Re: How to correctly spec sequences requiring an iterable from Tab Atkins Jr. on 2013-11-18 (public-script-coord@w3.org from October to December 2013)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Mon, 18 Nov 2013 10:45:51 -0800
To: Boris Zbarsky <bzbarsky@mit.edu>
Cc: Domenic Denicola <domenic@domenicdenicola.com>, "public-script-coord@w3.org" <public-script-coord@w3.org>
Message-ID: <CAAWBYDD5SyBSLVvdD2mu38OpKb0PBf2KJwLPpLD=tsBJkf3C-Q@mail.gmail.com>

On Mon, Nov 18, 2013 at 10:09 AM, Boris Zbarsky <bzbarsky@mit.edu> wrote:
> The performance cost of using the object-happy insanity that is
> IteratorStep/IteratorValue completely dwarfs the extra over an array here,
> as far as I can tell.  ;)

As noted in the threads about iterators, engines should be able to
optimize this away in common cases, like a for-of loop.

~TJ

Received on Monday, 18 November 2013 18:46:43 UTC