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• Scheme vs Haskell for an Introduction to Functional Programming?

  - by haziz

  I am comfortable with programming in C and C#, and will explore C++ in the future. I may be interested in exploring functional programming as a different programming paradigm. I am doing this for fun, my job does not involve computer programming, and am somewhat inspired by the use of functional programming, taught fairly early, in computer science courses in college. Lambda calculus is certainly beyond my mathematical abilities, but I think I can handle functional programming. Which of Haskell or Scheme would serve as a good intro to functional programming? I use emacs as my text editor and would like to be able to configure it more easily in the future which would entail learning Emacs Lisp. My understanding, however, is that Emacs Lisp is fairly different from Scheme and is also more procedural as opposed to functional. I would likely be using "The Little Schemer" book, which I have already bought, if I pursue Scheme (seems to me a little weird from my limited leafing through it). Or would use the "Learn You a Haskell for Great Good" if I pursue Haskell. I would also watch the Intro to Haskell videos by Dr Erik Meijer on Channel 9. Any suggestions, feedback or input appreciated. Thanks. P.S. BTW I also have access to F# since I have Visual Studio 2010 which I use for C# development, but I don't think that should be my main criteria for selecting a language.

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• Why Register for Oracle PartnerNetwork Exchange @ OpenWorld?

  - by Richard Lefebvre

  Oracle Partner Network Exchange @ OpenWorld premiers this year with a dedicated program of keynotes and sessions created to enhance the opportunities for partners to learn from and network with Oracle executives and experts. The new program also provides more informal opportunities than ever throughout the week to meet up with the people who are most important to your business: customers, prospects, and colleagues.   Program Benefits:  • Partner Keynote, hosted by Judson Althoff, SVP, WWA&C, Oracle (September 30) • 35+ Partner specific sessions • Free Certification testing • Exclusive access to the OPN Lounge • All Oracle OpenWorld and JavaOne keynotes • Oracle OpenWorld and JavaOne Exhibition Halls • Executive Solution sessions • Scene and Be Heard Theater • Oracle OpenWorld Welcome Reception (September 30) • Lunch in the Howard Street Tent (October 1 through October 4) • It's A Wrap! closing event (October 4) •Oracle OpenWorld Conference Materials   TOP 5 REASON TO ATTEND:   1.NETWORK WITH YOUR TOP PROSPECTS • Access to 40,000+ customers who will be attending OpenWorld and JavaOne Conferences 2.HEAR FROM TOP ORACLE EXECUTIVES • Partner keynote led by Judson Althoff, SVP, WWA&C, Oracle 3.  GET THE TOOLS TO DIFFERENTIATE YOURSELVES FROM YOUR COMPETITORS • 35+ sessions tailored to Partners • All sessions will be held Monday – Thursday during main OpenWorld conference hours • Sessions led by key Oracle Executives 4.  FREE CERTIFICATION TESTING 5.  OPENWORLD APPRECIATION PASS CAN BE ADDED ON TO THE OPN EXCHANGE PASS FOR ONLY $200!

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• Join our webinar: What CFOs Want From IT -- Unlocking Growth with Emerging Technologies

  - by Di Seghposs

  According to the 2012 Gartner-FEI research, big data, analytics, and new mobile, social & cloud computing platforms are increasingly on the CFOs radar screen because of their potential to unlock new growth opportunities. Join Oracle Chair Jeff Henley, & Oracle's Reggie Bradford & Rich Clayton as they explore CFO strategies & best practices for driving real value from IT investments in these areas: Why CFOs should get involved in big data and business analytics projects, and what best practices they can adopt to ensure their success How CFOs are leveraging new mobile and cloud computing platforms to address enterprise demands quickly and cost effectively How CFOs can partner with CMOs to maximize the value of IT investments in social technologies that can help create new growth opportunities CFOs have more responsibility over IT than ever before.  Learn how Oracle unlocks the transformative power of IT to take your business to the next level of performance.   Date:Tuesday, November 27, 2012 Time:8:00 a.m. PST / 11:00 a.m. EST Register now.

