Basic lua: Types

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

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Types

Boolean: This returns a value of true or false.
local a = true print( a, type(a) )

Function: A function usually contains a list of actions to be executed & can often be used to calculate & return values.
function a(i) return i end print( a(7), type(a) )

Nil: If no data type is returned then whatever you queried is either empty or does not exist, thus it is nil.
local a = nil print( a, " type = " .. type(a) ) print( b, " type = " .. type(b) )

Number: This usually contains an integer (whole) or floating point (decimal) number.
local a = 7 local b = 7.25 print( a, type(a) ) print( b, type(b) )

String: This usually contains text or numbers wrapped in "quotation marks" or 'apostrophes'.
local a = "hello world" print( a, type(a) )

Table: This usually consists of an array, or multiple arrays of data & data types.
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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