The Comma Operator's Deprecation Can't Come Soon Enough

[Ali Çehreli via Digitalmars-d]

On 07/23/2014 12:04 PM, Ali Çehreli wrote:
> On 07/23/2014 10:59 AM, sigod wrote:
>> On Wednesday, 23 July 2014 at 17:25:43 UTC, Yota wrote:
>>> It appears Microsoft is musing the idea of adding this operator to C#
>>> and VB.Net.  Only instead of it being a comma, they're going with a
>>> semicolon.
>>> https://roslyn.codeplex.com/wikipage?title=Language%20Feature%20Status&referringTitle=Documentation
>>>
>>>
>>>
>>> I dislike the comma operator as well, but would there be any problems
>>> if it were a semicolon instead?  I think the new symbol would fit well
>>> in for() loops.
>>
>> `(var x = Foo(); Write(x); x * x)`
>>
>> Looks kinda strange.
>
> Reminds me... Is everybody aware of D's for syntax?
>
> import std.stdio;
>
> void main()
> {
>      for ( {
>              int i = 42;
>              double d = 1.5;
>              string s = "hello";
>          } i < 100; i *= 2) {
>
>          writefln("In the loop with %s %s %s", i, d, s);
>      }
> }
>
> :)
>
> Also note the absence of ; before the loop condition.
>
> Ali
>

And totally legal:

   http://dlang.org/statement.html#ForStatement

ForStatement:
     for ( Initialize Testopt ; Incrementopt ) ScopeStatement

Initialize:
     ;
     NoScopeNonEmptyStatement  <-- THIS

NoScopeNonEmptyStatement:
     NonEmptyStatement
     BlockStatement  <-- THIS

BlockStatement:
     { }
     { StatementList }  <-- THIS

Ali