Opened 3 years ago

Last modified 3 years ago

#3540 new Feature Request

Implement optional ByRef parameters for functions

Reported by: TheDcoder <TheDcoder@…> Owned by:
Milestone: Component: AutoIt
Version: Severity: None
Keywords: optional, functions, byref Cc:


Hello, I know that this had been already bought up in ticket #2360 but I am going to re-request the feature with proper reasoning and support.

I would like to see optional ByRef parameters work in AutoIt. They would function something like this: If a function has been called which contains an optional ByRef parameter, the ByRef parameter should act as a "normal" non-ByRef parameter unless it has been specified in the function call.

There are several advantages to this approach:

  1. It is fully backward compatible
  2. Several functions which use ByRef parameters can be made optional
  3. This solves the problem of creating "dummy" variables which are just created for the sake of passing them to ByRef parameters.

I think this is relatively easy to implement and won't have any side effects unlike most feature requests.

If we have nothing to lose but except gain, why don't we do it? ;)

Here is some proof-of-concept code:


Func FuncWithOptionalByRef(ByRef $vFoo = "Bar")
	ConsoleWrite($vFoo & @CRLF)

Expected Output after the implementation of this feature:


In the latest version, the PoC code won't work because of an error: "Badly formatted function"

Attachments (0)

Change History (2)

comment:1 Changed 3 years ago by TheDcoder <TheDcoder@…>

Ticket #3538 can be completed if this feature request was accepted!

comment:2 Changed 3 years ago by TheDcoder <TheDcoder@…>

All discussion related to this ticket can be found at the thread which I created at the forum.

Guidelines for posting comments:

  • You cannot re-open a ticket but you may still leave a comment if you have additional information to add.
  • In-depth discussions should take place on the forum.

For more information see the full version of the ticket guidelines here.

Add Comment

Modify Ticket

as new The ticket will remain with no owner.

E-mail address and user name can be saved in the Preferences.

Note: See TracTickets for help on using tickets.