Vectors in Roblox Lua

-- Make vectors like in C++ in Lua! | @ohusq
local Vector = {}
Vector.__index = Vector

function Vector.new(expectedType)
    local self = setmetatable({}, Vector)
    self.data = {}
    self.expectedType = expectedType
    return self
end

function Vector:push_back(value)
    if type(value) == self.expectedType then
        table.insert(self.data, value)
    else
        error("Invalid data type")
    end
end

function Vector:size()
    return #self.data
end

function Vector:at(index)
    return self.data[index]
end

-- Example usage
local intVector = Vector.new("number")
intVector:push_back(1)
intVector:push_back(2)
-- intVector:push_back("Hello")

local strVector = Vector.new("string")
strVector:push_back("Hello")
strVector:push_back("World")
-- strVector:push_back(123)

print("Int Vector Size:", intVector:size())
print("String Vector Size:", strVector:size())