Lua -- unpack

unpack它接受一个数组(table)作为参数，并默认从下标1开始返回数组的所有元素

do
    arrayData = {"a","b","c","d","e"}
    print(arrayData) -- print the address of the arrayData 
    print(table.unpack(arrayData)) -- print all the elements of the arrayData
    print(table.unpack(arrayData, 2)) -- print the second to end elements of the arrayData
    print(table.unpack(arrayData, 1, 3)) -- print between first to third elements of the arrayData
end

注意：在Lua5.1中，unpack是全局函数，可以直接使用，但是在Lua5.2中，unpack被移到table.unpack，所以在Lua5.2以后要用table.unpack替代unpack。