Lua Online Compiler

Run Lua scripts online with our lightweight Lua interpreter. Perfect for scripting, game development, embedded systems, and learning Lua programming.

lua Online Compiler

print("Hello, World!")
print("Welcome to Lua Online Compiler")

-- Variables
local language = "Lua"
local version = 5.4
local is_lightweight = true

print("Language: " .. language)
print("Version: " .. version)
print("Lightweight: " .. tostring(is_lightweight))

-- Tables (arrays and dictionaries)
local numbers = {1, 2, 3, 4, 5}
print("Numbers:")
for i, num in ipairs(numbers) do
    print("  [" .. i .. "] = " .. num)
end

-- Table as dictionary
local person = {
    name = "Developer",
    age = 27,
    language = "Lua"
}

print("Person: " .. person.name .. ", Age: " .. person.age)

-- Functions
function greet(name)
    return "Hello, " .. name .. "! Welcome to Lua programming."
end

local message = greet("Developer")
print(message)

-- Higher-order functions
function apply_operation(a, b, operation)
    return operation(a, b)
end

local add = function(x, y) return x + y end
local multiply = function(x, y) return x * y end

print("5 + 3 = " .. apply_operation(5, 3, add))
print("5 * 3 = " .. apply_operation(5, 3, multiply))

-- Loops
print("Squares:")
for i = 1, 5 do
    print(i .. "^2 = " .. (i * i))
end

-- String manipulation
local text = "Lua is awesome for scripting"
print("Original: " .. text)
print("Length: " .. string.len(text))
print("Uppercase: " .. string.upper(text))
print("Substring: " .. string.sub(text, 1, 3))

-- Pattern matching (Lua's regex-like feature)
local email = "developer@example.com"
local username = string.match(email, "([^@]+)")
print("Username from email: " .. username)

-- Metatables (Lua's way of OOP)
local Vector = {}
Vector.__index = Vector

function Vector.new(x, y)
    local self = setmetatable({}, Vector)
    self.x = x or 0
    self.y = y or 0
    return self
end

function Vector:magnitude()
    return math.sqrt(self.x^2 + self.y^2)
end

function Vector:__tostring()
    return "Vector(" .. self.x .. ", " .. self.y .. ")"
end

local v1 = Vector.new(3, 4)
print("Vector: " .. tostring(v1))
print("Magnitude: " .. v1:magnitude())

-- Coroutines
function fibonacci()
    local a, b = 0, 1
    while true do
        coroutine.yield(a)
        a, b = b, a + b
    end
end

local fib = coroutine.create(fibonacci)
print("First 8 Fibonacci numbers:")
for i = 1, 8 do
    local success, value = coroutine.resume(fib)
    print("  " .. value)
end

Output

Click "Run" to execute your code and see the output here...