That First Next Argument

Allen Wirfs-Brock allen at wirfs-brock.com
Fri Aug 22 09:23:27 PDT 2014


On Aug 22, 2014, at 7:22 AM, Kevin Smith wrote:

> 
> 
> Also, write your echo generator this way. You have to duplicate code.
> 
> 
> Ah, of course - thanks for reminding me. 
> 
> 
> Given something like:
> 
>     function *echo() input { while (true) yield input }
> 
> It seems like what we're trying to do is to emulate a contextual keyword using a weird "outside of the parameter list" parameter.  I suppose one ideal future-proof way forward would be to reserve an additional word inside of generators for this potential use in ES7+. 
> 
> Of course, everyone would have to agree on what that reserved word should be...
> 

and it could only be reserved in strict mode code.
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