Difference between revisions of "Basic lua: Types"
From The Official Visionaire Studio: Adventure Game Engine Wiki
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| <span class="vsyellow">table</span> || This usually consists of an array, or multiple arrays of data & data types. | | <span class="vsyellow">table</span> || This usually consists of an array, or multiple arrays of data & data types. | ||
|} | |} | ||
| − | + | ||
| + | === Boolean === | ||
{| class="ts" | {| class="ts" | ||
|- | |- | ||
| − | ! | + | ! returns true !! |
|- | |- | ||
| <syntaxhighlight lang="lua"> | | <syntaxhighlight lang="lua"> | ||
| Line 34: | Line 35: | ||
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_1.png|frameless|center|180px]] | </syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_1.png|frameless|center|180px]] | ||
|} | |} | ||
| − | + | ||
| + | === Function === | ||
{| class="ts" | {| class="ts" | ||
|- | |- | ||
| − | ! | + | ! returns 7 !! |
|- | |- | ||
| <syntaxhighlight lang="lua"> | | <syntaxhighlight lang="lua"> | ||
| Line 47: | Line 49: | ||
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_2.png|frameless|center|180px]] | </syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_2.png|frameless|center|180px]] | ||
|} | |} | ||
| − | + | ||
| + | === nil === | ||
{| class="ts" | {| class="ts" | ||
|- | |- | ||
| − | ! nil !! | + | ! returns nil !! |
|- | |- | ||
| <syntaxhighlight lang="lua"> | | <syntaxhighlight lang="lua"> | ||
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</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_3.png|frameless|center|180px]] | </syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_3.png|frameless|center|180px]] | ||
|} | |} | ||
| − | + | ||
| + | === Number === | ||
{| class="ts" | {| class="ts" | ||
|- | |- | ||
| − | ! | + | ! returns 7 & 7.25 !! |
|- | |- | ||
| <syntaxhighlight lang="lua"> | | <syntaxhighlight lang="lua"> | ||
| Line 72: | Line 76: | ||
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_4.png|frameless|center|180px]] | </syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_4.png|frameless|center|180px]] | ||
|} | |} | ||
| − | + | ||
| + | === String === | ||
{| class="ts" | {| class="ts" | ||
|- | |- | ||
| − | ! | + | ! returns hello world !! |
|- | |- | ||
| <syntaxhighlight lang="lua"> | | <syntaxhighlight lang="lua"> | ||
| Line 83: | Line 88: | ||
</syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_5.png|frameless|center|180px]] | </syntaxhighlight> || width="180px" style="vertical-align:middle;" | [[File:Basic_lua_(types)_5.png|frameless|center|180px]] | ||
|} | |} | ||
| − | + | ||
| + | === Table === | ||
{| class="ts" | {| class="ts" | ||
|- | |- | ||
| − | ! | + | ! returns 1, 2, 3, 4, 5, 6, 7, 8 !! |
|- | |- | ||
| <syntaxhighlight lang="lua"> | | <syntaxhighlight lang="lua"> | ||
Revision as of 02:12, 3 September 2022
| < | Index | > |
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
| returns true | |
|---|---|
local a = true
print( a, type(a) )
|
_1.png) |
Function
| returns 7 | |
|---|---|
function a(i)
return i
end
print( a(7), type(a) )
|
_2.png) |
nil
| returns nil | |
|---|---|
local a = nil
print( a, " type = " .. type(a) )
print( b, " type = " .. type(b) )
|
_3.png) |
Number
| returns 7 & 7.25 | |
|---|---|
local a = 7
local b = 7.25
print( a, type(a) )
print( b, type(b) )
|
_4.png) |
String
| returns hello world | |
|---|---|
local a = "hello world"
print( a, type(a) )
|
_5.png) |
Table
| returns 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) )
|
_6.png) |
| < | Index | > |
