purely virtual base class for market observables More...
#include <ql/quote.hpp>
Inheritance diagram for Quote:Public Member Functions | |
| virtual Real | value () const =0 |
| returns the current value | |
| virtual bool | isValid () const =0 |
| returns true if the Quote holds a valid value | |
Public Member Functions inherited from Observable | |
| Observable (const Observable &) | |
| Observable & | operator= (const Observable &) |
| void | notifyObservers () |
purely virtual base class for market observables