;-- TIME_STAMP   2018-06-22 11:38:22   v 0.1

; #FUNCTION# ====================================================================================================================
; Name ..........: _Number
; Description ...: Works like "Number()", but avoids to convert a string to number 0!
; Syntax ........: _Number($_Expression, $_Flag)
; Parameters ....: $_Expression    - An expression to convert into a number.
; ...............: $_Flag          - Can be one of the following:
; ...............:                   $NUMBER_AUTO (0) = (default) the result is auto-sized integer.
; ...............:                   $NUMBER_32BIT (1) = the result is 32bit integer.
; ...............:                   $NUMBER_64BIT (2) = the result is 64bit integer.
; ...............:                   $NUMBER_DOUBLE (3) = the result is double.
; Return values .: Success           The converted number, if $_Expression is a number or starts with a number.
; ...............: Failure           Empty string, sets @error = 1   $_Expression is a string or starts with a string.
; Author ........: BugFix
; Remarks .......: In contrast to Number(), you get only a number, if $_Expression is a number or starts with it.
; ...............: Because 0 is also a number, Number() give unclear results:
; ...............: Number("foo") returns 0. Number("0") returns also 0. "0" converts to the real number 0, but "foo" also??
; ===============================================================================================================================
Func _Number($_Expression, $_Flag=0)
	If StringRegExp($_Expression, '\A(\D+)') Then
		Return SetError(1, 0, '')
	Else
		Return Number($_Expression, $_Flag)
	EndIf
EndFunc   ;==>_Number