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  • Managing Social Relationships for the Enterprise – Part 1

    - by Michael Hylton
    By Reggie Bradford, Senior Vice President, Oracle  Today, Mark Hurd, President of Oracle, Thomas Kurian, Executive Vice President of Oracle and I discussed the strategic importance of how social media is impacting the enterprise and how it is changing the way customers, prospects employees and investors interact with brands worldwide.  Oracle understands that the consumer is in control and as such, brands must evolve and change to meet growing needs. In addition, according to social media thought leader and Analyst from Altimeter Group, Jeremiah Owyang, companies now average 178 corporate-owned social media accounts. When Oracle added leading social marketing, listening analytics and development tools from Vitrue, Collective Intellect and Involver to its Oracle’s Cloud Services Suite we went beyond providing a single set of tools. We developed an entire framework to include a comprehensive social relationship management suite to help companies move beyond the social enterprise and achieve the social-enabled enterprise.  The fundamental shift from transaction to engagement means that enterprises need not only a social strategy, but should also ensure that the information and data received from social initiatives flow back to marketing, sales, support and service. Doing so enables companies to deliver a proactive and compelling experience and provides analytics to turn engagement into opportunity – and ultimately that opportunity into revenue.  On September 13, 2012, I am delighted to sit down with Jeremiah to further the discussion about how enterprises are addressing social media strategies and managing content.  In addition, we will be taking your questions after the webinar via Twitter (@Oracle, @ReggieBradford, @cfinn, @jowyang). Use #oracle and #socbiz to submit questions and follow the conversation. I look forward to speaking with you and answering your questions online.  For more information about becoming a social-enabled enterprise, visit www.oracle.com/social. And don’t miss the insights of other social business thought leaders at www.oracle.com/goto/socialbusiness.

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  • Why does everybody hate SharePoint?

    - by Ryan Michela
    Reading this topic about the most over hyped technologies I noticed that SharePoint is almost universally reviled. My experience with SharePoint (especially the most recent versions) is that it accomplishes it's core competencies smartly. Namely: Centralized document repository - get all those office documents out of email (with versioning) User-editible content creation for internal information disemination - look, an HR site with current phone numbers and the vacation policy Project collaboration - a couple clicks creates a site with a project's documents, task list, simple schedule, threaded discussion, and possibly a list of all project related emails. Very basic business automation - when you fill out the vacation form, an email is sent to HR. My experience is that SharePoint only gets really ugly when an organization tries to push it in a direction it isn't designed for. SharePoint is not a CRM, ERP, bug database or external website. SharePoint is flexible enough to serve in a pinch, but it is no replacement for a dedicated tool. (Microsoft is just as guilty of pushing SharePoint into domains it doesn't belong.) If you use SharePoint for what it's designed for, it really does work. Thoughts?

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  • Real world pitfalls of introducing F# into a large codebase and engineering team

    - by nganju
    I'm CTO of a software firm with a large existing codebase (all C#) and a sizable engineering team. I can see how certain parts of the code would be far easier to write in F#, resulting in faster development time, fewer bugs, easier parallel implementations, etc., basically overall productivity gains for my team. However, I can also see several productivity pitfalls of introducing F#, namely: 1) Everyone has to learn F#, and it's not as trivial as switching from, say, Java to C#. Team members that have not learned F# will be unable to work on F# parts of the codebase. 2) The pool of hireable F# programmers, as of now (Dec 2010) is non-existent. Search various software engineer resume databases for "F#", way less than 1% of resumes contain the keyword. 3) Community support as of now (Dec 2010) is less available. You can google almost any problem in C# and find someone that has already dealt with it, not so with F#. Third party tool support (NUnit, Resharper etc) is also sketchy. I realize that this is a bit Catch-22, i.e. if people like me don't use F# then the community and tools will never materialize, etc. But, I've got a company to run, and I can be cutting edge but not bleeding edge. Any other pitfalls I'm not considering? Or anyone care to rebut the pitfalls I've mentioned? I think this is an important discussion and would love to hear your counter-arguments in this public forum that may do a lot to increase F# adoption by industry. Thanks.

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  • Plugged in Not Charging.

    - by Eric Johnson
    Suggested steps to fix the nasty Windows power management issue of plugged in not charging. Option 1: Disconnect AC Shutdown Remove battery Connect AC Startup Under the Batteries category, right-click all of the Microsoft ACPI Compliant Control Method Battery listings, and select Uninstall (it’s ok if you only have 1). Shutdown Disconnect AC Insert battery Connect AC Startup Option 2: Turn off laptop. Unplug AC power. Remove battery. Replace AC power. Turn on laptop, allow OS to boot. Once logged in to the machine, perform a normal shut down. Unplug AC power. Replace battery. Replace AC power. Turn on laptop, allow OS to boot. The battery should once again be charging as normal Additional troubleshooting techniques: Check battery charging status in the BIOS Update BIOS Replace Battery (I did this and the new battery is not charging) See if the battery charging light works when the laptop is powered down. Supporting Links: http://jeffreypalermo.com/blog/plugged-in-not-charging-windows-7-solution/ http://social.technet.microsoft.com/Forums/en/itprovistahardware/thread/741398c6-a733-482c-a33c-2b61d9bc2984 http://www.youtube.com/watch?v=6Xf-ipP0wSY&feature=fvw

