Can i find values of variable in a table using a string?
Hello, random people on the internet. I've been trying to find a way to get a value of a variable using a string, how can i search thru a table. Find a variable named something, and take that value? Anything to point me in the right direction?
My modulescript:
local module = {}
local toolvalues = {
["Stick"] = 1;
["Bottle"] = 5;
}
local repstorage = game.ReplicatedStorage
function module.Activate(tool) -- "tool" is the string of the name
repstorage.Remotes.Gain:FireServer(--[[What can i put in here to find the values, so how can i find the name of a variable in a table, then grab the value?]])
end
return module
2 answers
You use keys. Keys can be almost anything--userdata, strings, numbers, and even booleans. However, you probably shouldn't rely on userdata for a key.
Keys aren't specifically for tables however, they're like fancy dot notation (dot notation being Part.Mesh.Scale).
You can use keys in such a way to index properties of an Instance:
local IN = Instance.new("Part");
IN["BrickColor"] = BrickColor.new("Toothpaste");
IN.Parent = workspace;
Or, you can use keys in a way to index an Instance's children:
local IN = Instance.new("Part");
local NewIN = Instance.new("Part", IN);
NewIN.Name = "New Instance";
IN.Parent = workspace;
print(IN['New Instance'].Size); --2, 4, 1 (or something like that)
To index a table using a key, you use the square brackets (note, SQUARE brackets, not parenthesis.)
For example:
Using a Key to make indices within a table:
local Table = {};
local value = "Hello, World!"
Table['key'] = value;
local MyValue = Table['key'];
Generating a table using hardcoded indices, then getting the value.
local Table = {
one = true;
two = false;
three = "three";
}
local OneValue, TwoValue, ThreeValue = Table['one'], Table['two'], Table['three'];
print(OneValue, TwoValue, ThreeValue) -->> true, false, three
Using keys within a table itself:
local Table = {
["Thwack"] = {
Damage = 45;
Description = "THWACK (nintendo please nerf hero i beg of you)";
};
["Whack"] = {
Damage = 25;
Description = "hero doesn't deserve this power"
}
["Inside of Party"] = true;
};
print(Table.Thwack, Table['Thwack']); -- table 0xMemoryAddress table 0xMemoryAddress
print(Table.Whack, Table['Whack']); -- table 0xMemoryAddress table 0xMemoryAddress
pcall(function()
print(Table.Inside Of Party) --errors
end);
print(Table["Inside of Party"]); --true
Resources
Be sure to look up resources to further develop your knowledge about tables. Tables are a major contender for one of the most useful basic abilities for a language.
Lua-Users: http://lua-users.org/wiki/TablesTutorial
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local value = toolvalues[string]
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