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• Qt Quick : des interfaces déclaratives hors normes ? Pourquoi ne sont-elles pas encore répandues ?

  Il y a peu, Nokia lançait Qt Quick, un nouveau module de Qt permettant de décrire des interfaces graphiques, un paradigme alors présenté comme assez nouveau. Or, une simple recherche à l'aide de Google montre bien que ces technologies ne sont pas récentes du tout, on trouve par exemple des traces de K, un langage presque ésotérique tellement il est peu connu du grand nombre actuellement, dans les années 90. Qu'est-ce qui a changé depuis lors ? Aussi, on peut remarquer que d'autres technologies phares dans le développement applicatif telles que .NET ou Java en disposent depuis belle lurette. On peut notamment citer XAML (arrivé avec le .NET Framework 3.0) du côté .NET ou Swul pour Java. Qu'ont-ils donc de différent ? Peut-on les comparer ? Ils tentent tous d'atteindre un cer...

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• Creating a WARP device in managed DirectX

  - by arex

  I have a very old graphic card that only supports shader model 2, but I need shader model 3 or up for the app I am developing. I tried to use a reference device but it seems to run very slowly, then I found some samples in C++ that allows me to change to a WARP device and the performance is good. I am using C# and I don't know how to create such type of device. So the question is: how do I create a WARP device in C#? Thanks in advance.

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• Moving from mock to real objects?

  - by jjchiw

  I'm like doing TDD so I started everything mocking objects, creating interface, stubbing, great. The design seems to work, now I'll implement the stuff, a lot of the code used in the stubs are going to be reused in my real implementation yay! Now should I duplicate the tests to use the real object implementation (but keeping the mocks object of the sensitive stuff like Database and "services" that are out of my context (http calls, etc...)) Or just change the mocks and stubs of the actual tests to use the real objects....... So the question is that, keep two tests or replace the stubs, mocks? And after that, I should keep designing with the mocks, stubs or just go with real objects? (Just making myself clear I'll keep the mock object of the sensitive stuff like database and services that are out of my context, in both situations.)

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• large tmpfs /run partition - must it be so big?

  - by Stevod

  I am running Ubuntu 11.10 desktop on a couple of 8G RAM Wintel boxes. Both have been created automatically by the default installer with a 1.6GB tmpfs /run partition, where I suspect this amount of RAM could be more usefully used elsewhere in the system. I suspect that the installer takes 20% as the default, which is probably OK for boxes with lots less RAM, but seems overkill for an 8GB system. My question is - can I change its size, if so, how, and what are the risks in doing so? The /run partition does not appear in the /etc/fstab file so it must be set up elsewhere.

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• pygame.Rect around circle

  - by geekkid

  I'm trying to make a pong game in pygame , but i can't figure out how to but a ball circle , which i can create with pygame.draw.circle into a pygame.Rect object so i can use the colliderect function and manipulate the ball's position. For example, with rectangles, i can do something like this : rect = pygame.Rect(255, 255, 100, 100) pygame.draw.rect(screen, yellow, rect) and then when i change the pygame.Rect object position , the drawing primitives position also changes. How can the same effect be achieved when i want to draw a circle, instead of a rectangle? Thank you.

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• Vectors with Circles Physics -java

  - by Joe Hearty

  This is a problem I've been having, When making a set number of filled circles at random locations on a JPanel and applying a gravity (a negative change in the y), each of the circles collide. I want them to have collision detection and push in the opposite direction using vectors but i don't know how to apply that to my scenario could someone help? public void drawballs(Graphics g){ g.setColor (Color.white); //displays circles for(int i = 0; i<xlocationofcircles.length-1; i++){ g.fillOval( (int) xlocationofcircles[i], (int) (ylocationofcircles[i]) ,16 ,16 ); ylocationofcircles[i]+=.2; //gravity if(ylocationofcircles[i] > 550) //stops gravity at bottom of screen ylocationofcircles[i]-=.2; //Check distance between circles(i think..) float distance =(xlocationofcircles[i+1]-xlocationofcircles[i]) + (ylocationofcircles[i+1]-xlocationofcircles[i]) ; if( Math.sqrt(distance) <16)

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• Continuing to code on large projects

  - by user3487347

  I am a hobbyist programmer, and I've started many medium - sized projects to work on just by myself. These include games, a raytracer, physics simulations etc. By the time these projects get to a certain size (around 5000 lines), I begin to slow down in adding features to the program. This is not because of a lack of ideas of what to implement in a program, but rather a struggle in how to go about it. In particular, I'm afraid of breaking what I already have working in order to implement a new feature. I've tried using version control like Git and Subversion, but these seem unnecessary when you are a one man team. I simply have a folder of "versions" of my program, one for each major change I make. How do I keep coding past this 5000 line mark? What about the 50000 line mark?