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  • Technical Questions for Java Experts

    - by Tori Wieldt
    The "Oracle Technology Network" (meaning me) will be at Devoxx next week doing interviews with Java experts. Do you have technical questions about Project Jigsaw, JavaFX or Java on MacOS? Take a look at the list below of experts and topics. Leave your questions as a comment on this blog and I'll do my best to include them. Most of the interviews happen Tuesday, so get you questions in quickly. Thanks! Interviewee InterviewTopic Arun Gupta and Alexis Moussine-Pouchkine Java EE Mark Reinhold OpenJDK Mark Reinhold Project Jigsaw Jasper Potts JavaFX Scott Kovatch Java on Mac OS Brian Goetz & Mark Reinhold JDK 8 Brian Goetz Project Lambda Steven Chin JavaFX Marek Potociar JAX-RS Claude Falguiere Dev for Tablets Alan Bateman NIO2 Regina ten Bruggencate JDuchess Martijn Verburg Adopt a JSR Note: This is different than the call for questions for the Fireside chat on Tuesday afternoon, Devoxx conference keynote speakers (Henrik Ståhl, senior director of product management for the Java platform at Oracle, and Cameron Purdy, VP of development for the Java EE platform) and the technical discussion panel on Friday morning. Leave (and vote on) those questions here. 

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  • Wifi not working on Acer Aspire One D270

    - by Dani
    brand new baby linux user here, never used Ubuntu or any other linux OS before, so be gentle and use short words! I installed Ubuntu 12.04 on my new Acer Aspire One D270-F61C/KF netbook (it's a Japanese computer which had Japanese windows preinstalled, and I decided to take the plunge and try Ubuntu because English Windows costs the earth and stars). Wifi isn't working; I enter my wireless password, it tries to connect for a while, then asks for my password again. And KEEPS ASKING, every few minutes. Wired connection works fine. Wireless card is a Broadcom BCM4313; I have the "additional drivers" checked and installed (I tried unchecking and then reinstalling them in case that would help, no joy, and now my home wifi connection isn't showing up in the list of available connections, argh). I've done a lot of googling and I gather there's a lot of issues with Broadcom cards, but some of the answers are for earlier ubuntu builds and many of them are a bit confusing for a new user. I gather I need to try installing some new drivers other than the proprietary ones provided, but I'm having trouble figuring out how that's done. Anyone got some simple, step by step instructions for me? Please bear in mind, TOTAL N00B. (EDIT): OKAY, got it fixed finally; after suggestions on the Ubuntu forums and messing around with drivers, what finally worked was installing Wicd. Not... using Wicd, for some reason, just installing it fixed it. ...I CHOOSE NOT TO QUESTION IT.

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  • Apt-get saying "Unable to correct problems, you have held broken packages."

    - by YatharthROCK
    TL;DR: sudo apt-get install ... saying "Unable to correct problems, you have held broken packages." The problem I was trying to get the WebApps feature for PP and QQ following this blog post. I ran the sudo add-apt-repository ppa:webapps/preview command to add the repository, but i got a connection error. Since I know my current ISP gives a shaky connection, I tried again and sure enough, it worked. Then I ran sudo apt-get install unity-webapps-preview, but I realized we had to update apt-get first, so I hit Ctrl + C to stop it. Then I ran sudo apt-get update which worked w/o a fuss, but when I ran sudo apt-get install unity-webapps-preview again later, it showed an error message. Here's the dump: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: unity-webapps-preview : Depends: xul-ext-unity but it is not going to be installed Depends: xul-ext-websites-integration but it is not going to be installed Depends: xul-ext-webaccounts but it is not going to be installed E: Unable to correct problems, you have held broken packages. I think this might be because of me interrupting the earlier command. It hadn't got a chance to output anything, though — I stopped it pretty fast. What I tried I have tried running a number of commands:- sudo apt-get install --fix-broken sudo apt-get autoclean sudo apt-get autoremove sudo apt-get -f install sudoapt-get install ppa-purgeandsudo ppa-purge ppa:webapps/preview` Even after running sudo apt-get upgrade after every try, none of them worked. Research I tried searching Google, looking at a couple of forums and searching on AU, but to no avail. Help would be appreciated.

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  • Looking for 2D Cross platform suggestions based on requirements specified

    - by MannyG
    I am an intermediate developer with minor experience on enterprise mobile applications for iphone, android and blackberry looking to build my first ever mobile game. I did a google search for some game dev forums and this popped up so I thought I would try posting here as I lack luck elsewhere. If you have ever heard of the game for the iphone and android platform entitled avatar fight then you will have an idea of the graphic capabilities I require. Basically the battles which are automated one sprite attacking another doing cool animations but all in 2d. My buddy and I have two motivations, one is to jump into mobile Dev as my experience is limited as is his so we would like some trending knowledge (html5 would be nice to learn) . The other is to make some money on the side, don't expect much but polishing the game and putting our all will hopefully reward us a bit. We have looked into corona engine, however a lot of people are saying it is limited in the graphics department, we are open to learning new languages like lua, c++, python etc. Others we have looked at include phonegap, rhomobile, unity, and the list goes on. I really have no idea what the pros and cons of these are but for a basic battle sequence and some mini games we want to chose the right one. Some more things that we will be doing include things like card games, side scrolling flying object based games, maybe fishing stuff. We want to start small with these minigames and work our way up to the idea we would like to implement in the future. We only want to work in 2D. So with these requirements please help me chose a platform to work on (cross platform is what we are ideally leaning towards). Please feel free to throw in some pieces of advice you may have for newbie game developers like myself too. Thank you for reading!

