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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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  • What is the most appropriate testing method in this scenario?

    - by Daniel Bruce
    I'm writing some Objective-C apps (for OS X/iOS) and I'm currently implementing a service to be shared across them. The service is intended to be fairly self-contained. For the current functionality I'm envisioning there will be only one method that clients will call to do a fairly complicated series of steps both using private methods on the class, and passing data through a bunch of "data mangling classes" to arrive at an end result. The gist of the code is to fetch a log of changes, stored in a service-internal data store, that has occurred since a particular time, simplify the log to only include the last applicable change for each object, attach the serialized values for the affected objects and return this all to the client. My question then is, how do I unit-test this entry point method? Obviously, each class would have thorough unit tests to ensure that their functionality works as expected, but the entry point seems harder to "disconnect" from the rest of the world. I would rather not send in each of these internal classes IoC-style, because they're small and are only made classes to satisfy the single-responsibility principle. I see a couple possibilities: Create a "private" interface header for the tests with methods that call the internal classes and test each of these methods separately. Then, to test the entry point, make a partial mock of the service class with these private methods mocked out and just test that the methods are called with the right arguments. Write a series of fatter tests for the entry point without mocking out anything, testing the entire functionality in one go. This looks, to me, more like "integration testing" and seems brittle, but it does satisfy the "only test via the public interface" principle. Write a factory that returns these internal services and take that in the initializer, then write a factory that returns mocked versions of them to use in tests. This has the downside of making the construction of the service annoying, and leaks internal details to the client. Write a "private" initializer that take these services as extra parameters, use that to provide mocked services, and have the public initializer back-end to this one. This would ensure that the client code still sees the easy/pretty initializer and no internals are leaked. I'm sure there's more ways to solve this problem that I haven't thought of yet, but my question is: what's the most appropriate approach according to unit testing best practices? Especially considering I would prefer to write this test-first, meaning I should preferably only create these services as the code indicates a need for them.

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  • Firefox 22 booste ses performances JavaScript et introduit un support complet de WebRTC, le navigateur s'ouvre aux jeux 3D et aux appels vidéos

    Firefox 22 booste ses performances JavaScript avec OdinMonkey et introduit un support de complet de WebRTC le navigateur s'ouvre aux jeux 3D et aux appels vidéos Fidèle à son calendrier de publication des nouvelles versions de Firefox, la fondation Mozilla vient de mettre à la disposition des internautes la version 22 de son navigateur.Peu de changements vont être observés au niveau de l'interface utilisateur, mais cette mouture peut se vanter d'apporter « sous le capot » plusieurs optimisations qui vont améliorer l'expérience de navigation des utilisateurs.La première nouveauté phare est l'intégration d'un module d'optimisation assez particulier au moteur JavaScript.

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  • How to name a static factory method in the utility class?

    - by leventov
    I have an interface MyLongNameInterface with a counterpart utility class MyLongNameInterfaces. What is the best name for a static factory method in the utility class, which creates an instance of MyLongNameInterface? MyLongNameInterfaces.newInstance() -- a new instance of the utility class? MyLongNameInterfaces.newMyLongNameInterface() -- too verbose MyLongNameInterfaces.create() -- create an instance of the utility class? Also, create is not a widely used conventional verb in Java better option?

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  • How to implement a component based system for items in a web game.

    - by Landstander
    Reading several other questions and answers on using a component based system to define items I want to use one for the items and spells in a web game written in PHP. I'm just stuck on the implementation. I'm going to use a DB schema suggested in this series (part 5 describes the schema); http://t-machine.org/index.php/2007/09/03/entity-systems-are-the-future-of-mmog-development-part-1/ This means I'll have an items table with generic item properties, a table listing all of the components for an item and finally records in each component table used to make up the item. Assuming I can select the first two together in a single query, I'm still going to do N queries for each component type. I'm kind of fine with this because I can cache the data into memcache and check there first before doing any queries. I'll need to build up the items on every request they are used in so the implementation needs to be on the lean side even if they're pulled from memcache. But right there is where I feel confident about implementing a component system for my items ends. I figure I'd need to bring attributes and behaviors into the container from each component it uses. I'm just not sure how to do that effectively and not end up writing a lot of specialized code to deal with each component. For example an AttackComponent might need to know how to filter targets inside of a battle context and also maybe provide an attack behavior. That same item might also have a UsableComponent which allows the item to be used and apply some effect onto a different set of targets filtered differently from the same battle context. Then not every part of an item is an active part, an AttributeBonusComponent might need to only kick in when the item is in an equipped state or when displaying the item details page. Ultimately, how should I bring all of the components together into the container so when I use an item as a weapon I get the correct list of targets? Know when a weapon can also be used as an item? Or to apply the bonuses the item provides to a character object? I feel like I've gone too far down the rabbit hole and I can't grasp onto the simple solution in front of me. (If that makes any sense at all.) Likewise if I were to implement the best answer from here I feel like I'd have a lot of the same questions. How to model multiple "uses" (e.g. weapon) for usable-inventory/object/items (e.g. katana) within a relational database.

