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QuantLib_Disposable
Langue: en
Version: 382684 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
NAME
QuantLib::Disposable -generic disposable object with move semantics
SYNOPSIS
#include <ql/utilities/disposable.hpp>
Inherits T.
Public Member Functions
Disposable (T &t)
Disposable (const Disposable< T > &t)
Disposable< T > & operator= (const Disposable< T > &t)
Detailed Description
template<class T> class QuantLib::Disposable< T >
generic disposable object with move semanticsThis 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 to Disposable<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; }
which would likely render the passed object unusable. The correct way to obtain the desired behavior would be:
Disposable<Foo> bar(Foo& f) { Foo temp = f; return temp; }
Author
Generated automatically by Doxygen for QuantLib from the source code.
Contenus ©2006-2024 Benjamin Poulain
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