2008/12/15 Weed <resume...@mail.ru>: > Bill Baxter пишет: >> >> On Mon, Dec 15, 2008 at 3:35 PM, Weed <resume...@mail.ru> wrote: >>> >>> Who can provide a link to an explanation about why in D has taken to >>> distinguish between classes and structures? >>> >>> (Sorry for my bad English) >>> >> >> The main justification is eliminating the slicing problem. >> >> http://cplusplusgems.blogspot.com/2005/10/what-is-slicing-problem-class-base.html >> >> D solves it by making it impossible to have a class instance as a value >> type. >> > > > Why not disallow the casting for structs, leaving the possibility of up > casting for the links and pointers to the structure?
I have to confess I don't really understand this question. Can you rephrase or give an example? --bb
