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  1. #include <iostream>
  2. #include "boost/variant.hpp"
  3.  
  4. struct A {};
  5. struct B {};
  6.  
  7. typedef boost::variant<A, B> AorB;
  8.  
  9. void foo(A&) { std::cout << "foo(A&)\n"; }
  10. void foo(B&) { std::cout << "foo(B&)\n"; }
  11.  
  12. int main()
  13. {
  14.   A a;
  15.   AorB c;
  16.   c = a;
  17.   foo(boost::get<A>(c));
  18.   try
  19.   {
  20.     foo(boost::get<B>(c));
  21.   }
  22.   catch(boost::bad_get& e)
  23.   {
  24.     std::cout << e.what();
  25.   }
  26. }
Success #stdin #stdout 0.01s 2904KB
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stdin
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Standard input is empty
stdout
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foo(A&)
boost::bad_get: failed value get using boost::get
https://ideone.com/rIoNc
language:
C++ (gcc 8.3)
created:
14 years ago
visibility:
public

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