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  • Best arguments for/against introducing ORM technology into a companies dev process

    - by james
    I have started using ORM technology in the last few years. My first exposure was NHibernate. I then moved onto Linq 2 Sql, and Entity Framework. The issue I have however is, there are some organisations where I have found strong opposition to introducing ORM tools. They usually have a number of reasons: they have a lot of built up SQL skills in the team, and are worried about the underlying SQL that ORM's generate. they have DBA's who like to be able to see the SQL an app uses in order that can review it for best practice. they are worried about performance (some people have "heard" the ORM's aren't as performant but have no real proof themselves - there may well be some truth in this! :). So, I'm looking for the best or most convincing arguments that you have put forward FOR the use of ORM tools. Equally, I would be interested in the against arguments too. Note: this is NOT a discussion over which ORM I should use.

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  • Exploring various SharePoint blogs

    Quick summary on the activities I did yesterday - aka Day 4. Actually, it wasn't too much but I went through a number of articles on various blogs and online forums. Just for general purpose and to see whether my collection is going to have more entries. Well, so far I have to admit that the resources are good. Unfortunately, the blog of Doerfler is a little bit scarce. I went through it completely and there wasn't too much interesting information (yet) but this particular entry is worth mentioning: Wiederherstellen einer gelöschten Websitesammlung (How to restore a deleted site collection) Taking into consideration that there haven't been any new entries since November 2012 I would say that the blog is dormant. It would be great to have new entries in the future... My first (baby) steps in the following SharePoint communities are only scratching the surface, and I'm really looking forward to dig deeper. There seems to be a lot of valuable information available: SharePoint Community SharePointCommunity I think that I already found a true gem over there which is going to give me some extra time: How to begin learning SharePoint (for beginners) - Great overview and link collection Mark Jones. Interestingly, I already discovered a couple of his entries, like the video tutorials by Andrew Connell.

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  • chrome memory and cpu footprint

    - by nmizar
    I've searched the forums for an answer but I couldn't find quite the answer I was looking for [1] , so I thought I it could as well be of interest to more people around here. I carry out a big part of my job on the browser (or for the browser, if you want to put it that way). I tend to use Chrome, because it's got natively many of the newest features that I need (DevTools stuff, mainly but not only). BTW, I'm usually running the last available Chrome version/build on a desktop Vaio with 4GB RAM and dual core CPU and Ubuntu 12.04 as distro and Gnome as window manager. So, I was curious about a) why does Chrome spawn so many threads even opening only three of four tabs and b) is there any way to allocate more memory to Chrome to prevent its performance from degrading? Thanks in advance, Nacho PS [1] I found threads about Chrome freezing or running out of memory but not about the reasons for this being so or for avoiding it to happen. PPS Of course, I could always buy a newer and more capable machine and that is exactly what I'm trying to evaluate: is this a question of outdated hardware or the problem will keep appearing on any (decently but not hugely sized) machine?

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  • SQL SERVER – Get Schema Name from Object ID using OBJECT_SCHEMA_NAME

    - by pinaldave
    Sometime a simple solution have even simpler solutions but we often do not practice it as we do not see value in it or find it useful. Well, today’s blog post is also about something which I have seen not practiced much in codes. We are so much comfortable with alternative usage that we do not feel like switching how we query the data. I was going over forums and I noticed that at one place user has used following code to get Schema Name from ObjectID. USE AdventureWorks2012 GO SELECT s.name AS SchemaName, t.name AS TableName, s.schema_id, t.OBJECT_ID FROM sys.Tables t INNER JOIN sys.schemas s ON s.schema_id = t.schema_id WHERE t.name = OBJECT_NAME(46623209) GO Before I continue let me say I do not see anything wrong with this script. It is just fine and one of the way to get SchemaName from Object ID. However, I have been using function OBJECT_SCHEMA_NAME to get the schema name. If I have to write the same code from the beginning I would have written the same code as following. SELECT OBJECT_SCHEMA_NAME(46623209) AS SchemaName, t.name AS TableName, t.schema_id, t.OBJECT_ID FROM sys.tables t WHERE t.name = OBJECT_NAME(46623209) GO Now, both of the above code give you exact same result. If you remove the WHERE condition it will give you information of all the tables of the database. Now the question is which one is better – honestly – it is not about one is better than other. Use the one which you prefer to use. I prefer to use second one as it requires less typing. Let me ask you the same question to you – which method to get schema name do yo use? and Why? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL System Table, SQL Tips and Tricks, T SQL, Technology

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  • Can you say "Architect?"

