Functions can carry out a procedure or compute and return values. We can make a function call as a statement, or we can use it as an expression. You can also use object methods as functions. You have learned that functions can be variables. A table can use these variables to store them as properties.
Functions are the most important means of abstraction in Lua. One function that we have used many times is print. In the following example, the print function is being told to execute one piece of data—the "My favorite number is 8" string:
print("My favorite number is 8") -- My favorite number is 8Another way of saying this is that print is being called with one argument. The print function is only one of the many built-in functions that Lua has, but almost any program you write will involve you defining your own functions.
