Disposable Class Template Reference
#include <ql/utilities/disposable.hpp>
Detailed Description
template<class T>
class QuantLib::Disposable< T >
generic disposable object with move semantics
This class can be used for returning a value by copy. It relies on the returned object exposing a swap(T&)
method through which the copy constructor and assignment operator are implemented, thus resulting in actual move semantics. Typical use of this class is along the following lines:
Disposable<Foo> bar(Integer i) { Foo f(i*2); return f; }
- Warning:
- In order to avoid copies in code such as shown above, the conversion from
T
toDisposable<T>
is destructive, i.e., it does not preserve the state of the original object. Therefore, it is necessary for the developer to avoid code such as
Disposable<Foo> bar(Foo& f) {
return f;
}
Disposable<Foo> bar(Foo& f) {
Foo temp = f;
return temp;
}
Public Member Functions | |
Disposable (T &t) | |
Disposable (const Disposable< T > &t) | |
Disposable< T > & | operator= (const Disposable< T > &t) |