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zip_view presents a view
which iterates over a collection of Sequence(s)
in parallel. A zip_view is
constructed from a Sequence of references
to the component __sequence__s.
#include <boost/fusion/view/zip_view.hpp> #include <boost/fusion/include/zip_view.hpp>
template <typename Sequences> struct zip_view;
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Parameter |
Description |
Default |
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A Forward Sequence of references to other Fusion __sequence__s |
Notation
ZV
A zip_view type
s
An instance of Sequences
zv1, zv2
Instances of ZV
Semantics of an expression is defined only where it differs from, or is not defined in Forward Sequence.
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Expression |
Semantics |
|---|---|
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Creates a |
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Copy constructs a |
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Assigns to a |
typedefvector<int,int> vec1; typedefvector<char,char> vec2; vec1 v1(1,2); vec2 v2('a','b'); typedefvector<vec1&, vec2&> sequences; std::cout << zip_view<sequences>(sequences(v1, v2)) << std::endl; // ((1 a) (2 b))