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From: starr-page@CS.YALE.EDU (Page Starr)
Newsgroups: comp.lang.c++
Subject: Re: An array of objects again!
Message-ID: <15100@cs.yale.edu>
Date: 10 Feb 90 13:10:08 GMT
References: <1990Feb9.201223.14332@sdr.slb.com>
Sender: news@cs.yale.edu
Reply-To: starr-page@CS.YALE.EDU (Page Starr)
Organization: Yale University Computer Science Dept, New Haven CT  06520-2158
Lines: 24

>(2) array of objects
> Cell* pc = new Cell[N];      // null constructor.
> for (int i = 0; i < N; i++)
>   pc[i] = *(new Cell(i));    // constructor with some argument.
>
You could consider:
 (2.0) array of objects
   Cell* pc = new Cell[N];    // null constructor.
   for (int i = 0; i< N; i++)
     new (pc[i]) Cell(i);     // constructor with some argument.

I believe the syntax is correct, but am not positive.  This is known as
in-place initialization, and avoids the creation of temporaries.

-Page



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