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• Instantiating objects in Java

  - by Davis Naglis

  I'm learning now Java from scratch and when I started to learn about instantiating objects, I don't understand - in which cases do I need to instantiate objects? For example I'm studying from TutsPlus course about it and there is example about "Rectangle" class. Instructor says that it needs to be instantiated. So I started to doubt about - when do I need to instantiate those objects when writing Java code?

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• Training of Search Engine Optimization

  There are many valuable points that cannot be obtained without proper search engine optimization training and the main features of any SEO course will be discussed. The first and foremost feature is keyword optimization which is the key to success when it comes to SEO articles as there are no back links.

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• How SEO Services Work to Improve Your Online Popularity

  There are assorted SEO Services available to help boost your online popularity. You might not know it but all these Internet Marketing strategies work together to make sure you appear on search engines, increase your rankings to outdo your competition, and of course, make a name for yourself on the Web.

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• windows azure thoughts.

  - by foxjazz

  Well I had a relatively unpleasant exprience with Microsoft's new offerings when it comes to azure.And of course they deleted the forum trail.They don't want the consumer as a customer, expect to pay $200 - $250 or more a year for azure and that doesn't include a good email solution. This is for the smallest slice offering.If you want a simple website solution 1and1.com isn't a bad choice and it's less than $50 a year.

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• Compiz shortcut with two arrow keys

  - by l0b0

  The "Put" functionality of CompizConfig Settings Manager is great. I'd like to be able to move windows to the desktop corners by using Super+Down/Up+Left/Right for this; is that possible? Whenever I try to set something like that it is just reset to "Disabled". A workaround is of course to use the numeric pad, but I'd like to be able to do this on my EEE laptop as well without enabling and disabling NumLock all the time.

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• Greenie Linux: A distribution for ALL users

  <b>Ghacks:</b> "Recently (in my Pardus Linux article) Ghacks reader PeterB mentioned one of his favorite distributions Greenie Linux. Of course I had to give this a whirl and see what it was all about."

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• What are invariants, how can they be used, and have you ever used it in your program?

  - by gablin

  I'm reading Coders at Work, and in it there's a lot of talk about invariants. As far as I've understood it, an invariant is a condition which holds both before and after an expression. They're, among other things, useful in proving that loop is correct, if I remember my Logic course correctly. Is my description correct, or have I missed something? Have you ever used them in your program? And if so, how did they benefit?

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• What legal considerations do I need to have when programming?

  - by JustJohn

  Recently I worked with a group to create a logging system for tutoring labs to track Tutor hours, and usage of the labs. We had to change the design a fair amount to be in compliance with FERPA. My question stems from the curiosity that in my course of study there has never been a real mention of how people in this field have to deal with complying with the law in their work. So I would like to know how much programmers have to consider the law in the work they do.

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• What's the simplest way to create a page with dynamic elements?

  - by ElendilTheTall

  I'm developing a site, part of which lists training courses with dates and prices. Every year the dates and prices change, which would mean loads of manual code editing to update the pages. What I'd like to do is have a database containing the relevant information, which the course pages then reference, so we can just update the database rather than the HTML. My experience lies in static design - so, what is a simple way to achieve this?

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• Lights, Camera, Sales: The Benefits of SEO Video

  Want to sell more products? Of course you do. Adding search engine optimized video to your e-commerce site can raise both your Google ranking and your bottom line.

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• How to start with PowerPivot for Excel

  - by Marco Russo (SQLBI)

  Now that Office 2010 has been released, many people will start looking for resources to start learning PowerPivot. Of course, the book I’m writing will be helpful when it will be published (September 2010), but you can also start with some online content on Microsoft sites. First of all, this is the web site dedicated to PowerPivot: http://www.powerpivot.com/ It contains several videos and demos and it’s also possible to use a Virtual Lab without installing Office 2010 on your PC. Then, there is...(read more)

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• YourNetBiz - SEO in a Recession

  Of Course, Google AdWords can produce traffic and results but that comes at a hefty price. More and more people have realized that during these hard times of a recession, its becoming more and more important to utilize techniques to gain traffic without paying a premium price.

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• Reflecting on week long Training with SQLSkills

  - by NeilHambly

  Time for a quick reflection on my 5-day's training with SQLSkills, they have 4 weeks in their immersion training program, this was week 1: Internals & Performance held @ large Heathrow Hotel http://www.sqlskills.com/T_ImmersionInternalsDesign.asp So was the Course worth the Time and Money... undoubtedly, I believe we had a large number of the people there also self-funding along with the lucky corporate sponsored ones. It was akin to doing say the "London marathon" in that you know...(read more)

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• Waiting For SEO to Take Effect

  To experience the full benefits of SEO, it does not require years. Unless it is practiced incorrectly, of course. When you try to outsmart the web crawlers that major search engines have, then you may really need a lot of time before you finally get your business full operational.

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• Tutorial on OpenGL texture formats

  - by Cyan

  Looking at the documentation glGetTexImage(), one can see that there are plenty of available texture formats. GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_2D_ARRAY, GL_TEXTURE_RECTANGLE, GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, and GL_TEXTURE_CUBE_MAP_NEGATIVE_Z I've only used GL_TEXTURE_2D for the time being. Is there any place / documentation where one can learn about these other formats ? PS : and yes, of course, i've googled for it, results are pretty poor

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• How can I deal with the cargo-cult programming attitude?

  - by Aivar

  I have some computer science students in a compulsory introductory programming course who see programming language as a set of magic spells, which must be cast in order to achieve some effect (instead of seeing it as a flexible medium for expressing their idea of solution). They tend to copy-paste code from previous, similar-looking assignments without considering the essence of the problem. Can anyone recommend some exercises or analogies to make these students more confident that they can, and should, understand the structure and meaning of each piece of code they write?

