How do I find a value using another value from a dictionary in a script?

[DominoDominykas]

Hello! I’m trying to make it so in a script, if you have a value in this case a color3 value, it will find the name of the color in the dictionary. Example: Lets say you have a color3 value like 255, 0, 0, I’d like to find the name of it “Red” from the dictionary, how would I do that in a script?

-- Module script

local colors = {
	{colorname = "Red", colorvalue = Color3.fromRGB(255, 0, 0)},
	{colorname = "Green", colorvalue = Color3.fromRGB(0, 255, 0)},
	{colorname = "Blue", colorvalue = Color3.fromRGB(0, 0, 255)},
	{colorname = "Brown", colorvalue = Color3.fromRGB(175, 85,0)},
	{colorname = "White", colorvalue = Color3.fromRGB(255,255,255)},
	{colorname = "Black", colorvalue = Color3.fromRGB(0,0,0)},
	{colorname = "Yellow", colorvalue = Color3.fromRGB(255,255,0)},
	{colorname = "Pink", colorvalue = Color3.fromRGB(255,0,255)},
	{colorname = "Cyan", colorvalue = Color3.fromRGB(0, 255, 255)}
}

return colors

[WoTrox]

Loop through the dictionary and check if the value is (255, 0, 0). If it is, return its name.

[HugeCoolboy2007 (omega)]

The way you would handle that depends on the way your table is structured, but for your specific use-case, you would loop through the colors table and search for any value that matches what you’re looking for.

local function find(t, value)
   for _, v in t do -- loop through the provided table
       -- the underscore is the index of the inner-tables of the list
       -- the 'v' is the actual inner-table itself (i.e "{colorname = "Green"}")
       for _, data in v do -- this loops through the table that holds the colorname and color3 values
           -- 'data' is the value of each specific key listed in the 'v' table
           if data == value then -- this checks if the value of the key matches what you're looking for
               return v -- this returns the table that the key is in
           end
       end
   end
end

local info = find(colors, "Red") --> returns the table that has "Red" in it
print(info.colorname) --> prints "Red"