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• Naming conventions for newtype deconstructors (destructors?)

  - by Petr Pudlák

  Looking into Haskell's standard library we can see: newtype StateT s m a = StateT { runStateT :: s -> m (a, s) } newtype WrappedMonad m a = WrapMonad { unwrapMonad :: m a } newtype Sum a = Sum { getSum :: a } Apparently, there (at least) 3 different prefixes used to unwrap a value inside a newtype: un-, run- and get-. (Moreover run- and get- capitalizes the next letter while un- doesn't.) This seems confusing. Are there any reasons for that, or is that just a historical thing? If I design my own newtype, what prefix should I use and why?

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• Les CPU monocoeur des smartphones et tablettes sont-ils assez puissants ? NVIDIA souhaite mettre plus de coeurs dans ces appareils

  Les CPU monocoeur des smartphones et tablettes sont-ils assez puissants ? Non répond Nvidia, qui souhaite implémenter plus de coeurs dans ces appareils Pour Nvidia, "les processeurs dual-core seront le standard en 2011, et les quad-core ne tarderont pas à suivre". L'entreprise trouve en effet que les appareil mobiles, actuellement équipés de puces à un seul coeur, ne sont pas assez puissants. Pourtant, on leur en demande toujours plus, notamment de nos jours avec l'arrivée des jeux en 3D ; qui sont plutôt gourmands. Face à cela, Nvidia propose d'ajouter des coeurs supplémentaires dans les circuits de ces machines. Les bénéfices ? Une durée de vie des batteries allongée, et l'e...

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• Acer Extensa 5620 - Graphic unknown!

  - by Nycxzon

  I install Ubuntu 12.04 Beta 2, I found out the my graphic driver is "Unknown" and experience is "Standard". Please help me know how to install my graphic driver. as per my laptop specs: Mobile Intel GM965 Express Chipset with integrated 3D graphics, featuring Intel Graphics Media Accelerator (GMA) X3100 with up to 358/3845 MB of Intel Dynamic Video Memory Technology 4.0 (8 MB of dedicated system memory, up to 350/3765 MB of shared system memory), supporting Microsoft DirectX 9. Hope you can help me! Thanks in advance! Noob @ Ubuntu :) Updates! ______________ I found a solution! I found a site where I ask how to check the graphic of my system. by using terminal command "glxinfo" command ask me to install mesa-utils! and update. After that, My graphic driver is listed! Thanks for your continues support! :)

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• Who makes laptops for Ubuntu?

  - by Tim Lytle

  I'm looking for a laptop and would like to avoid the whole 'is this [specific configuration of hardware] compatible with Ubuntu?' process by finding a laptop manufactured with Ubuntu in mind. I know of system76, but are there any other manufacturers making laptops built to run a standard build of Ubuntu? I'm not counting Dell, as - from my experience - their 'Ubuntu' laptops/netbooks require their build, and because of that have their own set of compatibility issues. UPDATE: And as mentioned in the comments, Dell is no longer selling systems with Ubuntu to consumers.

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• What modern alternatives to Numerical Recipes exist?

  - by Stewart

  In the past, the Numerical Recipes book was considered the gold standard reference for numerical algorithms. The earliest Fortran Edition was followed by editions in C and C++ and others, bringing it then more up-to-date. Through these, it provided reference code for the state-of-the-art algorithms of the day. Older editions are available online for free nowadays. Unfortunately, I think it is now mostly useful only as a historic tome. The "software engineering" practises seem to me to be outdated, and the actual content hasn't kept pace with the literature. What comprehensive yet approachable references should the modern programmer look at instead?

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• Automate XML : Xproc devient une recommandation du W3C

  Automate XML : Xproc devient une recommandation du W3C Depuis le 11 mai, les technologies XML peuvent enfin compter dans leur rang un standard consacrer à la production de XML. Xproc est un langage permettant de décrire les différentes étapes d'une chaîne de production de XML. On savait inclure des XML avec Xinclude, faire des liens avec Xlink,poser des conditions en Xpath,valider en XML Schema,requêter en Xquery, transformer en XSLT, ce nouveau langage vous permettra enfin d'organiser et d'automatiser ces différentes opérations (et bien d'autres...) en les séquençant et les conditionnant . Il a toujours été possible de programmer ces différentes opérations,de les combiner, mais aujourd'hui vous dipos...

