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• How is precedence determined in C pointers?

  - by ankur.trapasiya

  I've come across two pointer declarations that I'm having trouble understanding. My understanding of precedence rules goes something like this: Operator Precedence Associativity (), [ ] 1 Left to Right *, identifier 2 Right to Left Data type 3 But even given this, I can't seem to figure out how to evaluate the following examples correctly: First example float * (* (*ptr)(int))(double **,char c) My evaluation: *(ptr) (int) *(*ptr)(int) *(*(*ptr)(int)) Then, double ** char c Second example unsigned **( * (*ptr) [5] ) (char const *,int *) *(ptr) [5] *(*ptr)[5] *(*(*ptr)[5]) **(*(*ptr)[5]) How should I read them?

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• Stairway to T-SQL DML Level 5: The Mathematics of SQL: Part 2

  Joining tables is a crucial concept to understanding data relationships in a relational database. When you are working with your SQL Server data, you will often need to join tables to produce the results your application requires. Having a good understanding of set theory, and the mathematical operators available and how they are used to join tables will make it easier for you to retrieve the data you need from SQL Server.

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• Is beginner knowledge of Java enough to develop for Android? [closed]

  - by teenCoder

  I just finished the book "Tech Yourself Java in 24 Hours, 6th Edition" I have an understanding of the language (by understanding I mean, the basics and everything covered in the book) and I have been experimenting and building little things with my knowledge. I want to learn about Android and was wondering if I need to increase my knowledge in Java before moving on to Android or can I just go straight to Android?

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• Oracle Business Intelligence Advanced - Hands-on Workshop para Parceiros - 18 a 21 de Janeiro

  - by Claudia Costa

  Workshop Description This FREE hands-on workshop highlights strengths of OBIEE 11g by providing attendees a hands-on experience with BI 11g product. OBIEE 11g has adopted the standardized infrastructure of Fusion Middleware to provide robust server capability along with highly anticipated advanced visualization components like Maps, Flash based charts, Scorecards and KPIs. This workshop focuses on new features and infrastructure components for the BI practitioners who are familiar with either OBIEE 10g or previous BI releases. After taking this course, Oracle Business Intelligence 11g Advanced, you will gain insight into OBIEE11g technology, reporting solutions and new features. Workshop provides opportunities to practice with OBIEE11g environment as hands on activities. Participant will gain in-depth understanding of new architecture of OBIEE 11g, security mode, installation/configuration as well as reporting aspects like, new ROLAP/MOLAP style hierarchical browsing, new chart types, Action Framework and Advanced Visualization. If you are a Business Intelligence practitioners and familiar with BI10g - you cannot afford to miss this 3-day workshop. Register Now! PresentationsBusiness Intelligence EE (OBIEE) 11g: Advanced Workshop ·         OBIEE 11g Overview ·         OBIEE 11g Architecture and Infrastructure ·         OBIEE 11g Installation, Configuration and Monitoring ·         OBIEE11g Security Model and BI Components ·         OBIEE 11g Homepage Overview ·         New Visualizations: Master-Detail Events, Charts, Hierarchies ·         Reports Building with OBIEE 11g and Catalog Management ·         Spatial Integration, Action Framework, Scorecards ·         OBIEE 11g Dashboards ·         OBIEE Integration Options  Lab OutlineOracle Business Intelligence (OBIEE) 11g: Advanced Workshop The labs enable OBIEE Core functionality through hands-on activities are based on a Oracle VirtualBox image with software and training samples pre-installed. This Advanced course has few labs optional during the workshop to allow for students to practice them on their own. The primary purpose of the workshop is to provide expertise of 11g features and infrastructure changes from 10g. Labs will allow you to explore concepts to: ·         Have a clear understanding of the OBIEE 11g architecture ·         Have a clear understanding of the OBIEE differentiators ·         OBIEE11g Security Model ·         OBIEE11g Environment Management ·         Report Building with OBIEE11g ·         OBIEE11g Dashboard and Homepage Environment ·         New Visualization features ·         Management of Reports, Dashboards and BI Catalog Objects Audience ·         Business Intelligence Evangelist ·         Business Intelligence Application Developer or Consultant ·         Data Warehouse Developer ·         Enterprise Architects ·         Industry Solutions Architects Prerequisites ·         Experience and Understanding of OBIEE 10g is required. ·         Good understanding of data modeling for reporting purpose ·         Strong experience with database technologies preferred Equipment RequirementsThis workshop requires attendees to provide their own laptops. Attendee laptops must meet the following minimum hardware/software requirements: OBIEE 11g environments requires at least 3 GB of RAM (4GB Preferred), without which student will not be able to complete labs. This workshop has environment that includes VM Image and also a software components that students will install on their laptop for the labs. ·         Minimum 3GB RAM. 25GB free disk space ·         Internet Explorer 7 ·         VirtualBox (the latest version) ·         Downloadable from http://www.virtualbox.org ·         WINRAR or 7zip ·         Downloadable from http://www.win-rar.com/download.html ·         Downloadable from http://www.7zip.com/ Attendees will be given a VirtualBox image for Oraclee BI 11g Workshop containing the software along with required toolset, database and data sets for the labs. AgendaThis class duration is 3 Days9:00am: Sign-in and Technical Set up9:30am : Workshop Starts5:00pm : Workhop Ends LocalHotel Holiday Inn Express - Porto Salvo - Lisboa This class is Free. Register early to confirm a seat! Oracle BI Advanced 11g Hands-on Workshop - Schedule Register Now! January 11-13, 2011: Kista, Sweden January 18-20, 2011: Lisbon, Portugal March 1-3, 2011: Reading, Berkshire, UK March 15-17, 2011: Colombes, Paris, France March 29-31, 2011: Amsterdam, Netherlands Questions? For registration questions please send an email to [email protected]. Para outras informações, por favor contacte Claudia Costa, telf: 214235027 ou pelo email   

