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• Implementation Specialist OPN Exam for OBI Suite 11g is Now LIVE

  - by Mike.Hallett(at)Oracle-BI&EPM

  The OPN specialisation Exam for implementation consultants of OBI Suite 11g is now live and ready for all partners.  You can now update your specialisation certification to the latest product version 11g for OBI: until recently, the accreditation had examined skills for OBI 10g. For more details see Oracle Business Intelligence Foundation Suite 11g Essentials (1Z1-591) where you can apply for this Oracle Implementation Specialist credential. This exam is primarily intended for consultants that are skilled in implementing solutions based on Oracle Business Intelligence Foundation Suite 11g. The certification covers skills such as: installing OBIEE, building the BI Server metadata repository, building BI dashboards, constructing ad hoc queries, defining security settings and configuring and managing cache files. The exam targets the intermediate-level implementation team member. Up-to-date training and field experience are recommended.   Also Note the New OPN on-line Sales & Pre-sales Assessment Tests are available @ Oracle Business Intelligence Foundation Suite 11g Sales Specialist Oracle Business Intelligence Foundation Suite 11g PreSales Specialist Oracle Business Intelligence Foundation Suite 11g Support Specialist FREE Certification Testing at OpenWorld ·       Are you attending OPN Exchange @ OpenWorld ? Then join us at OPN Specialist Test Fest! October 1st - 4th 2012, Marriott Marquis Hotel :  Pre-register here now!   For More Information OPN Certified Specialist exams OPN Certified Specialist FAQ Enablement 2.0 Get Specialized!

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• Screencast not producing files

  - by JohnS

  I'm using Gnome 3 on 12.04 and trying to create a screencast. I start the screencast using the Ctrl-Alt-Shift-R shortcut and the red light appears in the bottom right corner. I go about my business then press the key combination again when done. The problem is that the screencast file gets generated maybe 1 out of 10 times. Is there a log file I can look at to determine the issue? How about a settings file? UPDATE: I did some additional testing. What's happening is that the screencast does work but it appends the new video to the existing file. Even if the file is renamed or moved to trash. Emptying trash does not create a new file either. Not sure where the video gets recorded to then. The only reliable way I've found to have a new file created is to log out of the session and log back in. Is this expected behaviour? Is there a way to force screencast to create a new file every time Ctrl-Alt-Shift-R is pressed?

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• What's new at Oracle in Gamification?

  - by erikanollwebb

  It's been a crazy few weeks in Apps UX.  We are actively working on some gamification designs in now 4 different application product areas, as well as supporting some teams in other areas of Oracle.  Since that gets to be a pretty diverse group with a lot of resources and ideas, we've started a group in the Oracle Social Network on Gamification at Oracle.  That's limited to internal users at Oracle, but if you are interested in joining,  ping me directly for more information at [email protected]. We're planning another design jam like we did here at Oracle in May and at the Enterprise Gamification Forum in San Diego in September.  This time, we're taking the show to the UK, and hosting it with a group of customers on the Oracle Usability Advisory Board.  It should be a great event!   We're also actively designing some gamified flows which we'll be testing with users at the UKOUG to see what our customers think about some of our gamification ideas. We're looking at more feedback opportunities.  Internally, we surveyed 444 folks within Oracle about gamification and we'll be posting some of our findings on that here soon.  I'll be posting a blog on gamification for our customers at useableapps.oracle.com  in the next few weeks and I'll cross-post to here when it comes out.  So even though it's been quiet on this blog, we are busy and I'm hoping to push out more content in the next few weeks!  Would love to know what's most interesting to the folks reading so if there's something you especially want to see, feel free to comment or email me about it.

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• Slap the App on the VM for every private cloud solution! Really ?

  - by Anand Akela

  One of the key attractions of the general session "Managing Enterprise Private Cloud" at Oracle OpenWorld 2012 was an interactive role play depicting how to address some of the key challenges of planning, deploying and managing an enterprise private cloud. It was a face-off between Don DeVM, IT manager at a fictitious enterprise 'Vulcan' and Ed Muntz, the Enterprise Manager hero .   Don DeVM is really excited about the efficiency and cost savings from virtualization. The success he enjoyed from the infrastructure virtualization made him believe that for all cloud service delivery models ( database, testing or applications as-a-service ), he has a single solution - slap the app on the VM and here you go . However, Ed Muntz believes in delivering cloud services that allows the business units and enterprise users to manage the complete lifecycle of the cloud services they are providing, for example, setting up cloud, provisioning it to users through a self-service portal ,  managing and tuning the performance, monitoring and applying patches for database or applications. Watch the video of the face-off , see how Don and Ed address some of the key challenges of planning, deploying and managing an enterprise private cloud and be the judge ! ?

