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  • Should selenium tests be written in imperative style?

    - by Amogh Talpallikar
    Is an automation tester supposed to know concepts of OOPS and design patterns to write Tests in a way where changes & code re-use are possible? For example, I pick up Java to write cucumber step definitions that instruct a selenium webdriver. Should I be using a lot of inheritance, interfaces, delegation etc. to make life easier or would that be overly complicated for something that should just line by line instructions?

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  • Innovation for Retailers

    - by David Dorf
    One of my main objectives for this blog is to point out emerging technologies and how they might apply to the retail industry.  But ideas are just the beginning; retailers either have to rely on vendors or have their own lab to explore these ideas and see which ones work.  (A healthy dose of both is probably the best solution.)  The Nordstrom Innovation Lab is a fine example of dedicating resources to cultivate ideas and test prototypes. The video below, from 2011, is a case study in which the team builds an iPad app that helps customers purchase sunglasses in the store.  Customers take pictures of themselves wearing different sunglasses, then can do side-by-side comparisons. There are a few interesting take-aways from their process.  First, they are working in the store alongside employees and customers.  There's no concept of documenting all the requirements then building the product.  Instead, they work closely with those that will be using the app in order to fully understand what's needed.  When they find an issue, they change the software onsite and try again.  This iterative prototyping ensures their product hits the mark.  Feels like Extreme Programming if you recall that movement. Second, they have time-boxed the project to one week.  Either it works or it doesn't, and either way they've only expended a week's worth of resources.  Innovation always entails failure, and those that succeed are often good at detecting failure quickly then adjusting.  Fail fast and fail often. Third, its not always about technology.  I was impressed they used paper designs to walk through user stories and help understand the needs of the customer.  Pen and paper is the innovator's most powerful tool. Our Retail Applied Research (RAR) team uses some of these concepts in our development process.  (Calling it a process is probably overkill.)  We try to give life to concepts quickly so the rest of organization can help us decide if we're heading the right direction.  It takes many failures before finding a successful product.

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  • Search Engine Optimisation - The Major Points

    Search Engine Optimisation is no easy task - in fact for many it is a long winded task that requires time and attention to detail. Search Engine Optimisation or SEO can be particularly difficult for a beginner as the search engine landscape is a vast territory, filled with competitors, who employ experts. However, a good understanding of a few concepts could get you far...

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  • Tutoriel OpenGL Moderne : indexation VBO, optimisez vos tampons GPU en OpenGL 3 et supérieur

    Bonjour à tous,La rubrique 2D/3D/Jeux est heureuse de vous présenter une la suite de la série de tutoriels consacrée à OpenGL moderne (les versions à partir d'OpenGL 3.3). Ces tutoriels vous permettront d'intégrer facilement les nouveaux concepts d'OpenGL afin de profiter au maximum des dernières technologies de vos cartes graphiques. Ce neuvième tutoriel vous apprendra à optimiser vos tampons en indexant les VBO.Bonne lecture.

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  • TechEd 2014 Day 3

    - by John Paul Cook
    There is some confusion about durability of data stored in SQL Server in-memory tables, so some review of the concepts is appropriate. The in-memory option is enabled at the database level. Enabling it at the database level only gives you the option to specify the in-memory feature on a table by table basis. No existing tables or new tables will by default become in-memory tables when you enable the feature at the database level. If you choose to make a table an in-memory table, by default it is...(read more)

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  • Cloning a game and releasing the source

    - by Manux
    I'm not really aware of the legal issues surrounding game clones. I'm around halfway done of making a clone, but it's not just the same gaming concepts, I'm literally using the original game's files (which I do not intend to distribute in any way) in my clone. My original intention was to add features to the game (Firefly studios's first Stronghold) while still using the same art. Is it ok to distribute the source of my clone?

