Block lambda is cool, its syntax isn't

Brendan Eich brendan at
Sat Jan 21 11:54:32 PST 2012

> François REMY <mailto:fremycompany_pub at>
> January 21, 2012 1:47 AM
> (sorry, last mail was sent by mistake)

You sent your reply twice, to this thread and another. I replied to the 

> As a plus, it allows a very powerful optimisation (block-lambda 
> running in the same frame as the function itself).

That optimization is possible in any event, and optimizations are not 
semantics -- they are unobservable. What you are proposing is an 
unnecessary semantic restriction.



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