How do I add indexes together

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#1

I want to add all of the indexes together, without rewriting the code every time I add something new.

It prints 15 times 1

image

local t = {
v
}
for key,value in pairs(t) do
key = num
print(key)
end

#2

I am a little bit confused by what you mean, but heres my best interpretation of what you mean?

local array = {31,32,33,34,35,36}
local num = 0

for i,v in pairs(array) do
   num += i
end

print(num) -- outputs 21

Hopefully this helps, if not please clarify a little bit better about what you mean.

1 Like
#3

@anythingoliver Hi I could have just printed the indexes got 15 and inserted 15 into a variable.
But that’s not how games work at least the good ones, I need efficient code so that I won’t rewrite every single script.

I need to add all of the indexes together in order to make this work.

#4

Thank you for at least replying to my post, most people scroll down.

#5

I’m still confused by what you mean “add all the indexes together in order to make this work”.

#6

can’t you just add a break after the key = num ?

#7

It prints 1 (x15)

how do I add all of them

#8

Thanks for reply, I tried break but that’s not the case everything prints perfectly if I break it then it will stop that’s not the reason.

#9

If I understand correctly, you want something like this?

local YourTable = {"1", "2", "5", "5"}
local TrackNumbers = {} 

for _, value in ipairs(YourTable) do
    if not TrackNumbers[value] then
        print(value)
        TrackNumbers[value] = true
    end
end
#10

Why not just get the number of items in the array? You can do #Array to return the number of items inside the array.

#11

Same thing like table right?
I mean the script thingy.

prints 1 (15x)

#12

Well, if you do print(#t) you will get 15 printed according to the code you provided.

#13

Error

#14

Current status

#15

To be honest I have no idea what you’re trying to acomplish, so some more details would be much appreciated (Like the actual table you’re trying to do this on, an example, etc)

But looking at the title, you can do this like so:

local total = 0
local testTable = {
	"fun",
	"fun2",
	"fun3",
	"fun4",
	"fun5"
}

for key, value in pairs(testTable) do
	total += key
end

print(#testTable) -- This prints out the total number of entries in the table (5)
print(total) -- This prints out the sum of every entry (15)

If this doesn’t work, then whatever you’re trying to achieve might not be possible.

#16

What do you mean by this?‍‍‍‍‍‍‍‍‍

#17

Instead of looping through, just take your Table Variable and prefix it with “#”.

Example:

local MyTable = {
   "Hello",
   "AnotherString"
}

print(#MyTable)
-- prints 2

If you add a new thing to the table, it will continue to go up in numbers. Note this only works if your indexes start at 1 and are in order.

#18

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