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From: kgorlen@sparkler.dcrt.nih.gov (Keith Gorlen)
Newsgroups: comp.lang.c++
Subject: Re: Typo in book by Keith Gorlen, et. al.  ?
Message-ID: <553@nih-csl.nih.gov>
Date: 12 Oct 90 16:23:29 GMT
References: <1990Oct11.175238.24917@tandem.com>
Sender: news@nih-csl.nih.gov
Reply-To: kgorlen@sparkler.dcrt.nih.gov (Keith Gorlen)
Lines: 29

In article <1990Oct11.175238.24917@tandem.com>,
chetan@wizard.DSG.Tandem.COM (Chetan Saiya) writes:
|>
|>Hi:
|>On page 146 (chpt. 8: Programming with the NIH Container Classes) of the book
|>Data Abstraction And Object Oriented Programming in C++, an example is given
|>for the "isKindOf()" function as follows :
|>
|>Point p(0,1);
|>if (p.isKindOf(*Point::desc()))  .... YES
|>if (p.isKindOf(*Object::desc())) ....  NO
|>...
|>
|>Shouldn't the last line say YES (or return TRUE), since Point is derived
|>from Object ?
|>
|>Thanks,
|>Chetan
 
You are correct, the comment is wrong.  It should read:

	if (p.isKindOf(*Object::desc()))  ...	// YES

Thanks for pointing this out.
               
	Keith Gorlen			phone: (301) 496-1111
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