STRUCT DEEP_COPY(3)

NAME
boost::proto::functional::deep_copy - A PolymorphicFunctionObject type for deep-copying Proto expression trees.

SYNOPSIS

// In header: <boost/proto/deep_copy.hpp>
struct deep_copy :  proto::callable {
  // member classes/structs/unions
  template<typename This, typename Expr>
  struct result<This(Expr)> :  result_of::deep_copy<Expr> {
  };
  // public member functions
  template<typename Expr>
    result_of::deep_copy<Expr>::type operator()(Expr const &) const;
};

DESCRIPTION

A PolymorphicFunctionObject type for deep-copying Proto expression trees. When a tree is deep-copied, all internal nodes and terminals held by reference are instead held by value. The only exception is function references, which continue to be held by reference.

  deep_copy public member functions

    1.

    template<typename Expr>
      result_of::deep_copy<Expr>::type operator()(Expr const & expr) const;
    Deep-copies a Proto expression tree, turning all nodes and terminals held by
                    reference into ones held by value..RE