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• SOA performance on SPARC T5 benchmark results

  - by JuergenKress

  The brand NEW super fast SPARC T5 servers are available. The platform is superb to run large SOA Suite environments or to consolidate your whole middleware platform. Some performance advices, recommended for all workloads: Performance profile for SOA apps on Oracle Solaris 11 BPEL (Fusion Order Demo) instances per second OSB (messages / transformations per second) Crypto acceleration study for SOA transformations SPARC T4 and T5 platform testing, pre-tuning Performance suitable for mid-to-high range enterprise in stand-alone SOA deployment or virtualized consolidation environment shared with Oracle applications 2.2x to 5x faster than SPARC T3 servers 25% faster SOA throughput, core to core than Intel 5600-series servers (running Exalogic software) SPARC T5 has 2x the consolidation density of Intel 5600-class processors 2x faster initial deployment time using Optimized Solutions pre-tested configuration steps Over 200 Application adapters for easiest Oracle software integration Would you like to get details? We can share with you on 1:1 bases T5 SOA Suite performance benchmarks, please contact your local partner manager or myself! SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Facebook Wiki Mix Forum Technorati Tags: T5,TS Sparc,T5 SOA,bechmark,SOA Community,Oracle SOA,Oracle BPM,Community,OPN,Jürgen Kress

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• Organization standards for large programs

  - by Chronicide

  I'm the only software developer at the company where I work. I was hired straight out of college, and I've been working here for several years. When I started, eveeryone was managing their own data as they saw fit (lots of filing cabinets). Until recently, I've only been tasked with small standalone projects to help with simple workflows. In the beginning of the year I was asked to make a replacement for their HR software. I used SQL Server, Entity Framework, WPF, along with MVVM and Repository/Unit of work patterns. It was a huge hit. I was very happy with how it went, and it was a very solid program. As such, my employer asked me to expand this program into a corporate dashboard that tracks all of their various corporate data domains (People, Salary, Vehicles/Assets, Statistics, etc.) I use integrated authentication, and due to the initial HR build, I can map users to people in positions, so I know who is who when they open the program, and I can show each person a customized dashboard given their work functions. My concern is that I've never worked on such a large project. I'm planning, meeting with end users, developing, documenting, testing and deploying it on my own. I'm part way through the second addition, and I'm seeing that my code is getting disorganized. It's still programmed well, I'm just struggling with the organization of namespaces, classes and the database model. Are there any good guidelines to follow that will help me keep everything straight? As I have it now, I have folders for Data, Repositories/Unit of Work, Views, View Models, XAML Resources and Miscellaneous Utilities. Should I make parent folders for each data domain? Should I make separate EF models per domain instead of the one I have for the entire database? Are there any standards out there for organizing large programs that span multiple data domains? I would appreciate any suggestions.

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• Bitmap Font Displays in Center Always Without Coding it Manually (Fix Coordinate Problem onText)

  - by David Dimalanta

  Is there a way on how to stay the texts in center without manually coding it or something, especially when making an update? I'm making a display for the highest score. Let's say that the score is 9. However, if the score is 9,999,999, the text displays still only at the fixed X and Y coordinate. Is there really a way to stay the text in center especially when there is changes when a player beats the new world record? Here's my code inside Sprite Batch: font.setScale(1.5f); font.draw(batch, "HIGHEST SCORE:", (900/10)*1 + 60, (1280/16)*10); font.draw(batch, "" + 9999999 + "", (900/10)*4, (1280/16)*8); batch.draw(grid_guide, 0, 0, 900, 1280); // --> For testing purpose only. // Where 9999999 is a new record score for example. Here's the image shown as example. I add it some red grid so that I could check if the display of score when updated will always display on center no matter how many digits takes place in. However, it is fixed, so I have to figure it out how to display it automatically on center regardless of the number of digits while updating for the new highscore. I have used the LibGDX preferences very well though to save and load records for the highscore.

