Returning a function inside another function

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#1

If you have 2 functions and one function inside the other, how can you return on the first one?

function a()

function b()

–return a?
end
end

I simply want to stop further execution of a.
I know there are some possible ways such as setting a variable and adding a conditional but is there a way to quickly return the first function?

1 Like
Functions question
#2

Not quite sure what you’re trying to ask, but if you want b to return a, you need to have a return something. For example:

function a()

    return (1 + 1)

end

function b()

    return a()

end

B is returning A, which returns 1+1. Calling b() would return 2.

#3

Im saying a function inside a function

#4

I would not recommend doing that. I guess if you really want to you can. What do you need it for?

#5

By all means, you won’t get an error. You may be confused if you do it though, with all the statements found.

#6

I want to stop further execution of the first function

#7

like this:

function a()
     local function b()
          return 1 + 1
     end

     b()
     return -- right after you call b in the function
end
#8

I meant doing it inside the second function and not using the first function

#9

I stated in my post:

function a()

function b()

–return a?
end
end

1 Like
#10

idk, doing that doesn’t really make sense unless you tell us what you need it for

#11

Im using Activated events and determining each button’s name then using the name to determine if further function execution is needed

#12

hmm, well i cant help you unless you show me exact the code you are using

#13

How is code going to help anything? I already showed in my post what I was asking for. I dont need help with my code, I need help with general scripting functions that utilizes a return of the first function within the second function

#14

what your asking for doesn’t make any sense. i need your code so i can fix your problem

#15

I’m assuming you mean something like this. Yes you can if it is.

local function a()
    return 4
end

local function b()
    return a -- "a" holds our function, so we can call it normally
end

local functionResult = b() -- a is returned, so we can do the following:
print(functionResult()) -- should print 4!

It’s like returning any other value, really.

#16

I want to do the equivalent of:

local a = false
function a()

function b()

if 5 > 2 then
a = true
end

end

if a then
return
end
end

But all within the second function

#17

there is no way to return out of a parent function from inside a child function, return only works in the function its called in

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#18

Let’s say we have functions a and b. Function b is nested within function a, and you want function b to be able to stop execution of function a. You can return a flag from function b to determine whether or not to return within function a.

Example:

local function a(): nil
    local function b(): boolean
        return true;
    end
    if b() then
        return;    --This will break out of a if b returns true
    end
    --Other stuff
end
6 Likes
#19

Seems like a good alternative solution, thanks for posting :smiley:

1 Like
#20

I know it’s been a year but what does it mean when you put the colon after the function?
Like when you did

local function a(): nil

what does “: nil” mean