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• Getting Started with StreamInsight 2.1

  - by Roman Schindlauer

  If you're just beginning to get familiar with StreamInsight, you may be looking for a way to get started. What are the basics? How can I get my first StreamInsight application running so I can see how it works? Where is the 'front door' that will get me going? If that describes you, then this blog entry might be just what you need. If you're already a StreamInsight wiz, keep reading anyway - you may find some helpful links here that you weren't aware of. But here's what we'd like from you experienced readers in particular: if you know of other good resources that we missed, please feel free to add them in the comments below. We appreciate you sharing your expertise. The Book The basic documentation for StreamInsight is located in the MSDN Library (Microsoft StreamInsight 2.1). You'll notice that previous versions of StreamInsight are still there (1.2 and 2.0), but if you're just getting started you can stick to the 2.1 section. The documentation has been organized to function as reference material, which is fine after you're familiar with the technology. But if you're trying to learn the basics, you might want to take a different path instead of just starting at the top. The following is one map you can use. What Is StreamInsight? Here is a sequence of topics that should give you a good overview of what StreamInsight is and how it works: Overview answers the question, "what is it?" StreamInsight Server Architecture gives you a quick look at a high-level architectural drawing StreamInsight Concepts lays out an overview of the basic components Deploying StreamInsight Entities to a StreamInsight Server describes the mechanics of how these components work together Getting an Example Running Once you have this background, go ahead and install StreamInsight and get a basic example up and running: Installation download and install the software StreamInsight Examples walk through a set of 3 simple StreamInsight applications that work together to demonstrate what you learned in the topics above; you can copy and paste the code into Visual Studio, compile, and run That's it - you now have a real, functioning StreamInsight system! Now that you have a handle on the basics, you might want to start digging deeper. Digging Deeper Here's a suggested path through the documentation to help you understand the next layer of StreamInsight technologies: Using Event Sources and Event Sinks sources supply data and sinks consume it; this topic gives you an overview of how they work Publishing and Connecting to the StreamInsight Server practical details on how to set up a StreamInsight server A Hitchhiker’s Guide to StreamInsight 2.1 Queries queries are the heart of how StreamInsight performs data analytics, and this whitepaper will help you really understand how they work Using StreamInsight LINQ root through this section for technical details on specific query components Using the StreamInsight Event Flow Debugger in addition to troubleshooting, the debugger is a great way to learn more about what goes on inside a StreamInsight application And Even Deeper Finally, to get a handle on some of the more complex things you can do with StreamInsight, dig into these: Input and Output Adapters adapters can be useful for handling more complex sources and sinks Building Resilient StreamInsight Applications a resilient application is able to recover from system failures Operations this section will help you monitor and troubleshoot a running StreamInsight system The StreamInsight Community As you're designing and developing your StreamInsight solutions, you probably will find it helpful to see working examples or to learn tips and tricks from others. Or maybe you need a place to post a vexing question. Here are some community resources that we have found useful. If you know of others, please add them in the comments below. Code samples and tools Official StreamInsight code samples Introduction to LinqPad Driver for StreamInsight 2.1 - LinqPad is a very useful tool for developing queries The following case studies are based on earlier versions of StreamInsight, but they still are useful examples: Microsoft Media Analytics - real-time monitoring and analytic Edgenet - responding to information from multiple source ICONICS - managing energy usage Blogs Microsoft StreamInsight Ruminations of J.net Richard Seroter's Architecture Musings pluralsight Forums MSDN StreamInsight Forum stackoverflow Training Microsoft StreamInsight Fundamentals (“Introducing StreamInsight” is free) from pluralsight Twitter @streaminsight   You’re a StreamInsight Expert That should get you going. Please add any other resources you have found useful in the comments below.   Regards, The StreamInsight Team

