Re: auto_ptr problem?: delete or delete[]

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1 total messages Started by Alexander Krotoff Sun, 21 Apr 1996 15:33

#4128

Author: Alexander Krotoff
Date: Sun, 21 Apr 1996 15:33

33 lines
1926 bytes

In article <199604181455.QAA12877@bredex.bredex.de> you wrote:
> In a tutorial a student asked a very good question i think:
> How can auto_ptr imagine which delete to use.
> Consider:
>  int* p = new int;
> and
>  int* p = new int[10];
> should result in different delete operations.
> But if I let auto_ptr do the job, how does it know
> which one to use?

Reading WP I was confused too. Really, we need auto_ptr for array
of objects more often, than auto_ptr for single object. In the last
case we are able to use simple auto object instead of dynamic
allocation and closely link allocated object with the automatic
object (of auto_ptr type).

Yes, I know there are several applications of auto_ptr which cannot
be solved just by auto objects...

Probably somebody from ANSI committee library WG may clean the situation.

--
Alexander N. Krotoff		krotoff@such.srcc.msu.su
Research Computer Center	tel: +7(095)939-2638
Moscow State University		fax: +7(095)939-4430

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