Multi-leveled table help?
So I have a table with multilevels of data, I'm trying to access the data in this table but it's giving me an this error.
14:16:11.859 - Players.Player1.PlayerGui.Screen.Main.Control:89: attempt to concatenate field '?' (a nil value) 14:16:11.860 - Stack Begin 14:16:11.860 - Script 'Players.Player1.PlayerGui.Screen.Main.Control', Line 89 14:16:11.860 - Stack End 14:17:58.465 - Auto-Saving...
Heres my table:
Upgrades = {
Cursor = {
ImageID = 12312414,
Name = "Cursor",
Cost = 15,
CPS = .1
}
}
And heres my code accessing the table
for i, v in pairs(Upgrades) do
local upgrade = game.ReplicatedStorage.Upgrade:Clone()
upgrade.Parent = gui.Main.Upgrades
--upgrade.Position = UDim2.new(0, 0, 0, (i - 1) * 75)
upgrade.ImageLabel.Image = "http://www.roblox.com/Asset?ID="..v[1] --this is line 89 right here
upgrade.UpgradeName.Value = v[2]
upgrade.Upgrades.Value = 0
upgrade.UpgradeCost.Value = v[3]
UpdateUpgrades()
end
TL;DR: How do I access data in a multileveled table?
1 answer
Your Problem
When indexing a table like table[index] then the 'index' is essentially the 'tag' of whatever index you're getting. By default.. 'tags' are in numerical order from least to greatest. But when you apply keys to tables like;
local tab = {
a = 1
}
Then the key overwrites the default tag. tab[1] is now nil, and can only be accessed by doing tab['a'] or tab.a
How To Fix
You need to either eradicate the custom key tags from your multi-leveled table or actually use them(lol)
Code
Upgrades = {
Cursor = {
ImageID = 12312414,
Name = "Cursor",
Cost = 15,
CPS = .1,
}
}
for i, v in pairs(Upgrades) do
local upgrade = game.ReplicatedStorage.Upgrade:Clone()
upgrade.Parent = gui.Main.Upgrades
--upgrade.Position = UDim2.new(0, 0, 0, (i - 1) * 75)
upgrade.ImageLabel.Image = "http://www.roblox.com/Asset?ID="..v.ImageID
upgrade.UpgradeName.Value = v.Name
upgrade.Upgrades.Value = 0
upgrade.UpgradeCost.Value = v.Cost
UpdateUpgrades()
end