I saw alot of post but I still dont get what does return do. I have a rough idea , is it for checking the script.
Lets say this is the script. Is returned used to check the "-- Script" if it works?
local function test()
print("start")
-- Script
return "check"
end
local a = test()
print(a)
Formally, the definition of the return keyword is "a statement that tells the program to leave the subroutine and return to the return address". Essentially, if we wish to return a result from a computation or various other scenarios that is concluded from a function, we use this keyword to define what we wish to give. See this example of it's potential applications:
local numberA = 5
local numberB = 2
local function multiplyNumbers(a,b)
return a * b
end
local result = multiplyNumbers(numberA, numberB)
This will return the multiplication of parameters A and B to wherever this function—or the fancy term "subroutine"—was called, as aforementioned above. To break this down, this is what's occuring:
local result = a * b
local result = 10
An easy way to grasp return, is to see is as the "give back" keyword. Before I finish, let's see another example:
local hello, world = "Hello", "world!"
local function concatenateStrings(a,b)
return tostring(a..' '..b)
end
print(concatenateStrings(hello, world)) --> 'Hello world!'
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2 comments
Thank you so much I get what you mean but what is sub routine?
A subroutine is the formal definition of a "function".