    - by Bob Rhubart
    Photo by Jennifer Ortiz In his article, It's Time To Occupy IT, AIIM CEO and president John Mancini examines the evolution of "Systems of Engagement," the social technologies that are transforming how customers and employees relate to and interact with companies. Surviving the disruption that transformation entails is a matter of when, rather than if, a given organization embraces the change. But as Mancini points out, that transformation will require a "new breed" of IT professional: "While addressing this kind of challenge requires technical skills, it also requires process and customer acumen more often found in the business than in our IT departments. It requires a new type of information professional, whose expertise includes technical and domain knowledge, but who also has an idea of how the pieces of a process that spans the worlds of Systems of Record and Systems of Engagement should fit together. Gartner estimates that the demand for this new breed of information professional will grow by 50 percent by 2015." Though Mancini makes no reference to the title, the skills he desribes are those of the IT architect. While the specific definition of the role remains fodder for seemingly endless discussion and debate on various social networks and forums, the fact remains that the skills required for success in the evolving world of IT will increasingly involve a deep understanding of how all the pieces fit together.

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  • What is your most preferred method of site pagination?

    - by John Smith
    There seem to be quite a few implementations of this feature. Some sites like like Stackexchange have it laid out like this: [1][2][3][4][5] ... [954][Next] Other sites like game forums may have something like this: [1][2][3] ... [10] ... [50] ... [500] ... [954][Next] Some sites like webcomics (XKCD comes to mind) have it laid out like this: [Last][Prev][Random][Next][First] Reddit has a very simple pagination with only: [Prev][Next] Sites like Stackexchange and Google also allow you to change how many results you want per page. Personally, I have never used this feature. Is it even worth including or does it just further confuse the design with needless features? Personally, I have only ever seen the need for the webcomic style (without the random). If I need to go to a specific page (which is very, very rare) then I can just edit the address bar. Is it good design to make something more complex for rare occasions where it might make save the user some time? Is having to edit the address bar to navigate the site effectively in some circumstances bad design?

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  • ArchBeat Link-o-Rama for 10-17-2012

    - by Bob Rhubart
    This is your brain on IT architecture. Oracle Technology Network Architect Day in Los Angeles, Oct 2 Stuff your cranium with architecture by attending Oracle Technology Network Architect Day in Los Angeles, October 25, 2012, at the Sofitel Los Angeles, 8555 Beverly Boulevard, Los Angeles, CA 90048. Technical sessions, panel Q&A, and peer roundtables—plus a free lunch. Register now. Panel: On the Impact of Software | InfoQ Les Hatton (Oakwood Computing Associates), Clive King (Oracle), Paul Good (Shell), Mike Andrews (Microsoft) and Michiel van Genuchten (moderator) discuss the impact of software engineering on our lives in this panel discussion recorded at the Computer Society Software Experts Summit 2012. OTN APAC Tour 2012: Bangkok, Thailand - Oct 22, 2012 Mike Dietrich shares information on the upcoming OTN APAC Tour stop in Bangkok. Registration is open. Consolidating Oracle E-Business Suite R12 on Oracle's SPARC SuperCluster | Giri Mandalika Giri Mandalika shares an overview of a new Optimized Solution for Oracle E-Business Suite (EBS) R12 12.1.3.. As Giri explains, "This solution was centered around the engineered system, SPARC SuperCluster T4-4." The Oldest Big Data Problem: Parsing Human Language | The Data Warehouse Insider Dan McClary offers up a new whitepaper "which details the use of Digital Reasoning Systems' Synthesys software on Oracle Big Data Appliance." Mobile Apps for EBS | Capgemini Oracle Blog Capgemini solution architect Satish Iyer breifly describes how Oracle ADF and Oracle SOA Suite can be used to fill the gap in mobile applications for Oracle EBS. Ease the Chaos with Automated Patching: Enterprise Manager Cloud Control 12c | Porus Homi Havewala This new OTN article is excerpted from Porus Homi Havewala's latest book, Oracle Enteprise Manager Cloud Control 12c: Managing Data Center Chaos (2012, Packt Publishing). Thought for the Day "Never make a technical decision based upon the politics of the situation, and never make a political decision based upon technical issues." — Geoffrey James Source: softwarequotes.com

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  • Duplication of code (backend and javascript - knockout)

    - by Michal B.
    We have a new developer in our team. He seems a smart guy (he just came in so I cannot really judge). He started with implementing some small enhancements in the project (MVC3 web application using javascript - jquery and knockout). Let's say we have two values: A - quite complex calculation C - constant B = A + C On the screen there is value B and user can change it (normal texbox). When B changes, A changes as well because C is constant. So there is linear dependency between A and B. Now, all the calculations are done in the backend, but we need to recalculate A as user changes B (in js, I would use knockout). I thought about storing old A and B and when B changes by 10 then we know that new A will be old A + 10. He says this is dirty, because it's duplication of code (we make use of the fact that they are dependent and according to him that should be only in one place in our app). I understand it's not ideal, but making AJAX request after every key press seems a bit too much. It's a really small thing and I would not post if we haven't had long discussion about it. How do you deal with such problems? Also I can imagine that using knockout implies lots of calculations on the client side, which very often leads to duplication of the same calculations from the backend. Does anyone have links to some articles/thoughts on this topic?