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• Oracle OpenWorld Key Financials Sessions

  - by Theresa Hickman

  Oracle OpenWorld is just around the corner on Sept. 19-23, 2010 at Moscone Center in San Francisco, California. There will be about 70 financial sessions across all the financials product lines: e-Business Suite, JD Edwards, PeopleSoft, and Fusion. I wanted to highlight some of the key financials sessions: Oracle E-Business Financials: Vision, Release Overview, and Product Roadmap: This session provides a comprehensive overview of Oracle's product strategy for Oracle Financials. This cornerstone session for Oracle Financials includes customer successes with Oracle Financials Release 12.1. Value of Upgrading to Release 12.1 for Oracle Financials: This session provides best practices and lessons learned from customers that have already upgraded to Release 12 and 12.1. PeopleSoft Financial Management Solutions High-Value Roadmap into Release 9.2: This session reviews the roadmap candidate ideas for Release 9.2 and discusses PeopleSoft Financials integration with Oracle solutions, such as Hyperion, Governance, Risk, and Compliance (GRC), and business intelligence products. Oracle Fusion Financials Overview: Terrance Wampler, the VP of Financials Product Strategy, and Rondy Ng, Group VP of Financial Applications Development, will discuss the key product differentiators to help customers understand the value that Oracle Fusion Financials can bring to their organizations. Answers to the Top 10 Questions About Oracle Fusion Financials: This session talks about how Oracle Fusion Financials can coexist with customers' existing investments in e-Busines Suite, PeopleSoft, and JD Edwards. It will also highlight the advantages of the Oracle Fusion technology stack, migration of existing applications to Oracle Fusion, and the role of codevelopment partners, such as Infosys. The panel will also accept questions from the attendees in order to address other questions customers may have about Oracle Fusion. In addition, the following sessions will discuss how customers who are currently using JD Edwards, PeopleSoft, and e-Business Suite can coexist with Fusion Financials without major disruption of existing applications. Customers will learn how they can adopt portions of Oracle Fusion Financials to deliver value-add functionality while maintaining and extending their current deployment of Oracle applications. Understanding Oracle Fusion Financials for JD Edwards Customers Understanding Oracle Fusion Financials for PeopleSoft Customers Understanding Oracle Fusion Financials for Oracle E-Business Suite Customers For more information and to register for OpenWorld, see www.oracle.com/openworld.

