I need clarification on Metatable.__index

I need clarification on Metatable.__index



1.Programming in Lua : 28.3

Description:This first edition was written for Lua 5.0. While still
largely relevant for later versions, there are some differences. The third
edition targets Lua 5.2 and is ...



2.Lua 5.1 Reference Manual - The Programming Language Lua

Description:lua_Alloc typedef void * (*lua_Alloc) (void *ud, void *ptr,
size_t osize, size_t ...



3.lua-users wiki: Metamethods Tutorial

Description:This is a brief introduction to the concepts of Lua
metamethods. Metamethods. Lua has a powerful extension mechanism which
allows you to overload certain operations ...



4.Could not determine a MetaTable. - CodeProject

Description:For me, it turns out that in my grid view, the columns were
bound as an "asp:DynamicField", not as a "asp:BoundField" ie changing my
columns from something like so:



5.justinmchase | programmar

Description:programmar (by justinmchase) ... I've been having some fun
with the new Terraria update. Leo and I built a Lava Dome.



6.Learn Lua in 15 Minutes - Tyler Neylon

Description:-- Two dashes start a one-line comment. --[[ Adding two ['s
and ]'s makes it a multi-line comment. --]] ----- -- 1.



7.Ruben Laguna's blog

Description:The idea is to set up the basic lua enviroment thought the
luaL_newstate and luaL_openlibs. Then we create a metatable with
luaL_newmetatable. A metatable is just a ...



8.lua-users wiki: Modules Tutorial

Description:Creating and using Modules. There are actually two ways to
make modules, the old (and deprecated) way for 5.0 and early 5.1, and the
new way for 5.1 and 5.2.



9.Lua Unofficial FAQ (uFAQ)

Description:Lua Unofficial FAQ (uFAQ) 1 Language. 1.1 Where to start? 1.2
Suitability as a first programming language? 1.3 Suitability as a second
programming language?



10.Lua (programming language) - Wikipedia, the free encyclopedia

Description:Lua is a lightweight multi-paradigm programming language
designed as a scripting language with extensible semantics as a primary
goal. Lua is cross-platform since it ...