People always tell me you need to learn returning but IDK what for...
✓ ANSWER ACCEPTED
What is returning useful for?
2 answers
✓ Accepted answer
Basically the return command will take you out of the function immediately.
function eatCheese()
if 2+2=4 then
print("woohoo")
else
print("I hate life")
return --ends the function
end
print("function is also done") -- could also end here if 2+2=4 is true
end
If you specify an object, such as a boolean with return, it will return that boolean. So basically, it will also set the function equal to what you returned.
function eatPizza()
return true --returns the value true
end
if eatPizza() == true then --eatPizza() returns true, so it would work here
--content
end
returning in a function allows you to use the function like a value. Examples:
function mathstuff(x)
return 2*x + 5
end
print(mathstuff(3)) --Using the function as a value.
function equal(a, b)
return a == b
end
if equal(4, 2 + 2) then
print("2 + 2 = 4")
end
function a(text) --Declare a
return "MWA"..text --Add "MWA" to the beginning of "HAHAHA".
end
function b(text) --Declare b
return a(text:rep(3)) --Repeat "HA" 3 times (or twice, technically) and send to a
end
function c(text) --Declare c
return b(text:upper()) --Make "ha" uppercase, send it to b
end
print(c("ha")) --Call c, "text" in c is "ha"
--Returning nil, or just returning with nothing there,
--basically means you're cancelling out of the function.
--This lets us continue on in the script without errors.
function square(argument)
if type(argument) ~= "number" then
return --Return nothing, so we don't continue in the function.
else
return argument^2
end
end
print(square("hi")) --You can't square "hi".
print(square(5)) --You can square 5 though!
This discussion is preserved as it was. New answers, comments, and votes are closed.
5 comments
Also, you can't have another function right after a return, it won't execute.
It would be cool if it could though. I believe line two of your first script should be 2+2 == 4 as it would then be "is equal" to 4 (not on computer, can not check). Also the first script is missing a end and it would not be ran as it is never called. Line 5 of your second script, function is used to define a new function, so just remove it or else the script will through a error eatPizza() I woul
...would recommend to be in that if then statement.
Also, Returns are useful for Generic for loops.
Thanks M39, I didn't notice I declared the function again and forgot to end the first one >.<