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• How do I create my own programming language and a compiler for it

  - by Dave

  I am thorough with programming and have come across languages including BASIC, FORTRAN, COBOL, LISP, LOGO, Java, C++, C, MATLAB, Mathematica, Python, Ruby, Perl, JavaScript, Assembly and so on. I can't understand how people create programming languages and devise compilers for it. I also couldn't understand how people create OS like Windows, Mac, UNIX, DOS and so on. The other thing that is mysterious to me is how people create libraries like OpenGL, OpenCL, OpenCV, Cocoa, MFC and so on. The last thing I am unable to figure out is how scientists devise an assembly language and an assembler for a microprocessor. I would really like to learn all of these stuff and I am 15 years old. I always wanted to be a computer scientist someone like Babbage, Turing, Shannon, or Dennis Ritchie. I have already read Aho's Compiler Design and Tanenbaum's OS concepts book and they all only discuss concepts and code in a high level. They don't go into the details and nuances and how to devise a compiler or operating system. I want a concrete understanding so that I can create one myself and not just an understanding of what a thread, semaphore, process, or parsing is. I asked my brother about all this. He is a SB student in EECS at MIT and hasn't got a clue of how to actually create all these stuff in the real world. All he knows is just an understanding of Compiler Design and OS concepts like the ones that you guys have mentioned (i.e. like Thread, Synchronization, Concurrency, memory management, Lexical Analysis, Intermediate code generation and so on)

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• How do I create my own programming language and a compiler for it

  - by Dave

  I am thorough with programming and have come across languages including BASIC, FORTRAN, COBOL, LISP, LOGO, Java, C++, C, MATLAB, Mathematica, Python, Ruby, Perl, Javascript, Assembly and so on. I can't understand how people create programming languages and devise compilers for it. I also couldn't understand how people create OS like Windows, Mac, UNIX, DOS and so on. The other thing that is mysterious to me is how people create libraries like OpenGL, OpenCL, OpenCV, Cocoa, MFC and so on. The last thing I am unable to figure out is how scientists devise an assembly language and an assembler for a microprocessor. I would really like to learn all of these stuff and I am 15 years old. I always wanted to be a computer scientist some one like Babbage, Turing, Shannon, or Dennis Ritchie. I have already read Aho's Compiler Design and Tanenbaum's OS concepts book and they all only discuss concepts and code in a high level. They don't go into the details and nuances and how to devise a compiler or operating system. I want a concrete understanding so that I can create one myself and not just an understanding of what a thread, semaphore, process, or parsing is. I asked my brother about all this. He is a SB student in EECS at MIT and hasn't got a clue of how to actually create all these stuff in the real world. All he knows is just an understanding of Compiler Design and OS concepts like the ones that you guys have mentioned (ie like Thread, Synchronisation, Concurrency, memory management, Lexical Analysis, Intermediate code generation and so on)

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• What are all the components of a "Facebook App"?

  - by pnongrata

  I am a developer who has never personally partaken in social media (in any form) for reasons completely outside the scope of this question. I am "off the grid" (no Facebook, Twitter, etc accounts). I'm currently building a web app and would like the app to have a presence on Facebook, and possibly even "port" my app over as a Facebook app. My understanding of Facebook Apps is that they're just normal web apps that get <iframe>d into a Facebook page. The app is actually hosted on your server (not FB's servers). But this got me thinking: Don't Facebook Apps have "profile pages"? Is there anything developers can do to customize the behavior of their own profile pages? Do apps have the ability to do things like MySpace themes used to do (i.e., customize and interact with User profile pages, Groups, etc.)? Do Facebook Apps gain any sort of extra capabilities (inside of Facebook) that a normal web app would not have? It seems to me like if all a Facebook App is, is an iframed-web app, that it would still need to communicate with Facebook via its many APIs, just like a normal app would have to, right? If it's not possible to write an app that can customize the UI or behavior of user profiles and other pages, then how do games like "Farmville" interact with User profiles so that you see updates to profiles like "John Smith reached level 2 of Farmville"? Basically, I'm asking any battle-worn Facebook app developers if my understanding of Facebook Apps is correct, or if I'm missing anything big here. It's my understanding that for security reasons (obviously) Facebook doesn't allow apps to customize anything outside of the iframe it lives in. So if I want my app to appear like it's "interacting" with its Facebook users, it looks like I just need to publish stuff to the users' news feeds to try and encourage people to use my app (please correct me if I'm wrong here!). Thanks in advance for any corrections, clarifications, advice or suggestions!

