Search Results

Search found 7902 results on 317 pages for 'structure'.

Page 112/317 | < Previous Page | 108 109 110 111 112 113 114 115 116 117 118 119  | Next Page >

• If I use locks, can my algorithm still be lock-free?

  - by Joe Pension

  A common definition of lock-free is that at least one process makes progress. 1 If I have a simple data structure such as a queue, protected by a lock, then one process can always make progress, as one process can acquire the lock, do what it wants, and release it. So does it meet the definition of lock-free? 1 See eg M. Herlihy, V. Luchangco, and M. Moir. Obstruction-free synchronization: Double-ended queues as an example. In Distributed Computing, 2003. "It is lock-free if it ensures only that some thread always makes progress".

  Read the article

• Are "skip deltas" unique to svn?

  - by echinodermata

  The good folks who created the SVN version control system use a structure they refer to as "skip deltas" to store the revision history of files internally. A revision is stored as a delta against an earlier revision. However, revision N is not necessarily stored as a delta against revision N-1, like this: 0 <- 1 <- 2 <- 3 <- 4 <- 5 <- 6 <- 7 <- 8 <- 9 Instead, revision N is stored as a delta against N-f(N), where f(N) is the greatest power of two that divides N: 0 <- 1 2 <- 3 4 <- 5 6 <- 7 0 <------ 2 4 <------ 6 0 <---------------- 4 0 <------------------------------------ 8 <- 9 (Superficially it looks like a skip list but really it's not that similar - for instance, skip deltas are not interested in supporting insertion in the middle of the list.) You can read more about it here. My question is: Do other systems use skip deltas? Were skip deltas known/used/published before SVN, or did the creators of SVN invent it themselves?

  Read the article

• Silverlight 4 + RIA Services: Ready for Business: Updating Data in the Client

  To continue our series, lets look at updating the data.  I have created a Plates.xaml page with very similar structure to the above.    For details on how I created this page, check out my PDC 09 demo walk through.    Now lets look at updating the Plate data.. First we will create some default form UI by dragging an entity from the datasources window in much the same way we did above.  But before we create the UI, notice the order of the fields it...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

• Rythmbox library set to: multiple locations and no way to edit/change

  - by Pierre

  I previously set Rhythmbox to include a few different locations. Now following changes to my directory structure, I'd like to reflect these changes in Rhythmbox. But when I go to "Library Location", I see "Multiple locations Set" and I can only add to the list; no way to edit/remove. I Googled this problem and the only relevant results I get date back to 2006, probably referring to a previous version of Rhythmbox and specifying components/locations that I can't find on my system. Give a look at the documentation...kind of minimal. Any clues? Ubuntu 12.04 Rhythmbox 2.96

  Read the article

• How to update the USB Ubuntu (ISO) with new software

  - by nakata

  I have Peppermint (based on Ubuntu) running of USB. Its bascially an ISO image that loads using Grub4Dos. Problem is that I each time I load Ubuntu - and want to use i.e. teamviewer or Firefox...I have to install it on the running live system. Since its running from a ISO image...a reboot means the software is gone. I can edit/open the ISO image using WinImage (on XP) - would you know how I can add extra software into this ISO image so next time Ubuntu loads...the new software is on there? Is there some special repositary director where I should copy the software files into and recreate the ISO image? The directory structure of this iso image is along the lines of: .disk [BOOT] Casper dists install isolinux pool preseed Appreciate your help with this. The software I am really interested in installing is the plugin for LogMeIn (for which I may need Firefox...thus I need Firefox installation) and Teamviewer. Thanks Nakata

  Read the article

• What is the best stucture of SEO friendly URL?

  - by Aajahid

  I'm working for a website to convert the website URL to an SEO friendly URL. I plan to use this: mysite.com/category-name/pageid-123-page-name I looked at some similarly categorized, highly ranked websites. They have the same structure, except for one thing. In one case, the URL format was thissite.com/category-name/pageid-123-page-name.html Another was thatsite.com/category-name/pageid-123-page-name.php Now I know the text in URLs help with SEO. Is it more helpful to have a file extension? If yes, which one is better? Or if my current plan is okay, will it be better with a / at the end?

