This is a central concept in writing good code. A function allows you to make a small piece of code which does one thing well and often can be reused if the same functionality is needed in multiple places. Functions apply a core design principal: /wiki/spaces/IXB/pages/3181903910.
Functions are Block statements.
Here’s an a simple example:
| Code Block |
|---|
function APPhello()
return "Hello";
end |
...
Arguments are variables which are used to pass data into a function. You can optionally define the function as local to limit its scope:
| Code Block | ||
|---|---|---|
| ||
function APPadd(a,b)
return a + b
end
local sum = APPadd(2,3) --returns 5 |
Notice in the above example, the function returned the resulting value.