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• Tomcat + Spring + CI workflow

  - by ex3v

  We're starting our very first project with Spring and java web stack. This project will be mainly about rewriting quite large ERP/CRM from Zend Framework to Java. Important factor in my question is that I come from php territory, where things (in terms of quality) tend to look different than in java world. Fatcs: there will be 2-3 developers, at least one of developers uses Windows, rest uses Linux, there is one remote linux-based machine, which should handle test and production instances, after struggling with buggy legacy code, we want to introduce good programming and development practices (CI, tests, clean code and so on) client: internal, frequent business logic changes, scrum, daily deployments What I want to achieve is good workflow on as many development stages as possible (coding - commiting - testing - deploying). The problem is that I've never done this before, so I don't know what are best practices to do this. What I have so far is: developers code locally, there is vagrant instance on every development machine, managed by puppet. It contains the same linux, jenkins and tomcat versions as production machine, while coding, developer deploys to vagrant machine, after local merge to test branch, jenkins on vagrant handles tests, when everything is fine, developer pushes commits and merges jenkins on remote machine pulls commit from test branch, runs tests and so on, if everything looks green, jenkins deploys to test tomcat instance Deployment to production is manual (altough it can be done using helping scripts) when business logic is tested by other divisions and everything looks fine to client. Now, the real question: does above make any sense? Things that I'm not sure about: Remote machine: won't there be any problems with two (or even three, as jenkins might need one) instances of same app on tomcat? Using vagrant to develop on php environment is just vise. Isn't this overkill while using Tomcat? I mean, is there higher probability that tomcat will act the same on every machine? Is there sense of having local jenkins on vagrant?

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• 3D space game development

  - by user1693061

  I want to develop a 3D game (sci-fi type with spaceships) which can be played on multiplayer mode and by multiplayer i mean around 10 players for start as it will be a personal testing project and mostly educational. I have been searching for some days about the available languages and engines but i am kinda confused. Since i have been learning Java for my 1st year in I.T university and i have pretty good understanding i thought i would go with the Java language and develop that game on an applet so it could be played on a browser. After going through an applet game tutorial i understood how graphics work on an applet. So.. 1st question: Could an applet carry the burden of a 3D game especially on multiplayer? My thinking: It's a space game so the graphics should not be such a big problem since it wont be that crowded with entities apart from ships, planets and some effects. If the java applet is not the way for my project i would't mind "developing it on desktop"(i mean not making it a browser game). 2nd question: Should i use Unity engine for my purpose(space game)? If not name other language/engine combo.

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• Google Analytics: How long does it take users to trigger an event

  - by Stephen Ostermiller

  I implemented Google Analytics event tracking on my currency conversion website. The typical user flow is: User lands on a page about two currencies. User enters an amount to be converted. The site shows the user the value in the other currency. The JavaScript sends Google Analytics an "converted" event when the currency conversion is done. Because most of the sessions on my site are single page, the event tracking is very important to me to be able to know if users find my page useful. I'm looking for a way to be able to figure out how long it typically takes users to enter a value in the form. I expect that this data would form a bell curve with around a specific amount of time after page load. If I can't get a graph, I could make do with a median value. I would like to be able to use this as a core metric around usability testing. Is there a way to get this information out of Google Analytics?

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• How can I triple boot Xubuntu, Ubuntu and Windows?

  - by ag.restringere

  Triple Booting Xubuntu, Ubuntu and Windows I'm an avid Xubuntu (Ubuntu + XFCE) user but I also dual boot with Windows XP. I originally created 3 partitions and wanted to use the empty one as a storage volume but now I want to install Ubuntu 12.04 LTS (the one with Unity) to do advanced testing and packaging. Ideally I would love to keep these two totally separate as I had problems in the past with conflicts between Unity and XFCE. This way I could wipe the Ubuntu w/ Unity installation if there are problems and really mess around with it. My disk looks like this: /dev/sda1 -- Windows XP /dev/sda2 -- Disk /dev/sda: 200.0 GB, 200049647616 bytes 255 heads, 63 sectors/track, 24321 cylinders, total 390721968 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Device Boot Start End Blocks Id System /dev/sda1 * 63 78139454 39069696 7 HPFS/NTFS/exFAT /dev/sda2 78141440 156280831 39069696 83 Linux /dev/sda3 156282878 386533375 115125249 5 Extended /dev/sda4 386533376 390721535 2094080 82 Linux swap / Solaris /dev/sda5 156282880 386533375 115125248 83 Linux Keep each in it's own partition and totally separate and be able to select from each of the three systems from the GRUB boot menu... sda1 --- [Windows XP] sda2 --- [Ubuntu 12.04] "Unity" sda3(4,5) -- [Xubuntu 12.02] "Primary XFCE" What is the safest and easiest way to do this without messing my system up and requiring invasive activity?