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  • Shared Datasets in SQL Server 2008 R2

    This article leverages the examples and concepts explained in the Part I through Part IV of the spatial data series which develops a "BI-Satellite" app. Overview In the spatial data series we ... [Read Full Article]

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  • Chapter 3: JavaFX Primer3

    JavaFX Script blends declarative programming concepts with object orientation. This provides a highly productive, yet flexible and robust, foundation for applications. However, with this flexibility comes responsibility from the developer.

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  • SQL SERVER Create Primary Key with Specific Name when Creating Table

    It is interesting how sometimes the documentation of simple concepts is not available online. I had received email from one of the reader where he has asked how to create Primary key with a specific name when creating the table itself. He said, he knows the method where he can create the table and then [...]...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.

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  • LEVAN : un système informatique en mesure d'apprendre tout sur n'importe quoi, un pas en avant pour l'IA grâce à la supervision par le web ?

    LEVAN : un système informatique en mesure d'apprendre tout sur n'importe quoi un pas en avant pour l'IA grâce à la supervision par le webNombreux sont les domaines de l'informatique qui connaissent un essor important et une évolution continue grâce aux différents travaux de recherches. C'est le cas, par exemple, de l'intelligence artificielle, qui est portée par des projets innovants comme le projet LEVAN.Ce dernier est un système informatique capable d'apprendre par soi-même différents concepts...

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  • Going to Oracle OpenWorld?

    - by erikanollwebb
    Anyone planning to be at Oracle OpenWorld?  We're looking for Business Analysts who might be interested in participating in a Gamification Focus Group.  If you are interested in participating, please contact Gozel Aamoth at [email protected]. We'd love to get folks interested in the topic to participate. There are also a number of other opportunities to give our Applications User Experience team some feedback on designs and concepts outside gamification.

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  • Computer Engineer in CS Interview

    - by blasteye
    As a Computer Engineering student, while in school I've primarily dealt with C, Matlab, and VHDL. On my own though, i learned a bit about OOP (Polymorphism, inheritance, encapsulation), and have done quite a bit of web development using JavaScript/PHP/Node.js While at coding interviews I've be asked academia CS questions such as "abstract vs interface". The problem is that I didn't know the official terminology, but I have dealt with this type of programming decisions/concepts. Could anyone recommend a good resource for me to learn these academia CS terms?

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  • Débats autour de la branche 4.x d'Eclipse, la fondation Eclipse est elle en train de rater sa migration ?

    Depuis plusieurs années deux versions majeures d'Eclipse existent: la branche 3.x (historique) et la branche 4.x (précédemment baptisée e4, reposant sur de nombreux nouveaux concepts). En 2012, deux versions ont été publiées: la fondation Eclipse sort Eclipse Juno 3.8 /4.2. Dans la pratique, la version 4.2 est la version officielle, celle qui est mise en avant. Les versions packagées d'Eclipse (EPP builds) proposées sur la page des téléchargements reposent sur la version 4.2. Pourtant cette migration ...

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  • TechEd 2014 Day 3

    - by John Paul Cook
    There is some confusion about durability of data stored in SQL Server in-memory tables, so some review of the concepts is appropriate. The in-memory option is enabled at the database level. Enabling it at the database level only gives you the option to specify the in-memory feature on a table by table basis. No existing tables or new tables will by default become in-memory tables when you enable the feature at the database level. If you choose to make a table an in-memory table, by default it is...(read more)

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  • Are there any good Java/JVM libraries for my Expression Tree architecture?

