Scripting Helpers is winding down operations and is now read-only. More info→

Finding a relationship between two or more Tables? ROBLOX

Asked by

DaggerOf_Fly -24

5 years ago

Edited 5 years ago

Hello everyone I am trying to find a relationship between two tables and I am finding it very difficult.

The first table is a set of values which consist of primarily values that will be used for WalkSpeed.

local tab = {10,20,30,40,50}

The second table is a set of values which consist of values primarily for MaxHealth.

local tab2 = {5,10,15,20,25}

Is there a possible way of finding relationships between these two corresponding tables. Such as 10 and/or 20 appearing in both tables. Any help would be very much appreciated, thank you in advance.

I think you would still need a for loop of each table, unless you’re making your own so to speak, there’s no built in function for comparing tables by contents ABK2017 406 — 5y

I think you are referring to set operations which Lua doesn't have. You can always implement them yourself though. RayCurse 1518 — 5y

2 answers

Answered by

SummerEquinox 643

5 years ago

Edited 5 years ago

local Array1 = {10,20,30,40,50}
local Array2 = {5,10,15,20,25}

local ValuesInCommon = {}

for _,v in pairs(Array1) do
    for i = 1,#Array2 do
        if v == Array2[i] then
            ValuesInCommon[#ValuesInCommon + 1] = v
        end
    end
end

print(unpack(ValuesInCommon))

10 20

Here is why this works:

We start by creating an table to hold all values that are found to be in common. We then move into a for loop that will represent each Array value (v) separately. Because we are indexing each value separately - we can compare them one at a time to Array2, which is what the second for loop does. It will check if an Array1 value, v, is the same as any values from Array2, and if they are move them into the ValuesInCommon table.

Explain what you're doing. Simply giving code without an explanation is not helpful. User#19524 175 — 5y

Yeah - a relatively poor post on my end, fixing with an explanation now. SummerEquinox 643 — 5y

Why not use a `generic for` for the second table as well instead of using `Array[i]`? TheeDeathCaster 2368 — 5y

I mean you could - what is the benefit of doing this over what I have done above? Just cleaner and more linear code? SummerEquinox 643 — 5y

-2

Answered by

gullet 471

5 years ago

You'll need to define what you're looking for first, only then can you look for it.

Finding a relationship between two or more Tables? ROBLOX

2 answers

Answer this question