOS, and .NET development. I have released a few apps to the app store under my name and my company's name, and we have done work for a few big clients. I started working at my job about 1.5 years ago and I am somewhat happily employed but I do not see it as a long-term fit because it is a small company with little opportunity to advance. I would like to move out to California and particularly to the Bay Area to get a job at a more reputable or exciting company, even at a lower rate of pay, but I am not sure if I should do that or try to go back to school. If I went back to school, it would take 1-1.5 years to graduate and some $. Best case scenario I would graduate with a 2.9 or 3.0 GPA. It is a top-10 school, but that's a crappy GPA. If I do not go back to school, I will be a field where most people have degrees, without a degree. If anything goes wrong I could be really screwed as I feel I will get no respect without a degree. On the other hand I really would like to get started in the field and get more serious about developing good development practices, learning new languages/frameworks, and working with people who know a lot more than I so I can learn and grow as a developer and eventually do my own thing. Basically, I am wondering: Should I just go back to school? How much does the bad GPA / good school reputation weigh in? What about the fact that I am a Math major and not a CS major (have never taken a CS course)? Does my skill set as something of a generalist bode well for me finding work at a start up in the Bay Area? If not (2), should I hunker down and focus on producing a really good (or a few medicore) iOS apps? Android apps? etc... How would you look at someone who did great in HS, kind of goofed off in college and eventually quit, and got into development? Thanks for any thoughts or input.

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  • I want to learn the basics of Game Development [on hold]

    - by Mary
    I have programming experience and I would like to know how to start building games. I'm interested in building games for desktops and Android tablets. Could you list the general steps of Game Building? From the more common programming languages used to the software and frameworks available at each stage? I'm just trying to get the big picture of all the different options and tools I have at my disposal. Please leave some book recommendations and useful links!

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  • how to dbkg-preconfigure login manager

    - by Josh
    I've written a script that installs several desktops with a menu loop. I have also redirecteed the output to /dev/null, Now every Time when it comes to dpk login manager selection the script doesn't continue. What could I du to preconfigure the login mangager that should be choosen. How do the lines for dpkg preconfigure look for lightdm gdm Kdm mdm debconf-set-selections <<< ' ' would be grate, too. Thank you folks!

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  • Desktop Fun: Foggy Mornings Wallpaper Collection Series 2

    - by Asian Angel
    All is calm and quiet as the sun peeks over the horizon, lighting up the fog-filled world of nature surrounding you. Wander through these wonderful morning mists on your desktop with the second in our series of Foggy Mornings Wallpaper collections. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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  • Stupid Geek Tricks: Extract Links Off Any Webpage Using PowerShell

    - by Taylor Gibb
    PowerShell 3 has a lot of new features, including some powerful new web-related features. They dramatically simplify automating the web, and today we are going to show you how you can extract every single link off a webpage, and optionally download the resource if you so wish. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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  • Wikipedia passe à OpenStreetMap et abandonne Google Maps pour ses applications mobiles, la version iOS disponible

    Wikipedia passe à OpenStreetMap Et abandonne Google Maps pour ses applications mobiles, la version iOS disponible [IMG]http://ftp-developpez.com/gordon-fowler/OpenStreetMap.png[/IMG] Après Apple pour iPhoto, c'est au tour de Wikipedia de passer à l'alternative collaborative et open source des Google Maps avec OpenStreetMap. Ce choix concerne les applications mobiles (iOS et Android) de l'encyclopédie. Ses applications proposent à un utilisateur de le géolocaliser et d'afficher les éléments intéressants (bâtiments, musées, évènements historiques, etc.) à proximité.

