104 lines
1.9 KiB
ReStructuredText
104 lines
1.9 KiB
ReStructuredText
.. Algorithms/Transformation Algorithms//copy |10
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copy
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====
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Synopsis
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--------
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.. parsed-literal::
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template<
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typename Sequence
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, typename In = |unspecified|
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>
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struct copy
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{
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typedef |unspecified| type;
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};
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Description
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-----------
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Returns a copy of the original sequence.
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|transformation algorithm disclaimer|
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Header
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------
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.. parsed-literal::
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#include <boost/mpl/copy.hpp>
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Model of
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--------
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|Reversible Algorithm|
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Parameters
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----------
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+---------------+---------------------------+-------------------------------+
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| Parameter | Requirement | Description |
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+===============+===========================+===============================+
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| ``Sequence`` | |Forward Sequence| | A sequence to copy. |
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+---------------+---------------------------+-------------------------------+
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| ``In`` | |Inserter| | An inserter. |
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+---------------+---------------------------+-------------------------------+
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Expression semantics
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--------------------
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|Semantics disclaimer...| |Reversible Algorithm|.
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For any |Forward Sequence| ``s``, and an |Inserter| ``in``:
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.. parsed-literal::
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typedef copy<s,in>::type r;
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:Return type:
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A type.
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:Semantics:
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Equivalent to
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.. parsed-literal::
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typedef fold< s,in::state,in::operation >::type r;
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Complexity
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----------
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Linear. Exactly ``size<s>::value`` applications of ``in::operation``.
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Example
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-------
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.. parsed-literal::
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typedef vector_c<int,0,1,2,3,4,5,6,7,8,9> numbers;
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typedef copy<
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range_c<int,10,20>
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, back_inserter< numbers >
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>::type result;
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BOOST_MPL_ASSERT_RELATION( size<result>::value, ==, 20 );
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BOOST_MPL_ASSERT(( equal< result,range_c<int,0,20> > ));
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See also
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--------
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|Transformation Algorithms|, |Reversible Algorithm|, |reverse_copy|, |copy_if|, |transform|
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