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• Learning Linux screencasts

  - by Dmitriy Nagirnyak

  Hi, I am trying to get started with Linux. There are number of books (many of which are just man pages), some of them provide good overview so I can dig deeper online then. What I would like is to find number of screencasts that would cover basics of Linux commands, server administration, commonly performed tasks etc (no GUI, only terminal). I want to watch the screencasts to "get it quicker" and then use a book or online resources to "dig it deeper". Any recommendations? Thanks, Dmitriy.

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• What is the value in hiding the details through abstractions? Isn't there value in transparency?

  - by user606723

  Background I am not a big fan of abstraction. I will admit that one can benefit from adaptability, portability and re-usability of interfaces etc. There is real benefit there, and I don't wish to question that, so let's ignore it. There is the other major "benefit" of abstraction, which is to hide implementation logic and details from users of this abstraction. The argument is that you don't need to know the details, and that one should concentrate on their own logic at this point. Makes sense in theory. However, whenever I've been maintaining large enterprise applications, I always need to know more details. It becomes a huge hassle digging deeper and deeper into the abstraction at every turn just to find out exactly what something does; i.e. having to do "open declaration" about 12 times before finding the stored procedure used. This 'hide the details' mentality seems to just get in the way. I'm always wishing for more transparent interfaces and less abstraction. I can read high level source code and know what it does, but I'll never know how it does it, when how it does it, is what I really need to know. What's going on here? Has every system I've ever worked on just been badly designed (from this perspective at least)? My philosophy When I develop software, I feel like I try to follow a philosophy I feel is closely related to the ArchLinux philosophy: Arch Linux retains the inherent complexities of a GNU/Linux system, while keeping them well organized and transparent. Arch Linux developers and users believe that trying to hide the complexities of a system actually results in an even more complex system, and is therefore to be avoided. And therefore, I never try to hide complexity of my software behind abstraction layers. I try to abuse abstraction, not become a slave to it. Question at heart Is there real value in hiding the details? Aren't we sacrificing transparency? Isn't this transparency valuable?

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• C#.NET (AForge) against Java (JavaCV, JMF) for video processing

  - by Leron

  I'm starting to get really confused looking deeper and deeper at video processing world and searching for optimal choices. This is the reason to post this and some other questions to try and navigate myself in the best possible way. I really like Java, working with Java, coding with Java, at the same time C# is not that different from Java and Visual Studio is maybe the best IDE I've been working with. So even though I really want to do my projects in Java so I can get better and better Java programmer at the same time I'm really attract to video processing and even though I'm still at the beginning of this journey I want to take the right path. So I'm really in doubt could Java be used in a production environment for serious video processing software. As the title says I already have been looking at maybe the two most used technologies for video processing in Java - JMF and JavaCV and I'm starting to think that even they are used and they provide some functionality, when it comes to real work and real project that's not the first thing that comes to once mind, I mean to someone that have a professional opinion about this. On the other hand I haven't got the time to investigate .NET (c# specificly) options but even AForge looks a lot more serious library then those provided for Java. So in general -either ways I'm gonna spend a lot of time learning some technology and trying to do something that make sense with it, but my plan is at the end the thing that I'll eventually come up to be my headline project. To represent my skills and eventually help me find a job in the field. So I really don't want to spend time learning something that will give me the programming result I want but at the same time is not something that is needed in the real world development. So what is your opinion, which language, technology is better for this specific issue. Which one worths more in terms that I specified above?

