Is it safe to use ArrayList in AutoIt ?

[kcvinu]

Hi all,
Often, i need to declare arrays without knowing the upper bound. But i hate the ReDim statement. So i found a remedy for this. To create an object of "System.Collections.ArrayList". I would like to know what is the opinion about this method. Is this safe and fast than using ReDim ?

Local $oArrayList = ObjCreate("System.Collections.ArrayList")

 

Edited July 30, 2015 by kcvinu

[JohnOne]

What did you find when you tested it?

[kcvinu]

Our _ArrayDisplay function and some other functions won't support it. But we can use it in our script effectively. 

[iamtheky]

Does not return an object on Win8.1, and tells me i need to install .Net 3.5.  Though it shows as available on 4, 4.5, and 4.6 here:

https://msdn.microsoft.com/en-us/library/system.collections.arraylist(v=vs.110).aspx

 

[kcvinu]

What ?,I have dotnet 4.5 in pc (Win8) . I wonder, how many dot net objects are there for to use like this ?

Edited July 30, 2015 by kcvinu

[guinness]

ArrayList is old and was created before generics existed in v2.0. Anyway, use Scripting.Dictionary or the Autoit array data structure.

[kcvinu]

@guinness, "Scripting.Dictionary" ?. Can i find it in OLEview.exe ?

[JohnOne]

Just as a curiosity I scribbled a simple test.

#include <Array.au3>

Local $oArrayList = ObjCreate("System.Collections.ArrayList")

If Not IsObj($oArrayList) Then
    Exit MsgBox(0, "Error", "Object not created")
EndIf

Local $aArray[0]

Local $iTimer = TimerInit()
_AddToArray()
ConsoleWrite("Array: " & TimerDiff($iTimer) & @LF)

$iTimer = TimerInit()
_AddToArrayList()
ConsoleWrite("ArrayList: " & TimerDiff($iTimer) & @LF)

Func _AddToArray()
    _ArrayAdd($aArray, "Hello")
    _ArrayAdd($aArray, "World")
    _ArrayInsert($aArray, 1, "There")
EndFunc   ;==>_AddToArray

Func _AddToArrayList()
    $oArrayList.Add("Hello")
    $oArrayList.Add("World")
    $oArrayList.Insert(1, "There")
EndFunc   ;==>_AddToArrayList

I get results around the region of...

Array: 0.299370574217228
ArrayList: 2.69229632181963

[guinness]

@guinness, "Scripting.Dictionary" ?. Can i find it in OLEview.exe ?

It's not. Search online for it's usage.

[kcvinu]

@JohnOne, That's a big difference. 

[JLogan3o13]

This is geared toward beginning scripters (not saying that is you), but it does have a nice explanation of the dictionary object.

https://technet.microsoft.com/en-us/library/Ee176993.aspx

 

[iamtheky]

heres an even shorter intro:

Local $myDictionary = ObjCreate("Scripting.Dictionary")
$myDictionary.Add("KeyEntry1" , "ValueEntry1")
$myDictionary.Add("KeyEntry2" , "ValueEntry2")



$i = 0
for $key in $myDictionary.Keys
    msgbox(0, '' , $key)
    msgbox(0, '' , $myDictionary.Items[$i])
    $i += 1
next

 

Edited July 30, 2015 by boththose

[Danyfirex]

@guinness, "Scripting.Dictionary" ?. Can i find it in OLEview.exe ?

File->View TypeLib  

Look into system32's dlls and select scrrun.dll.

Saludos

[kcvinu]

@Danyfirex , I have found it in MSDN. it is very nice to use dictionary in autoit. 

@JLogan3o13 , Thank you for the link.

@boththose , Thank you .

Edited July 31, 2015 by kcvinu