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• Thinking skills to be a good programmer

  - by Paul

  I have been programming for last 15 years with non-CS degree. Main reason I got into programming was that I liked to learn new things and apply them to my work. And I was able to find and fix programming errors and their causes faster than others. But I never find myself a a guru or an expert, maybe due to my non-CS major. And when I saw great programmers, I observed they are very good, much better than me of course, at solving problems. One skill I found good in my mid-career is thinking of requirements and tasks in a reverse order and in abstract. In that way, I can see what is really required for me to do without detail and can quickly find parts of solution that already exist. So I wonder if there are other thinking skills to be a good programmer. I've followed Q&As below and actually read some of books recommended there. But I couldn't really pickup good methods directly applicable for my programming work. What non-programming books should a programmer read to help develop programming/thinking skills? Skills and habits to develop to be good at programming (I'm a newbie)

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• How do I choose which way to enable/disable, start/stop, or check the status of a service?

  - by Glyph

  If I want to start a system installed service, I can do: # /etc/init.d/some-svc start # initctl start some-svc # service some-svc start # start some-svc If I want to disable a service from running at boot, I can do: # rm /etc/rc2.d/S99some-svc # update-rc.d some-svc disable # mv /etc/init/some-svc.conf /etc/init/some-svc.conf.disabled Then there are similarly various things I can do to enable services for starting at boot, and so on. I'm aware of the fact that upstart is a (relatively) new thing, and I know about how SysV init used to work, and I'm vaguely aware of a bunch of D-Bus nonsense, but what I don't know is how one is actually intended to interface with this stuff. For example, I don't know how to easily determine whether a service is an Upstart job or a legacy SysV thing, without actually reading through the source of its shell scripts extensively. So: if I want to start or stop a service, either at the moment or persistently, which of these tools should I use, and why? If the answer depends on some attribute (like "this service supports upstart") then how do I quickly and easily learn about that attribute of an installed package? Relatedly, are there any user interface tools which can safely and correctly interact with the modern service infrastructure (upstart, and/or whatever its sysv compatibility is)? For example, could I reliably use sysv-rc-conf to determine which services should start?

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• Reinventing the Wheel, why should I?

  - by Mercfh

  So I have this problem, it may be my OCD (i have OCD it's not severe.....but It makes me very..lets say specific about certain things, programming being one of them) or it may be the fact that I graduated college and still feel "meh" at programming. Reading This made me think "OH thats me!" but thats not really my main problem. My big problem is....anytime im using a high level language/API/etc. I always think to myself that im not really "programming". I know I know...it sounds stupid. But Like I feel like....if i can't figure out how to do it at the lowest level then Im not really "understanding" it. I do this for just about every new technology I learn. I look at the lowest level and try to understand it. Sometimes I do.....most of the time I don't, I mean i've only really been programming for 4 years (at college, if you even call it programming.....our university's program was "meh"). For instance I do a little bit of embedded programming (with the Atmel AVR 8bits/Arduino stuff). And I can't bring myself to use the C compiler, even though it's 8 million times easier than using assembly......it's stupid I know... Anyone else feel like this, I think it's just my OCD that makes me feel this way....but has anyone else ever felt like they need to go down to the lowest level of the language to even be satisfied with using it? I apologize for the very very odd question, but I think it really hinders me in getting deep seeded into a programming language and making a real application of my own. (it's silly I know)

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• The most mind-bending programming language? [closed]

  - by Xepoch

  From a reasonably common programming language, which do you find to be the most mind-bending? I have been listening to a lot of programming podcasts and taking some time to learn some new languages that are being considered upcoming, and important. I'm not necessarily talking about BrainFuck, but which language would you consider to be one that challenges the common programming paradigms? For me, I did some functional and logic (ex. Prolog) programming in the 90s, so can't say that I find anything special there. I am far from being an expert in it, but even today the most mind-bending programming language for me is Perl. Not because "Hello World" is hard to implement but rather there is so much lexical flexibility that some of the hardest solutions can be decomposed so poetically that I have to walk outside away from my terminal to clear my head. I'm not saying I'd likely sell a commercial software implementation, just that there is a distinct reason Perl is so (in)famous. Just look at the basic list of books on it. So, what is your mind-bending language that promotes your better programming and practices?

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• Circle collision detection and Vector math: HELP?

