Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!crdgw1!uunet!pdn!tscs!tct!chip
From: chip@tct.com (Chip Salzenberg)
Newsgroups: comp.lang.c++
Subject: Re: typesafe downward casting
Message-ID: <27FA1EC4.511C@tct.com>
Date: 3 Apr 91 18:28:20 GMT
References: <1991Mar30.161252.26129@kodak.kodak.com> <18.UUL1.3#8618@softrue.UUCP> <1991Apr2.161809.16952@kodak.kodak.com>
Organization: Teltronics/TCT, Sarasota, FL
Lines: 14

According to cok@islsun.Kodak.COM (David Cok):
>I would maintain ... that a good program generally has few casts and a
>good programming language allows most programs to be written without casts.

Indeed.  And that is true of C++ today -- IF you are willing to avoid
using Base* all over the place when Derived* is meant.  (Template
collections are a tremendous help.)

In other words, the way to regain an object's lost static type is not
to lose it in the first place.
-- 
Chip Salzenberg                    <chip@tct.com>, <uunet!pdn!tct!chip>
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