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How do I print a random value from a table?

Asked by

DeveloperSolo 370

8 years ago

So I made a table, and I'm trying to select a random one and make that a text for a gui but I don't know how to select a random one from the table

1Codes = {"Mickey", "Goofy", "Pete", "Sleeping beauty", "Snow White", "Donald Duck"}
2 
3Click.MouseButton1Click:connect(function()
4    Text.Text = "Getting your code, wait a second"
5    wait(1)
6    Text.Text = (Codes[Codes:random()]) --error
7end)

error: Workspace.KeyDoor.SurfaceGui.Frame.Script:12: attempt to call method 'random' (a nil value) any help?

1 answer

Answered by

buoyantair 123

8 years ago

Use this

1Codes = {"Mickey", "Goofy", "Pete", "Sleeping beauty", "Snow White", "Donald Duck"}
2 
3Click.MouseButton1Click:connect(function()
4    Text.Text = "Getting your code, wait a second"
5    wait(1)
6    Text.Text = Codes[math.random(1, #Codes)]
7end)

Explanation Ok, so basically, Your Goal ~ you have a series of objects/children in a table and now you want to select a random value

Normally we use math.random(indexstart, indexend) to get a random value from a given limit aka parameters, this function is pre-defined by ROBLOX and uses a certain algorithm to select randomly.

And, We know that we can access the elements of a table like this tablename[index]

Coming to your problem, We want to get a random number between 1(Since we start our index in tables from 1) and the number of elements present in the table (i.e the final index)

so what we can do is

`1`	`local` `tablename` `=` `{element1, element2, element3}`

`2`	`random_selection` `=` `tablename[math.random(1, #tablename)]` `-- Since #tablename will give us all the elements in a table`

Welp, Hope that helps! Sorry if I explained something incorrectly, if so feel free to correct me!

~ Eat caiks

Thanks. Just another question, how would I remove the string it selected? (Yes, I know, table.remove) like how to detect which one it is. DeveloperSolo 370 — 8y

You just need to set the random selection to nil like randomselection = nil buoyantair 123 — 8y

What do you mean? like Text.Text = Codes[math.random(nil, #Codes)] ? DeveloperSolo 370 — 8y

No, You need to set the value of the variable to nil, such as thisvriablevalueis = nil buoyantair 123 — 8y

How do I print a random value from a table?

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