Signature of main [was Sockets between D and C(++) app]

[Dicebot]

On Wednesday, 2 April 2014 at 08:55:23 UTC, Russel Winder wrote:
> On Wed, 2014-04-02 at 00:34 +0000, bearophile wrote:
>> Alexandre L.:
>
>> > int main(string[] args)
>> > {
>> 
>> If you don't need args, then I suggest to not put it as main 
>> argument. So probably this is better (note no int nor return, 
>> in D they are not needed):
>> 
>> void main() {
>> ...
>> }
>
> I am not convinced by this argument. The return value (aka exit 
> code) is
> always present, if you ignore this by having a void main, it 
> will return
> 0, i.e. main is not a void function even if you claim it is. As 
> for
> ignoring the parameters, this is making use of the fact that 
> main is the
> only function where you do not have to present the correct 
> signature.
> Perhaps this exception should be removed.
>
> The real signature of main in C/C++ is, I believe:
>
>         int main(int, char**, char**)
>
> what is the real signature in D?

D main != C main, latter is implemented in D runtime to call the 
former. 0 will be also returned by latter, not the former. Also 
exception will result in >0 status code even if return type is 
void. It effectively just says that you won't manage status code 
manually and allows runtime to take care of it.