RC86

Return Nested Array

12 posts in this topic

#1 ·  Posted (edited)

Afternoon!

I have a requirement to return both a string and an array from a function so as a result I put them both into an array and returned that.  I can access them in their entirety after returning them but then I can't seem to access the array elements after this.  Should I be able to or is there a prettier way?

#include <Array.au3>

;Memory info returned as a string and an array
$memoryInfo = _getMemoryInfo()
msgbox(0,"Memory Info",$memoryInfo[0])
_ArrayDisplay($memoryInfo[1],"Memory as an Array")

Local $newArray[7]
$memoryInfo[1] = $newArray

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)


Func _getMemoryInfo()
    Local $newArray[7]
    Local $array = MemGetStats()
    $newArray[0] = $array[0]                        ;% of memory in use
    $newArray[1] = Round($array[1]/1024 * 0.001,2)  ;Total physical RAM
    $newArray[2] = Round($array[2]/1024 * 0.001,2)  ;Availaible physical RAM
    $newArray[3] = Round($array[3]/1024 * 0.001,2)  ;Total pagefile
    $newArray[4] = Round($array[4]/1024 * 0.001,2)  ;Available pagefile
    $newArray[5] = Round($array[5]/1024 * 0.001,2)  ;Total virtual
    $newArray[6] = Round($array[6]/1024 * 0.001,2)  ;Available virtual
    $memoryUsage = $newArray[1] - $newarray[2]
    $pagefileUsage = $newArray[3] - $newarray[4]

    ;Output/Return
    Local $returnArray[2]
    $returnArray[0] = "Memory: " & $memoryUsage & " GB/" & $newArray[1] & " GB " & @CRLF & "Pagefile: " & $pagefileUsage & " GB/" & $newArray[3] & " GB "
    $returnArray[1] = $newArray
    return $returnArray
EndFunc

A bit messy but hopefully it's understandable what I'm trying to achieve.

Thanks!

Edited by RC86

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#2 ·  Posted (edited)

Perhaps I misunderstand your example, but after I added the line:

#include <Array.au3>

To the start of the script, it appeared to work OK for me. What was your error?

EDIT *** ah my mistake, I was exiting the script too soon! Apologies, I will look some more***

Edited by SlackerAl

Problem solving step 1: Write a simple, self-contained, running, replicator of your problem.

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2 minutes ago, SlackerAl said:

Perhaps I misunderstand your example, but after I added the line:

#include <Array.au3>

To the start of the script, it appeared to work OK for me. What was your error?

Apologies, I've edited the code now so it runs from copy paste.

No sorry - the issue I'm having is you'll notice the final message box/array display will show blank.  I'd like to be able to access the elements from the returned array, but as that has been returned within an array, is that even possible?

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#include <Array.au3>
;Memory info returned as a string and an array
$memoryInfo = _getMemoryInfo()
msgbox(0,"Memory Info",$memoryInfo[0])
_ArrayDisplay($memoryInfo[1],"Memory as an Array")

Local $newArray[7] = ["test1", "test2", "test3", "test4", "test5", "test6"]
$memoryInfo[1] = $newArray

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)


Func _getMemoryInfo()
    Local $newArray[7]
    Local $array = MemGetStats()
    $newArray[0] = $array[0]                        ;% of memory in use
    $newArray[1] = Round($array[1]/1024 * 0.001,2)  ;Total physical RAM
    $newArray[2] = Round($array[2]/1024 * 0.001,2)  ;Availaible physical RAM
    $newArray[3] = Round($array[3]/1024 * 0.001,2)  ;Total pagefile
    $newArray[4] = Round($array[4]/1024 * 0.001,2)  ;Available pagefile
    $newArray[5] = Round($array[5]/1024 * 0.001,2)  ;Total virtual
    $newArray[6] = Round($array[6]/1024 * 0.001,2)  ;Available virtual
    $memoryUsage = $newArray[1] - $newarray[2]
    $pagefileUsage = $newArray[3] - $newarray[4]

    ;Output/Return
    Local $returnArray[2]
    $returnArray[0] = "Memory: " & $memoryUsage & " GB/" & $newArray[1] & " GB " & @CRLF & "Pagefile: " & $pagefileUsage & " GB/" & $newArray[3] & " GB "
    $returnArray[1] = $newArray
    return $returnArray
EndFunc

This appears to work... was missing a $ infront of newArray


Problem solving step 1: Write a simple, self-contained, running, replicator of your problem.

