Just out of curiosity - when is it a problem?

I'm formulating a treatise on why delete should be dropped for removing elements from AAs, and this is making it easier than I'd expected. ;)

"xs0" <xs0@xs0.com> wrote in message news:d0rrqh$1kk8$1@digitaldaemon.com...
> Just out of curiosity - when is it a problem?

Doesn't it have to be a reference or pointer to something allocated using 'new' (aside from the AA usage)? I'm not exactly sure what is 'delete'able and what isn't.

Matthew wrote:
[nothing but the topic]

I believe because the value is being written to. E.g. when it is a
pointer it gets nulled out.

[though that's probably not what Matthew wants to hear from me. i
apparently don't get the vague hint but seeing this Matthew might want
to explain something to dumbasses such as myself]

[I should have probably considered posting the whole message in the
subject line though]

-eye

So the reference can be nulled out. You won't have to write:

    delete p;
    p = null;

which is a common C++ idiom.

On Fri, 11 Mar 2005 13:23:04 -0800, Walter wrote:

> So the reference can be nulled out. You won't have to write:
> 
>     delete p;
>     p = null;
> 
> which is a common C++ idiom.

So would it be possible to change the D behaviour such that if the coder used a lvalue, D would null it out, otherwise if the coder did not use an lvalue then D would not attempt to null it out.

Also, this is the sort of thing that needs to be explicitly documented in the official docs.

-- 
Derek Parnell
Melbourne, Australia
12/03/2005 8:55:04 AM

"Walter" <newshound@digitalmars.com> wrote in message news:d0t3hr$h0a$1@digitaldaemon.com...
> So the reference can be nulled out. You won't have to write:
>
>    delete p;
>    p = null;
>
> which is a common C++ idiom.

Gotcha. (That just adds grist to my mill, however, ....)

:-)

In article <d0qrve$gm9$1@digitaldaemon.com>, Matthew says...
>
Matthew this may seem like a pretty dumb question, but what does RHS stand for? I'm thinking that it stands for "Right Hand Side."

Thanks in advance.

David L.

P.S. When I was in the U.S. Army we had a saying, that "The only dumb question, is the one that wasn't asked."

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