  Read the article

• Unused frame(window) management

  - by Serhiy

  Hey guys, I'm rewriting my game now using software designing patterns and want to do the code, most correct I can. While implementing MVC(Model View Controller) I got a question which I would like to discuss or to hear some opinions of experts. The question is about management of unused frames... For example next sequence of windows: ResourceLoadingWindow - LoginWindow - GameWindow Definetly that I don't want to reuse ResourceLoadingWindow , since I'm using Java Applet and I don't see any situation when I will need to reuse it. The different story is about LoginWindow, which can be reused a lot of times, because some player would want to Logout and come back again in few minutes for example. I would like to know, following the MVC structure, should I destroy window, removing it from ContentPane or just hide? Maybe I need to unregister it from controller or I shouldn't do so? Thanks in adavance.

  Read the article

• How can I apply Readme Driven Development to an ongoing project?

  - by Metalcoder

  I'm assigned to a project where the goal is to update an existing software. This software was developed in a totally ad hoc manner, which means that any documentation generated is outdated, confused and just plain useless. I do not want to retroactivelly produce all the missing artifacts, since this would just be a waste of time. The code base is ugly, and really need some serious refactoring, but this is another story. What I want is to apply Readme Driven Development to guide this project. So, basically, I want to write a Readme, which will document every change meaningful at the user level. The problem is, I have no idea about how to structure this document. For me, it's pretty clear that it should have a different layout than the traditional Readme. I really want to document changes, and not the current state of affairs. Any ideas?

  Read the article

• CLI Shared Hosting Management (scripts to manage web users and hosts) [on hold]

  - by aularon

  I am currently administrating two servers: first one has no control panel, I am creating directory structure, setting permission, configuring different aspects (users/php-fpm pools, nginx hosts..) for each of sites. With more clients, I sat up ISPConfig on my second server, everything is easily handled by ISPConfig Web Interface. However, I am searching for a CLI based solution, i.e. a set of scripts to create and manage hosts. Basically, a method to control ISPConfig from the command line (so I can use it over SSH) would be a good start. Does anybody know of such effort? I searched but all I got was web based solutions. Thanks.

  Read the article

• Does having over 80% dynamic and rapidly changing content affect SEO?

  - by webmasters

  I have a website that pulls promotions of products from other website. My index page has a structure similar to this: My Brand - Best Promotions Looking for great deals? Check out our top promotions A menu - listing the promotions categories 20 of the latest promotions (the best ones): I list an image; Promotion description (200 chars); Link to the promotion page. Question: More then 80% of my index page (maybe even 90%) is composed of the 20 promotions I list; these promotions change on a daily bases - which dramatically changes the content of my index page. Does the dynamic changing of the index page affect SEO? Should I try to add more static text where I can? (which won't change) Ty

  Read the article

• How does Google store search trends in backend?

  - by Achshar

  Google trends shows what query has been searched how many times and some other properties of the said query. But how is this data stored in a database? Storing a new row for every search does not seem right. They also tell the query on a time graph, so they must have some way to look for individual searches made by users, but the number of queries they get every day, it does not feel right that they would store every search in a database row along with a time-stamp. This does not apply to just Google trends or Google in general but any other big site that gets awful number of queries and then has tools to see them in depth. I am not an expert on this but I am interested to know some high level structure of how things work behind the scenes.

  Read the article

• Subdomains vs. URL Path in shareable links

  - by Adam Matan

  I am building a web application for questions and answers. Each question/answer page has all the required metadata for Facebook and Twitter, and we encourage users to share these pages. I have a dilemma regarding the shared link structure: Option 1 - subdomains Use a questions.example.com and answers.example.com, followed by an ID and optional text. The text is ignored by the request, which only takes the id into account. http://questions.example.com/<question_id>/<question_text> http://questions.example.com/12345/how-long-is-the-queue # Example http://q.example.com/12345 # Example Option 2 - URL path This is the format used by stackoverflow.com and trello.com: http://example.com/questions/<question_id>/<question_text> http://example.com/questions12345/how-long-is-the-queue # Example http://example.com/q/12345 # Example Server-wise, I can easily do both - I have a wildcard SSL certificate and Apache/NGinx configuration is pretty straightforward. Which option - subdomains or URL path - is preferred for shareble links?

