From: garcia (garcia_at_[hidden])
Date: 2003-12-06 11:32:18
Douglas Gregor wrote:
>Today I (again) ran into an instance where I had a property map but really
>wanted a function object. The code I wanted to write was:
>
> std::vector<vertex_descriptor> reversed_order(num_vertices(rdg));
> depth_first_search(rdg,
> boost::visitor(
> make_dfsnum_visitor(reversed_order.begin())));
> return transform(reverse_order.rbegin(), reverse_order.rend(),
> out, get(symbol_tag(), rdg));
>
>get(symbol_tag(), rdg) returns a property map now, so this code is ill-formed.
>At the moment I either have to wrap the property map (yuck) or just fall back
>to a hand-coded loop (also yuck).
>
>Would anyone object if I made property maps into function objects? Any
>downsides?
>
>
>
Are you suggesting changing the interface specified by the concepts in
the property map library, specifically, the LValuePropertyMap?
ron