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repetitive_view presents
a view which iterates over a given Sequence
repeatedly. Because a repetitive_view
has infinite length, it can only be used when some external condition determines
the end. Thus, initializing a fixed length sequence with a repetitive_view is okay, but printing a
repetitive_view to std::cout
is not.
#include <boost/fusion/view/repetitive_view.hpp> #include <boost/fusion/include/repetitive_view.hpp>
template <typename Sequence> struct repetitive_view;
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Parameter |
Description |
Default |
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An arbitrary Fusion Forward Sequence |
Notation
RV
A repetitive_view type
s
An instance of Sequences
rv, rv1, rv2
Instances of RV
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Expression |
Return Type |
Semantics |
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Creates an |
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Copy constructs an |
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Assigns to a |
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Creates an unreachable iterator (since the sequence is infinite) |
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Expression |
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typedefvector<int, char, double> vec1; typedefvector<int, char, double, int, char> vec2; vec1 v1(1, 'c', 2.0); vec2 v2(repetitive_view<vec1>(v1)); std::cout << v2 << std::endl; // 1, 'c', 2.0, 1, 'c'