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  • Ouya / Android : button mapping bitwise

    - by scorvi
    I am programming a game with the Gameplay3d Engine. But the Android site has no gamepad support and that is what I need to port my game to Ouya. So I implemented a simple gamepad support and it supports 2 gamepads. So my problem is that I put the button stats in a float array for every gamepad. But the Gameplay3d engine saves their stats in a unsigned int _buttons variable. It is set with bitwise operations and I have no clue how to translate my array to this.

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  • blurry lines between web application context layer, service layer and data access layer in spring

    - by thenaglecode
    I Originally asked this question in SO but on advice I have moved the question here... I'll admit I'm a spring newbie, but you can correct me if I'm wrong, this one liner looks kinda fishy in a best practices sort of way: @RepositoryRestResource(collectionResourceRel="people"...) public interface PersonRepository extends PagingAndSortingRepository<Person, Long> For those who are unaware, the following does many things: It is an interface definition that can be registered in an application context as a jpa repository, automagically hooking up all the default CRUD operations within a persistence context (that is externally configured). and also configures default controller/request-mapping/handler functionality at the namespace "/people" relative to your configured dispatcher servlet-mapping. Here's my point. I just crossed 3 conceptual layers with one line of code! this feels against my seperation-of-concern instincts but i wanted to hear your opinion. And for the sake of being on a question and answer site, I would like to know whether there is a better way of seperating these different layers - Service, Data, Controllers - whilst maintaining as minimal configuration as possible

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  • Increase the size of a memory mapped file

    - by sandun dhammika
    I am maintaning a memory mapped file to store my tree like datastructure. When I'm updating the datastructure ,I got this problem. The file is limited on it's size and can't be too long or too small. I have a methods like void mapfile_insert_record(RECORD* /* record*/); void mapfile_modify_record(RECORD* /* record*/); Both operations could lead to exceed the space which is free on memory file. How do I overcome this? What strategy I should use. calculate whether it requires to exceed the file as a pre-condition on both methods. Dynamically exceed it , for a example manage a timer and constantly polling file for it's free avaliable size and then automatically extend it. Any ideas or patterns to overcome this problem?

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  • Windows in StreamInsight: Hopping vs. Snapshot

    - by Roman Schindlauer
    Three weeks ago, we explained the basic concept of windows in StreamInsight: defining sets of events that serve as arguments for set-based operations, like aggregations. Today, we want to discuss the so-called Hopping Windows and compare them with Snapshot Windows. We will compare these two, because they can serve similar purposes with different behaviors; we will discuss the remaining window type, Count Windows, another time. Hopping (and its syntactic-sugar-sister Tumbling) windows are probably the most straightforward windowing concept in StreamInsight. A hopping window is defined by its length, and the offset from one window to the next. They are aligned with some absolute point on the timeline (which can also be given as a parameter to the window) and create sets of events. The diagram below shows an example of a hopping window with length of 1h and hop size (the offset) of 15 minutes, hence creating overlapping windows:   Two aspects in this diagram are important: Since this window is overlapping, an event can fall into more than one windows. If an (interval) event spans a window boundary, its lifetime will be clipped to the window, before it is passed to the set-based operation. That’s the default and currently only available window input policy. (This should only concern you if you are using a time-sensitive user-defined aggregate or operator.) The set-based operation will be applied to each of these sets, yielding a result. This result is: A single scalar value in case of built-in or user-defined aggregates. A subset of the input payloads, in case of the TopK operator. Arbitrary events, when using a user-defined operator. The timestamps of the result are almost always the ones of the windows. Only the user-defined  operator can create new events with timestamps. (However, even these event lifetimes are subject to the window’s output policy, which is currently always to clip to the window end.) Let’s assume we were calculating the sum over some payload field: var result = from window in source.HoppingWindow( TimeSpan.FromHours(1), TimeSpan.FromMinutes(15), HoppingWindowOutputPolicy.ClipToWindowEnd) select new { avg = window.Avg(e => e.Value) }; Now each window is reflected by one result event:   As you can see, the window definition defines the output frequency. No matter how many or few events we got from the input, this hopping window will produce one result every 15 minutes – except for those windows that do not contain any events at all, because StreamInsight window operations are empty-preserving (more about that another time). The “forced” output for every window can become a performance issue if you have a real-time query with many events in a wide group & apply – let me explain: imagine you have a lot of events that you group by and then aggregate within each group – classical streaming pattern. The hopping window produces a result in each group at exactly the same point in time for all groups, since the window boundaries are aligned with the timeline, not with the event timestamps. This means that the query output will become very bursty, delivering the results of all the groups at the same point in time. This becomes especially obvious if the events are long-lasting, spanning multiple windows each, so that the produced result events do not change their value very often. In such a case, a snapshot window can remedy. Snapshot windows are more difficult to explain than hopping windows: they represent those periods in time, when no event changes occur. In other words, if you mark all event start and and times on your timeline, then you are looking at all snapshot window boundaries:   If your events are never overlapping, the snapshot window will not make much sense. It is commonly used together with timestamp modification, which make it a very powerful tool. Or as Allan Mitchell expressed in in a recent tweet: “I used to look at SnapshotWindow() with disdain. Now she is my mistress, the one I turn to in times of trouble and need”. Let’s look at a simple example: I want to compute the average of some value in my events over the last minute. I don’t want this output be produced at fixed intervals, but at soon as it changes (that’s the true event-driven spirit!). The snapshot window will include all currently active event at each point in time, hence we need to extend our original events’ lifetimes into the future: Applying the Snapshot window on these events, it will appear to be “looking back into the past”: If you look at the result produced in this diagram, you can easily prove that, at each point in time, the current event value represents the average of all original input event within the last minute. Here is the LINQ representation of that query, applying the lifetime extension before the snapshot window: var result = from window in source .AlterEventDuration(e => TimeSpan.FromMinutes(1)) .SnapshotWindow(SnapshotWindowOutputPolicy.Clip) select new { avg = window.Avg(e => e.Value) }; With more complex modifications of the event lifetimes you can achieve many more query patterns. For instance “running totals” by keeping the event start times, but snapping their end times to some fixed time, like the end of the day. Each snapshot then “sees” all events that have happened in the respective time period so far. Regards, The StreamInsight Team

