Hi Andreas,

Note that almost all implementations break for-in enumeration order for dense 
arrays, for some definition of dense.

This is understandable and very sensible.

If we try to specify something, implementors will probably object, and each 
implementation will have specific objections depending on their particular 
array and object representation.

Ugh. Tempting to randomise the order for non-dense objects, or just beat developers with the clue-bat until they stop writing code that depends upon a consistent order :)

Best regards,

Michael

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