The I/O manager determines that an I/O operation is using buffered I/O as follows: The following figure illustrates how the I/O manager sets up an IRP_MJ_READ request for a transfer operation that uses buffered I/O. The figure shows an overview of how drivers can use the SystemBuffer pointer in the IRP to transfer data for a read request, when a driver has ORed the device object's Flags with DO_BUFFERED_IO: Drivers that transfer large amounts of data at a time, in particular, drivers that do multipage transfers, should not attempt to use buffered I/O. Using Buffered I/O (Windows Driver Kit)
Mark Watson, Ruby and Java Consultant and Author I am the author of 16 published books on Artificial Intelligence, Java, Ruby, Common LISP, Semantic Web, NLP, C++, Linux, Scheme, and Windows. I have free web books and published books on my books page. I also hope that you find my open source projects on github useful.
Package Index : SIP 4.12.1 Package Index > SIP > 4.15.5 Not Logged In Python extension module generator for C and C++ libraries SIP is an extension module generator similar to SWIG but is specifically designed for creating Python modules. Generated code can be compiled for Python v2 and v3. Downloads (All Versions): 0 downloads in the last day 0 downloads in the last week 0 downloads in the last month
Accurately computing running variance The most direct way of computing sample variance or standard deviation can have severe numerical problems. Mathematically, sample variance can be computed as follows. The most obvious way to compute variance then would be to have two sums: one to accumulate the sum of the x's and another to accumulate the sums of the squares of the x's. If the x's are large and the differences between them small, direct evaluation of the equation above would require computing a small number as the difference of two large numbers, a red flag for numerical computing. The loss of precision can be so bad that the expression above evaluates to a negative number even though variance is always positive.
Shared libraries are libraries that are loaded by programs when they start. When a shared library is installed properly, all programs that start afterwards automatically use the new shared library. It's actually much more flexible and sophisticated than this, because the approach used by Linux permits you to: Shared Libraries
The goal of neuroscience is to discover the relationships between brain, behavior, and disease. Using the Brain Systems, Connections, Associations, and Network Relationships (brainSCANr) engine, you can explore the relationships between neuroscience terms in peer reviewed publications. Who Are We? We are Bradley Voytek (blog, twitter, CV), PhD and Jessica Bolger Voytek, a husband and wife team who thought it would be fun to combine our interests. Bradley has a PhD in Neuroscience from the University of California, Berkeley, and is currently researching the brain networks and underlying physiology mediating cognition. Jessica has a Masters in Information Management and Systems, and is working as a User Interface Developer for a and (separately) as an entrepreneur developing the future of kids' science education.
By Victor J. Duvanenko , December 03, 2010 A Reflection on Parts 1-9 We’ve reached the tenth part of this series on algorithm performance. It seems like a nice arbitrary spot to take inventory and reflect, before continuing on the journey of the next nine. Algorithm Performance | Dr. Dobb's and Intel Go Parallel Programming
Wotsit.org Welcome to Wotsit.org, the programmer's file and data format resource. This site contains information on hundreds of different file types, data types, hardware interface details and all sorts of other useful programming information; algorithms, source code, specifications, etc. The search box (above right) is the simplest way to find information on a specific file type, all resources are also listed by category via the links on the left. As you will have noticed Wotsit.org has undergone a long-overdue redesign. The new design should be quick to load and it should be easy to find what you're looking for.
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Coming from a background in Pascal and C, during the 1990s, like most others, I became infatuated with Object-Oriented programming. I thought they were really on to something. It seemed intuitive. Objects, Identity, and Concept-Formation « Apocalisp
C# will be slower in general, but not significantly so. In some cases, depending on the structure of the code, C# can actually be faster, as JIT analysis can frequently improve the performance of a long-running algorithm. Edit: Here's a nice discussion of C# vs C++ performance Edit 2: "In general" is not really accurate. As you say, the JIT compiler can actually turn your MSIL into faster native code that the C++ compiler because it can optimize for the hardware it is running on. Performance difference between C++ and C# for mathematics
Download ProcessingPlay With ExamplesBrowse Tutorials Processing is a programming language, development environment, and online community. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology.
Ask any kid what Facebook is for and he'll tell you it's there to help him make friends. What else could he think? It's how he *does* make friends. He has no idea the real purpose of the software, and the people coding it, is to monetize his relationships. He isn't even aware of those people, the program, or their purpose. The kids I celebrated in my early books as "digital natives" capable of seeing through all efforts of big media and marketing have actually proven *less* capable of discerning the integrity of the sources they read and the intentions of the programs they use. Douglas Rushkoff: Why Johnny Can't Program: A New Medium Requires A New Literacy
That C has won the end-user practicality battle is obvious to everyone except developers. The year is 1978, and the first wave of punk rock is reaching its nihilistic peak with infamous U.K. band the Sex Pistols touring the United States and promptly breaking up by the time they reach the West Coast. Elsewhere, Brian Kernighan and Dennis Ritchie are putting the finishing touches on their book The C Programming Language, which will become the de facto standardization of the language for years. The Pragmatic Bookshelf
Initially everyone sucks at programming. So we decided to compile a list that identifies reasons and advice to improve your programming skills. 1. Is programming right for everyone? Let’s get this straight. 10 Reasons Why People Initially Suck at Programming | Talk Binary