boost::geometry::transform_variant< variant< BOOST_VARIANT_ENUM_PARAMS(T)>, Op, boost::mpl::na > Struct Template Reference

Meta-function that takes a boost::variant type and an MPL lambda expression and returns a variant type over the same types as the initial variant type, each transformed using the lambda expression. More...

#include <transform_variant.hpp>

Inheritance diagram for boost::geometry::transform_variant< variant< BOOST_VARIANT_ENUM_PARAMS(T)>, Op, boost::mpl::na >:

Collaboration diagram for boost::geometry::transform_variant< variant< BOOST_VARIANT_ENUM_PARAMS(T)>, Op, boost::mpl::na >:

Public Types
typedef variant < detail::variant::over_sequence < mpl::transform< variant < BOOST_VARIANT_ENUM_PARAMS(T)> ::types, Op >::type > >	type

Detailed Description

template<BOOST_VARIANT_ENUM_PARAMS(typename T), typename Op>
struct boost::geometry::transform_variant< variant< BOOST_VARIANT_ENUM_PARAMS(T)>, Op, boost::mpl::na >

Meta-function that takes a boost::variant type and an MPL lambda expression and returns a variant type over the same types as the initial variant type, each transformed using the lambda expression.

Example

typedef variant<int, float, long> variant_type;
typedef transform_variant<variant_type, add_pointer<_> > transformed;
typedef variant<int*, float*, long*> result;
BOOST_MPL_ASSERT(( equal<result, transformed> ));

Member Typedef Documentation

typedef variant< detail::variant::over_sequence< mpl::transform< variant< BOOST_VARIANT_ENUM_PARAMS(T)>::types, Op >::type > > boost::make_variant_over< mpl::transform< variant< BOOST_VARIANT_ENUM_PARAMS(T)>::types, Op >::type >::type

inherited

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The documentation for this struct was generated from the following file:

• boost_1_57_0/boost/geometry/util/transform_variant.hpp