The following are concepts that you need to keep in mind when working with Lua.
A comment can be anything in between two hyphens and the next end of line:
--This is a comment
Comment blocks are also supported. They are delimited by the characters --[[ and ]]:
--[[ This is a multi-line comment block. ]]
There are occasions where you don’t need all the information returned by a function, and in Lua, you can use dummy assignments to discard a return value. The operator is _ (underscore):
local _, _, item = string.find(<string>, <pattern with capture>)
Indexes start at one, not zero:
z={"a","b","c"}
z[1]="b" --This assignment will change the content of the table to
{"b","b","c"}However, you can initialize an array at any value:
nmap = {}
for x=-1337, 0 do
nmap[x] = 1
end