0 ~= false

["Jim Bumgardner" <jbum@...>]

This one bit me a couple of days ago:

 

x = 0

.

.

.

if (x) then doSomethingObnoxious() end

 

 

Most of the languages I'm accustomed to would consider x to be false, which had

put me into the bad habit of occasionally using zero when I wanted false.  

 

Sadly, Lua doesn't consider zero to be false, so my program did something obnoxious.  :)

 

- Jim