[Arrow function syntax] Move Arrow to head to fixArrowFormalParameters issues

François REMY fremycompany_pub at yahoo.fr
Wed Jun 1 09:27:32 PDT 2011


I would propose :

return (
    fact@(n) (
        n<=1 ?
        1 :
        n*fact(n-1)
    )
);

Wouldn't that do the trick? I think that the @ char is not allowed in an 
identifier in ES5, which mean it would not introduce any compatibility 
issue.



-----Message d'origine----- 
From: Allen Wirfs-Brock
Sent: Wednesday, June 01, 2011 6:15 PM
To: Sean Eagan
Cc: es-discuss
Subject: Re: [Arrow function syntax] Move Arrow to head to 
fixArrowFormalParameters issues

one thing that stands out in your proposal is that there doesn't appear to 
be any way to write a recursive arrow function.

Here is one way it might be done:

higher(->: fact (n) n<=1?1:n*fact(n-1));

or possibly

higher(->@ fact (n) n<=1?1:n*fact(n-1));

(in either case the 3 character arrow sequence would be one token)

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