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• A Year of Upheaval for Procurement Professionals-New Report & Webinar

  - by DanAshton

  2013 will see significant changes in priorities and initiatives among procurement professionals as they balance the needs of their enterprises with efforts to add capabilities for long-term procurement success. In response, procurement managers will expand their organization’s spend influence via supplier relationship management, sourcing, and category management. These findings are part of the new report, “2013 Procurement Key Issues: Going Deeper and Broader to Deliver Borderless Procurement Services,” by the Hackett Group. The authors say that compared to similar studies over the last five years, 2013 is registering the greatest year-over-year changes in priorities for both procurement performance and capability issues. Three Important PrioritiesThe survey found that procurement professionals are focusing their attention in three key areas. Cost reduction. Controlling expenses is always a high priority, but with 90 percent of the respondents now placing this at the top of their performance concerns, the Hackett analysts say this “clearly shows that, for better or worse, cost reduction is king” in 2013. Technology innovation. Innovation has shot up significantly in the priority rankings and is now tied with spend influence for second among procurement professionals. Sixty-five percent of the survey participants said pursuing game-changing innovation and technology is a top procurement initiative. Managing supply risk. This area registered a sharp rise in importance because of its role in protecting profits, Hackett says. Supplier compliance with performance milestones and regulatory requirements is receiving particular attention, with an emphasis on efficient management of cross-functional workflows. “These processes create headaches for suppliers and buyers alike, and can detract from strategic value creation when participants are bogged down in processing paper and spreadsheets,” the report explains.  For more insights into the current state of the procurement industry, download the full report, “2013 Procurement Key Issues: Going Deeper and Broader to Deliver Borderless Procurement Services” and watch a Webcast featuring Global Procurement Advisory Practice Leader for The Hackett Group, Chis Sawchuk, and Managing Supervisor of Supply Chain Processes and Systems for Ameren, Chris Nelms. 

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• EMEA Analytics & Data Integration Oracle Partner Forum

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

  MONDAY 12TH NOVEMBER, 2012 IN LONDON (UK) For Oracle Partners across Europe, Middle East and Africa: come to hear the latest news from Oracle OpenWorld about Oracle BI & Data Integration, and propel your business growth as an Oracle partner. This event should appeal to BI or Data Integration specialised partners, Executives, Sales, Pre-sales and Solution architects: with a choice of participation in the plenary day and then a set of special interest (technical) sessions. The follow on breakout sessions from the 13th November provide deeper dives and technical training for those of you who wish to stay for more detailed and hands-on workshops. Keynote: Andrew Sutherland, SVP Oracle Technology Hot agenda items will include: The Fusion Middleware Stack: Engineered to work together A complete Analytics and Data Integration Solution Architecture: Big Data and Little Data combined In-Memory Analytics for Extreme Insight Latest Product Development Roadmap for Data Integration and Analytics Venue:  Oracles London CITY Moorgate Offices Places are limited, Register from this Link {see Register button at bottom right of page}. Note: Registration for the conference and the deeper dives and technical training is free of charge to OPN member Partners, but you will be responsible for your own travel and hotel expenses. Event Schedule During this event you can learn about partner success stories, participate in an array of break-out sessions, exchange information with other partners and enjoy a vibrant panel discussion. Nov. 12th  : Day 1 Main Plenary Session : Full day, starting 10.30 am.     Oracle Hosted Dinner in the Evening Nov. 13th  onwards Architecture Masterclass : IM Reference Architecture – Big Data and Little Data combined (1 day) BI-Apps Bootcamp  (4-days) Oracle GoldenGate workshop (1 day) Oracle Data Integrator and Oracle Enterprise Data Quality workshop (1 day)   For further information and detail download the Agenda (pdf) or contact Michael Hallett at [email protected].

