C++::Boost::Variant::get( )
Description - To display the stored values of the
boost::variant variable, use the free-standing function boost::get() .boost::get() expects one of the valid types for the corresponding variable as a template parameter.
Features of Boost::get( ) Function:
Specifying an invalid type will result in a run-time error because validation of types does not take place at compile time.
Variables of type boost::variant can be written to streams such as the standard output stream, bypassing the hazard of run-time errors
Code:
int main()
{
boost::variant<double, char, std::string> v;
v = 3.14;
std::cout << boost::get<double>(v) << '\n';
v = 'A';
std::cout << boost::get<char>(v) << '\n';
v = "Boost";
std::cout << boost::get<std::string>(v) << '\n';
}
Output
14.5
Z
Boost::get() function
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