[Webkit-unassigned] [Bug 26382] [ES5] Implement Function.prototype.bind

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26382





--- Comment #25 from Mark S. Miller <erights at gmail.com>  2011-04-01 07:06:20 PST ---
(In reply to comment #24)
> (In reply to comment #23)
> > ping
> > 
> > The lack of this is starting to cause compat issue.
> 
> Given that JS can be used to make a reasonably performant  implementation and most sites that use Function.prototype.bind  do actually start of with an existence check and then add the js impl this is not high priority.

JS can reasonably emulate the [[Call]] behavior of .bind() but not its [[Construct]] behavior. This is important because the [[Construct]] behavior of .bind() is the only way to implement a correct var-args construction (new) operation in ES5.

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