Search Results

Search found 5469 results on 219 pages for 'compare and swap'.

Page 88/219 | < Previous Page | 84 85 86 87 88 89 90 91 92 93 94 95  | Next Page >

• Preparing yourself for Code challenges

  - by Daniel Fath

  Just a few days ago I discovered Codility, and I tried their challenges. And I must say. I got my behind handed to me on a platter. I'm not sure what the problem was, but I'll lick my wounds and wait for the solution to come out and compare it with my own. In the meantime, I want to get ready for the next challenge so I'm reading their previous blog posts and seeing how to solve their previous problems. There are a lot of new things I haven't heard about like (Cartesian trees, various sort algorithms, etc.) So, how does one prepare for such challenges (especially the O(x) time and space complexity). What should I read to prepare for such a task?

  Read the article

• Industry average percentage of dev salary spent on tooling? [on hold]

  - by RationalGeek

  I'm trying to budget for my dev shop and compare our budget items to industry expectations. I'm hoping to find some information on what percentage of a dev's salary is generally spent on tooling, both hardware and software. Where can I find such information? If instead there is a source that looks at raw dollars that is useful, too. I can extrapolate what I need from that. NOTE: Your anecdotal evidence from your own job will not be very helpful. I'm looking for industry average statistics from a credible source.

  Read the article

• ubuntu is not booting, after dual boot installation with windows 7

  - by Kranthi

  Recently i bought a lenovo u410 ultrabook. It has given along with windows 7 and 4 primary partitions. So to install ubuntu 12.04 i removed one of the primary partition and made it as extended partition. In that extended partition, i allocated memory for the swap and root (/) directory and then installed the ubuntu. After that by using EasyBCD tool, added ubuntu to the boot menu in grub2. So when i try to boot into ubuntu it is showing grub prompt only. From there how can i boot into ubuntu. Thanks in advance

  Read the article

• How do I optimize searching for the nearest point?

  - by Rootosaurus

  For a little project of mine I'm trying to implement a space colonization algorithm in order to grow trees. The current implementation of this algorithm works fine. But I have to optimize the whole thing in order to make it generate faster. I work with 1 to 300K of random attraction points to generate one tree, and it takes a lot of time to compute and compare distances between attraction points and tree node in order to keep only the closest treenode for an attraction point. So I was wondering if some solutions exist (I know they must exist) in order to avoid the time loss looping on each tree node for each attraction point to find the closest... and so on until the tree is finished.

  Read the article

• Java vs COBOL programming examples

  - by Jodi

  I am a COBOL programmer, desperately trying to learn and program Java. Although I understand the OO priciples and concepts, I am at a lost putting all together. I am trying to find some examples on how code will look in COBOL vs Java - something a bit more complicated than "hello world" [I am past that initial headache! :-)], that includes OO principles - basically, a decent 1000+ liner in COBOL, with the Java code to work through. After working through book after book, doing the examples, and even writing small java programs at work, I think working through an example I can compare will be the best way to getting my thinking cap converted, and being able to do in Java what I can do after 10 years with COBOL. Can anybody help?

  Read the article

• What is the difference between all-static-methods and applying a singleton pattern?

  - by shahensha

  I am making a database to store information about the users of my website (I am using stuts2 and hence Java EE technology). For the database I'll be making a DBManager. Should I apply singleton pattern here or rather make all it's methods static? I will be using this DBManager for basic things like adding, deleting and updating User profiles. Along with it, I'll use for all other querying purposes, for instance to find out whether a username already exists and to get all users for administrative purposes and stuff like that. My questions What is the benefit of singleton pattern? Which thing is most apt here? All static methods or a singleton pattern? Please compare both of them. P.S. The database is bigger than this. Here I am talking only about the tables which I'll be using for storing User Information.

  Read the article

• Initialize array in amortized constant time -- what is this trick called?

  - by user946850

  There is this data structure that trades performance of array access against the need to iterate over it when clearing it. You keep a generation counter with each entry, and also a global generation counter. The "clear" operation increases the generation counter. On each access, you compare local vs. global generation counters; if they differ, the value is treated as "clean". This has come up in this answer on Stack Overflow recently, but I don't remember if this trick has an official name. Does it? One use case is Dijkstra's algorithm if only a tiny subset of the nodes has to be relaxed, and if this has to be done repeatedly.

  Read the article

• How to configure screens in console or create screen configuration profiles?

  - by uncle Lem

  I have two monitors and integrated GPU (Intel® HD Graphics 4600). It works fine for work or movies, but if I launch games in fullscreen mode - I get artifacts, glitches and so on. Temporary disabling second monitor solve this problem, but then I have to enable it back, and set its properties manually (by default, additional screen attaches its left-top corner to main monitor's right-top corner, but I need it to be left-bottom and right-bottom corners). So I need some kind of automatization here. Best option - tool to create and swap between some kind of config profiles. Or, maybe, some console manipulations which I can put into script files would be fine too. (Ubuntu 13.04, if it matters)

  Read the article

• How to auto mount partition on startup xubuntu?

