Basic lua: Types

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There are multiple lua types available, which are automatically determined by the returned value of the variable, function or table.

Types

boolean	This returns a value of true or false.
function	A function usually contains a list of actions to be executed & can often be used to calculate & return values.
nil	If no data type is returned then whatever you queried is either empty or does not exist, thus it is nil.
number	This usually contains an integer (whole) or floating point (decimal) number.
string	This usually contains text or numbers wrapped in "quotation marks" or 'apostrophes'.
table	This usually consists of an array, or multiple arrays of data & data types.

Boolean

prints true
local a = true print( a, type(a) )

Function

prints 7
function a(i) return i end print( a(7), type(a) )

Nil

prints nil, nil
local a = nil print( a, " type = " .. type(a) ) print( b, " type = " .. type(b) )

Number

prints 7, 7.25
local a = 7 local b = 7.25 print( a, type(a) ) print( b, type(b) )

String

prints hello world
local a = "hello world" print( a, type(a) )

Table

prints 1, 2, 3, 4, 5, 6, 7, 8
local a = {1,1+1,1*3,2*2,20/4,"6",3.5*2,10-2} print( a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], type(a) )

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