On 11/23/10 11:12, Brendan Eich wrote:
   for (k in keys(o)) ...
   for (v in values(o)) ...
   for ([k, v] in properties(o)) ...

What are "keys", "values", and "properties" here?  Global functions?  How would 
a new object abstraction T customize them just for instances of T?

    Waldemar
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