Function template operator<<

boost::operator<< — Provides streaming output for variant types.

Synopsis

template<typename ElemType, typename Traits, typename T1, typename T2, ..., 
         typename TN> 
  std::basic_ostream<ElemType,Traits> & 
  operator<<(std::basic_ostream<ElemType,Traits> & out, 
             const variant<T1, T2, ..., TN> & rhs);

Description

Requires:	Every bounded type of the `variant` must fulfill the requirements of the OutputStreamable concept.
Effects:	Calls `out << x`, where `x` is the content of `rhs`.