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• Do you think Scala will be the dominant JVM langauge, ie be the next Java? [on hold]

  - by user1037729

  From what I've read about Scala do far I think it has some nice features but I do not think it should be "the next Java". It might however end up being the next Java (due to fashion rather than fact) but lets not hope it does not... To me adds a lot of complexity over Java which is a simple and scalable language. Scala Pattern matching allows you to perform some type/value checking in a more concise way, this is possible in Java, Scala's pattern matching has a limit to it, you cannot continuously match deeper and deeper down the object graph, so why not just stick to Java and use decent invariants? Scala provides tuples, easy enough to make in Java, create a static factory method and it all reads nicely too. Scala provides mixins, why not just use composition? I believe Scala implicit's are bad, they can lead to code becoming complex and hard to maintain, explicitness is good. Scala provides closures, well they will be in Java 8 too. Scala has lazy keyword for lazy instantiation, this is easy enough to do in Java by calling a getter which creates the instance when needed, no hidden magic here. Scala can be used with AKKA, well so can Java, there is an Java AKKA implementation. Scala offers addition functional features but these can all be created in Java, there are many frameworks with have implemented functional features in Java. All in all Scala seems to offer is addition complexity and thats it...

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• Threading 101: What is a Dispatcher?

  - by Water Cooler v2

  Once upon a time, I remembered this stuff by heart. Over time, my understanding has diluted and I mean to refresh it. As I recall, any so called single threaded application has two threads: a) the primary thread that has a pointer to the main or DllMain entry points; and b) For applications that have some UI, a UI thread, a.k.a the secondary thread, on which the WndProc runs, i.e. the thread that executes the WndProc that recieves messages that Windows posts to it. In short, the thread that executes the Windows message loop. For UI apps, the primary thread is in a blocking state waiting for messages from Windows. When it recieves them, it queues them up and dispatches them to the message loop (WndProc) and the UI thread gets kick started. As per my understanding, the primary thread, which is in a blocking state, is this: C++ while(getmessage(/* args &msg, etc. */)) { translatemessage(&msg, 0, 0); dispatchmessage(&msg, 0, 0); } C# or VB.NET WinForms apps: Application.Run( new System.Windows.Forms() ); Is this what they call the Dispatcher? My questions are: a) Is my above understanding correct? b) What in the name of hell is the Dispatcher? c) Point me to a resource where I can get a better understanding of threads from a Windows/Win32 perspective and then tie it up with high level languages like C#. Petzold is sparing in his discussion on the subject in his epic work. Although I believe I have it somewhat right, a confirmation will be relieving.

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• Do Cpuidle governors and Cpufreq governors work in mutual exclusion ?

  - by kashyapa

  My understanding is that when a cpu is in C0 state , the cpufreq governor decides what P-state the CPU should reside in .When a CPU goes idle, it falls from C0 state to a deeper C-state. The cpuidle govenor, say menu , takes over in deciding which C-state the CPU should go to , once the CPU goes idle . Is my understanding correct ?

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• Increase in Available Memory expected by adding 1Gb RAM to a 3Gb Vista 32 bit system

  - by Bob423

  I understand the 32 bit Vista limit in addressing only 4Gb of memory space but I have a very specific question: I have 3Gb installed on a Vista 32 bit system with a 512Mb video card, MSI X-58 board, Intel i7, 920 CPU. System Information currently shows: Installed Memory: 3.00Gb Available Physical Memory: 1.73 Gb My understanding is that the 512Mb video card occupies memory addresses between 4.0Gb and 3.5Gb and so does not subtract from the 3.0Gb of physical memory (correct my understanding if wrong) My Question: If I install another 1Gb of RAM, will my Available Memory increase to 2.73Gb? Thanks, Bob423

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• Reasons to learn MSIL

  - by mannu

  Hi, Learning MSIL is fun and all that. Understanding what is going on "under the hood" can in many ways improve how you write your code performance-wise. However, the IL that is produced by the compiler is quite verbose and does not tell the whole story since JIT will optimize away a lot of the code. I, personally, have had good use of my very basic IL understanding when I've had to make a small fix in an assembly I do not have the source code for. But, I could as well have used Reflector to generate C# code. I would like to know if you've ever had good use of MSIL understanding and/or why you think it is worth learning it (except for the fun in it, of course). I'd also like to know if you think one should not learn it and why.

