Wouldn't it be better to use 'as' for guards? Seems more intuitive and
easier to type
let A as Number = 3;
let B as Email = "[email protected]";
class ListNode {
public nextNode as ListNode;
public value; // no guard
}
However, it is'nt a reserved keyword. But I don't think anybody sane would
use 'as' as a variable name. Additionnaly, we could also require 'use
guards' like we are going to require 'use fn'.
But the more I think about it, the more I think we should version
ECMAScript. It would give us much more freedom to innovate without worrying
about breaking compatibility. However, I don't want to restart a debate
about that: since it was already decided that it won't happen, it would
probably be a waste of time.
-----Message d'origine-----
From: Brendan Eich
Sent: Saturday, March 17, 2012 5:15 PM
To: Allen Wirfs-Brock
Cc: es-discuss
Subject: Re: Let's replace <| with :: (was Breaking up the <|...)
Allen Wirfs-Brock wrote:
I not recall why we haven't seriously considered :: as an alternative to
<|. It certainly eliminates all the typography issues.
Because we had agreed to reserve :: for guards:
http://wiki.ecmascript.org/doku.php?id=strawman:guards
/be
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