JSIL and embind both need arguments.length for efficient method call dispatch when dealing with overloaded functions. Is it your intent that all such scenarios must now pay the cost of creating an array (to hold the rest arguments) and then destructuring it, for every call? At present it's possible to avoid this overhead in V8 and SpiderMonkey by using arguments.length + arguments[n] or by using arguments.length + patterned argument names.
On Sun, Nov 10, 2013 at 1:24 PM, David Bruant <[email protected]> wrote: > Le 10/11/2013 22:19, Brendan Eich a écrit : > > On Nov 10, 2013, at 9:12 PM, Andrea Giammarchi < >>> [email protected]> wrote: >>> >>> Not sure why this is so needed though. >>> >> Allen's posts make the case: webidl and varargs-style functions. Not all >> legacy. >> > WebIDL creates spec, not code. The language syntax doesn't need to evolve > for that. Allen showed that rest params+destructuring allows self-hosting > without |arguments| > Varargs functions have rest parameters. > > David > > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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