Why Ruby?

[Simen kjaeraas]

Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org> wrote:

>> And one consequence of that is that contrary to what has been said, this
>> would *not* allow foreach to be implemented as a library function.
>>
>> I can appreciate the difficulty of getting the delegate's flow control  
>> to be
>> handled as expected, but I think going ahead with this sugar without
>> addressing that in some way would be a mistake.
>
> Control flow inside the delegate can be addressed through a slightly  
> more complicated lowering (the kind foreach already does). Probably  
> break and continue should not be accepted because generally you can't  
> expect all user-defined constructs to do iteration. Early returns should  
> be easy to handle.

void foo( string delegate( int ) );

string bar( ) {
     foo( 3; ) {
         return "a"; // Does this return "a" to foo, or from bar?
     }
}

-- 
Simen