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• Java Slick2d - Mouse picking how to take into account camera

  - by Corey

  When I move it it obviously changes the viewport so my mouse picking is off. My camera is just a float x and y and I use g.translate(-cam.cameraX+400, -cam.cameraY+300); to translate the graphics. I have the numbers hard coded just for testing purposes. How would I take into account the camera so my mouse picking works correctly. double mousetileX = Math.floor((double)mouseX/tiles.tileWidth); double mousetileY = Math.floor((double)mouseY/tiles.tileHeight); double playertileX = Math.floor(playerX/tiles.tileWidth); double playertileY = Math.floor(playerY/tiles.tileHeight); double lengthX = Math.abs((float)playertileX - mousetileX); double lengthY = Math.abs((float)playertileY - mousetileY); double distance = Math.sqrt((lengthX*lengthX)+(lengthY*lengthY)); if(input.isMousePressed(Input.MOUSE_LEFT_BUTTON) && distance < 4) { if(tiles.map[(int)mousetileX][(int)mousetileY] == 1) { tiles.map[(int)mousetileX][(int)mousetileY] = 0; } } That is my mouse picking code

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• Is Scala ready for prime time?

  - by jayraynet

  Now that I've done a few trivial things with Scala (which I love for "hello world" and contrived applications!) I am left wondering.. part about maturity of the tools to support development, and part about general applicability. Are the toolsets ready? Is Scala appropriate for use on enterprise / business applications? Would "you" use it on a non-trivial project? Some of my (possibly unfounded) concerns would be: are the IDE and toolsets as rich as what we have to develop .net and java applications (eclipse for Scala seems limited compared to eclipse for java)? are the build / CI / testing toolsets able to effectively deal with Scala? how maintainable is the concise code that can be (encouraged?) written in the language? is it possible to find developers with Scala experience? is there enough critical mass to get help through on-line reference and books that are more than "intro" to the language? So bottom line - is the ecosystem mature enough to use now, or better off waiting to see how it evolves? EDIT: let's say "non-trivial" is a multi-year, multi-release, 10-20 developers project.

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• Searching for entity awareness in 3D space algorithm and data structure

  - by Khanser

  I'm trying to do some huge AI system just for the fun and I've come to this problem. How can I let the AI entities know about each other without getting the CPU to perform redundant and costly work? Every entity has a spatial awareness zone and it has to know what's inside when it has to decide what to do. First thoughts, for every entity test if the other entities are inside the first's reach. Ok, so it was the first try and yep, that is redundant and costly. We are working with real time AI over 10000+ entities so this is not a solution. Second try, calculate some grid over the awareness zone of every entity and test whether in this zones are entities (we are working with 3D entities with float x,y,z location coordinates) testing every point in the grid with the indexed-by-coordinate entities. Well, I don't like this because is also costly, but not as the first one. Third, create some multi linked lists over the x's and y's indexed positions of the entities so when we search for an interval between x,y and z,w positions (this interval defines the square over the spatial awareness zone) over the multi linked list, we won't have 'voids'. This has the problem of finding the nearest proximity value if there isn't one at the position where we start the search. I'm not convinced with any of the ideas so I'm searching for some enlightening. Do you people have any better ideas?

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• Am I programming too slow?

  - by Jonn

  I've only been a year in the industry and I've had some problems making estimates for specific tasks. Before you close this, yes, I've already read this: http://programmers.stackexchange.com/questions/648/how-to-respond-when-you-are-asked-for-an-estimate and that's about the same problem I'm having. But I'm looking for a more specific gauge of experiences, something quantifiable or probably other programmer's average performances which I should aim for and base my estimates. The answers range from weeks, and I was looking more for an answer on the level of a task assigned for a day or so. (Note that this doesn't include submitting for QA or documentations, just the actual development time from writing tests if I used TDD, to making the page, before having it submitted to testing) My current rate right now is as follows (on ASP.NET webforms): Right now, I'm able to develop a simple data entry page with a grid listing (no complex logic, just Creating and Reading) on an already built architecture, given one full day's (8 hours) time. Adding complex functionality, and Update and Delete pages add another full day to the task. If I have to start the page from scratch (no solution, no existing website) it takes me another full day. (Not always) but if I encounter something new or haven't done yet it takes me another full day. Whenever I make an estimate that's longer than the expected I feel that others think that I'm lagging a lot behind everyone else. I'm just concerned as there have been expectations that when it's just one page it should take me no more than a full day. Yes, there definitely is more room for improvement. There always is. I have a lot to learn. But I would like to know if my current rate is way too slow, just average, or average for someone no longer than a year in the industry.

