下标从1开始
最后更新于:2022-04-01 02:17:41
# 下标从1开始
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在_lua_中,数组下标从1开始计数。
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官方:Lua lists have a base index of 1 because it was thought to be most friendly for non-programmers, as it makes indices correspond to ordinal element positions.
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在初始化一个数组的时候,若不显式地用键值对方式赋值,则会默认用数字作为下标,从1开始。由于在_lua_内部实际采用哈希表和数组分别保存键值对、普通值,所以不推荐混合使用这两种赋值方式。
~~~
local color={first="red", "blue", third="green", "yellow"}
print(color["first"]) --> output: red
print(color[1]) --> output: blue
print(color["third"]) --> output: green
print(color[2]) --> output: yellow
print(color[3]) --> output: nil
~~~