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array = {"Lua", "Tutorial"} function elementIterator (collection) local index = 0 local count = #collection -- 返回闭包函数 return function () index = index + 1 if index <= count then -- 返回迭代器的当前元素 return collection[index] end end end for element in elementIterator(array) do print(element) end
运行结果 :
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