LÖVE

anjo wrote: while inserting something in the middle means shifting everything afterward forward in memory

I also thought so, it`s the only reasonable explanation of such slowdown (assuming that tables acts like C arrays, in this situation at least)

anjo wrote: For more information on the internals of Lua, check out this PDF.

Thanks for reference ! This document can be handy sometimes

--- Double Post ---

Robin wrote: Exactly. I just wanted to make sure the science was right.

In principle you behave right, I`ve also in various experiments try to reject many factors
BTW, before I submited example to forum, I also tried various versions of test (with and without math.random). So maybe because of this your remark resulted in my anger

Robin wrote: You were right, 0x69.

Now I`m fully relaxed. Lets finish this question once and for all, peace