The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
class BoolString {
private:
std::string value;
public:
BoolString (std::string const& s)
: value(s) {
}
template<typename T = std::string>
T get() const { // get value (converted to T)
return value;
}
};