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• Do I need to physically host my website in separate countries for SEO?

  - by noelmcg

  I run an ecommerce store that is hosted in Ireland, and ranks ok with google.ie The market for this comapny is the Republic of Ireland and the UK. Is it beneficial for me to have a UK hosted version of my site (.co.uk) to rank higher in google.co.uk (and other localised search engines of course). If so, how would I prevent the site from being punished for duplicate content? Thanks in advance for any assistance on the above.

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• Do you prefer building your interfaces in IB or programmatically? and why?

  - by LolaRun

  I've been using Xcode and building iPhone apps for two months, but I'm finding it really hard to grasp good application design. I always face problems—like you can't put your tabbarcontroller in another custom viewcontroller, for example—that 'sometimes', of course, would work if you did the creation of the views/viewcontrollers programmatically. So I don't know if I should start writing the creation of my objects or use Interface Builder. What are your experiences?

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• How should game objects be aware of each other?

  - by Jefffrey

  I find it hard to find a way to organize game objects so that they are polymorphic but at the same time not polymorphic. Here's an example: assuming that we want all our objects to update() and draw(). In order to do that we need to define a base class GameObject which have those two virtual pure methods and let polymorphism kicks in: class World { private: std::vector<GameObject*> objects; public: // ... update() { for (auto& o : objects) o->update(); for (auto& o : objects) o->draw(window); } }; The update method is supposed to take care of whatever state the specific class object needs to update. The fact is that each objects needs to know about the world around them. For example: A mine needs to know if someone is colliding with it A soldier should know if another team's soldier is in proximity A zombie should know where the closest brain, within a radius, is For passive interactions (like the first one) I was thinking that the collision detection could delegate what to do in specific cases of collisions to the object itself with a on_collide(GameObject*). Most of the the other informations (like the other two examples) could just be queried by the game world passed to the update method. Now the world does not distinguish objects based on their type (it stores all object in a single polymorphic container), so what in fact it will return with an ideal world.entities_in(center, radius) is a container of GameObject*. But of course the soldier does not want to attack other soldiers from his team and a zombie doesn't case about other zombies. So we need to distinguish the behavior. A solution could be the following: void TeamASoldier::update(const World& world) { auto list = world.entities_in(position, eye_sight); for (const auto& e : list) if (auto enemy = dynamic_cast<TeamBSoldier*>(e)) // shoot towards enemy } void Zombie::update(const World& world) { auto list = world.entities_in(position, eye_sight); for (const auto& e : list) if (auto enemy = dynamic_cast<Human*>(e)) // go and eat brain } but of course the number of dynamic_cast<> per frame could be horribly high, and we all know how slow dynamic_cast can be. The same problem also applies to the on_collide(GameObject*) delegate that we discussed earlier. So what it the ideal way to organize the code so that objects can be aware of other objects and be able to ignore them or take actions based on their type?

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• Where Can You Find OpenWorld 2013 Presentations?

  - by Steven Chan (Oracle Development)

  Presentations for OpenWorld 2013 sessions are available for approximately six months (until ~March 2014).  You should download presentation materials now, while they're still available: OpenWorld 2013 Course Catalog If a search engine brought you here:  this blog is maintained by E-Business Suite Development, not the OpenWorld team. Questions about OpenWorld content can be directed to the OpenWorld team here. Related Articles E-Business Suite Technology Sessions at OpenWorld 2013

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• Eager to Learn more about MySQL?(Week 40)

  - by rituchhibber

  Are you a SQL programmer eager to know more?Oracle University is pleased to announce the availability of a new course in Training on Demand format : MySQL Performance Tuning.Why wait to get the training you need? Learn Oracle from Oracle today. Check out the demo to see how it works.Take a look at the new Training on Demand  MySQL Certification Packages.Please note: your OPN discount is applied to the standard price shown on the website.For more information, assistance and bookings contact your local Oracle University Service Desk.

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• An SEO Service Provider is a Must For Content Creation

  Anyone who plans on making any search engine optimizing (SEO) changes to their website should consider hiring an Internet marketing company who will know precisely how to create keywords that will attract a lot of traffic to your website. This will, in turn, increase your sales. Of course, you will need to be happy with these keywords before the person whom you hire will create highly effective, original, and unique content for your website.

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• 5 years of university education vs. 5 years of work experience - Which would you pick if hiring? [closed]

  - by gablin

  Say you need to hire a programmer. You have two candidates at your table: one has studied 5 years at uni (and holds a Master's degree, of course), but has no work experience; and the other holds no university degree but has worked for 5 years. Also assume that they both know the same programming languages, have about the same personality and spend equal amount of time programming on their spare time. If you only had this information to go on, which would you pick?

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• Handling Constraint Violations and Errors in SQL Server

  The database developer can, of course, throw all errors back to the application developer to deal with, but this is neither kind nor necessary. How errors are dealt with is dependent on the application, but the process itself isn't entirely obvious. Compress live data by 73% Red Gate's SQL Storage Compress reduces the size of live SQL Server databases, saving you disk space and storage costs. Learn more.

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• Mozilla sort un SDK pour JetPack, la révolution est en marche dans le développement des extensions d

  Mozilla sort un SDK pour JetPack La révolution dans le développement des extensions de Firefox est en marche La Fondation Mozilla est consciente que l'arrivée de Chrome et de ses extensions - visiblement plus simples à créer - représente un danger pour sa communauté de développeurs. Elle n'a certes pas lancé le projet pour cela, mais JetPack devrait cependant l'aider à rester dans la course et à conserver son attrait. Pour mémoire JetPack est un pr...

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