View source for Basic lua: Types

{| class="in"
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| class="i_arrow clickablecell" |  [[basic_lua:_Operators|<]]
| class="i_norm clickablecell" | '''[[basic_lua:_Index|Index]]'''
| class="i_arrow clickablecell" | [[basic_lua:_Tables|>]]
|}
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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 ==
{| class="ts"
|-
| <span class="vsyellow">boolean</span> || width="90%" | This returns a value of '''true''' or '''false'''.
|-
| <span class="vsyellow">function</span> || A function usually contains a list of actions to be executed & can often be used to calculate & return values.
|-
| <span class="vsyellow">nil</span> || If no data type is returned then whatever you queried is either empty or does not exist, thus it is '''nil'''.
|-
| <span class="vsyellow">number</span> || This usually contains an integer (whole) or floating point (decimal) number.
|-
| <span class="vsyellow">string</span> || This usually contains text or numbers wrapped in "quotation marks" or 'apostrophes'.
|-
| <span class="vsyellow">table</span> || This usually consists of an array, or multiple arrays of data & data types.
|} 

=== Boolean ===
{| class="ts"
|-
! prints true !!
|-
| <syntaxhighlight lang="lua">
local a = true

print( a, type(a) )
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_1.png|frameless|center|180px]]
|}

=== Function ===
{| class="ts"
|-
! prints 7 !!
|-
| <syntaxhighlight lang="lua">
function a(i)
 return i
end

print( a(7), type(a) )
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_2.png|frameless|center|180px]]
|}

=== Nil ===
{| class="ts"
|-
! prints nil, nil !!
|-
| <syntaxhighlight lang="lua">
local a = nil

print( a, "  type = " .. type(a) )
print( b, "  type = " .. type(b) )
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_3.png|frameless|center|180px]]
|}

=== Number ===
{| class="ts"
|-
! prints 7, 7.25 !!
|-
| <syntaxhighlight lang="lua">
local a = 7
local b = 7.25

print( a, type(a) )
print( b, type(b) )
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_4.png|frameless|center|180px]]
|}

=== String ===
{| class="ts"
|-
! prints hello world !!
|-
| <syntaxhighlight lang="lua">
local a = "hello world"

print( a, type(a) )
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_5.png|frameless|center|180px]]
|}

=== Table ===
{| class="ts"
|-
! prints 1, 2, 3, 4, 5, 6, 7, 8 !!
|-
| <syntaxhighlight lang="lua">
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) )
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_6.png|frameless|center|180px]]
|}
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{| class="in"
|-
| class="i_arrow clickablecell" |  [[basic_lua:_Operators|<]]
| class="i_norm clickablecell" | '''[[basic_lua:_Index|Index]]'''
| class="i_arrow clickablecell" | [[basic_lua:_Tables|>]]
|}{{toc}}