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• Attention All Procurement Buyers!

  - by LuciaC

  Have you discovered the power of the Buyer Work Center?   Released in Procurement 12.0 the Professional Buyer Work Center (BWC) is a web based interface that provides a central 'launch pad' from which you can efficiently perform your daily tasks, including:  You can manage your requisitions and create them to Purchase Orders (like manual autocreate) Create new standard purchase orders, blanket purchase agreements, or contract purchase agreements Create and maintain supplier information If Oracle Sourcing is licensed and implemented, you can create buyer's auctions or sourcing RFQs If Oracle Services Procurement is licensed and implemented you can create and maintain purchase orders for complex work payments If Oracle Procurement Contracts is licensed and implemented you can handle author contract terms and manage deliverables Globally for the BWC: Create and personalize your own document views including list of columns, where conditions and sort sequences. You can additionally use predefined document views. Accessed from the Purchasing responsibility as we see in the screenshot here, the Buyer Work Center has links to launch to the areas you want to access. See these documents for more information on the BWC: Doc ID 1301969.1: FAQ - Buyer Work CenterDoc ID 1394392.1: Assistant: Oracle Purchasing Purchasing Buyer Work Center Search Helper.

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• Oracle sort ADF Essentials, une version gratuite de son Framework MVC de développement Java

  Oracle sort ADF Essentials une version gratuite de son Framework MVC de développement Java Oracle a publié une version gratuite de son Framework de développement Java ADF (Application Development Framework). Oracle ADF est une plateforme de développement reposant sur le standard JEE (Java Enterprise Edition) et les technologies open source, permettant de simplifier et accélérer la mise au point d'applications orientées services. ADF est basé sur l'architecture MVC (Model View Controller) et implémente par défaut des routines couramment utilisées comme l'authentification utilisateur, des couches de sécurité, etc. Le Framework est utilisé en interne par Oracle pour plusieurs de se...

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• Handle all authentication logic in database or code?

  - by Snuffleupagus

  We're starting a new(ish) project at work that has been handed off to me. A lot of the database sided stuff has been fleshed out, including some stored procedures. One of the stored procedures, for example, handles creation of a new user. All of the data is validated in the stored procedure (for example, password must be at least 8 characters long, must contain numbers, etc) and other things, such as hashing the password, is done in the database as well. Is it normal/right for everything to be handled in the stored procedure instead of the application itself? It's nice that any application can use the stored procedure and have the same validation, but the application should have a standard framework/API function that solves the same problem. I also feel like it takes away the data from the application and is going to be harder to maintain/add new features to.

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• Point me to info about constructing filters (of lists)

  - by jah

  I would like some pointers to information which would help me understand how to go about providing the ability to filter a list of entities by their attributes as well as by attributes of related entities. As an example, imagine a web app which provides order management of some kind. Orders and related entities are stored in a relational database. And imagine that the app has an interface which lists the orders. The problem is: how does one allow the list to be filtered by, for example:- order number (an attribute) line item name (an attribute of a n-n related entity) some text in an administrative note related to the order (text found in an attribute of a 1-1 related entity) I'm trying to discover whether there is something like a standard, efficient way to construct the queries and the filtering form; or some possible strategies; or any theory on the topic; or some example code. My google foo fails me.

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• Google Site Search (commercial) not indexing files in sitemap

  - by melat0nin

  I have a client for whom we have purchased Google Site Search. It works well for HTML pages served by the CMS, but files aren't being reliably indexed. I wrote a script to generate an XML feed (sitemap) of all the files in the CMS which I've plugged in to Google Webmaster Tools for the site. It says that for that sitemap 923 URLs have been submitted, but only 26 have been indexed. The client relies heavily on searching within files, which is why we decided to use Google search, so this is a bit of a problem. Many of the files aren't linked to from any page on the site, as they are old and therefore don't merit having a page of their own. But they still need to be accessible through search for archiving purposes. The file archive xml can be found at www.sniffer.org.uk/file-archive and the standard xml sitemap (of pages) can be found at www.sniffer.org.uk/sitemap.xml. Any thought would be much appreciated!

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• Why do consoles have so little memory compared to classic computers?

