Lua only has one complex data-structure

Lua only has tables as it’s only complex data-structure.

A Lua table has a dual nature as both an array or hash table.

A Lua program is in fact just a Lua table which contains the functions for the program.

This makes Lua the most symmetric implementation of a scripting language in the world.

It’s what makes the language so small and fast and makes it possible to implement with such a small amount of code.