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  • Sometimes you have to brag on your employer

    - by Mickey Gousset
    A lot of you know me as an Application Lifecycle Management MVP, and a huge proponent of ALM, TFS, and Visual Studio.  For my day job, however, I work for Infront Consulting Group, a System Center consulting and training organization.  I love what I do there, and work closely with Operations Manager, Service Manager, and Orchestrator.  And believe it or not, use a lot of ALM best practices around all of those. Infront was just recognized as a 2012 Microsoft Corporate Account Virtualization Data Center Services Partner of the Year.  This award recognizes a solution partner that has demonstrated leadership and commitment in driving Microsoft virtualization solutions in the Microsoft Corporate Account segment.  I’m very proud of Infront, and all the hard work that everyone here has put into the incredible services we provide, which lead to us winning this award.

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  • Circular motion on low powered hardware

    - by Akroy
    I was thinking about platforms and enemies moving in circles in old 2D games, and I was wondering how that was done. I understand parametric equations, and it's trivial to use sin and cos to do it, but could an NES or SNES make real time trig calls? I admit heavy ignorance, but I thought those were expensive operations. Is there some clever way to calculate that motion more cheaply? I've been working on deriving an algorithm from trig sum identities that would only use precalculated trig, but that seems convoluted.

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  • What are the safety benefits of a type system?

    - by vandros526
    In Javascript: The Good Parts by Douglas Crockford, he mentions in his inheritance chapter, "The other benefit of classical inheritance is that it includes the specification of a system of types. This mostly frees the programmer from having to write explicit casting operations, which is a very good thing because when casting, the safety benefits of a type system are lost." So first of all, what actually is safety? protection against data corruption, or hackers, or system malfunctions, etc? What are the safety benefits of a type system? What makes a type system different that allows it to provide these safety benefits?

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  • Community Day at SOS Kinderdorf Bambous

    Easter is not only an occassion of public holidays but an opportunity to share and celebrate with your neighborhood. The team of IOS Indian Ocean Software Ltd. spent Easter Monday with the children and "mothers" of SOS Children's Village in Bambous. Together with the employees' family members we enjoyed some wonderful hours together. Starting the community day with a common lunch, IOS contributed mainly stationery, educational gifts and games like Scrabble or Sudoku. And of course, a little give-away with chocolate eggs... The kids are aged between 5 and 18 years. They live together with their village mothers in so-called family houses. The SOS Kinderdorf in Bambous is quite new and started their operations back in 2003, with an official inauguration in May 2005. Actually, I'm really happy about this event and I am looking forward to IOS next community activity. Community off-line and for real people, not only virtual!   PS: Article in L'Express of 09.04.2010

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  • find second smallest element in Fibonacci Heap

    - by Longeyes
    I need to describe an algorithm that finds the second smallest element in a Fibonacci-Heap using the Operations: Insert, ExtractMin, DecreaseKey and GetMin. The last one is an algorithm previously implemented to find and return the smallest element of the heap. I thought I'd start by extracting the minimum, which results in its children becoming roots. I could then use GetMin to find the second smallest element. But it seems to me that I'm overlooking other cases because I don't know when to use Insert and DecreaseKey, and the way the question is phrased seems to suggest I should need them.

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  • Do you know what is a DevOps Project?

    - by Gopinath
    Yesterday I wrote about OpenStack project, an open source cloud computing stack that lets you build Cloud Computing environments. While reading more on this topic I stumbled about a new type of projects called DevOps projects.  OpenStack is all set to become the first DevOps project, reports Forbes …the way OpenStack is applying the open source model to creating cloud infrastructure, the open source model is on the verge of being extended so that the collaboration and design process will include software, hardware, and networking in the data center as well as operational processes. In modern development, the idea of designing software, data center, and operations using one integrated team is called DevOps.

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  • Fastest bit-blit in C# ?

    - by AttackingHobo
    I know there is Unity, and XNA that both use C#, but I am don't know what else I could use. The reason I say C# is that the syntax and style is similar to AS3, which I am familiar with, and I want to choose the correct framework to start learning with. What should I use to be able to do the most possible bit-blit(direct pixel copy) objects per frame. EDIT: I should not need to add this, but I am looking for the most possible amount of objects per frame because I am making a few Bullet-Hell SHMUPS. I need thousands and thousands of bullets, particles, and hundreds of enemies on the screen at once. I am looking for a solution to do as many bit-blit operations per frame, I am not looking for a general purpose engine. EDIT2: I want bit-blitting because I do not want to exclude people who have lower end video cards but a fast processor from playing my games.

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  • Will dolphins die if I use REST "as CRUD"?

    - by l0l0l0l0l
    Recently I moved to Laravel and I was surprised on how good setting the controllers as RESTful is, it made routes and my code cleaner. I'm kinda new on web development and never used REST before since all my clients' projects are basically CRUD operations. There's any cool buzzword to this "approach" or I'm just stupid for doing it? I don't plan to follow any REST patterns, just to make my life easier and code cleaner. Basicallly just GET/POST, the other ones are not native anyway so (emulated on hidden form value).

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  • Adoption of Exadata - Gartner research note

    - by Javier Puerta
    Independent research note by Gartner acknowledges Oracle Exadata Database Machine has achieved significant early adoption and acceptance of its database appliance value proposition. Analyst Merv Adrian looks at some of the main issues that IT professionals have solved as they assess or deploy the Oracle Exadata solution, including: OLTP and DSS workload support workload consolidation increasing performance and scalability demands data compression improvements  Gartner reports clients using Oracle Exadata experienced the following: report significant performance improvements substantial amounts of cache memory which greatly improves processing speed Oracle Advanced Compression providing 2-4X data compression delivering significant reductions in storage requirements and driving shorter times for backup operations Tables compressed with Oracle Advanced Compression automatically recompress as data is added/updated. One client specifically reported consolidating more than 400 applications onto the Oracle Exadata platform Read the full Gartner note

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  • Webcast Series: Accelerate Business-Critical Database Deployments with Oracle Optimized Solutions

    - by ferhat
    Join us for this two-part Webcast series and learn how to safely consolidate business-critical databases and deliver quantifiable benefits to the business: Save up to 75% in operational and acquisition costs Save millions of dollars consolidating legacy infrastructure Leverage best practices from thousands of customer environments Increase end user productivity with 75% faster time to operations and 4x faster throughput   The Oracle Optimized Solution for Oracle Database  provides extensive guidelines for architecting and deploying complete database solutions that deliver superior performance and availability while minimizing cost and risk. Oracle’s world-class engineering teams work together to define these optimal architectures using Oracle's powerful SPARC M-Series and SPARC T-Series servers together with Oracle Solaris and Oracle's SAN, NAS, and flash-based storage to run the industry-leading Oracle Database. Quite simply, the Oracle Optimized Solution for Oracle Database makes it easier for you to deliver and manage business critical database environments that are fast, secure and cost-effective. Available On-Demand PART 1: Why Architecture Matters When Deploying Business-Critical Databases PART 2: How To Consolidate Databases Using Oracle Optimized Solutions   Presented by: Lawrence McIntosh, Principal Enterprise Architect, Oracle Optimized Solutions Ken Kutzer, Principal Product Manager, Infrastructure Solutions, Oracle  

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  • Other SCOM users at SQLSaturday #65 Vancouver?

