Strip duplicate and blank entries from an array

[Rofellos 4]

Using functions as _FileListToArray or StringSplit, you may get an array with several duplicate or blank entries. This function removes all duplicate and blank entries, and return a new array (without duplicate and blank entries). It also updates the element of index 0 (number of entries).

* It needs to #include <Array.au3>

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; #FUNCTION# ======================================================================================================
; Name...........: ArrayStripDuplicate
; Description ...: Strips the duplicate items and blank space from given array
; Syntax.........: ArrayStripDuplicate($aArray)
; Parameters ....: $aArray - Input array
; Return values .: Success - The new array
;                  Failure - -1, sets @error to:
;                  |1 - $aArray is not an array
;                  |2 - $aArray is not a 1 dimensional array
; Author ........: Renan Maronni <renanmaronni@hotmail.com>
; Modified.......:
; Remarks .......: It needs the #include <Array.au3>
; Related .......:
; Link ..........:
; Example .......:
; =================================================================================================================

Func ArrayStripDuplicate($aArray)

    Local $aNewArray[1]
    Local $iArraySize = UBound($aArray)

    If (Not IsArray($aArray)) Then
        Return SetError(1, 0, -1)
    EndIf

    If (UBound($aArray, 0) <> 1) Then
        Return SetError(2, 0, -1)
    EndIf

    For $i = 1 To ($iArraySize - 1)
        If (_ArraySearch($aNewArray, $aArray[$i]) = -1) Then
            _ArrayAdd($aNewArray, $aArray[$i])
        EndIf
    Next

    $aNewArray[0] = UBound($aNewArray) - 1

    Return $aNewArray

EndFunc   ;==>ArrayStripDuplicate

[UEZ 1,096]

What about the build in function _ArrayUnique()? It is slow but working...

Br,

UEZ

Edited December 23, 2010 by UEZ