Xref: utzoo comp.lang.c++:4264 gnu.g++:322
Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!milano!hsinchu!knutson
From: knutson@hsinchu.sw.mcc.com (Jim Knutson)
Newsgroups: comp.lang.c++,gnu.g++
Subject: What's the diff?
Message-ID: <2731@hsinchu.sw.mcc.com>
Date: 4 Aug 89 03:32:05 GMT
Organization: MCC, Austin, TX
Lines: 31

What's the difference between the ++ operator overload functions in
these two examples?  The Lippman book (p. 197) prefers to define the
function type to return a reference to the class while the Pohl book
(p. 125) seems to prefer to return the class.  Both seem to work
equally well as both lvalue and rvalue.

class counter {
	int count;
public:
	counter() { count = 0; }
	counter(int c) { count = c; }
	counter& operator ++() { count++; return *this; }
	value() { return count; }
};

class counter {
	int count;
public:
	counter() { count = 0; }
	counter(int c) { count = c; }
	counter operator ++() { count++; return *this; }
	value() { return count; }
};

Jim Knutson
knutson@mcc.com
cs.utexas.edu!milano!knutson
-- 
Jim Knutson
knutson@mcc.com
cs.utexas.edu!milano!knutson