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21 lines
1.2 KiB
ReStructuredText
21 lines
1.2 KiB
ReStructuredText
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.. Copyright David Abrahams 2006. Distributed under the Boost
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.. Software License, Version 1.0. (See accompanying
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.. file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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The zip iterator provides the ability to parallel-iterate
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over several controlled sequences simultaneously. A zip
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iterator is constructed from a tuple of iterators. Moving
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the zip iterator moves all the iterators in parallel.
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Dereferencing the zip iterator returns a tuple that contains
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the results of dereferencing the individual iterators.
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The tuple of iterators is now implemented in terms of a Boost fusion sequence.
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Because of this the 'tuple' may be any Boost fusion sequence and, for backwards
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compatibility through a Boost fusion sequence adapter, a Boost tuple. Because the
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'tuple' may be any boost::fusion sequence the 'tuple' may also be any type for which a
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Boost fusion adapter exists. This includes, among others, a std::tuple and a std::pair.
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Just remember to include the appropriate Boost fusion adapter header files for these
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other Boost fusion adapters. The zip_iterator header file already includes the
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Boost fusion adapter header file for Boost tuple, so you need not include it yourself
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to use a Boost tuple as your 'tuple'.
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