Lua

Tutorials

Fun with Lua
Lua: the world's most infuriating language
Learn Lua in 15 Minutes
Learn Lua in 15 minutes | Corona Labs
Programming in Lua (1st Edition) for Lua 5.0; 2nd Edition for 5.1; 3rd Edition for 5.2；4th Edition for 5.3

LewisJEllis/awesome-lua: A curated list of quality Lua packages and resources.
mysandbox/lua at master · arch-jslin/mysandbox
pkulchenko/ZeroBraneEduPack: A collection of simple lessons, scripts, and demos in Lua, suitable for learning programming concepts.

Intro to Programming in Lua - YouTube
Learning Lua - YouTube

Leafo

He's the one behind LuaRocks, MoonScript, Lapis.

leafo's Guides
Using PostgreSQL with OpenResty leafo/pgmoon: A pure Lua Postgres driver for use in OpenResty & more
An introduction to Parsing Expression Grammars with LPeg lpeg

LuaJIT

LuaJIT is faster then v8. However it conforms only to Lua 5.1 spec (not the latest) and its standard library, supports some Lua 5.2 features as extensions. Support for Lua 5.2 and 5.3 is a huge task.

For those that think that LuaJIT's 5.1 compatibility isn't too far behind 5.3, be aware that Lua changes a lot in its minor versions.
To give you an idea, 5.2 introduced changed how scope works (both some stuff with lexical/global scope, and by redoing environments), introduced the goto statement, finalisers, and changed how break works.
5.3 introduced integers (Lua was previously like Javascript with only one Number type which was backed by a double), and utf8 support.
This means that upgrading a Lua version can be a big deal and break all of the programs written in it. For instance, redis and WoW both still embed 5.1.

The LuaJIT Project
mkottman/AndroLua
luapower - The LuaJIT distribution for Windows, Linux and OS X

bobsayshilol/luajit-decomp: LuaJIT decompiler

Embedding LuaJIT in 30 minutes (or so) | The CZ.NIC Staff Blog

Clue

ClueLang/Clue: C/Rust like programming language that compiles into Lua code
Home · ClueLang/Clue Wiki
Clue Online stub

MoonScript

MoonScript, a language that compiles to Lua
MoonScript Online Compiler
Language Guide - MoonScript 0.4.0

Overview of Differences & Highlights

Whitespace sensitive blocks defined by indenting
All variable declarations are local by default
export keyword to declare global variables, import keyword to make local
copies of values from a table
Parentheses are optional for function calls, similar to Ruby
Fat arrow, =>, can be used to create a function with a self argument
@ can be prefixed in front of a name to refer to that name in self
! operator can be used to call a function with no arguments
Implicit return on functions based on the type of last statement
: is used to separate key and value in table literals instead of =
Newlines can be used as table literal entry delimiters in addition to ,
\ is used to call a method on an object instead of :
+=, -=, /=, *=, %=, ..= operators
!= is an alias for ~=
Table comprehensions, with convenient slicing and iterator syntax
Lines can be decorated with for loops and if statements at the end of the line
If statements can be used as expressions
Class system with inheritance based on metatable's __index property
Constructor arguments can begin with @ to cause them to automatically be
assigned to the object
Magic super function which maps to super class method of same name in a
class method
with statement lets you access anonymous object with short syntax

An in-depth look into the MoonScript class implementation

eLua

eLua - eluaproject for micro-controllers
eLua Project on GitHub

Tools

how to create executables (without lua dependency)?
Luarock's build system (rockspec)?

amalg.lua dependency bundler
Squish [Matthew Wild] dependency bundler, minifier and compiler
lua-users wiki: Bin To Cee
L-Bia Home but it says it doesn't do that
stevedonovan/luabuild: A highly customizable Lua 5.2 build system, allowing for common external modules to be linked in statically, and built-in modules to be excluded http://lua-users.org/lists/lua-l/2012-04/msg00639.html

Luiz Henrique de Figueiredo: Libraries and tools for Lua !important
example of distributed Lua tools, srlua
Lua Toolbox
leafo/moonscrape: web scraper

Embedding Lua

Lua itself is designed to be an "embedded language". Embedding the Lua Runtime to a C program is one of it's use case.

It is used in VLC, Adode Photoshop, Adode Lightroom, World of Warcraft, AwesomeWM
A stripped console-only Lua CLI for use with shell scripts - The VideoLAN Forums

Nginx

nginx.md#openresty

Lua + Nginx = magic

Bindings

LuaJIT provides an easy(-er) to use Foreign Function Interface.
FFI Library
Introduction to LuaJIT & How to bind CPP code base using LuaJIT FFI // Speaker Deck

FFI is also backported to Lua.
jmckaskill/luaffi: Standalone FFI library for calling C functions from lua. Compatible with the luajit FFI interface.

kyren/rlua: High level Lua bindings to Rust

IDE

ZeroBrane Studio - Lua IDE/editor/debugger for Windows, Mac OSX, and Linux

LuaRocks

LuaRocks - The Lua package manager
luarocks documentation (API)
Documentation · keplerproject/luarocks Wiki
Using LuaRocks · keplerproject/luarocks Wiki
~/.luarocks/config.<version>

LuaRocks is implemented upon Lua's package and require mechanism.

paths

Using LuaRocks to install packages in the current directory
Rocks are installed to:

/usr/share/lua/<version>/ (system rock tree)
~/.luarocks with --local
Adding LuaRocks' LUA_PATH and LUA_CPATH to your environment:

eval $(luarocks path --bin)
lua -e 'print(package.path)'
lua -e 'print(package.cpath)'

Add this to ~/.luarocks/config.lua to make this the default:
local_by_default=true

custom rock tree with --tree ./lua_modules to install to local folder

-- modules_path.lua
local version = _VERSION:match("%d+%.%d+")
package.path = 'lua_modules/share/lua/' .. version .. '/?.lua;lua_modules/share/lua/' .. version .. '/?/init.lua' .. package.path
package.cpath = 'lua_modules/lib/lua/' .. version .. '/?.so' .. package.path

the question mark is used to interpolate the package name
mimic $(luarocks path)

Rocks

A rock is a zip file containing the rockspec and all files needed to install the module.
Each version of a rock get its own .rockspec.
A .rockspec may build multiple rocks.

About - LuaRocks

Packages

Penlight Lua's battery
torch/paths
leafo/etlua: Embedded Lua templates
leafo/loadkit: Loadkit allows you to load arbitrary files within the Lua package path
hishamhm/f-strings: String interpolation for Lua
dkjson - dkjson
pkulchenko/serpent: Lua serializer and pretty printer
LDoc documentation

mpeterv/luacheck: A tool for linting and static analysis of Lua code.

Lua