On Tue, Sep 11, 2012 at 10:33 AM, Brendan Eich <[email protected]> wrote: > If you really want the Pythonic default parameter rules (evaluation in > definition context) then you need to address the bad case Jason showed: > > function foo(arg = []) { > arg.push('strange'); > return arg; > } > foo(); // ['strange'] > foo(); // ['strange', 'strange'] > > This is a side channel and a big footgun. ES6 default parameters as proposed > avoid it.
I agree that's terrible and should absolutely be avoided. Sorry for bringing it up. --tobie _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