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• Does the user agent in any regular browser contain 'bot' or 'crawl'?

  - by Echo

  Does the user agent in any regular browser contain 'bot' or 'crawl'? I check the user agent on my site to see if it is coming from a bot or not. If it is, I can do some little optimizations since they don't login. (I don't change the content at all) After adding checks for 30-40+ bots, I'm getting tired of added them. So I was wondering if checking if it just contains 'bot' or 'crawl'. I know that wont get all bots, but it would get a lot of them. But if that could cause any false positives, then it would totally mess up the ability to add to cart, place an order, and login in.

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• Some problem about Compiz and GTK on Ubuntu 14.04

  - by LVHoanh

  I installed Ubuntu 14.04 on my computer : i3/4G/750G/VGA Intel HD3000 & 1GB NVidia with CUDA GT540M. I've some problems with Ubuntu 14.04 : Does Ubuntu 14.04 support Emerald Theme Manager? Emerald Theme Manager is not available in Ubuntu Software Center? I installed Compiz and Compiz Setting Manager, it works ok, but the Windows 3D plugin is not work? The Shutdown/Restart function on Right-Top Panel is not work, is there any solution for this problem? The mouse theme I installed only work in current session, next time i restart computer it change back to default mouse theme? How can i resize the spacing between Desktop Icon? Waiting for everyone respond. Thankyou so much. P/s : My English is not good, expect you understand. :)

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• Ubuntu 12.04 Hangs with Software Center open then opening Dash Home

  - by Josea

  I have a Dell D610 - Intel graphics - 1 Gig RAM. I have test the hard drive and RAM and both are fine. When I open Software Center, then Dash home my system locks up. The mouse cursor moves but is unresponsive if I try to right or left click anything. The keyboard is totally unresponsive and I have to hold the power button to power off! I have reinstalled from CD, did all updates but the issue persists. I tried using the track pad only, and I plugged in an external mouse also but no change. Everything else works great ! I am sick of running Vista and have no love for Metro! Thanks for any suggestions, on a scale of 1 to 10 (Newbie - Expert) I am about 3

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• Cannot boot Windows 7 after installing Ubuntu 13.04

  - by whowantsakookie

  So I boot up my computer after installing Ubuntu 13.04. Grub correctly shows me all available boot options and I am able to boot to Ubuntu. However, when I try to boot into Windows 7, grub hangs at a purple screen. I have an HP laptop. It came with all four primary partitions taken up by the Windows bootloader, the actual Windows partition, one called HP_TOOLS, and another for HP Restore. I was able to back up and delete HP_TOOLS and the recovery partition, and change my disk type from Dynamic to Basic (GParted doesn't recognize Dynamic drives). I then booted into a live session of Ubuntu and made two partitions with GParted: one large partition for storage space that I could use between the two operating systems (sda4), and another extended partition (sda3) which contained Ubuntu (sda6) and it's swap space (sda5). It currently looks like this: I'm not sure if the second paragraph is actually relevant, I just want you to know all the variables in the equation. Thank you in advance for helping this poor noob.

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• SAP annonce des pré-résultats records pour ses ventes de logiciels au 4ème trimestre 2010

  SAP annonce des pré-résultats records Pour ses ventes de logiciels au 4ème trimestre 2010 Malgré le départ de son PDG pour HP et l'affaire TomorrowNow qui l'oppose à Oracle, l'éditeur allemand de solutions professionnelles SAP se porte bien. La société vient d'annoncer des pré-résultats records pour le le 4ème trimestre de son année fiscale 2010, qui se terminait le 31 décembre 2010. . Ses revenus liés à la vente de logiciels s'élèvent à 1,5 milliards d'Euros, soit une progression de + 34 % (+ 24 à taux de change constant). SAP s'en félicite. « Nous sommes heureux d'annoncer le meilleur trimestre de ventes de logiciels de l'histoire de SAP. Nous avons réalisé une...

