;  Help > AutoIt > Keyword Reference > Func...Return...EndFunc
;  Help > AutoIt > Function Reference > Misc. Management > ExpandVarStrings
;  \AutoIt3\Examples\Helpfile\AutoItSetOption.au3

;#include <Date.au3> ;; Today() Not needed
#include <Math.au3>  ;; _Max()
#include <MsgBoxConstants.au3>
  Opt("ExpandVarStrings", 1) ;1=expand, 0=don't expand  ;; "$var$", "@macro@"

Example()

Func Example()
	; Sample script with two user-defined functions.
	; Notice the use of variables, ByRef and Return.

	Local $iFoo = 2
	Local $iBar = 5
	MsgBox($MB_SYSTEMMODAL, "", " 1a. Works: Today is " & Today() & "@CRLF@ 1b. Fails: $iFoo equals $iFoo$ ")   ; 1a Works. ; 1b Fails
	Swap($iFoo, $iBar)
	MsgBox($MB_SYSTEMMODAL, "", "After swapping $iFoo and $iBar: @CRLF@ 2. Fails: $iFoo now contains $iFoo$ " ) ; 2. ; Fails
	MsgBox($MB_SYSTEMMODAL, "", "Finally: @CRLF@ 3. Works: The larger of 3 and 4 is " & _Max(3, 4))             ; 3. ' Works with &
EndFunc   ;==>Example

Func Swap(ByRef $vVar1, ByRef $vVar2) ; Swap the contents of two variables.
	Local $vTemp = $vVar1
	$vVar1 = $vVar2
	$vVar2 = $vTemp
EndFunc   ;==>Swap

Func Today() ; Return the current date in mm/dd/yyyy form.
	Return '@MON@/@MDAY@/@YEAR@'   ;; single(') or double(") quotes                                          ; 4. ; Works
EndFunc   ;==>Today