LUA 通过例子了解三种循环

--[[
for test

]]--

--[[local _a1 = {20, 1, key1 = "hello", key2 = "world", lang = "lua"}

  print("the table _a1:")

  for _,v in pairs(_a1) do

      print(v)

  end

]]--

  --for i=10,1,-1 do print(i) end

  --for i=10,1 do print(i) end

  --[[

  --complex for with function

  function f(x)

    print("function")

    return x*2

  end

  for i=1,f(5) do print(i)

  end

  ]]--

  --[[ipairs是Lua提供的一个迭代器函数，用来迭代数组。]]--

  days = {"Suanday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"}

  for i,v in ipairs(days) do  print(v) end