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• Registering in the iOS developer program as a minor

  - by maxluzuriaga

  Hi there. Recently I started learning to develop Apps for iOS, and while the simulator is fine for starting out, I've gotten to the point that I really should be testing the Apps I write on an actual device. As I'm sure you are well aware, to do this you must be a member of the $99/year iOS developer program, which also allows you to publish on the App Store. I'm more than happy to pay the fee, but my problem is that I'm still a minor, and to join the developer program you must be over 18 in the U.S. (I'm not sure how it works in other countries). I've talked to a few others that were in a similar position, but their responses have been varied. From what I've gathered, the best course of action is to register in the name of one of my parents. My problem with this is that if I were to ever publish an App on the store, it would be ideal to have my name as the seller instead of my Dad's. It wouldn't be the end of the world if this happened, but as I said, this wouldn't be ideal. Now I turn to you; is this a good plan? Have any of you been in this position or known somebody who has? Any other tips would be greatly appreciated. Thanks!

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• How to do a 3-tier using PHP [closed]

  - by Ric

  I have a requirement from a client for my PHP Web application to be 3-tier. For example, I would have a web server on Apache in the DMZ, but it should NOT contain any DB connections. It should connect to a Middle server that would host the business objects but be behind the firewall. Then those objects connect to my SQL cluster on another server. I have actually done this using .NET, but I am not sure how to setup my stack using PHP. I suppose I could have my UI front tier call the middle tier using REST based web services if I create my middle tier as a second web server, but this seems overly complex. The main reason for this is advanced security: we can not have any passwords on the DMZ first tier web server. The second reason is scalability - to have multiple server on different tiers that can handle the requests. The Last reason is for deployment - it is easier if I can take one set of servers offline for testing before putting them back in production. Is there a open source project that shows how to do this? The only example I can find is the web server hosting files from a shared drive on another machine (kind of how DotNetNuke pretends to be 3-tier), but that is NOT secure.

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• My Obligatory IPad Post

  - by mark.wilcox

  I've had my IPad for about a week now. So I thought I'd write some thoughts down based on my initial experiences. Here are my initial take-aways: 1 - Netflix OnDemand - I'm a movie junkie. I'm now more apt to just start a movie as background sound for my workday (I telecommute - so except for the occasional bark from my dog, it's awfully quiet here if I don't have something going). 2 - The Email Client is really nice and I'm as fast or faster typing when I have the wireless keyboard engaged. Even with onscreen keyboard - I'm already close to 75% of desktop speed 3 - The battery life is incredible - I think this is the first case where a mobile device actually under-promised on battery 4 - It totally has killed the notion of using a normal PC for my wife and mother-in-law - neither of which had wanted an iPhone/iPod Touch or really any Apple device until they got to play with my iPad. The concept of - instant on, easy to hold and touch-based navigation has them hooked. Heck, it has me hooked. My ultimate goal is to be able to have it at least replace the need to take my netbook with me on the road. I haven't had a chance to complete my testing on that front yet - between work, my wife traveling (for a change) and now my wife home sick - I haven't had time to just play with it. But so far my only regret - that I haven't already bought two more for everyone else in my family who wants to use mine. Posted via email from Virtual Identity Dialogue

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• Is there really anything to gain with complex design? [duplicate]