  - by Griffin

  Hey so i'm currently going through the wildbunny blog to learn about collision detection, but i'm a bit confused on how the vectors he's talking about come into play QUOTED BLOG: p = ||A-B|| – (r1+r2) The two spheres are penetrating by distance p. We would also like the penetration vector so that we can correct the penetration once we discover it. This is the vector that moves both circles to the point where they just touch, correcting the penetration. Importantly it is not only just a vector that does this, it is the only vector which corrects the penetration by moving the minimum amount. This is important because we only want to correct the error, not introduce more by moving too much when we correct, or too little. N = (A-B) / ||A-B|| P = N*p Here we have calculated the normalised vector N between the two centres and the penetration vector P by multiplying our unit direction by the penetration distance. Ok so i understand that p is the distance each circle is penetrating each other, but i don't get what exactly N and P is. it seems to me N is just the coordinates of the 3rd point of the right trianlge formed by point A and B (A-B) then being divided by the hypotenuse of that triangle or distance between A and B (||A-B||) Whats the significance of this? Also, what is the penetration vector used for? It seems to me like a movement that one of the circles would perform to get un-penetrated.

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• Is this project Structure Valid?

  - by rafuru

  I have a dilemma: In the university we learn to create modular software (on java), but this modularity is explained using a single project with packages (a package for business, another one for DAOS and another one for the model, oh and a last package for frontend). But in my work we use the next structure: I will try to explain: First we create a java library project where the model (entities classes) are created in a package. Next we create an EJB named DAOS and using the netbeans wizard we store the DAOS interfaces in the library project in another package , these interfaces are implemented in the DAOS bean. So the next part is the business logic, we create a business EJB for each group of functions , again using the wizard we store the interface in the java library project in another package then is implemented on the business bean. The final part (for the backend) is a bean that I have suggested: a Facade bean who will gather every method of the business beans in a single bean and this has an interface too that is created in our library project and implemented in the bean. So the next part is call the facade module on the web project. But I don't know how valid or viable is this, maybe I'm doing everything wrong and I don't even know! so I want to ask your opinion about this.

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• Wordnik Accelerator

  - by prabhpreet

  Wow, creating IE Accelerators is superbly easy. If you want to learn how to create one, go here (some MSDN blog) and the MSDN documentation (clearly written). I was fed up of dictionary.com bringing all those popups and the stupid definitions of Google's dictionary. So I decided to scratch my own itch. I randomly stumbled on the site called Wordnik and it provides with all examples plus definitions plus lots more for words and its popup-free (as far as I know). So I decided to write and accelerator. Here is the source code (Yes, this is it): <?xml version="1.0" encoding="utf-8"?> <os:openServiceDescription xmlns:os="http://www.microsoft.com/schemas/openservicedescription/1.0"> <os:homepageUrl>http://www.wordnik.com</os:homepageUrl> <os:display> <os:name>View on Wordnik</os:name> <os:description>Looking up words on an awesome word site called Wordnik </os:description> <os:icon>http://www.wordnik.com/favicon.ico</os:icon> </os:display> <os:activity category="Define"> <os:activityAction context="selection"> <os:execute method="get" action="http://www.wordnik.com/words/{selection}" ></os:execute> </os:activityAction> </os:activity> </os:openServiceDescription> That’s it. To get it, go here. Enjoy!

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• Why do memory-managed languages retain the `new` keyword?

  - by Channel72

  The new keyword in languages like Java, Javascript, and C# creates a new instance of a class. This syntax seems to have been inherited from C++, where new is used specifically to allocate a new instance of a class on the heap, and return a pointer to the new instance. In C++, this is not the only way to construct an object. You can also construct an object on the stack, without using new - and in fact, this way of constructing objects is much more common in C++. So, coming from a C++ background, the new keyword in languages like Java, Javascript, and C# seemed natural and obvious to me. Then I started to learn Python, which doesn't have the new keyword. In Python, an instance is constructed simply by calling the constructor, like: f = Foo() At first, this seemed a bit off to me, until it occurred to me that there's no reason for Python to have new, because everything is an object so there's no need to disambiguate between various constructor syntaxes. But then I thought - what's really the point of new in Java? Why should we say Object o = new Object();? Why not just Object o = Object();? In C++ there's definitely a need for new, since we need to distinguish between allocating on the heap and allocating on the stack, but in Java all objects are constructed on the heap, so why even have the new keyword? The same question could be asked for Javascript. In C#, which I'm much less familiar with, I think new may have some purpose in terms of distinguishing between object types and value types, but I'm not sure. Regardless, it seems to me that many languages which came after C++ simply "inherited" the new keyword - without really needing it. It's almost like a vestigial keyword. We don't seem to need it for any reason, and yet it's there. Question: Am I correct about this? Or is there some compelling reason that new needs to be in C++-inspired memory-managed languages like Java, Javascript and C#?

