Re: [Boost-users] Bind, lambda and how to chain relative function calls

Kerner, Jacques wrote:

Hi,

I would like to create a functor for calling functions in a chain like this :

car.GetRigidBody().GetPosition().GetX()

What is the best way to do that using bind (and lambda ?)

The car.GetRigidBody() is easy : bind(&Car::GetRigidBody, &car) , but then I am a bit stuck. Note that I don't want to store the result of car.GetRigidBody(). I want the final functor to call all the functions everytime its operator() is called. So

bind ( &Position::GetX, &bind ( &RigidBody::GetPosition, &bind (

&Car::GetRigidBody, &car )() )() )

would not be acceptable...

Just drop the invocations: bind ( &Position::GetX, bind ( &RigidBody::GetPosition, bind( &Car::GetRigidBody, &car) ) )