ref: d73dd475b634fbfa7c9bd5dc161712e7514cb1e7
dir: /src/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