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From: fst@mcgp1.UUCP (Skip Tavakkolian)
Newsgroups: comp.lang.c++
Subject: constructor() as ``new'' operand. Please explain
Keywords: new, constructors, c++
Message-ID: <1614@mcgp1.UUCP>
Date: 11 Oct 88 01:20:35 GMT
Article-I.D.: mcgp1.1614
Organization: Computer Tools Int'l Inc.
Lines: 30

I need an explanation on how to verbalize (visualize) use of a constructor
as an operand to new operator.  In section 5.4.3 of ``the C++ programming
language'' [B. Stroustrup, reprint July, 1987] you'll find the following:

class set
    {
    struct setmem
	{
	int mem;
	setmem *next;
	setmem(int m, setmem *n) { mem=m; next=n; }
	};
    setmem *first;
public:
    set()	{ first = 0; }
    insert(int m)	{ first = new setmem(m, first); }
    // ...
    };

There is no apparent return value from ``setmem'' constructor (i.e.
setmem(int, setmem*) ).  Where does the operand for new come from.
I believe this is correct, I am just trying to visualize how the compiler
interprets this.

Many Thanks
-- 
Fariborz ``Skip'' Tavakkolian
UUCP	...!uw-beaver!tikal!mcgp1!fst

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