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Function template operator<<

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


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);


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.

Copyright 2002, 2003 Eric Friedman, Itay Maman