  - by SB2055

  This question already has an answer here: What is enterprise software, exactly? 8 answers I've been working for a consulting firm for some time, with clients of various sizes, and I've seen web applications ranging in complexity from really simple: MVC Service Layer EF DB To really complex: MVC UoW DI / IoC Repository Service UI Tests Unit Tests Integration Tests But on both ends of the spectrum, the quality requirements are about the same. In simple projects, new devs / consultants can hop on, make changes, and contribute immediately, without having to wade through 6 layers of abstraction to understand what's going on, or risking misunderstanding some complex abstraction and costing down the line. In all cases, there was never a need to actually make code swappable or reusable - and the tests were never actually maintained past the first iteration because requirements changed, it was too time-consuming, deadlines, business pressure, etc etc. So if - in the end - testing and interfaces aren't used rapid development (read: cost-savings) is a priority the project's requirements will be changing a lot while in development ...would it be wrong to recommend a super-simple architecture, even to solve a complex problem, for an enterprise client? Is it complexity that defines enterprise solutions, or is it the reliability, # concurrent users, ease-of-maintenance, or all of the above? I know this is a very vague question, and any answer wouldn't apply to all cases, but I'm interested in hearing from devs / consultants that have been in the business for a while and that have worked with these varying degrees of complexity, to hear if the cool-but-expensive abstractions are worth the overall cost, at least while the project is in development.

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• How can I run and jump at the same time?

  - by Jan

  I'm having some trouble with the game I started. http://testing.fyrastudio.com/lab/tweetOlympics/v0.002/ The thing is that i have an athlete running and he must jump at the same time. A race with obstacles. I have him running (with pressing the letter Q repeateadly). I also have him jumping (with letter P) But the thing is that when he runs and jumps at the same time, he seems to be jumping at the same place, instead of going forward with the jump... any ideas how can I fix this?? This is the code I'm using for running and jumping on a continuos loop. //if accelearing and the last time that he accelerated was less than X seconds ago, hes running an accelaring if (athlete.accelerating && timeCurrent - athlete.last_acceleration > athlete.delay_acceleration) { athlete.accelerating = false; athlete.last_acceleration = timeCurrent; athlete.running = true; } if (!athlete.accelerating && timeCurrent - athlete.last_acceleration > athlete.delay_acceleration) { athlete.decelerating = true; } if(athlete.decelerating && timeCurrent - athlete.last_deceleration > athlete.delay_deceleration){ if(athlete.speed >= 1){ //athlete starts to decelarate athlete.last_deceleration = timeCurrent; athlete.decelerate(); }else { athlete.running = false; } } if (athlete.running) { athlete.position += athlete.speed; } if (athlete.jumping) { if (athlete.jump_height < 1) { athlete.jump_height = 1; }else { if (athlete.jump_height >= athlete.jump_max_height) { athlete.jump_height = athlete.jump_max_height; athlete.jumping = false; }else { athlete.jump_height = athlete.jump_height * athlete.jump_speed; } } } if (!athlete.jumping) { if(athlete.jump_height > 1){ athlete.jump_height = athlete.jump_height * 0.9; }else { athlete.jump_height = 1; } } athlete.scaleX = athlete.scaleY = athlete.jump_height; athlete.x = athlete.position; Thanks!

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• OPN Exchange @ OpenWorld - Don't Overlook TestFest!

  - by Get_Specialized!

  As part of the Oracle PartnerNetwork Exchange @ OpenWorld conference a “Test Fest” will be taking place from Monday, October 1st - Thursday, October 4th 2012 at the Marriott Marquis Hotel. Were you requested by management to get the most out of your OOW experience and expense?  Looking for something that will help you or a team member get approved by your management to attend this year? Seeking a way to justify having your technical expert out to OOW to help you close a deal?  Then take advantage of training available onsite for your staff or yourself during Oracle OpenWorld; no matter if you are primarily coming to staff a booth, present a session, meet with customers, or attend the OPN PartnerNetwork Exchange. With limited seating available, its adviseable to pre-register today to: Get recognized for your skills, with an OPN Specialist accreditation Take exams that are free of charge for Oracle PartnerNetwork Exchange attendees Help your company get Specialized in a higher level of the OPN Program Get a list of exams , study materials and pre-register using the Schedule Builder tool to reserve a seat in one of the 10 sessions offered on a first come, first serve basis. Remember upon arrival to the testing room, you will need to show proof of valid OPN Membership and have your valid Pearson Vue account ID. For any questions, email the OPN Communications team. Test Fest Schedule Date Session 1 Session 2 Session 3 Monday - October 1 10:30 AM - 12:30 PM 1:00 PM - 3:00 PM 3:30 PM - 5:30 PM Tuesday - October 2 10:00 AM - 12:00 PM 12:30 PM - 2:30 PM Wednesday - October 3 10:30 AM - 12:30PM 1:00 PM - 3:00 PM 3:30 PM - 5:30PM Thursday - October 4 11:00 AM - 1:00 PM 1:30 PM- 3:30 PM Look forward to meeting you at the Oracle PartnerNetwork Exchange

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• Static DataTable or DataSet in a class - bad idea?

