How to check if two tables(objects) have the same value in Lua

lua, lua-table

Solution

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

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.

Problem

I wanna check if two tables have the same value in Lua, but didn't find the way. I use the operator `==`, it seems just to check the same objects, but not the elements in the table. If I have two tables, ``` a={} b={} ``` the value of `a==b` is `false`. but if ``` a={} b=a ``` the value of `a==b` is `true`. 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?

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