  Read the article

• The Path to Best-In-Class Service Business Performance

  - by Charles Knapp

  What would it matter to offer your customers best-in-class service and support experiences? According to a new study, best-in-class companies enjoy margins that are nearly double the average, retain almost all of their customers each year, deliver annual revenue growth that is six greater than average, and realize cost decreases rather than increases! What does it take to become best in class? Some of the keys are: Engage customers effectively and consistently across all channels Focus on mobility to improve reactive service performance Continue to transition from primarily reactive to proactive and predictive service performance Build the support structure for new services and service contracts Construct an engaged service delivery team Join the Aberdeen Group, Oracle, Infosys, and Hyundai Capital as we highlight the key stages in the service transformation journey and reveal how Best-in-Class organizations are equipping themselves to thrive in this new era of service. Please join us for "Service Excellence and the Path to Business Transformation" -- this Thursday, October 25, 8:00 AM PDT | 11:00 AM EDT | 3:00 PM GMT | 4:00 PM BST.

  Read the article

• Global Knowledge présente ses nouvelles formations sur le Cloud pour développeurs, DSI, chefs de projets, consultants ou architectes réseaux

  Global Knowledge présente ses nouvelles formations sur le Cloud Pour développeurs, DSI, chefs de projets, consultants ou architectes réseaux Global Knowledge, le centre de formation continue en informatique et management, vient d'ajouter de nouveaux cours sur le Cloud Computing à son catalogue de formations. On y trouve d'une part, un cursus certifiant de 21 jours conçu en partenariat avec Centrale Paris. Et d'autre part, un catalogue complet et structuré allant des fondamentaux (comprendre le Cloud Computing), à la conception d'une architecture ou encore la mise en oeuvre des solutions techniques comme la virtualisation. Elles s'adressent donc à un public la...

  Read the article

• When Google gives up recrawling 301 that led to 404?

  - by Easy Life

  I've transferred a domain and made a mistake in the redirects (the URL structure is identical). Even though they went to the new domain, the error caused a 404 when crawled by Google bot. 10 days after I saw and corrected my redirect mistake, and now the site should (hopefully) redirect to proper pages. Q1: The URLs of the 404 pages in the Webmaster Tools all bear the mistake and will never be available at the new site. I marked them as fixed in the tools. Do I need to do something about that, like 301 rewrite them with a condition to fix the error? Q2: Does Google bot attempt to recrawl 301 pages that pointed to a 404?

  Read the article

• Search and Replace in MVC

  - by danip

  What would be a good MVC/OOP/GRASP/SOLID structure for a search/replace functionality. Methods: search/searchNext/replace/replaceAll. I'm interested only in the PHP arhitecture and how a professional developer would implement this in it's OWN FRAMEWORK. What names would you use for the classes? What subfolders would you used in your MODEL folder? How would you connect the MODELS/CONTROLLER? This is just a arhitecture question to understand better the principles of good OOP in practice. My current implementation is very simplistic using a service model: /controller/SearchReplaceController.php /models/services/SearchReplaceService.php The problem with this is I know I'm breaking SRP in the service but I found this somehow acceptable. Also creating a service does not feel like the best solution for this.

  Read the article

• 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.

  Read the article

• I need to create an employee schedule/appointments program, but I don't know how to set it up

  - by robz228

  I work for a gym. I am the programmer, its just me, nobody else! Gets really frustrating when there's nobody to bounce conceptual ideas off of. I'm getting rid of our archaic paper binder systems for tracking appointments and what not. I've made a lot of things successfully already, now I'm trying to tackle the personal training department. What I want: Trainer information and work schedule Appointment booking that can be done by time slot with all available trainers for that time, or by trainer with all available hours for that trainer What I've tried so far: I started with an 'appointments' database, a 'trainers' database, and a 'schedules' database. This became so complicated trying to fit the schedule in that I scrapped it. Does anyone know know the best way to structure the tables for this and how to sort of make them communicate correctly? I don't need specific code, I just need help understand how to make this thing!

