Hello everyone, I have been using properties quite extensively in my work. And these last days i have needed to combine properties numerous times. By that, i mean that i have n properties p1, p2, ... pn and what i use is get( p1, get( p2, get( ..., get( pn, object ) ... ) ) ) I would very much want to make a composite property p to be used like this : get( p, object ) (most of the time, n=2, but why stop there ? :-) ) I have to tried to find such functionality but in vain so far... Does it not exist ? Are there obstacles that i have not foreseen ? I am thinking of something like the following : template<class Prop1, class Prop2> struct composite_property { composite_property( Prop1 p1_, Prop2 p2_ ) : p1( p1_ ), p2( p2_ ) { } Prop1 p1; Prop2 p2; }; template<class Prop1, class Prop2> typename property_traits<Prop1>::reference get(composite_property<Prop1, Prop2> comp, typename property_traits<Prop2>::reference x ) { return get( comp.p1, get( comp.p2, x ) ); } How do you all feel about this ? I believe it would be very useful ! -- Benoît Casoetto