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  • Best of OTN - Week of May 25th

    - by CassandraClark-OTN
    Architect Community Podcast: Going Mobile - Developing Enterprise Mobile Apps This four-part OTN ArchBeat Podcast series is devoted to a discussion about bringing mobility to the enterprise, and how architects and developers can take advantage of the opportunities in the evolution of mobile application development. Video: Data Modeling and Moving Meditation with Kent Graziano Want to learn more about Kent's Kscope 2014 data modeling sessions and how Chi Gung can help you get a great start on your day? Check out this video interview. Video: Oracle ACE Director Stewart Bryson on OBIEE, ODI, GoldenGate In this interview Stewart talks about how OBIEE, ODI, GoldenGate and other technologies fit into his Kscope 2014 sessions, and about the sessions he plans to attend. Friday Funny from OTN Architect Community Manager Bob Rhubart:Even if you're not a person of a certain age, you need read A journey into my colon -- and yours, humorist Dave Barry's wildly funny 2008 account of his colonoscopy. Because one day you will be a person of certain age... Get involved in community conversations on the following OTN channels... OTN TechBlog The Java Source Blog The OTN Garage Blog The OTN ArchBeat Blog @oracleotn @java @OTN_Garage @OTNArchBeat @OracleDBDev OTN I Love Java OTN Garage OTN ArchBeat Oracle DB Dev OTN Java OTN ArchBeat

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  • Where&rsquo;s my start button?

    - by Dennis Vroegop
    I have to be honest here for a moment. The one thing people most complain about when they talk about Windows 8 is that they miss the Start Button. You know, that dreaded thing that everybody hated when it was introduced… I usually don’t go into these kinds of discussions unless I am personally involved but this one I cannot let go. Why are people doing this? Windows 8 is a great OS. They have changed, updated and perfected so many things so there is enough to talk or write about. Yet, all articles or discussions come down to “Where’s my start button?” In order to save myself from having to explain this every single time I wrote this post and from now on I will simply refer to this blog when I get asked that question. Here it is. Your start menu is there. It’s right in front of your nose. It’s two dimensional, it’s got huge buttons (although they are more than just buttons, they’re alive and therefore called Live Tiles). Just go through those tiles and click what ever you want to start up. Don’t want to look for an item? Just start typing. Really it is that simple. When you are on the start screen just start typing (part of) the name of the program you want and you’ll find it.  As you see in the attached example I started typing “word” and it found Word, Wordfeud, Wordament etc. If you want to find something else besides a program (say you want to change the region you’re in) just click on Settings (it will already show you how many hits there are in that section). People, my request is: dive into something before you complain about it. Look around. This feature is so much easier to use than the old stuff. But you have to know about it. So. I won’t get into this discussion anymore.

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  • How to connect Ethernet on Ubuntu (with auto-detection)

    - by user12285
    It's been well over six months but I have the same router SmartAX MT880d with Ethernet, and the exact same problem : no internet, even though I can successfully reach the modem settings page by entering 192.168.1.1 in Firefox. I'm a total beginner with Ubuntu. My internet works great in Windows but does not work in Ubuntu. Sorry if I don't use the right (technical) terminology to explain my issue. English is not my mother tongue. For 2 weeks, I've been doing reading on the web and forums and the ubuntuguide.org to name a few, but to no avail. Now I see no other solution but to ask for help. My problem is that I can't find a way to put the right digits in the right place because I don't know what numbers I need to put in what files. E.g.: do I need to use DHCP? or a static IP address? No clue whatsoever. I'm concerned that I might put figures in the wrong spaces. For example, is the modem/router's IP exactly 192.168.1.1 for Huawei Smart AXMT880d modem? Is the subnet 255.255.255.0? Gateway 192.168.1.1? I'm confused as I can also see a different IP starting with 155131*** (is it an account number?) on my contract with Huawei (a Chinese ISP). Apart from calling 911, what other numbers do I need to put in and where? How do I check that all the numbers have been entered correctly in every appropriate space before trying to connect the Internet?

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  • Discuss: PLs are characterised by which (iso)morphisms are implemented

    - by Yttrill
    I am interested to hear discussion of the proposition summarised in the title. As we know programming language constructions admit a vast number of isomorphisms. In some languages in some places in the translation process some of these isomorphisms are implemented, whilst others require code to be written to implement them. For example, in my language Felix, the isomorphism between a type T and a tuple of one element of type T is implemented, meaning the two types are indistinguishable (identical). Similarly, a tuple of N values of the same type is not merely isomorphic to an array, it is an array: the isomorphism is implemented by the compiler. Many other isomorphisms are not implemented for example there is an isomorphism expressed by the following client code: match v with | ((?x,?y),?z = x,(y,z) // Felix match v with | (x,y), - x,(y,z) (* Ocaml *) As another example, a type constructor C of int in Felix may be used directly as a function, whilst in Ocaml you must write a wrapper: let c x = C x Another isomorphism Felix implements is the elimination of unit values, including those in tuples: Felix can do this because (most) polymorphic values are monomorphised which can be done because it is a whole program analyser, Ocaml, for example, cannot do this easily because it supports separate compilation. For the same reason Felix performs type-class dispatch at compile time whilst Haskell passes around dictionaries. There are some quite surprising issues here. For example an array is just a tuple, and tuples can be indexed at run time using a match and returning a value of a corresponding sum type. Indeed, to be correct the index used is in fact a case of unit sum with N summands, rather than an integer. Yet, in a real implementation, if the tuple is an array the index is replaced by an integer with a range check, and the result type is replaced by the common argument type of all the constructors: two isomorphisms are involved here, but they're implemented partly in the compiler translation and partly at run time.