  Read the article

• Keeping application backend and UI synchronised

  - by Deanna

  Hi all. I have an app that works with a list of objects so has one central keyed list. The main window has a tree containing these object with some information, which is easy enough to populate as a one off event after loading. Now, the complicated part, any part of the application can add, remove, and more importantly change the details of those objects at any time (all in the same process) and I'd like the tree to update to suit. I have a few options including passing events back down from the object to the list to the form which seems to be the most flexible way. I can also do it lazily and repopulate the tree each time or periodically (very hackish). Does anyone have any better thoughts on how to structure this? This is being done in C# 2.0 but the concepts apply to any environment. Thanks

  Read the article

• Avoid Code Repetition in Condition Statements

  - by Ethosik

  I have been programming for over 15 years now. I consider myself a very good programmer, but I understand (like all of us) there are things that I need to work on. One of these things is code repetition when dealing with conditions. I will give a generic sample: if(condition1) { //perform some logic if(condition2) { //perform some logic if(condition3) { //Perform logic } else { //MethodA(param) } } else { //MethodA(param) } } else { //MethodA() } Now, I cannot make it easy by doing the following: if(condition1 && condition2) { } else { } I cannot do this since I need to perform some logic if condition1 is true and before I test condition2. Is there a way to structure if...else blocks to where if you need to call a method in each else blocks, you are not repeating yourself?

  Read the article

• Upgrade to 11.10 left me with Kmail not working

  - by user86186

  On my way from 10.10 to 12.04 I chose to do the step by step (11.04 then 11.10 then 12.04) because I could not figure if I should do that or a direct install of 12.04LTS. After the first step (11.04) all was well. The next day I upgraded to 11.10. Now I seem to have lost my data in KOrganizer and all of my email history in KMail. KMail still has my email accounts but my tree structure of folders is missing as is all of the emails that should be there. Also, when KMail opens I get the following: KMail encountered a fatal error and will terminate now. The error was: Failed to fetch the resource collection. Clicking OK closes KMail. KAlarm appears OK and my browser history is still in place as are various data files. What to do??

  Read the article

• Implement an FTP server (no threads) - how to start?

  - by ironicaldiction

  As a semester project, I have the following specification: Write a simple single threaded ftp server. The ftp server is configurable from a configuration file. The config allows to set the interface (where the server listens), the roots of the served content, transfer log, and database of users and its passwords. The server allows to create a virtual filesystem. By a virtual filesystem, we mean a mapping of a served directory to the real directory on the filesystem. For example, the client tree will look like: /home/user1 maps to /mnt/x/home/user1 /www maps to /var/cache/www /home/user_list.txt maps to /var/ftpclient/user_list.txt The user will see /home/user1 directory and /www directory and the file /home/user_list.txt The course is in C++. The projects to this point have provided a lot of structure, such as a class header file to get you started on the program. My question is this: how can I get started on what seems like quite a massive project (I have 3 weeks to return a working implementation)?

  Read the article

• Making Separate Assemblies For Different Types Of Tests For The Same Component?

  - by sooprise

  I was told by a few members here that splitting up my unit tests into different assemblies for different components is the best way to structure unit tests. Now, I have a few questions about that idea. What are the advantages of this? Organization, and isolation of errors? Let's say I have a component named "calculator", and I create an assembly for the unit tests on "calculator". Would I create a separate assembly for the integration tests I want to run on "calculator"? Or is the definition of an integration test a test across multiple components, like "calculator" and whatever else, which would require a separate assembly to test both of them together? In that case, would I have one assembly to do all of the integration testing for every component combination?

  Read the article

• Random List of numbers in C

  - by Ant

  I have just started a C programming course and so far have only done the basics like printf, read a little on variables etc on the course book. The teacher has tasked us with writing a program that will take a value entered by the user, this will be the number of students in the class (25 at the moment but can be variable). It will then list the number of students randomly and place them in 3 columns. The purpose is to sort students into groups of 3 randomly, then display on the screen in columns. Now my question is not for the code that defeats the object of me attempting the exercise, but how to structure it. I can see that using an array can be used to display the list, but really after some pointers on how best to approach the problem in blocks, then I can attempt to program each block.

  Read the article

• Testing complex compositions

  - by phlipsy

  I have a rather large collection of classes which check and mutate a given data structure. They can be composed via the composition pattern into arbitrarily complex tree-like structures. The final product contains a lot of these composed structures. My question is now: How can I test those? Albeit it is easy to test every single unit of these compositions, it is rather expensive to test the whole compositions in the following sense: Testing the correct layout of the composition-tree results in a huge number of test cases Changes in the compositions result in a very laborious review of every single test case What is the general guideline here?

  Read the article

< Previous Page | 108 109 110 111 112 113 114 115 116 117 118 119  | Next Page >