For relatively simple data, like small structs, you can use memoization to achieve immutability. Programming in Lua has a section on it. http://www.lua.org/pi

For relatively simple data, like small structs, you can use memoization to achieve immutability. Programming in Lua has a section on it. http://www.lua.org/pil/17.1.html http://www.lua.org/pil/17.1.html