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  • Extract and convert all Excel worksheets into CSV files using PowerShell

    Can PowerShell provide an easy way to export Excel as a CSV? Yes. Tim Smith demonstrates that whether you have multiple Excel files, or just multiple worksheets in Excel, PowerShell simplifies the process. Get to grips with SQL Server replicationIn this new eBook Sebastian Meine gives a hands-on introduction to SQL Server replication, including implementation and security. Download free ebook now.

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  • Chapter 7–Enforced Data Protection

    - by drsql
    As the book progresses, I find myself veering from the original stated outline quite a bit, because as I teach about this more (and I am teaching a daylong db design class in August at http://www.sqlsolstice.com/ … shameless plug, but it is on topic :) I start to find that a given order works better. Originally I had slated myself to talk more about modeling here for three chapters, then get back to the more implementation topics to finish out the book, but now I am going to keep plugging through...(read more)

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  • How to mount ntfs partitions on startup?

    - by Levan
    I now this question has been asked a million times but this is a bit different, now I need to know on how to mount it on ubuntu 12.10 I been using PYSDM for a long time but on ubuntu 12.10 it does not work sadly, I installed arios-automount and it mounted partitions on start up but problem i have with it, on start up it launches all the partition window So can anyone tell me a good mount manager for ubuntu 12.10 with graphical user interface thank you for your time

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  • Opera 11 intègre le support de l'accélération matérielle 3D basée sur WebGL, une nouvelle version test du navigateur est disponible

    Opera 11 intègre le support de l'accélération matérielle 3D Basée sur WebGL, une nouvelle version test du navigateur est disponible Mise à jour du 02/02/2011 par Idelways Opera vient de lancer la première version de test de son navigateur qui supporte l'accélération matérielle 3D basée sur le standard WebGL. L'annonce vient, d'après l'entreprise, couronner la maturation de ce standard et deux ans de travail sur cette implémentation. Pour mémoire, le processus de standardisation a été porté par le groupe Khronos (lien) WebGL utilise les interfaces graphiques d'OpenGL sur les ordinateurs de bureau po...

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  • HP Photosmart Plus Review

    HP's new $150 inkjet puts the emphasis on convenience with an extra-friendly touch-screen interface and separate letter and photo paper trays, plus output quality good enough to satisfy business users.

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  • La troisième version majeure de Mono est disponible : support complet de C# 5.0 et de la programmation asynchrone

    La troisième version majeure de Mono est disponible Support complet de C# 5.0 et de la programmation asynchrone, profil 4.5, amélioration du compilateur et des performances L'implémentation Open Source du framework .NET est disponible dans sa troisième version majeure et améliore le support du framework de Microsoft pour les machines UNIX, Windows, MacOS et autres. Compilateur C# Mono possède maintenant un support complet de C# 5.0 et de la programmation asynchrone. Le compilateur a finalisé sa migration du générateur de code afin de pleinement utiliser l'API IKVM.Reflection. Cett...

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  • Is this a pattern? Should it be?

    - by Arkadiy
    The following is more of a statement than a question - it describes something that may be a pattern. The question is: is this a known pattern? Or, if it's not, should it be? I've had a situation where I had to iterate over two dissimilar multi-layer data structures and copy information from one to the other. Depending on particular use case, I had around eight different kinds of layers, combined in about eight different combinations: A-B-C B-C A-C D-E A-D-E and so on After a few unsuccessful attempts to factor out the repetition of per-layer iteration code, I realized that the key difficulty in this refactoring was the fact that the bottom level needed access to data gathered at higher levels. To explicitly accommodate this requirement, I introduced IterationContext class with a number of get() and set() methods for accumulating the necessary information. In the end, I had the following class structure: class Iterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const = 0; }; class RecursingIterator : public Iterator { RecursingIterator(const Iterator &below); }; class IterateOverA : public RecursingIterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const { // Iterate over members in dataStructure1 // locate corresponding item in dataStructure2 (passed via context) // and set it in the context // invoke the sub-iterator }; class IterateOverB : public RecursingIterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const { // iterate over members dataStructure2 (form context) // set dataStructure2's item in the context // locate corresponding item in dataStructure2 (passed via context) // invoke the sub-iterator }; void main() { class FinalCopy : public Iterator { virtual void iterateOver(const Structure &dataStructure1, IterationContext &ctx) const { // copy data from structure 1 to structure 2 in the context, // using some data from higher levels as needed } } IterationContext ctx(dateStructure2); IterateOverA(IterateOverB(FinalCopy())).iterate(dataStructure1, ctx); } It so happens that dataStructure1 is a uniform data structure, similar to XML DOM in that respect, while dataStructure2 is a legacy data structure made of various structs and arrays. This allows me to pass dataStructure1 outside of the context for convenience. In general, either side of the iteration or both sides may be passed via context, as convenient. The key situation points are: complicated code that needs to be invoked in "layers", with multiple combinations of layer types possible at the bottom layer, the information from top layers needs to be visible. The key implementation points are: use of context class to access the data from all levels of iteration complicated iteration code encapsulated in implementation of pure virtual function two interfaces - one aware of underlying iterator, one not aware of it. use of const & to simplify the usage syntax.

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  • Summit 2014 Registration Is Open

    - by KemButller
    Attention Oracle (employees) Field Team and Oracle JD Edwards Partners REGISTRATION IS NOW OPEN for Oracle's 5th Annual JD Edwards Summit - Monday, January 27th through Friday, January 31st, 2014, in Broomfield, Colorado. The theme of this year's Summit is "Success Through Continued Innovation”.  Our goals are to update you on our current and future product roadmap, new products, selling strategies for new prospects, growing the footprint in our JD Edwards install base, as well as providing a venue for networking.  The JD Edwards Summit is to the selling and servicing community what COLLABORATE is to the user community.  This is a MUST ATTEND event if you recommend, sell, implement and/or support the JD Edwards product, whether you are new to JD Edwards or a seasoned pro, an executive, account executive, in presales or in consulting.  The Summit promises a content-rich and unique networking experience for all attendees. Highlights include:  Monday afternoon kicks off the Summit with a variety of workshops as well as an afternoon preview of the Sponsor Showcase.  Start your networking at the Summit kickoff party Monday evening. Tuesday morning features several informative keynotes in the Summit General Assembly followed by key messages delivered in Super Sessions in the afternoon, focused on each of the JD Edwards community audiences. The educational offerings continue on Wednesday and Thursday with over 90 breakout sessions on topics spanning technology, applications (core JD Edwards, Edge, Fusion), Sales, Presales and Implementation. Friday concludes with new workshops for the implementation community.A Attendees will be enriched with numerous opportunities to network with fellow partners and Oracle throughout the week.  Consider bringing your team and using this venue to hold your own organization kickoff meeting prior to or post Summit. Contact Sheila Ebbitt (Sheila.ebbitt@oracle-DOT-com) for further assistance with your planning.  Attendees will be charged a Summit fee of US$ 250. Online registration cut-off is January 17, 2014. All registration requests after that time will be processed on-site at the event with an attendee fee of US$ 500. Please contact Rene Chapman (rene.chapman@oracle-DOT-com) for information on sponsorship opportunities. For further details on the JD Edwards Summit including agenda, workshops, educational sessions, lodging,  sponsors and Summit registration, click here! Register now! This is going to be an awesome event! John Schiff Vice President JD Edwards Business Development 

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  • TopComponent, Node, Lookup, Palette, and Visual Library

    - by Geertjan
    Here's a small example that puts together several pieces in the context of a NetBeans Platform application, i.e., TopComponent, Node, Lookup, Palette, and Visual Library: http://java.net/projects/nb-api-samples/sources/api-samples/show/versions/7.2/misc/CensusDesigner The result is a drag-and-drop user interface, i.e., drag items from the palette and drop them onto the window, that's all it does, nothing too fancy, just puts the basic NetBeans Platform pieces together in a pretty standard combination:

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  • Why avoid Java Inheritance "Extends"

    - by newbie
    Good day! Jame Gosling said “You should avoid implementation inheritance whenever possible.” and instead, use interface inheritance. But why? How can we avoid inheriting the structure of an object using the keyword "extends", and at the same time make our code Object Oriented? Could someone please give an Object Oriented example illustrating this concept in a scenario like "ordering a book in a bookstore?" Thank you in advance.

