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If "company" is a local variable, you have its value on the stack. If it is global, you will need a table lookup to find it.

On Sun, Oct 11, 2020, 18:20 孙世龙 sunshilong <> wrote:
Hi, list

How many table accesses caused by this _expression_:

zip = company and company.director and
company.director.address and

As per the book(programming in Lua, 4th edition), the answer is 6.
For 0+1+2+3?

Why "company" does not perform a table access?
Could somebody shed some light on this question?

Best regards.