  - by jokoon

  I remember the Playstation having 2MB ram and 1MB graphic memory. The Playstation 3 now has only 256MB ram and 256MB graphic memory, and I'm sure that the day the console was released, even laptop's "standard" capacity was at least 1GB. So why do they put so little memory in their machines, while developers would benefit a lot by having more ? Or is the memory that much faster than desktops and thus more expensive ? Or is it not that much worth it for developers ? What are the Sony/XBox/Nintendo engineers thinking that seems to be the same reason ?

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• Older PHP v/s newer PHP version [closed]

  - by Monty

  My company is building a website with database. Programmer's used PHP 5.0. My Service Provider (shared) in the meantime upgraded to PHP 5.3.0. Fixes have been on going and seem endless... Do I move to VPS and install older PHP or should we rebuild with newer PHP? When working remotely with programers what is the protocol regarding delivery of all code? Please what is the industry standard? I need an independent to review their work. How should this be approached?

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• Why would I want to use CRaSH?

  - by Adam Tannon

  Justed stumbled across CRaSH and although it looks mighty interesting, I'm wondering why a Java developer should invest time & energy into learning (yet another) shell language. What sort of standard- and cool-applications can CRaSH be used for? Is this like a Groovy-version of Jython? I guess, when the dust settles, I'm looking for CRaSH's "wow" factors. I'm sure they're there, but after spending ~20 minutes perusing the documentation I'm just not seeing them. Thanks in advance!

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• ASP.NET MVC Portable Areas - Can they communicate and be used as a plugin-like architecture?

  - by Beton

  I'll get straight to the point: I was wondering if there is a common pattern to use portable areas as a components of a plugin-like architecture. Example: We've got 3 plugins (portable areas) packaged and distributed via NuGet feed. Each of them is following the standard MVC structure (has it own Models, Views and Controllers). Lets say login form, header and footer. What I was wondering if there is a way to make them communicate. For example: when user logs on, login plugin executes it own logic, logs the user and then it updates the state of the header plugin with changes it state accordingly. Thanks in advance.

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• How to get distance from point to line with distinction between side of line?

  - by tesselode

  I'm making a 2d racing game. I'm taking the nice standard approach of having a set of points defining the center of the track and detecting whether the car is off the track by detecting its distance from the nearest point. The nicest way I've found of doing this is using the formula: d = |Am + Bn + C| / sqrt(A^2 + B^2) Unfortunately, to have proper collision resolution, I need to know which side of the line the car is hitting, but I can't do that with this formula because it only returns positive numbers. So my question is: is there a formula that will give me positive or negative numbers based on which side of the line the point is on? Can I just get rid of the absolute value in the formula or do I need to do something else?

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• Tasks, jobs, activities, operations... which term to use when?

  - by Paul Stovell

  My application has a number of different asynchronous 'things' that it performs: There are things that fire off a schedule (every 5 minutes) There are things that are fired when a user clicks a button There are things that are triggered by an incoming web service call I use the terms like this: Scheduled things = Jobs User-triggered things = Tasks Web service-triggered things = Operations Tasks are quite complicated, so they're implemented using a hierarchy of different objects which I call Activities (operations and jobs may also begin to use these Activities as their building blocks). I feel like I might be using the wrong terms - for example, would you expect something that happens every 5 minutes automatically to be a Job or a Task? Is there an industry standard for this? All of the words seem to mean the same thing.

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• Microsoft étend de 2 ans le support gratuit de Windows Server 2008, les mises à jour pour l'OS seront publiées jusqu'en 2015

  Microsoft étend de 2 ans le support gratuit de Windows Server 2008 les mises à jour pour l'OS seront publiées jusqu'en janvier 2015 Microsoft a étendu de deux ans la période de support général pour Windows Server 2008. Le système d'exploitation serveur de l'écosystème Windows lancé en février 2008 devait initialement passer à un support étendu à partir du 9 juillet 2013, pour s'aligner avec le calendrier de Microsoft. En effet, Microsoft offre un support général de cinq ans et un support étendu de cinq ans pour l'ensemble des versions de Windows, que ce soit grand public ou serveur. Pendant la période de support standard, la société fournit des correctifs et autres mises...

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• How get and set accessors work

  - by Chris Halcrow

  The standard method of implementing get and set accessors in C# and VB.NET is to use a public property to set and retrieve the value of a corresponding private variable. Am I right in saying that this has no effect of different instances of a variable? By this I mean, if there are different instantiations of an object, then those instances and their properties are completely independent right? So I think my understanding is correct that setting a private variable is just a construct to be able to implement the get and set pattern? Never been 100% sure about this.

