How to declare arrays if I don't know their number?

[mike2003]

Classic array creation method

Local $aArray[4]
$aArray[0] = "Jasper"
$aArray[1] = "Beethoven"
$aArray[2] = "Pinky"
$aArray[3] = "Fidget"

But what if I need several arrays from a file, and I don't know how many arrays there will be?

Local $aArray1[4]
Local $aArray2[10]
Local $aArray3[6]
Local $aArray4[2]
Local $aArray...[...]

How can I declare arrays at runtime? Maybe an array list whose length I can change?
Is there another way to store such data?

[Jos]

Did you look at the Helpfile? : https://www.autoitscript.com/autoit3/docs/intro/lang_variables.htm

Quote

Arrays and Maps

AutoIt has 2 types of data collection variables: Arrays and Maps.

Arrays are much faster for random access and can have multiple dimensions - a dimension size is fixed at the initially declared value (although it can be altered using ReDim).

 

[mike2003]

Yes > Variable subscript badly formatted.:

And a lot of complaints here on the forum that this is a mistake in the help.

 

Edited February 13, 2022 by mike2003

[Nine]

Maps are only available in Beta version.

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_Version=Beta
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****

Local $array[10] = [1,2,3,4,5,6,7,8,9,0]

Local $map[]

$map["SomeId"] = $array

ConsoleWrite($map.SomeId[3] & @CRLF)

 

[mike2003]

I can't solve my problem in the regular version?

[Nine]

You could use the com object Scripting.Dictionnary which is very close to map :

#include <Constants.au3>
#include <Array.au3>

$sd = ObjCreate("Scripting.Dictionary")

Local $array[10] = [1,2,3,4,5,6,7,8,9,0]

$sd("SomeId") = $array
ConsoleWrite($sd("SomeId")[3] & @CRLF)

 

[ad777]

@mike2003

Local $Text = "hello";Initialize the variable $Text with data.
Local $Array[] = [$Text] ;declare $Array & Automatic Get Number of $Text
If IsDeclared("Array") Then MsgBox(64, "", "Declared") ;;Check if $Array is Declared

 

[mike2003]

I'm happy with ObjCreate. But is there anything to enumerate elements?
Like For - In ?

[spudw2k]

Yep

Local $oDic = ObjCreate("Scripting.Dictionary")
$oDic("USA") = "United States of America"
$oDic("UK") = "United Kingdom"
$oDic("CAN") = "Canada"

For $obj in $oDic.keys
    Msgbox(0,"Key: " & $obj, " Value: " & $oDic($obj))
Next

https://docs.microsoft.com/en-us/office/vba/language/reference/user-interface-help/dictionary-object

Edited February 13, 2022 by spudw2k

[mike2003]

How can I remove a specific element?

For example "UK". So that the loop now returns only two elements.

Quote Removes one specified key/item pair from the Dictionary object.

Edited February 19, 2022 by mike2003

[Nine]

Local $oDic = ObjCreate("Scripting.Dictionary")
$oDic("USA") = "United States of America"
$oDic("UK") = "United Kingdom"
$oDic("CAN") = "Canada"

$oDic.Remove("UK")

ConsoleWrite($oDic.count & @CRLF)