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• Use MvcContrib Grid to Display a Grid of Data in ASP.NET MVC

  The past six articles in this series have looked at how to display a grid of data in an ASP.NET MVC application and how to implement features like sorting, paging, and filtering. In each of these past six tutorials we were responsible for generating the rendered markup for the grid. Our Views included the <table> tags, the <th> elements for the header row, and a foreach loop that emitted a series of <td> elements for each row to display in the grid. While this approach certainly works, it does lead to a bit of repetition and inflates the size of our Views. The ASP.NET MVC framework includes an HtmlHelper class that adds support for rendering HTML elements in a View. An instance of this class is available through the Html object, and is often used in a View to create action links (Html.ActionLink), textboxes (Html.TextBoxFor), and other HTML content. Such content could certainly be created by writing the markup by hand in the View; however, the HtmlHelper makes things easier by offering methods that emit common markup patterns. You can even create your own custom HTML Helpers by adding extension methods to the HtmlHelper class. MvcContrib is a popular, open source project that adds various functionality to the ASP.NET MVC framework. This includes a very versatile Grid HTML Helper that provides a strongly-typed way to construct a grid in your Views. Using MvcContrib's Grid HTML Helper you can ditch the <table>, <tr>, and <td> markup, and instead use syntax like Html.Grid(...). This article looks at using the MvcContrib Grid to display a grid of data in an ASP.NET MVC application. A future installment will show how to configure the MvcContrib Grid to support both sorting and paging. Read on to learn more! Read More >

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• Game programming basics under Windows

  - by dreta

  I've been trying to learn some Windows programming using the Win32 API. Now, i'm used to working with the OS layer being abstracted away, mostly thanks to libraries like SFML or Allegro. Could you guys help me out and tell me if i'm thinking right here. The place for my gameloop is where i'm reading the messages? while (TRUE) { if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) { if (msg.message == WM_QUIT) break ; TranslateMessage (&msg) ; DispatchMessage (&msg) ; } else { //my game loop goes here } } Now the slightly bigger issue, that is, drawing. Do i run my drawing where i normaly do it, inside the game loop after the game logic? Or do i do it when WM_PAIN is being called and just call InvalidateRect (hwnd, NULL, TRUE); when i want to draw? This does feel weird, the WM_PAINT is a queued message, so i don't know for sure when it'll be called. So if i wanted to avoid this, do i just get the device handle inside the game loop and only ValidateRect (hwnd, NULL); in the WM_PAINT case (beside the ValidateRect (hwnd, NULL); called after drawing in the game loop)? Actually, now that i think about it, do i even need WM_PAINT in this situation or can i skip it and let DefWindowProc handle it (does it validate the screen if WM_PAINT isn't processed)? If this is any important, i'm setting up my code for OpenGL.

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• Oracle Enterprise Manager 12c R3 introduces advancements in cloud lifecycle and operations management

  - by Anand Akela

  Oracle Enterprise Manager 12c Release 3 (R3) was announced ( Press Release ) earlier today. It is now available for download at  OTN . This latest release features improvements in several areas, including: Improvements to Private Cloud and Engineered Systems Management Expanded Middleware and Application Management Capabilities Efficiency Gains for Enterprise manager Users in EM’s Enterprise-Ready Framework You can learn more about what's new in the Oracle Enterprise Manager 12c R3 in the Enterprise Manager 12c documentation . You will see more blogs and details about the new features during the next few weeks. Please let us what On July 18th, you can join us at a webcast to hear Thomas Kurian, EVP of Product Development on what Oracle Engineering has achieved with Oracle Enterprise Manager 12c Release 3 to address these challenges. Later, during this webcast, Oracle experts will discuss the latest capabilities in Oracle Enterprise Manager 12c Release 3 for cloud lifecycle and operations management. The presentation will be followed by a live Q&A session with Oracle experts. You can also join us online on Twitter to get your specific questions answered. Please use hash tag #em12c to join the conversation. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Register Now for the Webcast! Stay Connected: Twitter |  Face book |  You Tube |  Linked in |  Newsletter

