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rdr

Array() equivalent

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Hello,
 
I need to make a call to a method that takes as a parameter a variant that should be an array of properties. For the specific function that I need to be executed, there are no needed properties, so I would need to pass an empty array. In VB I would just use the Array() constructor, but in AutoIt what can I use? Is there something equivalent?
 
Thank you

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Hi,

Welcome to the autoit forum :)

In the beta version you can create empty arrays (e.g: $aArray[0]), I don't know if it's what you're looking for.

Br, FireFox.


 

OS : Win XP SP2 (32 bits) / Win 7 SP1 (64 bits) / Win 8 (64 bits) | Autoit version: latest stable / beta.
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Welcome to AutoIt and the forum!

You need the latest Beta version of AutoIt. There you can create an empty array.

Global $aArray[]
ConsoleWrite(UBound($aArray) & @LF)

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@water,

It's an empty table, not an empty array.

Edited by FireFox

 

OS : Win XP SP2 (32 bits) / Win 7 SP1 (64 bits) / Win 8 (64 bits) | Autoit version: latest stable / beta.
Hardware : Intel(R) Core(TM) i5-2400 CPU @ 3.10Ghz / 8 GiB RAM DDR3.

My UDFs : Skype UDF | TrayIconEx UDF | GUI Panel UDF | Excel XML UDF | Is_Pressed_UDF

My Projects : YouTube Multi-downloader | FTP Easy-UP | Lock'n | WinKill | AVICapture | Skype TM | Tap Maker | ShellNew | Scriptner | Const Replacer | FT_Pocket | Chrome theme maker

My Examples : Capture toolIP Camera | Crosshair | Draw Captured Region | Picture Screensaver | Jscreenfix | Drivetemp | Picture viewer

My Snippets : Basic TCP | Systray_GetIconIndex | Intercept End task | Winpcap various | Advanced HotKeySet | Transparent Edit control

 

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Opps, sorry :>

Looks like I need to get my feet wet with the new features.


My UDFs and Tutorials:

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Active Directory (NEW 2020-10-10 - Version 1.5.2.1) - Download - General Help & Support - Example Scripts - Wiki
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OutlookEX_GUI (NEW 2020-06-27 - Version 1.3.2.0) - Download
Outlook Tools (2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Task Scheduler (2019-12-03 - Version 1.5.1.0) - Download - General Help & Support - Wiki

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ADO - Wiki, WebDriver - Wiki

 

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It's an array, but not an empty array.

Global $aArray = []
ConsoleWrite(VarGetType($aArray) & @LF)
ConsoleWrite(UBound($aArray, 1) & @LF)

returns 1. Strange.


My UDFs and Tutorials:

Spoiler

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OutlookEX (NEW 2020-06-30 - Version 1.6.2.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX_GUI (NEW 2020-06-27 - Version 1.3.2.0) - Download
Outlook Tools (2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Task Scheduler (2019-12-03 - Version 1.5.1.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki, WebDriver - Wiki

 

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Thank you very much for your replies. I installed the Beta version and compiled the script again but unfortunately I am getting COM errors ('interface not registered' for $array[] and 'type mismatch' for $array = []). So, I am guessing there must be some small difference in the implementation of the empty table in autoit?

EDIT: It turns out I was passing another parameter wrong and $array = [] did the job after all! Thank you very much again!

Edited by rdr

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It's an array, but not an empty array.

Global $aArray = []
ConsoleWrite(VarGetType($aArray) & @LF)
ConsoleWrite(UBound($aArray, 1) & @LF)
returns 1. Strange.

 

 

It's not strange, it's opposite of that. Consistent with the syntax rules of AutoIt:

#include <Array.au3>

Local $aArray[5] = [1, 2]

_ArrayDisplay($aArray)

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.

eMyvnE

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Seems I'm a bit slow on the uptake (today).

Why does UBound($aArray4) return 1? Shouldn't it be 0?

