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40 lines
1.4 KiB
ReStructuredText
Executable File
40 lines
1.4 KiB
ReStructuredText
Executable File
* if ``C`` is convertible to ``std::input_iterator_tag`` or
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``C`` is convertible to ``std::output_iterator_tag``,
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``iterator_category`` is the same as ``C``.
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* Otherwise, if ``C`` is not convertible to
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``incrementable_traversal_tag``, the program is ill-formed
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* Otherwise:
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- ``iterator_category`` is convertible to the iterator
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category tag or tags given by the following algorithm, and
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not to any more-derived iterator category tag or tags::
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if (R is a reference type
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&& C is convertible to forward_traversal_tag)
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{
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if (C is convertible to random_access_traversal_tag)
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random_access_iterator_tag
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else if (C is convertible to bidirectional_traversal_tag)
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bidirectional_iterator_tag
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else
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forward_iterator_tag
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}
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else
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{
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if (C is convertible to single_pass_traversal_tag
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&& R is convertible to V)
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input_iterator_tag
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else
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C
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}
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- ``iterator_traversal<X>::type`` is convertible to the most
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derived traversal tag type to which ``C`` is also
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convertible, and not to any more-derived traversal tag type.
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.. Copyright David Abrahams 2004. Use, modification and distribution is
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.. subject to the Boost 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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