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On Thursday 31 March 2011 17:28:12 Arvid Enbom wrote:
> Hello.
> Run this for some strange results:
> print(#{[1]=1,[2]=1,[4]=1,[8]=1,[16]=1,[32]=1,[64]=1,[128]=1})
> According to the Lua reference manual, the length operator (#) is supposed
> to return the highest consecutive numerical index. This means the above
> code SHOULD return 2, because 3 is nil.
> It returns 128.


"If the array has "holes" (that is, nil values between other non-nil values), 
then #t can be any of the indices that directly precedes a nil value (that is, 
it may consider any such nil value as the end of the array)."

Returning 128 is within specification (as well as returning 2 would be).

Jan Behrens