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• Complexity of defense AI

  - by Fredrik Johansson

  I have a non-released game, and currently it's only possible to play with another human being. As the game rules are made up by me, I think it would be great if new players could learn basic game play by playing against an AI opponent. I mean it's not like Tennis, where the majority knows at least the fundamental rules. On the other hand, I'm a bit concerned that this AI implementation can be quite complex. I hope you can help me with an complexity estimation. I've tried to summarize the gameplay below. Is this defense AI very hard to do? Basic Defense Game Play Player Defender can move within his land, i.e. inside a random, non-convex, polygon. This land will also contain obstacles modeled as polygons, that Defender has to move around. Player Attacker has also a land, modeled as another such polygon. Assume that Defender shall defend against Attacker. Attacker will then throw a thingy towards Defender's land. To be rewarded, Attacker wants to hit Defender's land, and Defender will want to strike away the thingy from his land before it stops to prevent Attacker from scoring. To feint Defender, Attacker might run around within his land before the throw, and based on these attacker movements Defender shall then continuously move to the best defense position within his land.

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• Stuff you learned in school, that you have never used again?

  - by Mercfh

  Obviously we learn plenty of things in our University/College/Whatever that probably don't apply to everyday use, but is there anything that stands out particularly? Maybe something that was concentrated ALOT on? For me it was def. 2 things: OO Concepts and Pointers I still use OO, but not nearly to the amount people made it out to be, i can see where it'd be useful but in my line of work we don't have huge amounts of classes, maybe a couple at most. And there certainly isn't much OO reuse (i finally figured out what that means lol) Pointers are another thing, again I can see where they'd be useful...however I barely barely ever touch them, nor do the others I work with. I guess language choice has alot to do with that but still. What about you guys? edit: For those who are asking I work for a Large Printer company, and most of the Applications we work on are Java+XML and Actionscript for "Printer Apps". But we are moving towards other languages (think like webkits and stuff). So the Code amounts per parts are quite small. I never say OO wasn't useful I just said I personally havent seen it used in my workplace much.

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• Does anybody know of any resources to achieve this particular "2.5D" isometric engine effect?

  - by Craig Whitley

  I understand this is a little vague, but I was hoping somebody might be able to describe a high-level workflow or link to a resource to be able to achieve a specific isometric "2.5D" tile engine effect. I fell in love with http://www.youtube.com/watch?v=-Q6ISVaM5Ww this engine. Especially with the lighting and the shaders! He has a brief description of how he achieved what he did, but I could really use a brief flow of where you would start, what you would read up on and learn and the logical order to implement these things. A few specific questions: 1) Is there a heightmap on the ground texture that lets the light reflect brighter on certain parts of it? 2) "..using a special material which calculates the world-space normal vectors of every pixel.." - is this some "magic" special material he has created himself, or can you hazard a guess at what he means? 3) with relation to the above quote - what does he mean by 'world-space normal vectors of every pixel'? 4) I'm guessing I'm being a little bit optimistic when I ask if there's any 'all-in-one' tutorial out there? :)

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• Pausing and Resuming the jQuery / ASP.NET News Ticker

  Many websites display a news ticker of one sort or another. A news ticker is a user interface element that displays a subset of a list of items, cycling through them one at a time after a set interval. In December 2010 I wrote an article titled Use jQuery and ASP.NET to Build a News Ticker that explored how to create your own news ticker widget using jQuery and ASP.NET. The news ticker's content is defined as an unordered list (<ul>) where each list item (<li>) represents a news headline. Once the ticker's content is defined, having it cycle through the head lines is as simple as calling the JavaScript function startTicker(id, numberToShow, duration), which begins cycling the headlines in the unordered list with the specified id, showing numberToShow headlines at a time and cycling to the next headline every duration number of milliseconds. This installment shows how to enhance the news ticker to enable pausing and resuming. With these enhancements, the ticker can be configured to automatically pause rotating its headlines when the user mouses over it, and to resume rotating them once the user mouses out. Similarly, with a bit of additional markup and script you can add pause and play buttons to a ticker, allowing a user to start and stop the ticker by clicking an image or button. Read on to learn more! Read More >

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• KISS principle applied to programming language design?