  - by Bas

  I want to auto mount all my partitions on startup. But i can't get it to work as i'm new to xubuntu. This is how my fstab file looks like: proc /proc proc nodev,noexec,nosuid 0 0 #Entry for /dev/sda1 : UUID=3bf842ea-923b-43fe-b5f9-066fc920aaec / ext4 errors=remount-$ #Entry for /dev/sdb1 : UUID=F0C859BDC8598330 /media/Bas ntfs-3g defaults,locale=en_US.UTF-8 $ #Entry for /dev/sda3 : UUID=146213A76D02F7AD /media/sda3 ntfs-3g defaults,locale=en_US.UTF-8 $ UUID=1C33A98704D941F1 /media/sda3 ntfs-3g defaults,locale=en_US.UTF-8 $ #Entry for /dev/sda5 : UUID=ba48c631-5652-4ce7-85a3-bda96b353ca7 none swap sw 0 $ The last line I added myself but it's not working. I spend the whole day trying to figure this out without success. So can anyone help me with this? Thanks in advance

  Read the article

• How To Track "Similar Product/Page" Links In Internal Site

  - by Petra Barus

  So I just created a new widget that would show up in a product page in my site. This widget will show several products similar to the product that is displayed in the current page. The purpose is to help users compare similar products. Let's say in the product page A http://domain/products/A The Similar Products widget will show http://domain/products/B http://domain/products/C http://domain/products/D http://domain/products/E My question is how to track this "Product B page were visited X times from Product A page via Similar Product widget"? (And there is also chance that Product B will show up in the widget on Product C page) I have this idea using the Event feature from Google Analytics. But I'm still not sure if it is or what is the common best practice for this.

  Read the article

• How can I disable the prefetch cache?

  - by Oli

  I run a few Ubuntu servers that have a load of django sites running on them. The sites and the httpd start at boot and after that (apart from me SSHing in to update it or using bzr to update websites) nothing else gets run on it. At the moment over half the ram is allocated as cache. This isn't a problem because cache usually makes space or a little bit of it slips into swap (again, this doesn't really bother me) but I don't see the need for it. Is there a quick way to disable the cache? This is more of an experiment than anything else so it would be handy to know how to turn it back on again.

  Read the article

• grub not detecting windows 8

  - by Satyajit B M

  I have a dell inspiron 5520. I had installed windows 8 and have ubuntu 12.04 installed in a different partition. I installed grub but it was not showing windows 8. So i added menuentry "Windows 8" { set root = "(hd0,4)" chainloader +1 } in /etc/grub.d/40_custom. Now i see windows 8 option but it says "error-invalid selection" when i select it. please help. This is the op of fdisk -l command /dev/sda1 * 16072 626807 305368 de Dell Utility /dev/sda3 7645184 500201471 246278144 7 HPFS/NTFS/exFAT /dev/sda4 500203518 976771071 238283777 f W95 Ext'd (LBA) Partition 4 does not start on physical sector boundary. /dev/sda5 500203520 870275071 185035776 7 HPFS/NTFS/exFAT /dev/sda6 870277120 886276095 7999488 82 Linux swap / Solaris /dev/sda7 886278144 976771071 45246464 83 Linux

  Read the article

• Google n'a pu vendre que 135.000 exemplaires de Nexus One après 74 jours de son lancement, selon une

  Mise à jour du 17/03/10 (djug) Google n'a pu vendre que 135.000 exemplaires de Nexus One après 74 jours de son lancement, selon une étude de Flurry Si l'on croit les estimations du cabinet d'analyse Flurry, Google n'a pas pu vendre que 135.000 exemplaires du Nexus One durant 74 jours, un chiffre faible si on le compare aux ventes de ces concurrents directes, l'iPhone d'Apple et le Droid (Milestone) de Motorola. [IMG]http://djug.developpez.com/rsc/Flurry_n1.JPG[/IMG] Sur une période de 74 jours, l'iPhone s'est vendu à 1 million d'exemplaire lors de son lancement en 2007, tandis que le Droid de Motorola s'était écoulé à plus de 1.05 mill...

  Read the article

• What is the correct way to implement hit detection with non-rectangular sprites?

