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Updated with an explanation of the new 'tuple' type for a zip_iterator based on Boost fusion sequences.

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Edward Diener 2015-08-24 00:24:09 -04:00
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doc/quickbook/zip_iterator.qbk
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@ -8,6 +8,16 @@ the zip iterator moves all the iterators in parallel.
Dereferencing the zip iterator returns a tuple that contains
the results of dereferencing the individual iterators.
The tuple of iterators is now implemented in terms of a Boost fusion sequence.
Because of this the 'tuple' may be any Boost fusion sequence and, for backwards
compatibility through a Boost fusion sequence adapter, a Boost tuple. Because the
'tuple' may be any boost::fusion sequence the 'tuple' may also be any type for which a
Boost fusion adapter exists. This includes, among others, a std::tuple and a std::pair.
Just remember to include the appropriate Boost fusion adapter header files for these
other Boost fusion adapters. The zip_iterator header file already includes the
Boost fusion adapter header file for Boost tuple, so you need not include it yourself
to use a Boost tuple as your 'tuple'.
[section:zip_example Example]
There are two main types of applications of the `zip_iterator`. The first