    - by merrillaldrich
    After a little hair-graying fun around passport renewal and family logistics, it looks like I'll be at the Vancouver SQLSaturday ! I am pumped. (I was entirely convinced they would call it "SQLSaturd' eh?" and I'm frankly a little disappointed about the name... :-) I'm on the tail end of a three-month deployment of System Center Operations Manager with the SQL management pack - if you are a DBA and SCOM user, too, I'd love to meet you and talk shop at the SQLSaturday event. Please drop me a line...(read more)

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  • Asynchronous update design/interaction patterns

    - by Andy Waite
    These days many apps support asynchronous updates. For example, if you're looking at a list of widgets and you delete one of them then rather than wait for the roundtrip to the server, the app can hide the one you deleted, giving immediate feedback. The actual deletion on the server will happen in the background. This can be seen in web apps, desktop apps, iOS apps, etc. But what about when the background operation fails. How should you feed back to the user? Should you restore the UI to the pre-deletion state? What about when multiple background operations fail together? Does this behaviour/pattern have a name? Perhaps something based on the Command pattern?

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  • Access Control Management Tool ACM.exe

    - by kaleidoscope
    The Access Control Management Tool (Acm.exe) is a command-line tool you can use to perform management operations (CREATE, UPDATE, GET, GET ALL, and DELETE) on the AppFabric Access Control entities (scopes, issuers, token policies, and rules). Basic Syntax The command line for Acm.exe follows the basic pattern of verb-noun. For example: acm.exe <command> <resource> [-option:<option value>] This tool will automatically generate random keys, which helps ensure that they can't easily be guessed by an attacker. Note that ACM.EXE is a thin wrapper around a REST Web Service (the AC management service). That helps to remember the commands it accepts, which are the typical resource management commands for a REST service: · Get(All) · Create · Update · Delete ACM.EXE.config file can be used to configure Host, Service and the Management key for a Service Namespace. Geeta, G

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  • Sponsor sessions - why should you attend?

    - by Testas
    At the Manchester SQL Server User Group we have had a number of sponser sessions, likewise at SQLBits too You may think  that it would be an hour promoting the software that that a particular vendor has to offer. This is often not the case. many session spend  time focusing on the tools, native to SQL Server that can be used for performance tuning and finish off by providing an overview of vendors software and how it can make it easier to perform performance tuning operations on your SQL Server. Many of you will be attending SQLBits this April. Many of the sponsors will perform a lunchtime lecture surrounding many areas of SQL Server. Event sponsors play a very important role in supporting events such as SQLBits and some of the SQL Server User group events Based on the presentations I have seen, I would recommend attending one of the lunchtime sessions at SQLBits. I have no doubt you will pick up golden nuggets of information that will help you in your work. I know I have Chris

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  • Facebook est désormais valorisé à 50 milliards de dollars, et dépasse Yahoo, eBay et Time Warner

    Facebook est désormais valorisé à 50 milliards de dollars, et dépasse Yahoo, eBay et Time Warner La valeur de Facebook vient de faire un grand bond en avant, malgré que la firme ne soit toujours pas présente en bourse du fait des réticences de son fondateur. En effet, la banque d'affaires Goldman Sachs vient d'investir 450 millions de dollars dans le site communautaire de Mark Zuckerberg. Mais ce n'est pas tout, le conglomérat russe Digital Sky Technologies a aussi apporté sa pierre à l'édifice en y injectant 50 millions de dollars. Deux opérations financières qui permettent à Facebook d'être désormais valorisé à hauteur de... 50 milliards de dollars ! L'entreprise ne cesse de croître, tout en s'appr...

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  • It's Time to Chart Your Course with Oracle HCM Applications - Featuring Row Henson

    - by jay.richey
    Total human capital costs average nearly 70% of operating expenses. There's never been more pressure on HR professionals to deliver mission-critical programs to retain rising stars, develop core performers, and cut costs from workforce operations. Join Row Henson, Oracle HCM Fellow, and Scott Ewart, Senior Director of Product Marketing, to find out: What real-world strategies HR practitioners and experts are prioritizing today to optimize their investment in people Why nearly two-thirds of PeopleSoft and E-Business Suite HCM customers have chosen to upgrade to the latest releases and where Oracle's strategic product roadmaps are headed How Fusion HCM will introduce a new standard for work and innovation - not only for the HR professional, but for every single employee and manager in your business Date: January 20th, 2011 at 9:00 PST / 12:00 EST Register now!