    - by Snuggy
    My team and I are developing an enterprise-level application and I have devised an architecture for it that's best described as an "Expression Tree". The basic idea is that the leaf nodes of the tree are very simple expressions (perhaps simple values or strings). Nodes closer to the trunk will get more and more complex, taking the simpler nodes as their inputs and returning more complex results for their parents. Looking at it the other way, the application performs some task, and for this it creates a root expression. The root expression divides its input into smaller units and creates child expressions, which when evaluated it can use to build it's own result. The subdividing process continues until the simplest leaf nodes. There are two very important aspects of this architecture: It must be possible to manipulate nodes of the tree after it is built. The nodes may be given new input values to work with and any change in result for that node needs to be propagated back up the tree to the root node. The application must make best use of available processors and ultimately be scalable to other computers in a grid or in the cloud. Nodes in the tree will often be updating concurrently and notifying other interested nodes in the tree when they get a new value. Unfortunately, I'm not at liberty to discuss my actual application, but to aid understanding a little bit, you might imagine a kind of spreadsheet application being implemented with a similar architecture, where changes to cells in the table are propagated all over the place to other cells that need the result. The spreadsheet could get so massive that applying multi-core multi-computer distributed system to solve it would be of benefit. I've got my prototype "Expression Engine" working nicely on a single multi-core PC but I've started to run into a few concurrency issues (as expected because I haven't been taking too much care so far) so it's now time to start thinking about migrating the Engine to a more robust library, and that leads to a number of related questions: Is there any precedent for my "Expression Tree" architecture that I could research? What programming concepts should I consider. I realise this approach has many similarities to a functional programming style, and I'm already aware of the concepts of using futures and actors. Are there any others? Are there any languages or libraries that I should study? This question is inspired by my accidental discovery of Scala and the Akka library (which has good support for Actors, Futures, Distributed workloads etc.) and I'm wondering if there is anything else I should be looking at as well?

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  • Webinar: Temporary Tables in Oracle and SQL Server

    Once again Jonathan Lewis (Oracle Ace Director, OakTable Network) and Grant Fritchey (Microsoft SQL Server MVP) will host a live discussion on Oracle and SQL Server, this time in relation to temporary tables. Will they agree on some common ground? Or will it be an out and out argument? Either way, be prepared for a lively exchange that will not only entertain, but will teach you key concepts on Oracle and SQL Server.

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  • Tutoriel OpenGL Moderne : shaders de base, apprenez à utiliser des objets transparents dans vos scènes en OpenGL 3 et supérieur

    Bonjour à tous,La rubrique 2D/3D/Jeux est heureuse de vous présenter une la suite de la série de tutoriels consacrée à OpenGL moderne (les versions à partir d'OpenGL 3.3). Ces tutoriels vous permettront d'intégrer facilement les nouveaux concepts d'OpenGL afin de profiter au maximum des dernières technologies de vos cartes graphiques. Ce dixième tutoriel vous apprendra à mettre en place la transparance dans vos applications OpenGL.Bonne lecture.

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  • Tutoriel OpenGL Moderne : les extensions OpenGL, comprenez comment fonctionne l'ajout de fonctionnalités dans OpenGL 3 et supérieur

    Bonjour à tous,La rubrique 2D/3D/Jeux est heureuse de vous présenter une la suite de la série de tutoriels consacrée à OpenGL moderne (les versions à partir d'OpenGL 3.3). Ces tutoriels vous permettront d'intégrer facilement les nouveaux concepts d'OpenGL afin de profiter au maximum des dernières technologies de vos cartes graphiques. Ce douzième tutoriel vous informera sur ce que sont les extensions dans OpenGL et comment elles fonctionnent.Bonne lecture.

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  • How to Learn PHP Starting Today

    When thinking about how to learn PHP, many first timers may think of complex theories that are highly technical in nature. Although this is true, you don't need to know the upper level concepts to start learning the basic principles.

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  • Slides and Code from “Using C#’s Async Effectively”

    - by Reed
    The slides and code from my talk on the new async language features in C# and VB.Net are now available on https://github.com/ReedCopsey/Effective-Async This includes the complete slide deck, and all 4 projects, including: FakeService: Simple WCF service to run locally and simulate network service calls. AsyncService: Simple WCF service which wraps FakeService to demonstrate converting sync to async SimpleWPFExample: Simplest example of converting a method call to async from a synchronous version AsyncExamples: Windows Store application demonstrating main concepts, pitfalls, tips, and tricks from the slide deck

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