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  1. #include <boost/fusion/adapted/struct/define_struct.hpp>
  2. #include <boost/mpl/contains.hpp>
  3.  
  4. BOOST_FUSION_DEFINE_STRUCT(
  5. 	(your_namespace), foo, 
  6. 	(int, a) 
  7. 	(char, c))
  8.  
  9. template<typename source_type, typename search_type>
  10. struct has_type
  11. {
  12. 	typedef typename boost::mpl::contains<source_type, search_type>::type value_type;
  13. 	static const bool value = value_type::value;
  14. };
  15.  
  16. #include <iostream>
  17.  
  18. int main()
  19. {
  20. 	bool foo_has_int_pointer = has_type<your_namespace::foo, int*>::value;
  21. 	bool foo_has_int = has_type<your_namespace::foo, int>::value;
  22.  
  23. 	std::cout << "foo_has_int_pointer: " << foo_has_int_pointer << "\n";
  24. 	std::cout << "foo_has_int: " << foo_has_int << "\n";
  25.  
  26. 	your_namespace::foo my_foo;
  27.  
  28. 	my_foo.a = 10;
  29. 	my_foo.c = 'x';
  30.  
  31. 	std::cout << "my_foo: " << my_foo.a << ", " << my_foo.c;
  32. }
Success #stdin #stdout 0s 3460KB
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stdin
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Standard input is empty
stdout
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foo_has_int_pointer: 0
foo_has_int: 1
my_foo: 10, x
https://ideone.com/f0Zc2M
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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