transform_view presents a transformed view of its underlying sequence given a unary Polymorphic Function Object. The transform_view inherits the traversal characteristics (see Sequence Traversal Concept) of its underlying sequence.

Header

#include <boost/fusion/sequence/view/transform_view.hpp>

Synopsis

Unary Version

template <typename Sequence, typename F>
struct transform_view;

Binary Version

template <typename Sequence1, typename Sequence2, typename F>
struct transform_view;

Template parameters

Model of

Expression Semantics

Semantics of an expression is defined only where it differs from, or is not defined in Forward Sequence, Bidirectional Sequence or Random Access Sequence depending on the traversal characteristics (see Sequence Traversal Concept) of its underlying sequence.

Example

struct square
{
    template <typename T>
    struct result
    {
        typedef T type;
    };

    template <typename T>
    T operator()(T x) const
    {
        return x * x;
    }
};

typedef vector<int, short, double> vector_type;
vector_type vec(2, 5, 3.3);

transform_view<vector_type, square> transform(vec, square());
std::cout << transform << std::endl;