boost::geometry::transform_variant< Sequence, Op, In > Struct Template Reference

Meta-function that takes a Sequence type, an MPL lambda expression and an optional Inserter 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< Sequence, Op, In >:

Collaboration diagram for boost::geometry::transform_variant< Sequence, Op, In >:

Public Types
typedef variant < detail::variant::over_sequence < mpl::transform< Sequence, Op, In >::type > >	type

Detailed Description

template<typename Sequence, typename Op, typename In = boost::mpl::na>
struct boost::geometry::transform_variant< Sequence, Op, In >

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

Example

typedef mpl::vector<int, float, long> types;
typedef transform_variant<types, 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< Sequence, Op, In >::type > > boost::make_variant_over< mpl::transform< Sequence, Op, In >::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