Re: [boost] [Review] Boost Graphs Library (GGCL)

From: Beman Dawes (beman_at_[hidden])
Date: 2000-08-31 07:24:14

Beman:
 > 5.2 Property Accessor's return-by-value from get().  That is fine where 
a
 > small number of properties is involved.  But for some applications there 

 > will be a considerably larger number.  Of course, a pointer could be
 > stored, but that gets messy.  How about an additional get_ref() function 

 > (or maybe get_const_ref() in some concepts) which returns a
 > reference?  That makes using structs ever so much easier, without
 > impacting the return by value needs of other apps. (I wasn't following
 > the discussion last winter about property accessors; perhaps this
 > has already been discussed.)

Jeremy:

 > What you're looking for is the LvaluePropertyAccessor (5.2.4) which
 > defines an at() method that returns a reference.

I saw that, but was put off by the requirement that it be read/write.  What 
about the case where what is needed is "const value_type& at(pa, k) const"?

--Beman