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.

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

On Wed, Jul 23, 2014 at 12:04:52PM -0700, Ali Çehreli via Digitalmars-d wrote: [...]
> 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.
[...]

:-O

Arghhhh... my eyes are bleeding from this nasty syntax... :-(


T

-- 
This sentence is false.

On Wednesday, 23 July 2014 at 17:59:42 UTC, 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.

Fairly consistent with functional languages like F#, however.

(let x = Foo() in (Write x; x * x))

On Wednesday, 23 July 2014 at 19:04:52 UTC, Ali Çehreli wrote:
> 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

What in the hell is this? Is the { int i = 42; ... } block counted as a lambda or a scope? In that case, why is i still available outside the block in the `i < 100; i *= 2` expressions? I feel like my whole world has been turned upside down.

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