  - by hogni89

  What is the correct way to implement hit or touch detection for non-rectangular sprites in Cocos2d? I am working on a jigsaw puzzle, so our sprites have some strange forms (jigsaw puzzle bricks). As of now, we have implemented the "detection" this way: - (void)selectSpriteForTouch:(CGPoint)touchLocation { CCSprite * newSprite = nil; // Loop array of sprites for (CCSprite *sprite in movableSprites) { // Check if sprite is hit. // TODO: Swap if with something better. if (CGRectContainsPoint(sprite.boundingBox, touchLocation)) { newSprite = sprite; break; } } if (newSprite != selSprite) { // Move along, nothing to see here // Not the problem } } - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event { CGPoint touchLocation = [self convertTouchToNodeSpace:touch]; [self selectSpriteForTouch:touchLocation]; return TRUE; } I know that the problem is in the keyword "sprite.boundingBox". Is there a better way of implementing this, or is it a limitation when using sprites based on .png's? If so, how should I proceed?

  Read the article

• Ubuntu 12.10 install freezes at configuring hardware

  - by Max Keener

  I'm installing Ubuntu 12.10 (64 bit) from a bootable USB stick. At first I had trouble with a black screen after selecting 'install ubuntu'. I added nomodeset and xforcevesa to the options to fix that problem. Now when installing, it hangs at 'Configuring Hardware', specifically at ubuntu ubiquity: update-initramfs: Generating /boot/initrd.img-3.5.0-17-generic Specs: Asus UX32a DB51 Intel Core i5 3317U 1.7 GHz 4GB DDR3 RAM intel hd 4000 graphics 500 GB harddrive with 25 GB sandisk ssd I'm trying to install Ubuntu by itself right now on the SSD. I made custom partitions (100 mb EFI boot partition, 4GB swap space, 20GB ext4 mounted on '/') I've tried re-downloading the ubuntu iso and creating a new boot image on my flash drive and it results in the same problem. Thanks in advance for the help!

  Read the article

• Mise à jour : les statistiques Xiti de Developpez confirment les résultats d'AT Internet, sur la progression de Bing en Europe

  Recherche en ligne : Bing gagne du terrain en Europe Selon AT Internet D'après les derniers résultats du baromètre mensuel d'AT Internet , le moteur de recherche de Microsoft, Bing, serait en train de gagner du terrain en Europe. Le classement du top 5 des moteurs dans 5 pays d'Europe au cours du mois de février montre que Bing a gagné respectivement 0.4 et 0.3 point en Espagne et en France comparé à janvier 2011. En Allemagne, le moteur de Microsoft affiche une hausse de 0.2 point. Enfin, après avoir partagé la seconde position du top 5 britannique avec Yahoo! le mois dernier, Bing le relègue sévèrement à la 3ème position avec un écart de 0.7 point en part de visites (gain de 0....

  Read the article

• Database Development and Source Control

  - by Enrique Lima

  I have been working with Database Development and the aspects that come with it, the pain and the joy of moving from Dev to QA and then on to Production.  Source Control has a place in Dev, and that is where the baselines should be established. Where am I going with this? I have been working with Redgate’s Source Control 3.0, and I am seeing some features that are great for the process of moving from Dev to … well something that allows for quite a level of control.  We are not only talking about scripting the structure of a database, but creating a baseline, working with migration scripts, and integrated with Redgate’s Schema Compare.  There is a detailed paper that will be posted here in the next day or so to provide step by step information of the process to define your baseline in Dev and then take it to the desired destination. In the meantime, check the Webinars Redgate has regarding this process and products.

  Read the article

• How do I save to an NTFS partition?

  - by RADHAKRISHNAN

  I was using ubuntu 11.04 on my Laptop. While installing it from a DVD, I have created a 10 GB NTFS partition at the beginning of the hard disk, as primary. All other partitions ( swap, a ext3, a ext4 and a FAT32 ) are created in as logical in the extended partition. All were working well in ubuntun11.04. Now the system was upgraded to ubuntu 11.10 via internet and was sucessful. But unable to either create folder/files or to write to existing files in the said NTFS partiton. But files in the partition can read - means mounting done. Same is the case even if logged in as root also. Fortunately no such problem with other partitions including FAT Why it is so, please help.

  Read the article

• Best platform for android and ios game?

  - by LoveMeSomeCode

  Ok, this has been asked before, but not recently, and most of the answers were just 'buy a mac'. So we're a couple guys who've been making small flash games, and now we want to go mobile, and there seem to be lots of options. Does anyone here have experience with one or more of these platforms to tell us the pros and cons of each? Corona AIR 3 Rhodes Could someone with experience compare and contrast these to each other and native development? We want to cast the widest net with the least re-work so we'd like to target just Android and iPhone, and we'd like it to be an actual app in the market instead of just a mobile website. We have experience in Actionscript, Javascript, and C#.

  Read the article

• How to eliminate an old Ubuntu partition?

