on Wed Aug 06 2008, Andrew Sutton <asutton-AT-cs.kent.edu> wrote:
I was wondering why put_get_helper shouldn't be three structs (put_helper, get_helper, put_get_helper, with the latter deriving from from the formers) instead of one? My rationale is outlined below along with the proposed code.
The put_get_helper is just something used internally to abbreviate the construction of lots of different property maps. However, building property maps is pretty trivial: it's just a structure with 1-3 operations and a couple of free functions. I don't really see the need for an expanded framework to help build them.
You might also consider that the BGL is fairly dated and stagnant, and in need of some serious TLC. Whether or not property maps continue to exist in the same form in future renditions of the library is anybody's guess - I'm leaning towards "no".
Hm, and what do you propose as an alternative? I can't see how we could do without them. I might like some trivial syntactic changes get(m, k) ==> m(k) put(m, k, v) ==> m(k,v) but that's about it. -- Dave Abrahams BoostPro Computing http://www.boostpro.com