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• How do I secure a Tomcat installation?

  - by spangeman

  I have installed tomcat on my Ubuntu Home 11.10 system and can successfully access the test page online after port forwarding on 8080 within my router. I have not made any other changes to the router, Ubuntu or the tomcat install, everything else has remained standard. I intend on using this to play around with Java Servlets and basic web development for my own personal use. What steps, if any, would you suggest I take to ensure this is secure? Should I change anything within the Tomcat configuration? This seemed like a good idea to limit access - http://www.seankilleen.com/2010/09/how-to-allow-only-specific-ip-addresses_30.html But I am open to any other recommendations.

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• Amnesic Environment

  - by Mike Clark

  My team is looking for a technical term which may or may not exist. We are trying to describe an environment, such as a database, which has been built up over time with little or documentation about the change process that has gone into it. Generally these are legacy systems who's original developers have long since moved on and they are in such a tangled and unmanageable state that the only way to recreate the environment, say for testing purposes, is to copy it and do your best guess at re-configuring it for its new purpose. So far the best term we have come up with is Amnesic, such as "setting up the new test environment is going to be a challenge because it is an amnesic db." However, we are still not quite happy with the term and were wondering if a better and/or more accepted term for this situation exists.

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• Internet (HTTP) is not working on Sony Viao

  - by vijay

  I switched my sony viao laptop from XP to ubuntu 10.04 recently. I have it connected through router at home. The internet was working fine with XP. With ubuntu, i am not able to connect to interenet. I am able to update using apt, and i am able to ping too. It seems like there is a DNS issue, when i try to goto sites from firefox, it doesn't work. I tried disabling the ipv6 in firefox config, it doesn't work. My router is on 192.168.2.1 instead of 192.168.1.1 any ideas on what config i might need to change to make this work? or could this be a drive issue?

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• And again... VMware Player 4.0.4 on Ubuntu 12.04 (Precise Pangolin)

  Even with the new version of VMware Player 4.0.4 you are still required to patch their sources. So, same game as last month. Just changing the value of the required version in the kernel patch script of Stefano Angeleri (weltall) and you are done: nano patch-modules_3.2.0.sh Please change line 8 at the top of the script like so: plreqver=4.0.4 Save your modification and then run the following commands: sudo rm /usr/lib/vmware/modules/source/.patchedsudo ./patch-modules_3.2.0.shsudo service vmware restart And again, on first start VMware will present you their EULA which you have to accept, and everything gets back to normal operation mode. Interestingly, one day ago the Ubuntu repositories provided a newer kernel version 3.2.0-25, so everything is running fine for now.

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• Playing audio stream not showing in pavucontrol

  - by user168505

  My Pulse Audio Volume Control (pavucontrol) is not shown volume bar which present below the volume control slider for right and left channels in the Play tab . However, I can hear audio,and the pavucontrol Play tab shows the name of the application(any media player vlc,mplayer etc.) which is running and volume control for right and left channels (FROM LEFT & FROM RIGHT Volume slider) I guess there may be a change in the system configuration/setting? How to reset it? I have reinstalled Pulseaudio, but the problem remains. I am using ubuntu 12.04 with default pulse audio.

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• How to redesign the UI of a large project?

  - by jem88

  I'm currently working at a quite big Android project (a social network, you can see it here if is useful to answer the question). We decided to restyle the whole app, changing all the UI design. The code I actually have is complex, there are many controllers, and it's a little messy too. Is it "better" in terms of time and code cleanliness to take one controller per time, and rewrite it entirely, or to modify one controller per time? The layout change entirely anyway, so for that I know I've to restart from scratch. Maybe it could seem a stupid question, but with the "time" variable I really can't see the best way.

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• Where to apply these akonadi settings for mysql-server?

  - by piedro

  I Am using an external mysql-server to work with akonadi. (using KDE4). Now I could solve all problems with it, but I still have to apply some settings to the "mysql-global.conf"-file of the server. That's what is suggested for example: # wait 365d before dropping the DB connection (default:8h) wait_timeout=31536000 So I tried to change this setting via the mysql console. But it's not reflected anywhere in the /etc/mysql/my.cnf file. (etc/akondai/mysql-global.conf seems to have no effect on the mysql-server either!) My question: Where to put these (or similar) settings to apply them in a way that akonadi won't drop the connection with an external server (globally I guess?)?

