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By Björn Karlsson
Introducing the enhance libraries: the subsequent step forward in C++ programming.
Boost takes you some distance past the C++ regular Library, making C++ programming extra based, powerful, and efficient. Now, for the 1st time, a number one strengthen specialist systematically introduces the extensive set of increase libraries and teaches top practices for his or her use.
Writing for intermediate-to-advanced C++ builders, Björn Karlsson in brief outlines all fifty eight strengthen libraries, after which offers entire insurance of 12 libraries you're more likely to locate specifically necessary. Karlsson's issues variety from clever tips and conversions to bins and knowledge constructions, explaining precisely how utilizing every one library can enhance your code. He bargains targeted insurance of higher-order functionality items that assist you to write code that's extra concise, expressive, and readable. He even takes you "behind the scenes" with improve, revealing instruments and strategies for developing your personal regularly occurring libraries.
Coverage includes:
* shrewdpermanent tips that offer computerized lifetime administration of gadgets and simplify source sharing
* constant, best-practice suggestions for acting kind conversions and lexical conversions
* application periods that make programming easier and clearer
* versatile box libraries that remedy universal difficulties now not lined through the C++ normal Library
* robust aid for normal expressions with Boost.Regex
* functionality items outlined on the name website with Boost.Bind and Boost.Lambda
* extra versatile callbacks with Boost.Function
* controlled indications and slots (a.k.a. the Observer trend) with Boost.Signals
The strengthen libraries are proving so precious that lots of them are deliberate for inclusion within the subsequent model of the C++ commonplace Library. Get your head begin now, with past the C++ average Library.
Read Online or Download Beyond the C++ Standard Library: An Introduction to Boost PDF
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Additional info for Beyond the C++ Standard Library: An Introduction to Boost
Sample text
OpenMP includes a control structure only in those instances where a compiler can provide both functionality and performance over what a user could reasonably program. OpenMP provides two kinds of constructs for controlling parallelism. First, it provides a directive to create multiple threads of execution that execute concurrently with each other. The only instance of this is the parallel directive: it encloses a block of code and creates a set of threads that each execute this block of code concurrently.
In column one. As a result it looks like a normal Fortran comment and will be ignored by default. $ prefix are also included in the compiled code. The two characters that make up the prefix are replaced by white spaces at compile time. , with OpenMP enabled) makes the call to the subroutine. The serial version of the code ignores that entire statement, including the call and the assignment to iam. 1 Using the conditional compilation facility. iam = 0 ! The following statement is compiled only when !
To manage the indexing correctly, we compute new start and end values (i_start and i_end) for the loop that span only the width of a thread’s strip. 8 Concluding Remarks 39 computes the i_start and i_end values correctly, assuming my_thread is numbered either 0 or 1. With the modified loop extents we iterate over the points in each thread’s strip. First we compute the Mandelbrot values, and then we dither the values of each row (do j loop) that we computed. Because there are no dependences along the i direction, each thread can proceed directly from computing Mandelbrot values to dithering without any need for synchronization.