local list1, list2, list3, list4 = {}, {}, {}, {}
local count4 = 0
local table_insert = table.insert

function func1()
	table_insert(list1, 1)
end

function func2()
	table.insert(list2, 1) -- 顺便再关注一下local的效率差异
end

function func3()
	list3[#list3 + 1] = 1
end

function func4()
	count4 = count4 + 1
	list2[count4] = 1
end

local t = os.clock()
for i = 1, 10000000 do
	func1()
end
print("func1: " ,os.clock() - t)

t = os.clock()
for i = 1, 10000000 do
	func2()
end
print("func2: " ,os.clock() - t)

t = os.clock()
for i = 1, 10000000 do
	func3()
end
print("func3: " ,os.clock() - t)

t = os.clock()
for i = 1, 10000000 do
	func4()
end
print("func4: " ,os.clock() - t)


os.execute("PAUSE")