ref: 2affc5101e7d0d2020e567c3f2704a962e17366c
dir: /lua/test/fibfor.lua/
-- example of for with generator functions function generatefib (n) return coroutine.wrap(function () local a,b = 1, 1 while a <= n do coroutine.yield(a) a, b = b, a+b end end) end for i in generatefib(1000) do print(i) end