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Difference between revisions of "LUA"
From NetSec
(→Global Variables vs Local Variables) |
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return Sum | return Sum | ||
end | end | ||
| + | </source> | ||
| + | }} | ||
| + | |||
| + | |||
| + | =Tables= | ||
| + | Lua tables are a bit like arrays, except that an array is.. well an array of values. | ||
| + | A Table, is an array of Keys, and those Keys have values. | ||
| + | |||
| + | {{Protip|Unlike what you would expect, the index for a table starts at 1, instead of 0.}} | ||
| + | Declaring a Table: | ||
| + | {{code|text= | ||
| + | <source lang="lua"> | ||
| + | MyTable = {} --declares an empty table. | ||
</source> | </source> | ||
}} | }} | ||
Revision as of 20:14, 4 May 2012
Lua is a portable interpreted language. It is mainly used in Games, however it is also used by NMAP's Scripting Engine
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Variables
In Lua, variables are very simple, you don't even have to declare a datatype, all you need to do is assign a value.
Var = 1 Var2 = "Im a var!" Var3 = 2 Var4 = Var * Var3 |
Global Variables vs Local Variables
When you declare a variable in Lua, it is globally accessible unless otherwise specified with local.
GlobalVar = 0 local LocalVar = 1337 |
Functions
Functions in lua are quite easy as well.
function SimpleAddition(x,y,z) local Sum = x + y + z --only accessible from within this context. SumTimesTwo = Sum * 2 -- can be referenced from anywhere in the current file, or wherever file is loaded. return Sum end |
Tables
Lua tables are a bit like arrays, except that an array is.. well an array of values. A Table, is an array of Keys, and those Keys have values.
Protip: Unlike what you would expect, the index for a table starts at 1, instead of 0.
Declaring a Table:
MyTable = {} --declares an empty table. |