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#5 ·  Posted (edited)

5 minutes ago, SlackerAl said:
#include <Array.au3>
;Memory info returned as a string and an array
$memoryInfo = _getMemoryInfo()
msgbox(0,"Memory Info",$memoryInfo[0])
_ArrayDisplay($memoryInfo[1],"Memory as an Array")

Local $newArray[7] = ["test1", "test2", "test3", "test4", "test5", "test6"]
$memoryInfo[1] = $newArray

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)


Func _getMemoryInfo()
    Local $newArray[7]
    Local $array = MemGetStats()
    $newArray[0] = $array[0]                        ;% of memory in use
    $newArray[1] = Round($array[1]/1024 * 0.001,2)  ;Total physical RAM
    $newArray[2] = Round($array[2]/1024 * 0.001,2)  ;Availaible physical RAM
    $newArray[3] = Round($array[3]/1024 * 0.001,2)  ;Total pagefile
    $newArray[4] = Round($array[4]/1024 * 0.001,2)  ;Available pagefile
    $newArray[5] = Round($array[5]/1024 * 0.001,2)  ;Total virtual
    $newArray[6] = Round($array[6]/1024 * 0.001,2)  ;Available virtual
    $memoryUsage = $newArray[1] - $newarray[2]
    $pagefileUsage = $newArray[3] - $newarray[4]

    ;Output/Return
    Local $returnArray[2]
    $returnArray[0] = "Memory: " & $memoryUsage & " GB/" & $newArray[1] & " GB " & @CRLF & "Pagefile: " & $pagefileUsage & " GB/" & $newArray[3] & " GB "
    $returnArray[1] = $newArray
    return $returnArray
EndFunc

This appears to work... was missing a $ infront of newArray

Yea I've edited that in my original post thanks.  My issue is lines 8-12.  You'll notice they are blank.  I'm trying to access elements from an array that have been returned within an array.

eg. So by running _getMemoryInfo() function the return value is an array and im assigning it to $memoryInfo.  That means $memoryInfo is an array then with 2 elements [0] is a string [1] is an array.  So u can make [1] show in its entirety (using _ArrayDisplay), but how can you access the individual elements of the array now stored within $memoryInfo[1].

Edited by RC86

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Were you expecting your $newArray to pick up the data from the function? That won't happen as you have $newArray scoped as local within the function. Hence, I added some "test" values to $newArray when you define it as local within the main (although as far as I am aware variables defined in the main are always scoped as global unless specifically scoped as local within a function definition).


Problem solving step 1: Write a simple, self-contained, running, replicator of your problem.

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#7 ·  Posted (edited)

I am very confused as to what you are expecting here:

Local $newArray[7]
$memoryInfo[1] = $newArray

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)

Why do you think this will display anything? You do not add anything to $newArray

Edit: Did you mean to type $newArray = $memoryInfo[1]?

Edited by SlackerAl

Problem solving step 1: Write a simple, self-contained, running, replicator of your problem.

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1 minute ago, SlackerAl said:

I am very confused as to what you are expecting here:

Local $newArray[7]
$memoryInfo[1] = $newArray

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)

Why do you think this will display anything? You do not add anything to $newArray

Sorry I'm probably bad at explaining - I was trying to use the array contained in element $memoryInfo[1] and assign it a new array so i could then access its individual elements.  But i was showing that this does not work using those lines - so is there another way it can be done?

 

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#include <Array.au3>

;Memory info returned as a string and an array
$memoryInfo = _getMemoryInfo()
msgbox(0,"Memory Info",$memoryInfo[0])
_ArrayDisplay($memoryInfo[1],"Memory as an Array")

Local $newArray[7]
$newArray = $memoryInfo[1]

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)


Func _getMemoryInfo()
    Local $newArray[7]
    Local $array = MemGetStats()
    $newArray[0] = $array[0]                        ;% of memory in use
    $newArray[1] = Round($array[1]/1024 * 0.001,2)  ;Total physical RAM
    $newArray[2] = Round($array[2]/1024 * 0.001,2)  ;Availaible physical RAM
    $newArray[3] = Round($array[3]/1024 * 0.001,2)  ;Total pagefile
    $newArray[4] = Round($array[4]/1024 * 0.001,2)  ;Available pagefile
    $newArray[5] = Round($array[5]/1024 * 0.001,2)  ;Total virtual
    $newArray[6] = Round($array[6]/1024 * 0.001,2)  ;Available virtual
    $memoryUsage = $newArray[1] - $newarray[2]
    $pagefileUsage = $newArray[3] - $newarray[4]

    ;Output/Return
    Local $returnArray[2]
    $returnArray[0] = "Memory: " & $memoryUsage & " GB/" & $newArray[1] & " GB " & @CRLF & "Pagefile: " & $pagefileUsage & " GB/" & $newArray[3] & " GB "
    $returnArray[1] = $newArray
    return $returnArray
EndFunc

 

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Problem solving step 1: Write a simple, self-contained, running, replicator of your problem.

