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friend ostream& operator<<( const ostream &outStream, const variable &theVariable)
{
return outStream<<(theVariable.Value());
}
template <class _Elem, class _Traits>
friend basic_ostream<_Elem, _Traits>& operator<<(const basic_ostream<_Elem, _Traits> &outStream, const variable &theVariable)
{
return outStream<<(theVariable.Value());
}