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  • Implementing a bit shift using AND, NOT, ADD [closed]

    - by fdart17
    I'm implementing a 16-bit left bit shift by r bits, and I only have access to AND, NOT and ADD. There are 3 condition codes, negative, zero and positive, which are set when you use any of these operations. How I went about it was : (1) And the number with 1000 0000 0000 0000 to set condition codes to positive if the most significant bit is 1. (2) Add the number with itself. This shifts bits one to the left. (3) If the MSB was 1, add 1 to the result. (4) Loop threw (1)-(3) r times. I'm wondering if anyone has any hints to some more efficient methods? Thanks!

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  • Google I/O 2010 - Making smart & scalable Wave robots

    Google I/O 2010 - Making smart & scalable Wave robots Google I/O 2010 - Making smart & scalable Wave robots Wave 201 David Byttow, Marcel Prasetya A smart robot must be able to store persistent data. Wave robots can store data in wave structures, like wavelets, datadocs, and annotations, instead of traditional datastores. A scalable robot must perform operations with minimal bandwidth. Wave robots can optimize by selecting the appropriate amount of context, the optimal events, and narrow filters for events. In this talk, we'll share best practices on data storage and scaling. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 9 0 ratings Time: 58:25 More in Science & Technology

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  • Hello NHibernate! Quickstart with NHibernate (Part 1)

    - by BobPalmer
    When I first learned NHibernate, I could best describe the experience as less of a learning curve and more like a learning cliff.  A large part of that was the availability of tutorials.  In this first of a series of articles, I will be taking a crack at providing people new to NHibernate the information they need to quickly ramp up with NHibernate. For the first article, I've decided to address the gap of just giving folks enough code to get started.  No UI, no fluff - just enough to connect to a database and do some basic CRUD operations.  In future articles, I will discuss a repository pattern for NHibernate, parent-child relationships, and other more advanced topics. You can find the entire article via this Google Docs link: http://docs.google.com/Doc?docid=0AUP-rKyyUMKhZGczejdxeHZfOGMydHNqdGc0&hl=en Enjoy! -Bob

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  • Mount to /dev/sdb1 without password

    - by Jarmo
    I am unable to mount a USB drive (or SD card) to my system without root access. When I plug in a USB drive, it is visible in the left column of Nautilus, but when I click on it to open it, I receive the error message Unable to mount 2.1 GB Filesystem Error mounting: mount exited with exit code 1: helper failed with: mount: only root can mount /dev/sdb1 on /media/sdb1 I am able to mount the drive using sudo mount -w /dev/sdb1, but this causes problems for operations such as creating startup discs, which requires unmounting and remounting the drive. I suspect this problem may be caused by the fact that when I upgraded from 11.10 to 12.04, I had an SD card plugged in. This caused the system to stall during later startups, as it could not find this drive. I remedied this by editing a line of /etc/fstab to read /dev/sdb1 /media/sdb1 vfat noauto 0 0 However, I am dual booting Ubuntu with Windows XP, and I have no problem mounting the C: drive of the Windows system without root access, so I feel that this is a problem related to the mount point rather than mounting in general.

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  • GLOBALFOUNDRIES Accelerates Innovation while Protecting IP with AutoVue for Agile

    - by Celine Beck
    GLOBALFOUNDRIES is a full-service semiconductor foundry with a global footprint. Launched in March 2009, the company quickly grew to be the second-largest foundry in the world, providing a unique combination of advanced technology and manufacturing to more than 160 customers. With operations in Singapore, Germany, and the United States, GLOBALFOUNDRIES is the only foundry that offers the flexibility of having secure manufacturing centers that span three continents.We sat down with Kishan Shah, Manager of PLM Practice at GLOBALFOUNDRIES so that he can explain how Oracle AutoVue integrated with Oracle Agile PLM supports the company’s mission of “turning sand into gold” ; enabling collaborative design-for-manufacturing and fostering innovation, all while protecting critical intellectual property.You can watch the video interview by clicking here. A customer success story is also available on Oracle’s website. 

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