Should we deprecate comma?

[Steven Schveighoffer]

On Sun, 23 Mar 2014 22:31:25 -0400, Andrei Alexandrescu  
<SeeWebsiteForEmail at erdani.org> wrote:

> On 3/23/14, 7:21 PM, Kenji Hara wrote:
>> At least I can imagine two reasonable cases.
>>
>> 1. If the code is ported from C/C++, breaking it is not reasonable.
>>
>> 2. If the two expressions are strongly related, using comma operator is
>> reasonable to represent the intensity. I think rather it's an *ability*
>> to represent code meaning by using code style.
>>
>> Kenji Hara
>
> One concession we could make would be to disallow using the result of  
> the operator. That might actually catch all bugs discussed herein.
>
> if (condition) ++i, ++j; // fine
> foreach (e; exp1, exp2) {}   // ERROR
> if(pMgr->ShouldRecordEvent(eSE_Weapon), pOwnerRaw) // ERROR
> return pMgr->RecordEvent(eSE_Weapon), pOwnerRaw; // ERROR
>
> I think this would be a compromise worth looking into.

In fact, if this was the case, I would use the comma operator more. How  
many times I have to change:

if(cond)
    exp;

into

if(cond)
{
    exp;
    exp2;
}

Would be nice to just do:

if(cond)
    exp, exp2;

-Steve