Reference: http://adriweb.free.fr/t3/2014/Advanced_TI-Nspire_Lua_Programming.pptx, p.6
“ Again, help Lua know more about the tables you're going to use! Avoid useless rehashes when possible! ”
-- 1 timeStart = timer.getMilliSecCounter() for i = 1, 500000 do local polyline = { -- ★★ {x = 10, y = 20}, {x = 15, y = 20}, {x = 30, y = 20} } end print("method 1 takes "..timer.getMilliSecCounter() - timeStart.." msec") -- 2 timeStart = timer.getMilliSecCounter() for i = 1, 500000 do local polyline = { -- ★★ {10, 20}, {15, 20}, {30, 20} } end print("method 2 takes "..timer.getMilliSecCounter() - timeStart.." msec") -- 3 timeStart = timer.getMilliSecCounter() for i = 1, 500000 do local polyline = { -- ★★ x = {10, 15, 30}, y = {20, 20, 20}, } end print("method 3 takes "..timer.getMilliSecCounter() - timeStart.." msec") -- 4 timeStart = timer.getMilliSecCounter() for i = 1, 500000 do local polyline = {10, 15, 30, 20, 20, 20} -- ★★ end print("method 4 takes "..timer.getMilliSecCounter() - timeStart.." msec")