When and how to use metatables?

You can write your topic however you want, but you need to answer these questions:

  1. What do you want to achieve? Keep it simple and clear!
    I want to learn about metatables and when to use them.

  2. What is the issue? Include screenshots / videos if possible!
    I do not understand how to use it.

  3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
    I have looked on the developer hub, but still don’t get it.

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Excellent tutorial by starmaq:

Once you dive into OOP (Object-oriented programming), by JonByte:

Not just for objects, they allow you to extend the functionality of tables in all kinds of ways!

As always, the manual and Programming in Lua book are great resources:



LuaUsers also has lots of info, here’s a list of everything metatables “can do” (all metamethods):


You should also check the Roblox wiki, as there are some Roblox-specific (i.e. Luau) things to keep in mind: