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Lua io library

Lua reference for lua io library.

Syntax

local file = assert(io.open("notes.txt", "w"))
file:write("Hello\n")
file:close()

Examples

Lua io library example

A focused example you can adapt while practising.

local file = assert(io.open("notes.txt", "w"))
file:write("Hello\n")
file:close()

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.

Runtime & versions

Lua interpreter or a host application. Feature availability depends on the language and runtime version used by your project; consult the official reference below.

Lua reference manuals

Specifications & further reading