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  • Windows 7 Tips and Tricks: Taskbar Design

    As mentioned earlier in this series the taskbar in Windows 7 is quite flexible and very functional. This is not only true in how it looks but also in the way it can be used to make life easier on your PC. In this edition of our multi-part series on how to improve the look of your Windows 7 interface we will look at two tips you can follow that will affect your taskbar s design.... Comcast? Business Class - Official Site Sign Up For Comcast Business Class, Make Your Business a Fast Business

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  • SOA &amp; Application Grid Specialization step 3 of 6 &ndash; Education Competence Center

    - by Jürgen Kress
    SOA & Application Grid Specialization step 3 of 6 – education competence center Dear Team In our fist step to become SOA Specialized & Application Grid Specialized we highlighted our OMM system to register your opportunities. In our second step we featured our marketing activities to create your reference cases and run joint marketing campaigns. In the third step we will focus on the education criteria: SOA Sales assessment & SOA Pre-Sales assessment & Support assessment. Steps: Login to Oracle Partner Network (support for login contact Partner Business Centers) Go to the OPN Competence Center Select the Oracle Service-Oriented Architecture 11g Sales Specialist (3 persons required) Click the play button to run the assessment Select the Oracle Service-Oriented Architecture 11g PreSales Specialist (3 persons required) Click the play button to run the assessment Select the Oracle Technology Support Specialist (1 person required) Click the play button to run the assessment Tips: · You can run the assessments as often as you like. After each try you will see your current score and correct answers to the questions. · During your next team meeting reserve an hour to become specialized jointly. · For the fist 5 partners who contact us we will order a pizza service to ensure the success of your team meeting! · We want your feedback to improve the assessments. If you find an ambiguous question or one with wrong context or even wrong answers, send us your feedback. The first 5 partners who will send us feedback will get a free competence center coffee cup! If you need to get an Oracle Partner Network Account please contact our Partner Business Centers.   For more information on Specialization please visit our OPN Specialized Webcast Series And become a member in our SOA Partner Community for registration please visit www.oracle.com/goto/ema/soa Jürgen Kress, SOA Partner Adoption EMEA Thanks for your efforts to become Specialized! SOA Specialized Application Grid Specialized Proof 2 transactions with OMM Proof 2 transactions with OMM Create your 2 references Create your 2 references SOA Sales assessment 3, Application Grid Sales Specialist 3 SOA Pre-Sales assessment 3 Application Grid PreSales Specialist 3 Support assessment 1 Support assessment 2 SOA Implementation assessment 4 Application Grid Implementation assessment 4 Technorati Tags: soa specialization Oracle Partner Network SOA Partner Community

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  • Google Analytics - Profile filter with more than one dimension?

    - by Drewdavid
    I have identified some bot traffic in GA, but to filter it accurately I need to filter it by two dimensions, namely Browser and ISP To be clear, I don't want to apply both a filter to block the entire ISP and the entire Browser segments, but only the combination of the two To illustrate: Could someone explain how to do this? It's not apparent using the interface and I'm not able to find any documentation about it

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  • Seconde preview pour le moteur d'Internet Explorer 9 : le HTML 5 semble être devenu une priorité pou

    Mise à jour du 06/05/10 Seconde preview pour le moteur d'Internet Explorer 9 Mais toujours pas d'interface : le HTML5 semble être devenu une priorité pour Microsoft La seconde pré-version d'Internet Explorer 9 est disponible, ou plus exactement la pré-version de son moteur. L'équipe de développement ne souhaite en effet pas mettre la charrue avant les boeufs et continue donc de proposer de tester le « coeur » du navigateur avant d'en dévoiler l'apparence. Selon le responsable du projet, ce moteur affiche des performances de 20 % supérieures à la version précédente pour la gestion du JavaScript (et 36 % plus rapides que celles de Firefo...

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  • Wine settings to correct color palette?

    - by alfC
    I have a Windows application (Kidspiration 3 Starter), that when running under wine 1.4 in Ubuntu 12.04 shows a completely distorted color palette that makes the interface unusable. See screenshot. What is usually the way to correct this? Is there a particular wine library that I should switch to native? Other details: wineHQ list Kidspiration 2.1 as "garbage", however version 3 installation and program works, except for the colors.

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  • Opera 11.60 est disponible en Beta : nouveau parseur HTML5 avec support des protocoles personnalisés et compatibilité ECMAScript 5.1

    Opera 11.60 est disponible en Beta Nouveau parseur HTML5 avec support des protocoles personnalisés et compatibilité ECMAScript 5.1 L'amélioration du support des nouveaux standards Web sur chaque nouvelle version des navigateurs a ralenti avec l'accélération de leur rythmes de développement. Mais Opera Software réussit à maintenir un juste milieu entre nouveautés visibles et fonctionnelles sur des itérations relativement rapides. L'entreprise scandinave sort Opera 11.60 « Tunny » en version bêta, avec son nouveau parseur HTML5 baptisé Ragnarök. Il s'agit de l'implémentation de l'algorithme de parsage de l'HTML5, destiné à standardiser les comportements des différents navigat...

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