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  • Alternate method to dependent, nested if statements to check multiple states

    - by octopusgrabbus
    Is there an easier way to process multiple true/false states than using nested if statements? I think there is, and it would be to create a sequence of states, and then use a function like when to determine if all states were true, and drop out if not. I am asking the question to make sure there is not a preferred Clojure way to do this. Here is the background of my problem: I have an application that depends on quite a few input files. The application depends on .csv data reports; column headers for each report (.csv files also), so each sequence in the sequence of sequences can be zipped together with its columns for the purposes of creating a smaller sequence; and column files for output data. I use the following functions to find out if a file is present: (defn kind [filename] (let [f (File. filename)] (cond (.isFile f) "file" (.isDirectory f) "directory" (.exists f) "other" :else "(cannot be found)" ))) (defn look-for [filename expected-type] (let [find-status (kind-stat filename expected-type)] find-status)) And here are the first few lines of a multiple if which looks ugly and is hard to maintain: (defn extract-re-values "Plain old-fashioned sub-routine to process real-estate values / 3rd Q re bills extract." [opts] (if (= (utl/look-for (:ifm1 opts) "f") 0) ; got re columns? (if (= (utl/look-for (:ifn1 opts) "f") 0) ; got re data? (if (= (utl/look-for (:ifm3 opts) "f") 0) ; got re values output columns? (if (= (utl/look-for (:ifm4 opts) "f") 0) ; got re_mixed_use_ratio columns? (let [re-in-col-nams (first (utl/fetch-csv-data (:ifm1 opts))) re-in-data (utl/fetch-csv-data (:ifn1 opts)) re-val-cols-out (first (utl/fetch-csv-data (:ifm3 opts))) mu-val-cols-out (first (utl/fetch-csv-data (:ifm4 opts))) chk-results (utl/chk-seq-len re-in-col-nams (first re-in-data) re-rec-count)] I am not looking for a discussion of the best way, but what is in Clojure that facilitates solving a problem like this.

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  • Vertex fog producing black artifacts

    - by Nick
    I originally posted this question on the XNA forums but got no replies, so maybe someone here can help: I am rendering a textured model using the XNA BasicEffect. When I enable fog, the model outline is still visible as many small black dots when it should be "in the fog". Why is this happening? Here's what it looks like for me -- http://tinypic.com/r/fnh440/6 Here is a minimal example showing my problem: (the ship model that this example uses is from the chase camera sample on this site -- http://xbox.create.msdn.com/en-US/education/catalog/sample/chasecamera -- in case anyone wants to try it out ;)) public class Game1 : Microsoft.Xna.Framework.Game { GraphicsDeviceManager graphics; SpriteBatch spriteBatch; Model model; public Game1() { graphics = new GraphicsDeviceManager(this); Content.RootDirectory = "Content"; } protected override void LoadContent() { // Create a new SpriteBatch, which can be used to draw textures. spriteBatch = new SpriteBatch(GraphicsDevice); // TODO: use this.Content to load your game content here model = Content.Load<Model>("ship"); foreach (ModelMesh mesh in model.Meshes) { foreach (BasicEffect be in mesh.Effects) { be.EnableDefaultLighting(); be.FogEnabled = true; be.FogColor = Color.CornflowerBlue.ToVector3(); be.FogStart = 10; be.FogEnd = 30; } } } protected override void Draw(GameTime gameTime) { GraphicsDevice.Clear(Color.CornflowerBlue); // TODO: Add your drawing code here model.Draw(Matrix.Identity * Matrix.CreateScale(0.01f) * Matrix.CreateRotationY(3 * MathHelper.PiOver4), Matrix.CreateLookAt(new Vector3(0, 0, 30), Vector3.Zero, Vector3.Up), Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, 16f/9f, 1, 100)); base.Draw(gameTime); } }

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  • What's so bad about pointers in C++?

    - by Martin Beckett
    To continue the discussion in Why are pointers not recommended when coding with C++ Suppose you have a class that encapsulates objects which need some initialisation to be valid - like a network socket. // Blah manages some data and transmits it over a socket class socket; // forward declaration, so nice weak linkage. class blah { ... stuff TcpSocket *socket; } ~blah { // TcpSocket dtor handles disconnect delete socket; // or better, wrap it in a smart pointer } The ctor ensures that socket is marked NULL, then later in the code when I have the information to initialise the object. // initialising blah if ( !socket ) { // I know socket hasn't been created/connected // create it in a known initialised state and handle any errors // RAII is a good thing ! socket = new TcpSocket(ip,port); } // and when i actually need to use it if (socket) { // if socket exists then it must be connected and valid } This seems better than having the socket on the stack, having it created in some 'pending' state at program start and then having to continually check some isOK() or isConnected() function before every use. Additionally if TcpSocket ctor throws an exception it's a lot easier to handle at the point a Tcp connection is made rather than at program start. Obviously the socket is just an example, but I'm having a hard time thinking of when an encapsulated object with any sort of internal state shouldn't be created and initialised with new.

