can someone explain this because how in the initialization of "acc" its equal "acc or 1"

[silk abyss]

(yes i know im not supposed to just send a screenshot like that im sorry)

    acc = acc or 1
    if n == 0 then
        return acc
    else
        return factorial(n-1, n*acc)
    end
end
print(factorial(5))

https://youtu.be/n07w-eabLMw?si=1wV5Va807LNb8-MZ&t=2216 code is from this vid at 36:54

if possible can someone explain how it works

[silk abyss]

also this 😔 (how is there 3 values i only know 2, first is index 2nd is value but third??

[noble wolf]

@silk abyss

You can use a more complicated method to set variables based on certain conditions

[silk abyss]

a

[noble wolf]

In this script, he says

acc = acc or 1

which means if acc doesn’t have a value and is nil, acc becomes 1

[silk abyss]

OHH

wow thank you

[noble wolf]

There’s a similar one

It’s not in the example you sent but you can also use “and” in this context

acc = boolean and 1

If the boolean is true then acc becomes 1, otherwise it skips this line

Does anything else in the script confuse you?

[silk abyss]

acc isnt a factorial though ( i think i jus started learning lua yesterday)

i meant

boolean

[noble wolf]

factorial is the name of the function they are calling

[silk abyss]

yes osrry

i meant boolean

[noble wolf]

it’s not used here

it’s just another way you can set a variable

[silk abyss]

also in this thing i tired printing the "index" and it just crashed

[silk abyss]

ok thank you very much

[noble wolf]

it shouldn’t crash

[silk abyss]

what am i doing wrong

it did 💔

wait ill reopen and try again

[noble wolf]

oh here

[silk abyss]

ok it worked this time but

why did it output "key"

[noble wolf]

because you printed the index and not v

[silk abyss]

so 1 2 3 AND key are all indexes

[noble wolf]

well no and yes

[silk abyss]

with "value" as their value

[uncut pumice]

** You are now Level 2! **

[noble wolf]

no

[silk abyss]

damn

[noble wolf]

let me show you an example

[silk abyss]

😔

[noble wolf]

you can make your table

[silk abyss]

yes please

[noble wolf]

table = {2,9,1, something = “yes”}

the value of index 1 is 2 since it appears first

the value of index 2 is 9

and the value of index 3 is 1

[silk abyss]

okk

wha tbaout "something" and "yes"

[noble wolf]

the index of something just something and its value is yes

[uncut pumice]

** You are now Level 15! **

[noble wolf]

i don’t think it has a number but i could be wrong

but if you do
print(table.something) you’ll get “yes”

[silk abyss]

so something is an index with location or place in table of "something"

[noble wolf]

yes

[silk abyss]

bro

your explanation is genuinely so good i have no idea how you dont have a special role or something

im fr

thank you so much man

[noble wolf]

thank you

[silk abyss]

is it okay if i add you to ask questions 😋

[noble wolf]

yeah

[silk abyss]

yay

[silk abyss]

last question 🙏 🙏 🙏 🙏

how does

when it returns factorial(n-1,n*acc) where does it go to

or like

how does this part do

like i know it does 5x4x3x2x1

but how

[noble wolf]

So when you return a function, it basically just acts as a variable

the function itself can be an output so in this when you print factorial, it prints the product of the function since the product is what is returned

[silk abyss]

ohh