Warning: Variable assigned but never used?

[kitz]

Hello!
XS 2.8c, Visual Studio 2019 16.11.6, Win 10 Enterprise 20H1

In code

Code: Select all

METHOD HelpAboutDialog() 
	LOCAL oOD AS Info
	
	(oOD := Info{SELF}):Show()
RETURN NIL

I get the warning:
...Standard Shell.prg(87,8 ): warning XS0219: The variable 'oOD' is assigned but its value is never used
Is this intended?
If I omit oOD completely or
make 2 lines of it 1. with assignment, 2. oOD:Show()
there are no warnings anymore.
Just a minor thing, but wanted to ask/report.
BR Kurt

[wriedmann]

Hi Kurt,

IMHO the compiler is right here: you don't need that variable.

So you can write

Code: Select all

METHOD HelpAboutDialog() 
	
	Info{SELF}:Show()
RETURN NIL

or

Code: Select all

METHOD HelpAboutDialog() 
	LOCAL oOD AS Info
	
	oOD := Info{SELF}
	oOD:Show()
RETURN NIL

Both cases should not show the warning.

Wolfgang

[Jamal]

Kurt,

Just like Wolfgang said.

May I add, the compiler is basically saying that you declared and assigned a variable for no useful purpose.

Jamal