More fun with undefined

T.J. Crowder tj at
Fri Jun 15 04:46:09 PDT 2012

On 15 June 2012 12:41, Brendan Eich <brendan at> wrote:

> This isn't unrelated. If we do get patterns into Harmony they may subsume
> some of the postfix-?? (which does not work syntactically, IMHO) or
> prefix-? ideas. Or at least prefix-? may show up in the pattern language
> (dherman and I have discussed it).

I was talking about the discussion around making undefined non-redefinable.
Of the first 6 responses, one was about the original subject (having a
unary version of ??), the others were about whether undefined should be
redefinable. Different (and potentially useful) topic, in my view. Allen
even opened with "This is a different issue, but..."

-- T.J.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the es-discuss mailing list