To Detect players joining and leaving in a table, Would this work?

Help and Feedback Scripting Support
#1

Hello! I am currently trying to study the Tables in lua!

Would this work to detect players joining?

local MyAwesomeTable = {"PlaceHolder1"}

game.Players.PlayerAdded:Connect(function(player)
	table.insert(MyAwesomeTable[player])
end)


while true do
	print(MyAwesomeTable)
end
#2

When using table.insert, the first argument is the table, 2nd argument the index of the table where you want to place the item (usually it’s set by default to #list + 1, so you can leave it blank if you want), and the 3rd argument is the item you want to insert in the list.

local testTable = {}
table.insert(testTable, "hello") --I left the 2nd parameter blank, so it will be set to default

Also, it’s best to keep a task.wait() in your while loop so that studio won’t freeze.

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#3

Hello! Thank you for responding!

What is task.wait()? I have seen it and I don’t see a difference from using wait, Can you elaborate me on that please?

Also, it works now thanks!

#4

You’ll want to see the task.wait section of this post:

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#5

Thanks for the help! What other components do you think I should learn for scripting? : O

#6

Not really sure myself as I’m learning as well, probably CFrames & coroutines

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#7

Other way around, What other components should I learn for Tables?

#8 
local MyAwesomeTable = {"PlaceHolder1"}

game.Players.PlayerAdded:Connect(function(player)
	table.insert(MyAwesomeTable, player)
end)


for i, v in pairs(MyAwesomeTable) do
	print(v)
end

Learn iterator functions, they come hand in hand with tables.

2 Likes
#9

You’ll want to learn other functions for tables such as table.remove, table.create, etc. and also what @Limited_Unique said.

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#10

As the above post suggests, familiarise yourself with the other functions belonging to the table library too.

table.concat
table.find
table.remove
table.insert
etc.

1 Like
#11

Avoid using while wait() do loops as they are very deoptimized. Replace wait() with task.wait() for a performant code.

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#12

Why do you think this line of code wont work :thinking:

game.Players.PlayerAdded:Connect(function(player)
	table.insert(MyAwesomeTable, player)
	TextLabel.Text = TextLabel.Text + ", " tostring(player)
end)

Im trying to make it so that the players name will be listed on a 3D board and if more than one player, will list a “,” and then add another players name

#13

Use “..” to concatenate string values in Lua. “+” is the syntax for Python.

1 Like
#14

Seems like it works now, do I need to fix anything in this code to make it smaller and or fix it?

local MyAwesomeTable = {}

local TextLabel = script.Parent

game.Players.PlayerAdded:Connect(function(player)
	table.insert(MyAwesomeTable, player)
	TextLabel.Text = TextLabel.Text..", "..tostring(player)
end)


while true do
	task.wait()
	print(MyAwesomeTable)
end
#15 
local MyAwesomeTable = {}
local TextLabel = script.Parent

game.Players.PlayerAdded:Connect(function(player)
	table.insert(MyAwesomeTable, player)
	TextLabel.Text = TextLabel.Text..", "..tostring(player)
end)

while task.wait() do
	print(MyAwesomeTable)
end

Just a slight change but basically the same as yours, bare in mind when you print a table directly like that you’ll get something like this appear in console:

image

If you want to print the items inside of a table you need to traverse over the elements of the table, that can be done like how I did in my first reply to this thread.

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#16

Here is the place that this is in:

#17

Just asking, why is it that it prints all items in my array in dictionary form when I did something like this? Or does that only happen in output?

#18

Might be a console/output difference.

1 Like