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• UK Data Breaches Up by 10 fold in 10 years.

  - by TATWORTH

  At http://www.v3.co.uk/v3-uk/news/2201863/uk-data-breaches-rocket-by-1-000-percent-over-past-five-years there is an interesting report on the increase in data breaches reported in the UK.A lot of this increase may simply a change in legislation that has made reporting a statutory obligation.Some questions to ask yourself:Are server logs checked for untoward activity?Do you have a reporting policy if something is amiss?Did you design security in for the start of your application design?Do you log for example failed logons?Do you run tools to check for code integrity?Is my defense, a strategy of defense in depth?Do you realise that 60% of hack attacks are internal?Whilst SQL Injection is a problem that affects practically all application code platforms, within Microsoft Applications do you run FXCOP? Do you run any of the other free tools for checking?

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• How do i allow non-root access to /ttyUSB0 on 12.04?

  - by yurividal

  Since i updated from 10.04 to 12.04, i am unable to acces the device connected in /ttyUSB0 if i dont have root access. To be more specific, i use a usb-to-serial com port converter to acces and configure Cisco equipment with a software called Putty. It happens that, since i upgraded to 12.04, Putty only sees the connected device when i run it as "gksudo putty". If not, it says "unable to connect to port /ttyUSB0". I have managed to change the permissions via chmod 666, and it works, but if i disconnect the usb and reconnect, it goes back to root only. How do i permanently allow non-root access? I have a clue it might be via udev rules, but i have NO IDEIA how to do it. obs. Manufacturer and drivers "PROLIFIC"

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• Greenfoot project is read-only

  - by AzharHafiz.com

  I received this message when starting greenfoot on ubuntu 11.10 I'm a newbie and not sure where does the file located (greenfoot) The project is read-only.How and where do I change the permission? You will not be able to create objects or execute methods. Either the access rights of the project directory are set as 'read only' for you, or the whole file system is not writable (is it a CD?). To fully use this project, you must ensure that it is on a writable file system (usually your hard disk), and that you have write permission in the project directory and each file within it. This can often be accomplished by choosing "save as" from the Project menu after closing this dialog.

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• how can I start developing games? [closed]

  - by miguelacho

  as you may know very well, every individual related with software development is somehow related to the science or the activity that the program was made for, I am currently working as a programmer for a company that is dedicated to build enterprise software for ensurance business, before this job, I was working with a travel agency developing extra modules for the CRM they use (VTiger), so I can say I am related to ERP/CRM, the fact is, I would like to change this to another activity, like developing video games. I'd like to start developing games, by getting a job or making my own project, but: 1) I have no experience developing video games, is that an obstacle if I want to get a job? if is that so, how can I solve it? 2) if I want to make my own project I will need more people, like a graphic disigner or some others, isn't there a way to make the whole game by my own?

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• Advice on approaching a significant rearrangement/refactoring?

  - by Prog

  I'm working on an application (hobby project, solo programmer, small-medium size), and I have recently redesigned a significant part of it. The program already works in it's current state, but I decided to reimplement things to improve the OO design. I'm about to implement this new design by refactoring a big part of the application. Thing is I'm not sure where to start. Obviously, by the nature of a rearrangement, the moment you change one part of the program several other parts (at least temporarily) break. So it's a little 'scary' to rearrange something in a piece of software that already works. I'm asking for advice or some general guidelines: how should I approach a significant refactoring? When you approach rearranging large parts of your application, where do you start? Note that I'm interested only in re-arranging the high-level structure of the app. I have no intention of rewriting local algorithms.

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• Remove Border From Smiles in Post [migrated]

  - by komp smith

  Hello i am finally getting to grips with CSS after about 4 years of picking it up as i go. This problem though has had me stumped for a few hours now so ive gave up and decided to ask for some help and learn from it that way. All the smilies in my site have the img border that is for comment images. examples here- http://onlinebanter.com/node/5334 Ive already removed the border with border:none at other places in my website but i cant seem to change this. Could anyone suggest something for me? thanks

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