Louis idioms compiled in one place

Question

I use Lua for some of my applications. I am looking for a central repository of Lua idioms because I don't want to write C in Lua.

A few examples that I came across are as follows:

x = x or v 

This sets the default value for x, if not already set.

Another is

 x, y = y, x 

to exchange two variables.

Answer 1

These links have a whole bunch of useful snippets and idioms:

http://lua-users.org/wiki/SampleCode

http://www.luafaq.org

Answer 2

Lua Patterns, Tips and Tricks here, on stack overflow, is also very well read.

Answer 3

Try http://lua-users.org/wiki/LuaDirectory - this and the Lua / PiL manual are probably your two best resources in this regard.

• Lua 5.1 Reference Guide
• Programming in Lua, 1st Edition (The first edition is available online for free. The second thing you can buy, although the third edition - for 5.2 - should be available soon.)