just an idea (!! operator)

[deadalnix]

On 12/07/2012 19:32, Andrei Alexandrescu wrote:
> On 7/12/12 12:24 PM, Daniel Murphy wrote:
>> "Jonas Drewsen"<jdrewsen at nospam.com> wrote in message
>> news:zwtvliaunccmtwmabxfz at forum.dlang.org...
>>>
>>> auto a = foo ?? new Foo();
>>>
>>> is short for:
>>>
>>> auto a = foo is null ? new Foo() : foo;
>>>
>>> /Jonas
>>>
>>
>> Yeah, I've been planning to try and get this into D one day. Probably
>> something like:
>> (a ?: b) -> (auto __tmp = a, __tmp ? __tmp : b)
>
> gcc used to have that extension and they dropped it...
>
> Andrei
>

Do you know why ? It have been useful to me in languages that support it.