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boost_fusion/doc/preface.qbk
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[/==============================================================================
Copyright (C) 2001-2007 Joel de Guzman, Dan Marsden, Tobias Schwinger
Use, modification and distribution is subject to the Boost Software
License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
===============================================================================/]
[section Preface]
[:['["Algorithms + Data Structures = Programs.]]]
[:*--Niklaus Wirth*]
[heading Description]
Fusion is a library for working with heterogenous collections of data,
commonly referred to as tuples. A set of containers (vector, list, set and map)
is provided, along with views that provide a transformed presentation
of their underlying data. Collectively the containers and views are referred to
as sequences, and Fusion has a suite of algorithms that operate upon the
various sequence types, using an iterator concept that binds everything
together.
The architecture is modeled after __mpl__ which in turn is modeled after
__stl__. It is named "fusion" because the library is a "fusion" of compile
time metaprogramming with runtime programming.
[heading Motivation]
Tuples are powerful beasts. After having developed two significant projects
(__spirit__ and __phoenix__) that relied heavily metaprogramming, it
became apparent that tuples are a powerful means to simplify otherwise tricky
tasks; especially those that require a combination of metaprogramming and
manipulation of heterogenous data types with values. While __mpl__ is an
extremely powerful metaprogramming tool, __mpl__ focuses on type
manipulation only. Ultimately, you'll have to map these types to real
values to make them useful in the runtime world where all the real action
takes place.
As __spirit__ and __phoenix__ evolved, patterns and idioms related to tuple
manipulation emerged. Soon, it became clear that those patterns and idioms
were best assembled in a tuples algorithms library. __david_abrahams__
outlined such a scheme in 2002. At that time, it just so happened that
__spirit__ and __phoenix__ had an adhoc collection of tuple manipulation
and traversal routines. It was an instant /AHA!/ moment.
[heading How to use this manual]
Some icons are used to mark certain topics indicative of their relevance.
These icons precede some text to indicate:
[table Icons
[[Icon] [Name] [Meaning]]
[[__note__] [Note] [Information provided is auxiliary but will
give the reader a deeper insight into a specific
topic. May be skipped.]]
[[__alert__] [Alert] [Information provided is of utmost importance.]]
[[__caution__] [Caution] [A mild warning.]]
[[__tip__] [Tip] [A potentially useful and helpful piece of
information.]]
]
This documentation is automatically generated by Boost QuickBook documentation
tool. QuickBook can be found in the __boost_tools__.
[heading Support]
Please direct all questions to Spirit's mailing list. You can subscribe to the
__spirit_list__. The mailing list has a searchable archive. A search link to
this archive is provided in __spirit__'s home page. You may also read and post
messages to the mailing list through __spirit_general__ (thanks to __gmane__).
The news group mirrors the mailing list. Here is a link to the archives:
__mlist_archive__.
[endsect]