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• What is a *slightly* less extreme equivalent to being "fluent" in a language?

  - by Mehrdad

  tl;dr: What is a less extreme (but still noticeable) alternative to the word "fluent", when saying e.g. "I am fluent in C++/Python/whatever?" I think I can call myself "fluent" in C#, because I know the language and runtime very well, and I'm very familiar with the .NET framework's APIs and classes, etc. I would like to claim the same thing for Python and C++. But while I can program in Python (I did so for an entire summer, making a website with Django), for example, I would not call myself fluent because my code isn't always "Pythonic" (e.g. using map/filter vs. list comprehensions), and I'm not too intimate with some aspects of the language and standard library yet (e.g. the introspection API, etc.). Is there a word or phrase I can use on e.g. a resume to describe what I know? I can think of "very familiar with", but is there a better word/phrase I can use?

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• URL rewriting via forward proxy

  - by Biggroover

  I have an app that runs inside my firewall and talks out to multiple end points via HTTP/HTTPS on a non-standard port e.g. http://endpoint1.domain.com:7171, http://endpoint2.domain.com:7171 What I want to do is route these requests through a forward proxy that then rewrites the URL to something like http://allendpoints.domain.com/endpoint1 (port 80 or 443) then on the other end have a reverse proxy that unwinds what I did on the forward proxy to reach the specific endpoints. The result being that I can route existing app requests through to specific endpoints across the internet without having to change my app software. My questions are: is this even possible? is it a good idea, are their better ways to do this? Can this be done with IIS and Apache as the proxies?

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• How to find manually installed packages?

  - by queueoverflow

  I installed a plain Ubuntu 10.10 on my computer and installed some software via apt-get. Last week I managed to break everything and just started from scratch, and I need to reinstall my software. Is there some way to create a list with all the packages that I have installed manually? So that it would give me a list like „texlive, ...“ and not „texlive, texlive-dep1, textlive-dep2, ...“ and all the standard packages removed? If I could somehow figure out which programs out of the regular install I have removed, that would be awesome too!

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• Is this the correct way to implement .NET MVC website structure?

  - by aspdotnetuser

  I have recently seen a .NET MVC solution in which the markup in the .aspx views have a Controller as their model, and the .ascx user controls they contain use a separate model. I'm new to MVC and I wanted to find out about a few things I'm not clear on. An example of how the code is implemented: UserDetails.aspx view has markup that shows it's using the UserDetailsController.cs as the model. It contains RenderPartial("User_Details.ascx", UserDetailsModel) and passes it the UserDetailsModel. Is this the standard/correct way of implementing MVC? Or just one way to implement it? I also noticed that the classes used as Models appear to be Service classes that have [DataMember] and [DataContract] attributes on the class name and properties - what is the advantage of this implementation?

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• Adobe publie Open Source Media Framework 2.0 pour la création de contenus multimédias optimisés pour Flash

  Adobe publie Open Source Media Framework 2.0 pour la création de contenus multimédias optimisés pour Flash Adobe a annoncé la disponibilité de la version 2.0 d'Open Source Media Framework (OSMF), sa plateforme permettant la création de lecteurs multimédias optimisés pour Adobe Flash. OSMF met à la disposition des développeurs des outils pour proposer des expériences uniques en tirant parti de modules externes dédiés à la publicité, aux mesures de suivi et à la diffusion de contenu, ainsi que des fonctions de lecteurs vidéo standard telles que les commandes de lecture, la navigation vidéo, la mise en mémoire tampon et la diffusion dynamique en continu. La version 2.0 appo...

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• Gnome 2 style user account settings (how to edit user accounts in Unity)

  - by user104140

  Back in Gnome 2 there was a very useful user account editing gui tool whereby I could easily add or edit a user to a group. For example, I could give a standard user access to something that they hadn't installed or don't have default access too, such as Me-TV. How do I do this in Gnome 3 / Unity? I am not allowed to create the tag "edit user accounts" or similar and there isn't anything similar existing, strangely. I'm guessing there is a totally different way to edit user accounts or no one bothers - perhaps no one shares PCs anymore.

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