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• Helping managers and customers understand SOA

  - by David

  I frequently hear Service-Oriented Architecture (SOA) being tossed around as a buzzword among non-technical customers or program managers with little concern or understanding for what it actually entails (example: "Can I buy a SOA?"). There's also a lot of misinformation about SOA (example: "Only web apps can use SOA") and a general lack of understanding for its capabilities (example: "SOA can make your make all of your data work together"). What are some key facts that you, as someone who understand the technical side of SOA, use to educate program managers on the appropriate use and understanding of SOA? What's the best way to set the record straight with non-technical folks?

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• Why does jQuery do this in its constructor function implementation?

  - by mattcodes

  If we look at the latest jQuery source at http://code.jquery.com/jquery-latest.js we see the following: var jQuery = function( selector, context ) { // The jQuery object is actually just the init constructor 'enhanced' return new jQuery.fn.init( selector, context ); } My understanding of the new keyword in Javascript is essentially JavaScript passes the function an empty object {} and the function sets stuff on it via this.blah. Also from my understanding new differs from .call/.apply etc.. in that the return object also has the prototype set to that of the function. So the return value should have a prototype that the same as jQuery.prototype.init.prototype (or jQuery.fn.init.prototype). However from what I see its prototype is set to jQuery.prototype thus all the commands available to work on the set. Why is this? What am I missing in my understanding?

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• LINQ to XML

  Gain an understanding of LINQ (Language Integrated Query) to XML and see why you'll never want to use the DOM again.

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• Learning Linux screencasts

  - by Dmitriy Nagirnyak

  Hi, I am trying to get started with Linux. There are number of books (many of which are just man pages), some of them provide good overview so I can dig deeper online then. What I would like is to find number of screencasts that would cover basics of Linux commands, server administration, commonly performed tasks etc (no GUI, only terminal). I want to watch the screencasts to "get it quicker" and then use a book or online resources to "dig it deeper". Any recommendations? Thanks, Dmitriy.

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• Any good tutorials all this web programming stuff for a GUI person? [closed]

  - by supercheetah

  For some reason, I am having a hard time understanding all this web programming stuff--from AJAX to JSON, etc. I've got plenty of experience programming GUIs. I'm currently working on a project in Python, and I thought that maybe I could just use PyJS (since it's GWT for Python, it uses an API that's very familiar to experienced GUI programmers like myself) to compile it with a Javascript interface on top, but alas, the compiler gave me a spectacular failure. It's obviously not meant to handle much of any Python beyond itself, and some of the core Python library. It would have been nice if it could, but I will admit, it would have been the lazy way to do it. I tried to learn Django, but for some reason, I'm just having a hard time understanding the tutorial on their website, and what it's all doing. Maybe it's not the best framework to learn, perhaps? Anyway, does anyone have a good primer/tutorial explaining all this stuff, especially for Python, and especially for someone coming from a GUI background?

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• Thoughts about MVC

  - by ayyash

  so i figured this one out, as a newcomer to the web development scene from the telecom biz, where we dealt with low level hardware API's, and a C++ fanboy, i tend to be bothered by automagical code, yes i appreciate the effort that went into it, and i certainly appreciate the luxury it provides to get more things done, but i just don't get it. so i decided to change that, and start investigating the new MVC based web apps, and at first it was like hitting a brick wall, i knew MVC from MFC days, so i'm familiar with the pattern, but i just couldn't get my head around the web version of it, till i came to realize the routing, is actually a separate feature to be inspected, much like understanding how LINQ works by better understanding anonymous objects. and so this article serve as an introduction to the following blogs where i share my views of how asp.net routing works, and then leverage that to the MVC level, and play around that field for a bit. as with most of my shared knowladge that may seem trivial to some, but i guess a newcomer's point of view can be useful for some folks out there.

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