C++ Classes interaction

Posted by Fabrice_CBA on
URL: http://quantlib.414.s1.nabble.com/C-Classes-interaction-tp5550.html

Hi all,

 

I apologize in advance for the "newbie" taste of my question.

I was digging in the market model code and found something of the form:

//////////////////////////////////////////////////////////////////////////////////

namespace QuantLib {

class CMSwapCurveState;

//! Drift computation for CMS market models

/*! Returns the drift \f$ \mu \Delta t \f$.

See Mark Joshi, <i>Rapid Computation of Drifts in a

Reduced Factor Libor Market Model</i>, Wilmott Magazine,

May 2003.

*/

class CMSMMDriftCalculator {

public:

...

///////////////////////////////////////////////////////////////////////////

I found that in many other classes.

Could someone explain me very quickly what does this "class CMSwapCurveState" syntax do? If it's a way for the two classes to interact with each other, why isn't the key word "friend" used?

Furthermore, this is done before the class definition, how does the compiler understand that they are linked?

If you could point me to a C++ tutorial that explains this, since I failed to find any explanation about this syntax.

 

Thanks,

Fabrice

 __________________________________________________
 Commonwealth Bank
 Fabrice Lecuyer 
 Quantitative Analyst
 Global Market & Treasury
 

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