  - by GUI Junkie

  I installed Ubuntu 12.04 64-bit side by side with my previous 11.10 32-bit. As everything is working correctly, I want to eliminate the old partition. According to update-grub: Found Ubuntu 11.10 (11.10) on /dev/sda1 But according to GParted, /dev/sda1 is the boot partition! So, how can I discover which partition should be the boot partition for 12.04? Can I safely eliminate the /dev/sda1? Also, GParted gives /dev/sda5 as file system unknown, it's 2.93Gib and might be the swap partition (just guessing).

  Read the article

• Dropdowns revisited

  For my DIBI presentationI need a dropdown menu (in order to compare it on desktop and mobile), so I wrote one.Point is, it took me thirty lines of JavaScript, nine of which only contain a closing },and three of which deal with the fact that bloody Firefox still doesn’t support contains().Net amount of lines: 18. Can somebody please remind me why we all used to think dropdownsare so extremely complicated? I can’t for the life of me figure it out.window.onload = function () { document.getElementById('dropdown').onmouseover...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

  Read the article

• Application for taking pretty screenshots (like OS X does)

  - by Oli

  I've been building a website for a guy who uses Mac OS X and occasionally he sends me screenshots of bugs. They come out looking like this: This is fairly typical of Mac screenshots. You get the window decorations, the shadow from the window and a white or transparent background (not the desktop wallpaper -- I've checked). Compare this to an Ubuntu window-shot (Alt+Print screen): It's impossible to keep a straight face and say the Ubuntu one anywhere near as elegant. My question is: Is there an application that can do this in Ubuntu? Edit: Follow up: Is there an application that can do this in one move? Shutter is pretty good but running the plugin for every screenshot is pretty tiresome as it doesn't seem to remember my preference (I want south-shadow and that requires selecting south, then clicking refresh, then save) and it's more clicks than I'd like. Is there a simple way of telling shutter I want south-shadow for all screenshots (except entire desktop and area-selection)?

  Read the article

• Cannot resume from hibernate (s2disk)

  - by hwjp

  I seem to be able to hibernate OK using s2disk, but when I switch the laptop back on, it seems to hang half-way through the "resuming" menu. The splash screen looks healthy, it seems to be trying to resume from the correct disk, but it hangs about half-way through, with three little pips. One great help would be - where can I find the logs, and how do I get more verbose ones? There is some info in /var/log/pm-suspend.log, but that all seems fine, just lots of hibernate: success messages... How do I switch on more verbose logging in s2disk? And what about the resume process, where are the logs for that, and how can I make them more detailed? Background: the standard Ubuntu hibernate wouldn't work, so I've install uswusp and its associated tools - s2disk etc. That initially made things worse, but a fair amount of fiddling with its config, my swap size and so on seem to have got it at least seemingly successfully suspending...

  Read the article

• How large should I make root, home, usr, var, and tmp partitions?

  - by Teddy Okidoki

  i install ubuntu server 10.04, have 64 Gb VHD. And want to separate partitions in this mode: /dev/xvda0 p on swap (2 Gb) /dev/xvda1a0 e on /boot (128 Mb) /dev/xvda1a1 e on / type ffs (local) /dev/xvda1a2 e on /usr type ffs (local, nodev) /dev/xvda1a3 e on /tmp type ffs (local, nodev) /dev/xvda1a4 e on /var/log type ffs (local, nodev) /dev/xvda1a5 e on /var type ffs (local, nodev, nosuid) /dev/xvda1a6 e on /home type ffs (local, nodev, nosuid, with quotas) /dev/xvda2 p on /new (local, nodev, nosuid, noexec) with rest of space ~50Gb. But i'ma stuck, and don't know what size to give to each folder. Also i want to encrypt partitions. Thank you for any tips. EDIT: System need minimum size, here will be installed about 10 apps like ufw, apache,mysql, chkrootkit and so on.

  Read the article

• Odd issue,Wubi Installation won't boot, when another ext4 drive is plugged?

  - by Uri Herrera

  It's an odd issue, i installed Ubuntu 11.04 trough Wubi yesterday,it actually worked unlike the last time i tried to when it didn't boot at all. But there is one thing that bugs me, see, i have 2 HDD's ,a 320GB one with Windows 7, and the other, a 500GB HDD with Ubuntu 10.10. I have partitioned the 500GB HDD, and contains a NTFS partition, and a EXT4 plus the Swap partitions. The 320GB is not partitioned, as it only has Windows 7. Since i installed Wubi on Windows 7, when i have my Ubuntu drive connected, Wubi won't boot the installation, giving me a "no wubdir" error. However, if i phisically unplug the Ubuntu drive, then Wubi boots just fine. So, how is the Ubuntu drive interfering with Wubi, to the extent of Wubi not even working when the drive is plugged?.

  Read the article

< Previous Page | 84 85 86 87 88 89 90 91 92 93 94 95  | Next Page >