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  • CodePlex Daily Summary for Wednesday, June 27, 2012

    CodePlex Daily Summary for Wednesday, June 27, 2012Popular ReleasesEasySL: RapidSL V2: Rewrite RapidSL UI Framework, Using Silverlight 5.0 EF4.1 Code First Ria Service SP2 + Lastest Silverlight Toolkit.Windows Workflow Foundation on Codeplex: Microsoft.Activities.UnitTesting v2.0.6: Microsoft.Activities.UnitTestingMicrosoft.Activities.UnitTesting is a unit testing framework designed to make it easier to unit test activities and workflow services built with Windows Workflow Foundation (WF4). The Framework contains Test Hosts which wrap WorkflowInvoker, WorkflowApplication and WorkflowServiceHost Assert helper classes for asserting out arguments and tracking records Support for Xaml Injection which allows you to mock or stub activities that you don't want to run when tes...Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.56: Fix for Issue #18280: assignment to undefined global in strict mode causes null-reference exception. Fix for Issue #18279: control characters within CSS strings must be escaped. Discussion #360291: add optional MSBuild task ability to combine JS files for minification, in addition to minifying each one separately. Expand -braces switch to also add option "source," which looks to the source for whether an opening block brace should be on a new line or on the same line. Minor code tweak...SOLID by example: All examples: All solid examplesSiteMap Editor for Microsoft Dynamics CRM 2011: SiteMap Editor (1.1.1726.406): Use of new version of connection controls for a full support of OSDP authentication mechanism for CRM Online.StreamInsight Samples: StreamInsight Product Team Samples V2.1: These samples correspond to the new StreamInsight APIs introduced with V2.1.Umbraco CMS: Umbraco CMS 5.2: Development on Umbraco v5 discontinued After much discussion and consultation with leaders from the Umbraco community it was decided that work on the v5 branch would be discontinued with efforts being refocused on the stable and feature rich v4 branch. For full details as to why this decision was made please watch the CodeGarden 12 Keynote. What about all that hard work?!?? We are not binning everything and it does not mean that all work done on 5 is lost! we are taking all of the best and m...IIS Express Manager: IIS Express 0.31 B: V0.1B - 04 May, 2012 Initiated Project. V0.2B - 05May, 2012 1. Fixed small bug. Threw error when stop button was pressed in an already stopped application. 2. Removed start and stop button. Double clicking on list items will now stop / start the websites. 3. Improved code readability. 4. Changed Orientation of Buttons in UI. V0.3B - 06May, 2012 1. Complete modification of IISEM and process ID handling 2. IISEM is now capable of reflecting the existing IISExpress processes right from startup...CodeGenerate: CodeGenerate Alpha: The Project can auto generate C# code. Include BLL Layer、Domain Layer、IDAL Layer、DAL Layer. Support SqlServer And Oracle This is a alpha program,but which can run and generate code. Generate database table info into MS WordXDA ROM HUB: XDA ROM HUB v0.9: Kernel listing added -- Thanks to iONEx Added scripts installer button. Added "Nandroid On The Go" -- Perform a Nandroid backup without a PC! Added official Android app!ExtAspNet: ExtAspNet v3.1.8.2: +2012-06-24 v3.1.8 +????Grid???????(???????ExpandUnusedSpace????????)(??)。 -????MinColumnWidth(??????)。 -????AutoExpandColumn,???????????????(ColumnID)(?????ForceFitFirstTime??ForceFitAllTime,??????)。 -????AutoExpandColumnMax?AutoExpandColumnMin。 -????ForceFitFirstTime,????????????,??????????(????????????)。 -????ForceFitAllTime,????????????,??????????(??????????????????)。 -????VerticalScrollWidth,????????(??????????,0?????????????)。 -????grid/grid_forcefit.aspx。 -???????????En...AJAX Control Toolkit: June 2012 Release: AJAX Control Toolkit Release Notes - June 2012 Release Version 60623June 2012 release of the AJAX Control Toolkit. AJAX Control Toolkit .NET 4 – AJAX Control Toolkit for .NET 4 and sample site (Recommended). AJAX Control Toolkit .NET 3.5 – AJAX Control Toolkit for .NET 3.5 and sample site (Recommended). Notes: - The current version of the AJAX Control Toolkit is not compatible with ASP.NET 2.0. The latest version that is compatible with ASP.NET 2.0 can be found here: 11121. - Pages using ...WPF Application Framework (WAF): WPF Application Framework (WAF) 2.5.0.5: Version: 2.5.0.5 (Milestone 5): This release contains the source code of the WPF Application Framework (WAF) and the sample applications. Requirements .NET Framework 4.0 (The package contains a solution file for Visual Studio 2010) The unit test projects require Visual Studio 2010 Professional Changelog Legend: [B] Breaking change; [O] Marked member as obsolete WAF: Add IsInDesignMode property to the WafConfiguration class. WAF: Introduce the IModuleController interface. WAF: Add ...Windows 8 Metro RSS Reader: Metro RSS Reader.v7: Updated for Windows 8 Release Preview Changed background and