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#21131 - 2002-05-03 10:46 AM Using Functions
briannz556 briannz556 Getting the hang of it Registered: 2002-05-03 Posts: 64 Loc: new zealand	My very first posting so perhaps everyone knows this. Anyway, here goes. I want to use functions very much like procedures whereby I don't use the return value. I discovered by trial and error that a call to a function like: ;lines of code initialiseparameters() ;more lines of code can cause problems at times. Is this an obvious statement? I have a sample piece of code to illustrate if necessary.
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#21132 - 2002-05-03 10:50 AM Re: Using Functions
Jochen Jochen KiX Supporter Registered: 2000-03-17 Posts: 6380 Loc: Stuttgart, Germany	Welcome Brian, not quite obvious ... please post your sample code Jochen _________________________
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#21133 - 2002-05-03 10:52 AM Re: Using Functions
Jochen Jochen KiX Supporter Registered: 2000-03-17 Posts: 6380 Loc: Stuttgart, Germany	Or do you mean you want to suppress the console output that your functions generate ? Try to use a nulifier like : $nul = function() hth Jochen _________________________
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#21134 - 2002-05-04 12:20 AM Re: Using Functions
briannz556 briannz556 Getting the hang of it Registered: 2002-05-03 Posts: 64 Loc: new zealand	Ok, I seem to have destroyed my sample. So perhaps I'll start again by asking a question. Why won't the following concept work? break on DIM $PCsetting[4] InitialiseVariables() Report() Quit FUNCTION InitialiseVariables() $PCsetting[1]='one' $PCsetting[2]='two' $PCsetting[3]='three' ENDFUNCTION FUNCTION Report() FOR EACH $element IN $PCsetting ?$element NEXT ENDFUNCTION
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#21135 - 2002-05-04 12:32 AM

Re: Using Functions

Richard H. Offline

Administrator

Registered: 2000-01-24
Posts: 4946
Loc: Leatherhead, Surrey, UK

It's all down to scope.

The following is a better solution as it avoids exposing the variables in the function:

code:

Break ON 

Report(InitialiseVariables())

Function InitialiseVariables()
	Dim $PCsetting[4]
	$PCsetting[1]='one'
	$PCsetting[2]='two'
	$PCsetting[3]='three'
	$InitialiseVariables=$PCSetting
EndFunction

Function Report($PCSetting)
	For Each $element In $PCsetting
		$element ?
	Next
EndFunction

If you really need the array to have a global scope then the following works:

code:

Break ON 

GLOBAL $PCSetting
$PCSetting=InitialiseVariables()
Report()

Function InitialiseVariables()
	Dim $PCsetting[4]
	$PCsetting[1]='one'
	$PCsetting[2]='two'
	$PCsetting[3]='three'
	$InitialiseVariables=$PCSetting
EndFunction

Function Report()
	For Each $element In $PCsetting
		$element ?
	Next
EndFunction

Don't forget the array subscript starts at zero, not one.

[ 03 May 2002, 12:36: Message edited by: Richard Howarth ]

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