Lua Functions Calling a function.


Functions are only useful if we can call them. To call a function the following syntax is used:

print("Hello, World!")

We're calling the print function. Using the argument "Hello, World". As is obvious, this will print Hello, World to the output stream. The returned value is accessible, just like any other variable would be.

local added = add(10, 50) -- 60

Variables are also accepted in a function's parameters.

local a = 10
local b = 60

local c = add(a, b)


Functions expecting a table or a string can be called with a neat syntactic sugar: parentheses surrounding the call can be omitted.

print"Hello, world!"
for k, v in pairs{"Hello, world!"} do print(k, v) end