Lua closures

Syntax

local function make_counter()
  local count = 0
  return function() count = count + 1; return count end
end

Examples

local function make_counter()
  local count = 0
  return function() count = count + 1; return count end
end

Best practices

• Start with the smallest working example, then adapt it to your project.
• Use the language’s standard library and idioms before introducing extra dependencies.

At a glance

Purpose

Lightweight scripting and embedding

File extension

.lua

Runs in

Lua interpreter or a host application

Usually used with

Host APIs and Lua modules

Specifications & further reading

• Lua reference manuals

Related Lua documentation