如何检查两个表(对象)在Lua中是否具有相同的值 [英] How to check if two tables(objects) have the same value in Lua

问题描述

我想在 Lua 中检查两个表是否具有相同的值，但没有找到方法.

I wanna check if two tables have the same value in Lua, but didn't find the way.

我使用运算符==，它似乎只是检查相同的对象，而不是表中的元素.

I use the operator ==, it seems just to check the same objects, but not the elements in the table.

如果我有两张桌子，

a={}
b={}

a==b 的值为 false.

但是如果

a={}
b=a

a==b 的值为 true.

我想知道是否有办法检查 Lua 中具有相同元素的两个表.是否有像 table.equals() 这样的内置函数来检查?

I wonder know if there a way to check two tables having the same elements in Lua. Is there a built-in function like table.equals() to check?

推荐答案

没有用于按内容比较表格的内置函数.

There is no built-in function for comparing tables by contents.

你必须自己写.您需要决定是要浅层还是深入地按内容比较表格.请参阅 https://web.archive.org/web/20131225070434/http://snippets.luacode.org/snippets/Deep_Comparison_of_Two_Values_3 一些想法.

You'll have to write your own. You'll need to decide whether you want to compare tables by contents shallowly or deeply. See https://web.archive.org/web/20131225070434/http://snippets.luacode.org/snippets/Deep_Comparison_of_Two_Values_3 for some ideas.

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