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  • Building a Solaris 11 repository without network connection

    - by user12611852
    Solaris 11 has been released and is a fantastic new iteration of Oracle's rock solid, enterprise operating system.  One of the great new features is the repository based Image Packaging system.  IPS not only introduces new cloud based package installation services, it is also integrated with our zones, boot environment and ZFS file systems to provide a safe, easy and fast way to perform system updates. My customers typically don't have network access and, in fact, can't connect to any network until they have "Authority to connect."  It's useful, however, to build up a Solaris 11 system with additional software using the new Image Packaging System and locally stored repository. The Solaris 11 documentation describes how to create a locally stored repository with full explanations of what the commands do. I'm simply providing the quick and dirty steps.  The easiest way is to download the ISO image, burn to a DVD and insert into your DVD drive.  Then as root: pkg set-publisher -G '*' -g file:///cdrom/sol11repo_full/repo solaris Now you can to install software using the GUI package manager or the pkg commands.  If you would like something more permanent (or don't have a DVD drive), however, it takes a little more work. After installing Solaris 11, download (on another system perhaps) the two files that make up the Solaris 11 repository from our download site Sneaker-net the files to your Solaris 11 system Unzip and cat the two files together to create one large ISO image. The file is about 6.9 GB in size zfs create rpool/export/repoSolaris11 zfs set atime=off rpool/export/repoSolaris11 zfs set compression=on rpool/export/repoSolaris11 (save some space) lofiadm -a sol-11-1111-repo-full.iso /dev/lofi/1 mount -F hsfs /dev/lofi/1 /mnt You could stop here and set the publisher to point to the /mnt/repo location, however, this mount will not be persistent across reboots. Copy the repository from the mounted ISO image to a permanent, on disk location. rsync -aP /mnt/repo /export/repoSolaris11 pkgrepo -s /export/repoSolaris11 refresh pkg set-publisher -G '*' -g /export/repoSolaris11/repo solaris You now have a locally installed repository for adding additional software packages for Solaris 11.  The documentation also takes you through publishing your repository on the network so that others can access it.

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  • More Blogginess

    Hello everyone, and welcome to a rare (in this space) blog about blogging. My name is Tim Bray, and I’m the new editor of this Android Developers’ Blog...

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  • How to Enable Facebook Integration in Firefox

    - by Taylor Gibb
    The latest version of Firefox adds support for native Facebook integration, however the setting to enable it is hidden in about:config. Here’s how to enable it. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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  • McAfee acquiert Trust Digital, un spécialiste de la sécurisation des environnements mobiles en entre

    McAfee acquiert Trust Digital, spécialiste de la sécurisation des environnements mobiles en entreprises McAfee a annoncé l'acquisition de Trust Digital, un spécialiste de la sécurité des environnements mobiles en entreprises pour un montant non encore dévoilé. [IMG]http://djug.developpez.com/rsc/Trust_Digital_McAfee.png[/IMG] Trust Digital fournit des solutions pour la sécurité et la gestion des flottes mobiles des entreprises dont les employés utilisent leurs terminaux mobiles afin d'accéder au système d'information, et cela concerne la plupart des systèmes d'exploitation mobiles tel que Windows Mobile, WebOS, Android et iPhone OS. Cette opération qui doit être finalisée avant la fin d...

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  • Interview Romain Linsolas, un Devoxxien passionné et membre de Developpez.com, par Thierry Leriche-Dessirier

    Bonjour à tous,Voici une interview de Romain Linsolas : http://thierry-leriche-dessirier.dev...per-devoxxien/On croise régulièrement Romain Linsolas dans les conférences françaises et européennes en tant que simple spectateur, mais également comme orateur. Avec quatre interventions sur les précédentes éditions de Devoxx et de nombreuses apparitions dans des Users Groups, Romain est devenu une figure dans le petit monde du développement.Dans cette interview, Romain nous décrit sa vision des conférences...

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  • What packages do I install for ffmpeg and libmp3lame?

    - by matt wilkie
    On my desktop Ubuntu 10.4 I use ffmpeg to convert videos to a format my dvd-player understands. On my laptop running 10.10 I can't get the same command to work, what package(s) are missing? ffmpeg -i infile.flv \ -threads 2 -vcodec mpeg4 -vtag divx -acodec libmp3lame -sameq \ outfile.avi #...snip Unknown encoder 'libmp3lame' Using apt-cache search libmp3lame I'm told there exist libmp3lame0 and libmp3lame-dev, both of which I've installed. Using acodec libmp3lame0 doesn't work either.

