I thought it was Peter Deutsch who originally said "you can cheat if you don't get caught." regarding Smalltalk implementations
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:es-discuss- > [EMAIL PROTECTED] On Behalf Of Mark S. Miller > Sent: Tuesday, August 19, 2008 6:03 PM > To: Michael Daumling > Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; TC39; es3.x- > [EMAIL PROTECTED] > Subject: Re: Look Ma, no "this" (was: ECMAScript Harmony) > > On Tue, Aug 19, 2008 at 5:54 PM, Michael Daumling <[EMAIL PROTECTED]> > wrote: > > Just a side note: The code below would create three Function objects > per > > Point instance. Some may argue that the days of having little memory > are > > long gone, but we still have small devices plus a garbage collector > that > > may need to iterate through live objects, including three Function > > objects per Point. Long live prototype objects. > > Michael, I think you missed the note at the end of the message you're > quoting: > > > > [...] However, the > > above technique is impractical today because of the extra allocation > > cost -- one closure per method per instance. But as Dan Ingalls says > > "you can cheat if you don't get caught." The above desugaring shows > > how to define the *semantics* of the class construct. The actual > > behavior of the class construct must not be observably different from > > some such desugaring. But in a class-aware implementation, it should > > of course perform better than you'd expect from this desugaring. > > > > In the Caja project, we are exploring whether this optimization can > > even be provided as a source-to-source translation: > > <http://google- > caja.googlecode.com/svn/trunk/doc/html/cajitaOptimization > > /index.html>. > > It's not yet clear that the idea is practically implementable by this > > technique > > <http://groups.google.com/group/google-caja- > discuss/browse_thread/thread > > /df6c8ea9a1ca1aa3>. > > But none of these problems should impede a more directly implemented > > optimization. > _______________________________________________ > Es-discuss mailing list > Es-discuss@mozilla.org > https://mail.mozilla.org/listinfo/es-discuss _______________________________________________ Es-discuss mailing list Es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