Global $aArray1[0], $aArray2[1], $aArray3 = [1], $aArray4 = []
ConsoleWrite("UBound($aArray1, 1): " & UBound($aArray1, 1) & @LF)
ConsoleWrite("UBound($aArray2, 1): " & UBound($aArray2, 1) & @LF)
ConsoleWrite("UBound($aArray3, 1): " & UBound($aArray3, 1) & @LF)
ConsoleWrite("UBound($aArray4, 1): " & UBound($aArray4, 1) & @LF)

>Running:(3.3.9.19):C:\Program Files (x86)\AutoIt3\Beta\autoit3.exe "C:TempTest.au3"    
--> Press Ctrl+Alt+F5 to Restart or Ctrl+Break to Stop

UBound($aArray1): 0
UBound($aArray2): 1
UBound($aArray3): 1
UBound($aArray4): 1

 


My UDFs and Tutorials:

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Active Directory (NEW 2020-10-10 - Version 1.5.2.1) - Download - General Help & Support - Example Scripts - Wiki
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OutlookEX_GUI (NEW 2020-06-27 - Version 1.3.2.0) - Download
Outlook Tools (2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Task Scheduler (2019-12-03 - Version 1.5.1.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki, WebDriver - Wiki

 

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Because array4 has one element - an empty string, because AutoIt doesn't know for "nothing", it always has to be something.

Array literal implies "something".

You may not see the obvious on that simple example, but for more complex ones (multidimensional arrays literals) it will be clear, only your head might hurt at first. jchd can explain better, he's good with words.


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eMyvnE

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[] = [Null] maybe.


 

OS : Win XP SP2 (32 bits) / Win 7 SP1 (64 bits) / Win 8 (64 bits) | Autoit version: latest stable / beta.
Hardware : Intel(R) Core(TM) i5-2400 CPU @ 3.10Ghz / 8 GiB RAM DDR3.

My UDFs : Skype UDF | TrayIconEx UDF | GUI Panel UDF | Excel XML UDF | Is_Pressed_UDF

My Projects : YouTube Multi-downloader | FTP Easy-UP | Lock'n | WinKill | AVICapture | Skype TM | Tap Maker | ShellNew | Scriptner | Const Replacer | FT_Pocket | Chrome theme maker

My Examples : Capture toolIP Camera | Crosshair | Draw Captured Region | Picture Screensaver | Jscreenfix | Drivetemp | Picture viewer

My Snippets : Basic TCP | Systray_GetIconIndex | Intercept End task | Winpcap various | Advanced HotKeySet | Transparent Edit control

 

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[] = [""]

In current language implementation yes. Tomorrow it may be something else. If you leave AutoIt to fill unspecified elements then AutoIt will always use what's "nothing" to it.

So there is no such thing as an empty array literal then?

No. And yes. But no.

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eMyvnE

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Now it's clear, thanks.

I still prefer to define 2 or 4-dimensional arrays the "traditional" way ;)


My UDFs and Tutorials:

Spoiler

UDFs:
Active Directory (NEW 2020-10-10 - Version 1.5.2.1) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX (NEW 2020-06-30 - Version 1.6.2.0) - Download - General Help & Support - Example Scripts - Wiki
OutlookEX_GUI (NEW 2020-06-27 - Version 1.3.2.0) - Download
Outlook Tools (2019-07-22 - Version 0.6.0.0) - Download - General Help & Support - Wiki
ExcelChart (2017-07-21 - Version 0.4.0.1) - Download - General Help & Support - Example Scripts
PowerPoint (2017-06-06 - Version 0.0.5.0) - Download - General Help & Support
Excel - Example Scripts - Wiki
Word - Wiki
Task Scheduler (2019-12-03 - Version 1.5.1.0) - Download - General Help & Support - Wiki

Tutorials:
ADO - Wiki, WebDriver - Wiki

 

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I do too.

I also think that the language shuldn't, just because of that, have (unlogical) boundaries that would restrict users from prefering something else.

Lifted boundaries give new possibilites even for us.


♡♡♡

.

eMyvnE

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