  - by Giorgio

  KISS ("keep it simple stupid", see e.g. here) is an important principle in software development, even though it apparently originated in engineering. Citing from the wikipedia article: The principle is best exemplified by the story of Johnson handing a team of design engineers a handful of tools, with the challenge that the jet aircraft they were designing must be repairable by an average mechanic in the field under combat conditions with only these tools. Hence, the 'stupid' refers to the relationship between the way things break and the sophistication available to fix them. If I wanted to apply this to the field of software development I would replace "jet aircraft" with "piece of software", "average mechanic" with "average developer" and "under combat conditions" with "under the expected software development / maintenance conditions" (deadlines, time constraints, meetings / interruptions, available tools, and so on). So it is a commonly accepted idea that one should try to keep a piece of software simple stupid so that it easy to work on it later. But can the KISS principle be applied also to programming language design? Do you know of any programming languages that have been designed specifically with this principle in mind, i.e. to "allow an average programmer under average working conditions to write and maintain as much code as possible with the least cognitive effort"? If you cite any specific language it would be great if you could add a link to some document in which this intent is clearly expressed by the language designers. In any case, I would be interested to learn about the designers' (documented) intentions rather than your personal opinion about a particular programming language.

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• How can rotating release managers improve a project's velocity and stability?

  - by Yannis Rizos

  The Wikipedia article on Parrot VM includes this unreferenced claim: Core committers take turns producing releases in a revolving schedule, where no single committer is responsible for multiple releases in a row. This practice has improved the project's velocity and stability. Parrot's Release Manager role documentation doesn't offer any further insight into the process, and I couldn't find any reference for the claim. My first thoughts were that rotating release managers seems like a good idea, sharing the responsibility between as many people as possible, and having a certain degree of polyphony in releases. Is it, though? Rotating release managers has been proposed for Launchpad, and there were some interesting counterarguments: Release management is something that requires a good understanding of all parts of the code and the authority to make calls under pressure if issues come up during the release itself The less change we can have to the release process the better from an operational perspective Don't really want an engineer to have to learn all this stuff on the job as well as have other things to take care of (regular development responsibilities) Any change of timezones of the releases would need to be approved with the SAs and: I think this would be a great idea (mainly because of my lust for power), but I also think that there should be some way making sure that a release manager doesn't get overwhelmed if something disastrous happens during release week, maybe by have a deputy release manager at the same time (maybe just falling back to Francis or Kiko would be sufficient). The practice doesn't appear to be very common, and the counterarguments seem reasonalbe and convincing. I'm quite confused on how it would improve a project's velocity and stability, is there something I'm missing, or is this just a bad edit on the Wikipedia article? Worth noting that the top voted answer in the related "Is rotating the lead developer a good or bad idea?" question boldly notes: Don't rotate.

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• Optimize Many-to-Many with SUMMARIZE and Other Techniques

  - by Marco Russo (SQLBI)

  We are still in the early days of DAX and even if I have been using it since 2 years ago, there is still a lot to learn on that. One of the topics that historically interests me (and many of the readers here, probably) is the many-to-many relationships between dimensions in a dimensional data model. When I and Alberto wrote the The Many to Many Revolution 2.0 we discovered the SUMMARIZE based pattern very late in the whitepaper writing. It is very important for performance optimization and it should be always used. In the last month, Gerhard Brueckl also presented an approach based on cross table filtering behavior that simplify the syntax involved, even if it’s harder to explain how it works internally. I published a short article titled Optimize Many-to-Many Calculation in DAX with SUMMARIZE and Cross Table Filtering on SQLBI website just to provide a quick reference to the three patterns available. A further study is still required to compare performance between SUMMARIZE and Cross Table Filtering patterns. Up to now, I haven’t observed big differences between them, even if their execution plans might be not identical and this suggest me that depending on other conditions you might favor one over the other.

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• Eclipse and Oracle Fusion Development - Free Virtual Event, July 10th

  - by Carlos Chang

    Below is one of many sessions covering Oracle Fusion Development.  It's a free virtual event on July 10. Live chats with Oracle's technical staff.  Check it out! Oracle Enterprise Pack for Eclipse - ADF Development Oracle ADF Development has never been easier in Eclipse. During this session we will explore best practices to use standard Java EE technologies like EJBs and JPA to build rich ADF applications based on ADF Data Controls, Task Flows, and ADF Faces components all within Oracle Enterprise Pack for Eclipse (OEPE) 12c. We will also look at how OEPE’s AppXRay technology enables developers to understand and visualize dependency relationships between ADF components, xml descriptors, and Java objects in order to drive validation, content assist, and refactoring. Free Virtual Developer Day - Fusion Middleware Development Join a free online developer day where you can learn about the various components that make up the Oracle Fusion Development platform including ADF, ADF Mobile, Oracle WebCenter Portal, Business Intelligence and more. Online seminars and hands-on labs available directly from your browser. Join us on July 10!  Register here. 

