Lua Quick Start Guide

Returning multiple values

Lua has a unique feature that many traditional languages don't, multiple return values. This feature allows one function to return multiple values. To return multiple values, assign the result of the function to a list of variables separated by commas.

For example, you could write a function that takes a number for an argument and returns both the squared and cubed values of that number:

-- Declare the functionfunction SquareAndCube(x)  squared = x * x  cubed = x * x * x  return squared, cubedend-- Call the functions, c = SquareAndCube(2)print ("Squared: " .. s) -- will print: Squared: 4print ("Cubed: " .. c) -- will print: Cubed: 8

Like with function arguments, the number of values a function returns does not have ...