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iterator_range presents a
sub-range of its underlying sequence delimited by a pair of iterators.
#include <boost/fusion/view/iterator_range.hpp> #include <boost/fusion/include/iterator_range.hpp>
template <typename First, typename Last> struct iterator_range;
First
and Last implement the
Associative
Iterator model.
Notation
IR
An iterator_range type
f
An instance of First
l
An instance of Last
ir,
ir2
Instances of iterator_range
Semantics of an expression is defined only where it differs from, or is not defined in the implemented models.
|
Expression |
Semantics |
|---|---|
|
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Creates an |
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Copy constructs an |
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Assigns to a |
char const* s = "Ruby"; typedefvector<int, char, double, char const*> vector_type; vector_type vec(1, 'x', 3.3, s); typedefresult_of::begin<vector_type>::type A; typedefresult_of::end<vector_type>::type B; typedefresult_of::next<A>::type C; typedefresult_of::prior<B>::type D; C c(vec); D d(vec); iterator_range<C, D> range(c, d); std::cout << range << std::endl;