foreground colors Used VariableSizeGrid layout to wrap blog posts with images Sort items with Images first, text-only last Enabled Caching to improve navigation between framesConfuser: Confuser 1.9: Change log: * Stable output (i.e. given the same seed & input assemblies, you'll get the same output assemblies) + Generate debug symbols, now it is possible to debug the output under a debugger! (Of course without enabling anti debug) + Generating obfuscation database, most of the obfuscation data in stored in it. + Two tools utilizing the obfuscation database (Database viewer & Stack trace decoder) * Change the protection scheme -----Please read Bug Report before you report a bug-----...XDesigner.Development: First release: First releaseBlackJumboDog: Ver5.6.5: 2012.06.22 Ver5.6.5  (1) FTP??????? EPSV ?? EPRT ???????MVVM Light Toolkit: V4RTM (binaries only) including Windows 8 RP: This package contains all the latest DLLs for MVVM Light V4 RTM. It includes the DLLs for Windows 8 Release Preview. An updated Nuget package is also available at http://nuget.org/packages/MvvmLightLibs An installer with binaries, snippets and templates will follow ASAP.Weapsy - ASP.NET MVC CMS: 1.0.0: - Some changes to Layout and CSS - Changed version number to 1.0.0.0 - Solved Cache and Session items handler error in IIS 7 - Created the Modules, Plugins and Widgets Areas - Replaced CKEditor with TinyMCE - Created the System Info page - Minor changesAcDown????? - AcDown Downloader Framework: AcDown????? v3.11.7: ?? ●AcDown??????????、??、??????。????,????,?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????,??????、????????????????。 ● AcDown??????????????????,????????????????????????????。 ● AcDown???????C#??,????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ??:????????Windows XP???,?????????.NET Framework 2.0???(x86),?????"?????????"??? ??????????????,??????????: ??"AcDown?????"????????? ...New Projects2SexyContent for DotNetNuke - Installer: Helps install 2SexyContent in DotNetNuke, by reviewing requirements and then installing everything automatically. Assignment Solution Source: Project of studentsCode Markers Sample: A project that shows an example code markers implementation. Code Markers are used to synchronize automation as well as measure performanceFull Day Strategy Plugin 2: The source code is open source but the know how it's not. FunBox: A small project which is developing in C# and MVC2.game.sys: game.sys. proyecto softHyperStat.NET: HyperStat is the minimalist's static website compiler, designed with simplicity and usability in mind. Written in C#.NET for Windows, OSX and Linux.MyLogger: A simple and efficient logger for WP debuggingoAvans: The oAvans project is a initiative to provide a C# library for authenticating and communicating with the Avans publicAPI through the oAuth protocol.Oiler Game: A Windows Phone SL/XNA game in production by two UAF students as a learnign process.PixelSense Interaction: Shows how a Pixelsense unit can interact with some WP7 devicesPokémon Character Sheet Manager: Character sheet manager for Pokemon Tabletop AdventuresPower Manager PDD Sample for Windows Embedded Compact (CE): Windows Embedded Compact (CE) Power Manager PDD Sample.RenWuZhi: RenWuZhiSpell checker .Net: Based on GUN Aspell and implement with .Net. Can check the word misspelling.testgit062620121: hjTestProjectFan: testToolkit.Csv: Toolkit for parsing CSV into generic datatypes for simple data handling. Adheres to CSV specification for full compatibility. Implemented with FsLex and FsYacc.Universitary Tool: This project is being developed as pré requisite of university conclusion.WinGestionComercial: hola

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  • "Bootmgr is missing...." Upon reboot [closed]

    - by Gabe
    Possible Duplicate: Install/running ubuntu on extarnal HDD with a windows laptop? Ill take you through the steps I did. Sorry if this question has already been resolved, I'm new to Ubuntu and forums in general. I have 2 internal HDDs in my computer, both with Win7. One HDD is my mothers, the other is mine. I did this because she didn't want my games on her computer, and my PCs motherboard took a crap on me, so I set up a dual boot. I also have an external HDD. This is what I am trying to install Ubuntu 12.04 on. I formatted the drive by right clicking it, then selecting "Format". It is now in NTSF format. I downloaded the Windows installer, ran it, and selected "I:/" (my externl hdd) as the install location. The download and installation ran smoothly, and it gave me the reboot prompt. I selected "Reboot now" and my PC rebooted. I was then interrupted by the "Bootmgr is missing. Press CTRL + ALT + DEL TO REBOOT" message. NOTE: I would like to use my HDD for a FULL Ubuntu installation, not the Live (i think thats what its called). I want all my files and settings from Ubuntu saved to the External drive as if it was my only drive. If you need more information just ask. Any help would be appreciated. Thanks in advance.

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