# LUA ## Alphabetical index of projects in Lua: | | | | | | | | | -------------------------------- | -------------------------------- | -------------------------------- | -------------------------------- | -------------------------------- | -------------------------------- | -------------------------------- | | [A](/awesomo/languages/lua.md#a) | [B](/awesomo/languages/lua.md#b) | [C](/awesomo/languages/lua.md#c) | [D](/awesomo/languages/lua.md#d) | [E](/awesomo/languages/lua.md#e) | [F](/awesomo/languages/lua.md#f) | [G](/awesomo/languages/lua.md#g) | | [H](/awesomo/languages/lua.md#h) | [I](/awesomo/languages/lua.md#i) | [J](/awesomo/languages/lua.md#j) | [K](/awesomo/languages/lua.md#k) | [L](/awesomo/languages/lua.md#l) | [M](/awesomo/languages/lua.md#m) | [N](/awesomo/languages/lua.md#n) | | [O](/awesomo/languages/lua.md#o) | [P](/awesomo/languages/lua.md#p) | [Q](/awesomo/languages/lua.md#q) | [R](/awesomo/languages/lua.md#r) | [S](/awesomo/languages/lua.md#s) | [T](/awesomo/languages/lua.md#t) | [U](/awesomo/languages/lua.md#u) | | [V](/awesomo/languages/lua.md#v) | [W](/awesomo/languages/lua.md#w) | [X](/awesomo/languages/lua.md#x) | [Y](/awesomo/languages/lua.md#y) | [Z](/awesomo/languages/lua.md#z) | | | | | | | | | | | ## K [**KOReader**](https://github.com/koreader/koreader) — a document viewer application, originally created for Kindle e-ink readers. It currently runs on Kindle, Kobo, PocketBook, Ubuntu Touch and Android (2.3+) devices. Developers can also run KOReader emulator for development purpose on desktop PC with Linux and Windows and Mac OSX (experimental for now). ## L [**Lapis**](https://github.com/leafo/lapis) — a web framework for Lua and OpenResty. [**Lor**](https://github.com/sumory/lor) — a fast and minimalist web framework based on OpenResty. Example: ```lua local lor = require("lor.index") local app = lor() app:get("/", function(req, res, next) res:send("hello world!") end) app:run() ``` [**Luacheck**](https://github.com/mpeterv/luacheck) — a tool for linting and static analysis of Lua code. Usage: ```lua luacheck src extra_file.lua another_file.lua ``` Output: ```lua Checking src/good_code.lua OK Checking src/bad_code.lua 3 warnings src/bad_code.lua:3:23: unused variable length argument src/bad_code.lua:7:10: setting non-standard global variable embrace src/bad_code.lua:8:10: variable opt was previously defined as an argument on line 7 Checking src/python_code.lua 1 error src/python_code.lua:1:6: expected '=' near '__future__' Checking extra_file.lua 5 warnings extra_file.lua:3:18: unused argument baz extra_file.lua:4:8: unused loop variable i extra_file.lua:13:7: accessing uninitialized variable a extra_file.lua:14:1: value assigned to variable x is unused extra_file.lua:21:7: variable z is never accessed Checking another_file.lua 2 warnings another_file.lua:2:7: unused variable height another_file.lua:3:7: accessing undefined variable heigth Total: 10 warnings / 1 error in 5 files ``` [**luaposix**](https://github.com/luaposix/luaposix) - a wrapper over POSIX function to fill the gaps of lua standard library. This makes lua capable of implementing everything, only with this single library. [**LuaRocks**](https://github.com/luarocks/luarocks) — a package manager for Lua modules. ![luarocks](https://cdn-images-1.medium.com/max/720/0*sawSUbg8SqRSpEha.) ## M [**middleclass**](https://github.com/kikito/middleclass/) — a simple OOP library for Lua. It has inheritance, metamethods (operators), class variables and weak mixin support. Quick look: ```lua local class = require 'middleclass' local Fruit = class('Fruit') -- 'Fruit' is the class' name function Fruit:initialize(sweetness) self.sweetness = sweetness end Fruit.static.sweetness_threshold = 5 -- class variable (also admits methods) function Fruit:isSweet() return self.sweetness > Fruit.sweetness_threshold end local Lemon = class('Lemon', Fruit) -- subclassing function Lemon:initialize() Fruit.initialize(self, 1) -- invoking the superclass' initializer end local lemon = Lemon:new() print(lemon:isSweet()) -- false ``` ## O [**OpenResty**](https://github.com/openresty/openresty) — a full-fledged web platform by integrating the standard Nginx core, LuaJIT, many carefully written Lua libraries, lots of high quality 3rd-party Nginx modules, and most of their external dependencies. It is designed to help developers easily build scalable web applications, web services, and dynamic web gateways. ![or](https://cdn-images-1.medium.com/max/720/0*Cfdc37-ND1PhOI70.jpg) ## P [**Pegasus.lua**](https://github.com/EvandroLG/pegasus.lua) — an http server to work with web applications written in Lua language. ![pegasus](https://cdn-images-1.medium.com/max/720/1*4W5cLtqAYQDOloeUkAOOxg.png) ## T [**Telize**](https://github.com/fcambus/telize) — a REST API built on Nginx and Lua allowing to get a visitor IP address and to query location information from any IP address. It outputs JSON-encoded IP geolocation data, and supports both JSON and JSONP. ``` t e l i z e _______________________ ______\ /_______ \\ \\ ___ // / __ \ ____ \ __ / \ _____/\ / ____ ___/ \____/ _//____/ \___\___/___\__ /__/ _//____ \\__ ____ __/ __ __ ____ ____ __/ __/// / \_ |/ \_ / \/ /_/ |/ \_ \\\ ___/\___ /____/\_______/\ ___/\___ / <0(--- \__/ -h7- \______/ \ . \__/ ---- \______/ --(0> \ .\ /. . \ .\ // / \______\\ //______/ Y ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://moksh4445.gitbook.io/awesomo/languages/lua.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.