Lua 5.3 Reference Manual

The reference manual is the official definition of the Lua language.
For a complete introduction to Lua programming, see the book Programming in Lua.

Copyright © 2015–2018 Lua.org, PUC-Rio. Freely available under the terms of the Lua license.

Note: Certain elements of the Lua 5.3 Reference Manual have been omitted here if they do not pertain to the Lua implementation within Q-SYS.

Contents

• Introduction

• Basic Concepts
  • 1 – Values and Types
  • 2 – Environments and the Global Environment
  • 3 – Error Handling
  • 4 – Metatables and Metamethods
  • 5 – Garbage Collection
    • 5.1 – Garbage-Collection Metamethods
    • 5.2 – Weak Tables

• The Language
  • 1 – Lexical Conventions
  • 2 – Variables
  • 3 – Statements
    • 3.1 – Blocks
    • 3.2 – Chunks
    • 3.3 – Assignment
    • 3.4 – Control Structures
    • 3.5 – For Statement
    • 3.6 – Function Calls as Statements
    • 3.7 – Local Declarations
  • 4 – Expressions
    • 4.1 – Arithmetic Operators
    • 4.2 – Bitwise Operators
    • 4.3 – Coercions and Conversions
    • 4.4 – Relational Operators
    • 4.5 – Logical Operators
    • 4.6 – Concatenation
    • 4.7 – The Length Operator
    • 4.8 – Precedence
    • 4.9 – Table Constructors
    • 4.10 – Function Calls
    • 4.11 – Function Definitions
  • 5 – Visibility Rules

• Standard Libraries
  • 1 – Basic Functions
  • 2 – Modules
  • 3 – String Manipulation
    • 3.1 – Patterns
    • 3.2 – Format Strings for Pack and Unpack
  • 4 – UTF-8 Support
  • 5 – Table Manipulation
  • 6 – Mathematical Functions
  • 7 – Operating System Facilities

• Incompatibilities with the Previous Version
  • 1 – Changes in the Language
  • 2 – Changes in the Libraries

• The Complete Syntax of Lua

Index

Lua functions basic _G _VERSION assert collectgarbage error getmetatable ipairs load next pairs pcall print rawequal rawget rawlen rawset require select setmetatable tonumber tostring type xpcall math math.abs math.acos math.asin math.atan math.ceil math.cos math.deg math.exp math.floor math.fmod math.huge math.log math.max math.maxinteger math.min math.mininteger math.modf math.pi math.rad math.random math.randomseed math.sin math.sqrt math.tan math.tointeger math.type math.ult

os os.clock os.date os.difftime os.getenv os.time package package.loaded package.path package.preload package.searchers package.searchpath string string.byte string.char string.dump string.find string.format string.gmatch string.gsub string.len string.lower string.match string.pack string.packsize string.rep string.reverse string.sub string.unpack string.upper table table.concat table.insert table.move table.pack table.remove table.sort table.unpack utf8 utf8.char utf8.charpattern utf8.codepoint utf8.codes utf8.len utf8.offset

Last update: Tue Jun 26 13:27:21 -03 2018