Boost C++ Libraries

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This is an older version of Boost and was released in 2013. The current version is 1.89.0.

Struct template tag_of

Struct template tag_of

boost::proto::tag_of — A metafunction that returns the tag type of a Proto expression.

Synopsis

// In header: <boost/proto/traits.hpp>

template<typename Expr> 
struct tag_of {
  // types
  typedef typename Expr::proto_tag type;
};