none

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A metafunction returning the result type of none.

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template<
    typename Sequence,
    typename F
    >
struct none
{
    typedef bool type;
};

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Table 1.48. Parameters

=======

Table 1.48. Parameters

=======

Table 1.52. Parameters

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Table 1.52. Parameters

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Table 1.52. Parameters

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Table 1.52. Parameters

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Table 1.52. Parameters

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>>>>>>> .merge-right.r57125

Parameter	Requirement	Description
`Sequence`	A model of Forward Sequence	Operation's argument
`F`	A model of unary Polymorphic Function Object	Operation's argument

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Expression =======

Expression >>>>>>> .merge-right.r57125 Semantics

result_of::none<Sequence, F>::type

Return type: bool.

Semantics: Returns the return type of none given a sequence of type Sequence and a unary Polymorphic Function Object of type F. The return type is always bool.

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Constant.

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#include <boost/fusion/algorithm/query/none.hpp>
#include <boost/fusion/include/none.hpp>