Global Scope and Include files

[Zog]

Question: is there any way to have '#include' files have reference to Global variables without explicitly including the Global variable in the calling function?

Here is a short example showing the issue:

 "Foo.au3" which is:

#include-once

Func Foo()
    ConsoleWrite("$debug="&$debug&@CRLF)
EndFunc

 

"Foo2.au3" which is:

#include <Foo.au3>

Global $debug = True

Foo()

Exit

 

When executing Foo2 I get this error:

Foo.au3"(2,30) : warning: $debug: possibly used before declaration.
ConsoleWrite("$debug="&$debug&
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^

Now, lets assume I have a file called "Foo3.au3" which is:

Global $debug = True

Foo()

Func Foo()
    ConsoleWrite("$debug="&$debug&@CRLF)
EndFunc

 

When I run Foo3 it works as expected.  Foo3 is just, in my mind, the Foo2 with Foo included.  What am I missing please?

 

 

Edited Monday at 07:05 PM by Zog
learned how to insert code snippets. Change to this for reading clarity

[Jos]

It simply comes down to putting the lines in the right order. Just imagine the included file being part of its master at the point of the include statement. 

So put the global statement first and it will be known in your include file. 

 

[Zog]

Simple errors from simple minds!!  

That works fine - thank you!

Edited Monday at 07:06 PM by Zog
fix typo

[MattyD]

just to add my 2 cents..

In most cases you'd declare that $debug switch within the dependency. That's because Foo() needs it, and that's where the func lives.

#include-once

Global $debug = False ;Default value

Func Foo()
    ConsoleWrite("$debug="&$debug&@CRLF)
EndFunc

And just switch it on/off in your main script as needed.

#include <Foo.au3>

$debug = True

Foo()

Exit

Edit: Or if you're getting a bit fancier.. This probably makes your include file behave a bit more like a drop-in module.

#include-once

Global $__g_bDebug = False ;Default value

Func Foo()
    ConsoleWrite("$debug="&$__g_bDebug&@CRLF)
EndFunc

Func SetDebug($bState)
    $__g_bDebug = ($bState = True) ;Forces $__g_bDebug to be a boolean type (True/False)
EndFunc

Main script

#include <Foo.au3>

SetDebug(True)

Foo()

Edited yesterday at 11:08 AM by MattyD