  - by Superbest

  I have several instances of a class. Each instance stores data in a common database. So, I thought "I'll make the DataTable table field static, that way every instance can just add/modify rows to its own table field, but all the data will actually be in one place!" However, apparently it's a bad idea to do use static fields, especially if it's databases: Don't Use "Static" in C#? Is this a bad idea? Will I run into problems later on if I use it? This is a small project so I can accept no testing as a compromise if that is the only drawback. The benefit of using a static database is that there can be many objects of type MyClass, but only one table they all talk to, so a static field seems to be an implementation of exactly this, while keeping syntax concise. I don't see why I shouldn't use a static field (although I wouldn't really know) but if I had to, the best alternative I can think of is creating one DataTable, and passing a reference to it when creating each instance of MyClass, perhaps as a constructor parameter. But is this really an improvement? It seems less intuitive than a static field.

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• Which things instantly ring alarm bells when looking at code? [closed]

  - by FinnNk

  I attended a software craftsmanship event a couple of weeks ago and one of the comments made was "I'm sure we all recognize bad code when we see it" and everyone nodded sagely without further discussion. This sort of thing always worries me as there's that truism that everyone thinks they're an above average driver. Although I think I can recognize bad code I'd love to learn more about what other people consider to be code smells as it's rarely discussed in detail on people's blogs and only in a handful of books. In particular I think it'd be interesting to hear about anything that's a code smell in one language but not another. I'll start off with an easy one: Code in source control that has a high proportion of commented out code - why is it there? was it meant to be deleted? is it a half finished piece of work? maybe it shouldn't have been commented out and was only done when someone was testing something out? Personally I find this sort of thing really annoying even if it's just the odd line here and there, but when you see large blocks interspersed with the rest of the code it's totally unacceptable. It's also usually an indication that the rest of the code is likely to be of dubious quality as well.

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• Questioning one of the arguments for dependency injection: Why is creating an object graph hard?

  - by oberlies

  Dependency injection frameworks like Google Guice give the following motivation for their usage (source): To construct an object, you first build its dependencies. But to build each dependency, you need its dependencies, and so on. So when you build an object, you really need to build an object graph. Building object graphs by hand is labour intensive (...) and makes testing difficult. But I don't buy this argument: Even without dependency injection, I can write classes which are both easy to instantiate and convenient to test. E.g. the example from the Guice motivation page could be rewritten in the following way: class BillingService { private final CreditCardProcessor processor; private final TransactionLog transactionLog; // constructor for tests, taking all collaborators as parameters BillingService(CreditCardProcessor processor, TransactionLog transactionLog) { this.processor = processor; this.transactionLog = transactionLog; } // constructor for production, calling the (productive) constructors of the collaborators public BillingService() { this(new PaypalCreditCardProcessor(), new DatabaseTransactionLog()); } public Receipt chargeOrder(PizzaOrder order, CreditCard creditCard) { ... } } So there may be other arguments for dependency injection (which are out of scope for this question!), but easy creation of testable object graphs is not one of them, is it?

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• Windows Phone Camp Hands On Accelerator Lab in Dallas

  - by Bill Osuch

  Microsoft is hosting another Windows Phone Accelerator lab this December 13-15 in Dallas: Do you have the next million dollar idea that you just can’t find the time to finish?  Do you already have an app for Android and iPhone that you want to expand into new markets?    It’s time to turn your napkin sketches and leverage your hard work into real, sellable apps for Windows Phone in ONE WEEK!  Join us for a special Windows Phone event you don’t want to miss - Windows Phone Accelerator!    In this 3-day developer retreat, we will have experts on hand to help you build, test, pitch, and deploy your app into the Windows Phone Marketplace.  You will have hands on technical assistance, Marketplace subscriptions, and developer phones for testing.    It’s a great chance to get step-by-step advice from Microsoft and community experts and all you have to do is bring your existing app or app idea that you are ready to build.   Seating is limited and registration is not guaranteed.  Get your spot today!   Agenda: Tuesday, 9am-5pm Kick-off Open Lab; 1:1 Meetings   Wednesday, 8:30am-6pm Open Lab; 1:1 Meetings   Thursday, 8:30am-1pm Open Lab; 1:1 Meetings   Thursday, 1pm - 3pm App pitches & Giveaways Register at this link

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