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Front Page / Sequences / Intrinsic Metafunctions / sequence_tag

sequence_tag

Synopsis

template<
      typename X
    >
struct sequence_tag
{
    typedef unspecified type;
};

Description

sequence_tag is a tag metafunctions for all tag dispatched intrinsic sequence operations.

Header

#include <boost/mpl/sequence_tag.hpp>

Parameters

Parameter Requirement Description
X Any type A type to obtain a sequence tag for.

Expression semantics

For any arbitrary type x:

typedef sequence_tag<x>::type tag;
Return type:A type.
Semantics:tag is an unspecified tag type for x.

Complexity

Amortized constant time.

See also

Intrinsic Metafunctions, Tag Dispatched Metafunction