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  • Windows7 Console with session memory [closed]

    - by Mateusz
    I am searching console for windows 7 which have memory of typed commands which is stored when I close the cmd prompt. I got frustrated when I have to type again paths with commands, I'm developing for android and I use adb so you can know it can be quite a lot of commands to issue. Other workarounds would be appreciated. Open source or freeware prefed. I have, Console2 (don't store commands), git bash (can't work with that, have some paths issues).

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  • [News] Les 60 outils .NET que vous devriez conna?tre

    Le site de blog webdistortion.com publie une liste de 60 outils que tout d?velopper .NET doit conna?tre : "Every good developer knows never to re-invent the wheel, especially if there is software out there that has been tested by others, and has an established track record. As a developer using the .NET framework I?ve found some of these libraries invaluable, so I?m sharing them for some of the other dev?s out there with a brief outline of how to use."

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  • Complete Math Library for use in OpenGL ES 2.0 Game?

    - by Bunkai.Satori
    Are you aware of a complete (or almost complete) cross platform math library for use in OpenGL ES 2.0 games? The library should contain: Matrix2x2, Matrix 3x3, Matrix4x4 classes Quaternions Vector2, Vector3, Vector4 Classes Euler Angle Class Operations amongh the above mentioned classes, conversions, etc.. Standardly used math operations in 3D graphics (Dot Product, Cross Product, SLERP, etc...) Is there such Math API available either standalone or as a part of any package? Programming Language: Visual C++ but planned to be ported to OS X and Android OS.

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  • Keeping a Computer Tower Cool the Easy Way [Image Set]

    - by Asian Angel
    A lack of proper airflow will definitely not be a problem with this computer tower… Image courtesy of Envador.com You can view a multitude of images for the PVC Computer Tower in its final and early incarnations along with a parts list at the Envador link below. PVC Pipe Computer Tower – Envador.com [via There I Fixed It - Cheezburger Network] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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  • LTSP thin client to single user mode

    - by DJC
    Is it possible to boot a LTSP thin client to single user mode? I've updated the default entry under /var/lib/tftpboot/ltsp/i386/pxelinux.cfg to read as follows: - append ro initrd=initrd.img root=/dev/nbd0 init=/sbin/init-ltsp nomodeset quiet splash **single** plymouth:force-splash vt.handoff=7 nbdroot=:ltsp_i386 This kind of works! I see the boot progress to the point where it asks me to either enter the root password or Ctrl+D to bypass. However, the boot process just seems to continue without providing an chance to do either.

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  • OTN: There's an App for That

    - by oracletechnet
    You want access to Oracle Technology Network updates from a mobile device, you say? Well you can have that today. The official Oracle app for iOS, Android, and BB is useful for many things, but my personal favorite is the "Developers" channel:  From there, it's trivial to consume links to things tagged by the OTN team - which may include "home" content or curated links from other places: All in all, it's a good way to stay in touch! 

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  • What alternatives to Animated GIFs are natively supported on all popular modern browsers on tablets, etc. without pluggins?

    - by Clay Nichols
    I was looking for an alternative animated images to Animated GIFS. But per CanIUseit support for APNGs seems to being phased out. And MNG support isn't even listed there and pages about it don't even mention Chrome (suggesting those pages are very very old) Clarification: This is for a web app, so it'll need to support: - Safari on iPad (so can't depend on extensions) - Chrome on Windows and Mac - Safari 6.0+ on Mac - Chrome on Android

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  • What algorithms can I use for bullet movement toward the enemy?

    - by theateist
    I develop 2D strategy game(probably for Android). There are weapons that shooting on enemies. From what I've read in this, this, this and this post I think that I need Linear algebra, but I don't really understand what algorithm I should use so the bullet will go to the target? Do I nee pathfinder, why? Can you please suggest what algorithms and/or books I can use for bullet movement toward the enemy?

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