ES3.1 questions and issues

Tobie Langel tobie.langel at
Wed Mar 18 09:58:29 PDT 2009

On Mar 18, 2009, at 17:20 , Allen Wirfs-Brock wrote:

> Would it be useful if there was a way to determine whether nor not a  
> function was "built-in"?

That would be useful outside of the security concerns expressed by  
Mark. I'm thinking about performance and robustness concerns in JS  
libraries, for example.

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