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• Modelling work-flow plus interaction with a database - quick and accessible options

  - by cjmUK

  I'm wanting to model a (proposed) manufacturing line, with specific emphasis on interaction with a traceability database. That is, various process engineers have already mapped the manufacturing process - I'm only interested in the various stations along the line that have to talk to the DB. The intended audience is a mixture of project managers, engineers and IT people - the purpose is to identify: points at which the line interacts with the DB (perhaps going so far as indicating the Store Procs called at each point, perhaps even which parameters are passed.) the communication source (PC/Handheld device/PLC) the communication medium (wireless/fibre/copper) control flow (if leak test fails, unit is diverted to repair station) Basically, the model will be used as a focus different groups on outstanding tasks; for example, I'm interested in the DB and any front-end app needed, process engineers need to be thinking about the workflow and liaising with the PLC suppliers, the other IT guys need to make sure we have the hardware and comms in place. Obviously I could just improvise in Visio, but I was wondering if there was a particular modelling technique that might particularly suit my needs or my audience. I'm thinking of a visual model with supporting documentation (as little as possible, as much as is necessary). Clearly, I don't want something that will take me ages to (effectively) learn, nor one that will alienate non-technical members of the project team. So far I've had brief looks at BPMN, EPC Diagrams, standard Flow Diagrams... and I've forgotten most of what I used to know about UML... And I'm not against picking and mixing... as long as it is quick, clear and effective. Conclusion: In the end, I opted for a quasi-workflow/dataflow diagram. I mapped out the parts of the manufacturing process that interact with the traceability DB, and indicated in a significantly-simplified form, the data flows and DB activity. Alongside which, I have a supporting document which outlines each process, the data being transacted for each process (a 'data dictionary' of sorts) and details of hardware and connectivity required. I can't decide whether is a product of genius or a crime against established software development practices, but I do think that is will hit the mark for this particular audience.

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• Distributed Development Tools -- (Version control and Project Management)

  - by Macy Abbey

  I've recently become responsible for choosing which source control and project management software to use for a company that employs me. Currently it uses Jira (project management) and Subversion (version control). I know there are many other options out there -- the ones I know about are all in this article http://mashable.com/2010/07/14/distributed-developer-teams/ . I'm leaning towards recommending they just stay with what they have as it seems workable and any change would have to be worth the cost of switching to say github/basecamp or some other solution. Some details on the team: It's a distributed development shop. Meetings of the whole team in one room are rare. It's currently a very small development team (three developers). The project management software is used by developers and a product manager or two. What are you experiences with version control and project management web applications? Are there any you would recommend and you think are worth the switching cost of time to learn new services / implementing the change? Edit: After educating myself further on the options it appears DVCS offer powerful benefits that may be worth investing in now as opposed to later in the company's lifetime when the switching cost is higher: I'm a Subversion geek, why I should consider or not consider Mercurial or Git or any other DVCS?

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• Silverlight 4 &ndash; Coded UI Framework Video Tutorial

  - by mbcrump

  With the release of Visual Studio 2010 Feature Pack 2, Microsoft included the Coded UI Test framework. With this release it is possible to create automated test with just a few mouse clicks. This is a very powerful feature that all Silverlight developers need to learn. Instead of my normal blog post, I have created a video tutorial that walks you through it starting from “File” –> New Project. I hope you enjoy and please leave feedback. Video Tutorial (short 9 minute video): Slides from the demo (only 3): Silverlight 4 – Coded UI Testing Code for the MainPage.xaml that was used in the Demo. For the sake of time, I did not go into the AutomationProperties.Name that I used for the TextBox or Button. I added that for each element . <Grid x:Name="LayoutRoot" Background="White" Height="100" Width="350"> <Grid.ColumnDefinitions> <ColumnDefinition/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <TextBlock Padding="15" Grid.Column="0" TextAlignment="Right">Name</TextBlock> <TextBox AutomationProperties.Name="txtAP" Grid.Column="1" Height="25" TextAlignment="Right" Name="txtName" /> <Button AutomationProperties.Name="btnAP" Grid.Row="1" Grid.Column="1" Content="Click for Name" x:Name="btnMessage" Click="btnMessage_Click" /> </Grid>  Subscribe to my feed

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