Is this now illegal? As of v0.146 the compiler no longer allows it.

void main()
{
int[] a = new int[10], b = new int[10];
delete a, b; // 'var has no effect in expression (b)
}

On Sat, 11 Feb 2006 16:20:53 +1100, Dave <Dave_member@pathlink.com> wrote:

>
> Is this now illegal? As of v0.146 the compiler no longer allows it.
>
> void main()
> {
> int[] a = new int[10], b = new int[10];
> delete a, b; // 'var has no effect in expression (b)
> }

What made you think that the syntax for 'delete' was

   DeleteExpression :: 'delete' <identifier> (',' <identifier>)...

On the other hand, I can't find the formal definition of it anywhere in the D documentation.

-- 
Derek Parnell
Melbourne, Australia

"Dave" <Dave_member@pathlink.com> wrote in message news:dsjs7l$ai9$1@digitaldaemon.com...
>
> Is this now illegal? As of v0.146 the compiler no longer allows it.
>
> void main()
> {
> int[] a = new int[10], b = new int[10];
> delete a, b; // 'var has no effect in expression (b)
> }

Delete accepts only one parameter.  What's happening here is that delete binds more tightly than comma, so it's something like writing

delete a;
b;

And no-ops, such as "b;" have been made illegal (as they always have been in the spec but were never implemented).

In article <op.s4snk3k56b8z09@ginger.vic.bigpond.net.au>, Derek Parnell says...
>
>On Sat, 11 Feb 2006 16:20:53 +1100, Dave <Dave_member@pathlink.com> wrote:
>
>>
>> Is this now illegal? As of v0.146 the compiler no longer allows it.
>>
>> void main()
>> {
>> int[] a = new int[10], b = new int[10];
>> delete a, b; // 'var has no effect in expression (b)
>> }
>
>What made you think that the syntax for 'delete' was
>
>    DeleteExpression :: 'delete' <identifier> (',' <identifier>)...

C++, and because it worked up until v0.146.

>
>On the other hand, I can't find the formal definition of it anywhere in the D documentation.
>

In article <dsjudn$d09$1@digitaldaemon.com>, Jarrett Billingsley says...
>
>"Dave" <Dave_member@pathlink.com> wrote in message news:dsjs7l$ai9$1@digitaldaemon.com...
>>
>> Is this now illegal? As of v0.146 the compiler no longer allows it.
>>
>> void main()
>> {
>> int[] a = new int[10], b = new int[10];
>> delete a, b; // 'var has no effect in expression (b)
>> }
>
>Delete accepts only one parameter.  What's happening here is that delete binds more tightly than comma, so it's something like writing
>
>delete a;
>b;
>
>And no-ops, such as "b;" have been made illegal (as they always have been in the spec but were never implemented).
>

That would explain it.

Thanks,

- Dave

In article <dsjvfq$ecp$1@digitaldaemon.com>, Dave says...
>>What made you think that the syntax for 'delete' was
>>
>>    DeleteExpression :: 'delete' <identifier> (',' <identifier>)...
>
>C++, and because it worked up until v0.146.

Well, it never actuall worked in D, so it's a good thing dmd now complains about it. And are you sure it actually works in C++, or does it do the same thing? (I sincerely don't know.)

Nick

In article <dskgmo$1fdq$1@digitaldaemon.com>, Nick says...
>
>In article <dsjvfq$ecp$1@digitaldaemon.com>, Dave says...
>>>What made you think that the syntax for 'delete' was
>>>
>>>    DeleteExpression :: 'delete' <identifier> (',' <identifier>)...
>>
>>C++, and because it worked up until v0.146.
>
>Well, it never actuall worked in D, so it's a good thing dmd now complains about it. And are you sure it actually works in C++, or does it do the same thing? (I sincerely don't know.)
>
>Nick
>

No it doesn't work in C++ either.. Sorry, I've been stuck on stupid all week it seems. I'd like to think it's not permanent but others may disagree <g>

- Dave