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4 minutes ago, SlackerAl said:
#include <Array.au3>

;Memory info returned as a string and an array
$memoryInfo = _getMemoryInfo()
msgbox(0,"Memory Info",$memoryInfo[0])
_ArrayDisplay($memoryInfo[1],"Memory as an Array")

Local $newArray[7]
$newArray = $memoryInfo[1]

msgbox(0,"Test element",$newArray[0])
_ArrayDisplay($newArray)


Func _getMemoryInfo()
    Local $newArray[7]
    Local $array = MemGetStats()
    $newArray[0] = $array[0]                        ;% of memory in use
    $newArray[1] = Round($array[1]/1024 * 0.001,2)  ;Total physical RAM
    $newArray[2] = Round($array[2]/1024 * 0.001,2)  ;Availaible physical RAM
    $newArray[3] = Round($array[3]/1024 * 0.001,2)  ;Total pagefile
    $newArray[4] = Round($array[4]/1024 * 0.001,2)  ;Available pagefile
    $newArray[5] = Round($array[5]/1024 * 0.001,2)  ;Total virtual
    $newArray[6] = Round($array[6]/1024 * 0.001,2)  ;Available virtual
    $memoryUsage = $newArray[1] - $newarray[2]
    $pagefileUsage = $newArray[3] - $newarray[4]

    ;Output/Return
    Local $returnArray[2]
    $returnArray[0] = "Memory: " & $memoryUsage & " GB/" & $newArray[1] & " GB " & @CRLF & "Pagefile: " & $pagefileUsage & " GB/" & $newArray[3] & " GB "
    $returnArray[1] = $newArray
    return $returnArray
EndFunc

 

HA!!! I'm so sorry I understand what you meant by your previous comment - I can't believe I managed to be that stupid - I'm going to take myself for a bit of fresh air now! Thank you!!! :)

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No worries, glad we got there in the end :-)

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Problem solving step 1: Write a simple, self-contained, running, replicator of your problem.

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Just now, SlackerAl said:

No worries, glad we got there in the end :-)

Ha thanks buddy - have an awesome afternoon!

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      The "assign" line within the primarygui funtion, is this only a local assignment? if so, how can I make it cross function?
       
      Thank in adv for your help
       
       
      Func excelsheetlist() $i = 0 Global $aWorkSheets = _Excel_SheetList($oWorkbook1) If @error Then Exit MsgBox($MB_SYSTEMMODAL, "Excel UDF: _Excel_SheetList Example 1", "Error listing Worksheets." & @CRLF & "@error = " & @error & ", @extended = " & @extended) ;_ArrayDisplay($aWorkSheets, "Excel UDF: _Excel_SheetList Example 1") ;_ArrayDisplay($aWorkSheets, "Array") Global $iRows = UBound($aWorkSheets, $UBOUND_ROWS) ; Total number of rows. In this example it will be 10. Global $iCols = UBound($aWorkSheets, $UBOUND_COLUMNS) ; Total number of columns. In this example it will be 20. Global $iDimension = UBound($aWorkSheets, $UBOUND_DIMENSIONS) ; The dimension of the array e.g. 1/2/3 dimensional. MsgBox($MB_SYSTEMMODAL, "", "The array is a " & $iDimension & " dimensional array with " & _ $iRows & " row(s) & " & $iCols & " column(s).") Dim $checkbox[$iRows] EndFunc ;==>excelsheetlist Func primarygui() ; Create a GUI with various controls. Local $hGUI = GUICreate("Script Controller", 300, ($iRows * 24)) ; Create a checkbox control. ;Local $idCheckbox = GUICtrlCreateCheckbox("Standard Checkbox", 10, 10, 185, 25) Local $Button2 = GUICtrlCreateButton("Close", 210, 200, 85, 25) Local $Button3 = GUICtrlCreateButton("Run", 210, 170, 85, 25) Local $Button1 = GUICtrlCreateButton("Discharge", 210, 140, 85, 25) For $i = 0 To UBound($checkbox) - 1 $checkbox[$i] = GUICtrlCreateCheckbox($aWorkSheets[$i][0], 8, 0 + ($i * 24)) ;, 81, 17) Next ; Display the GUI. GUISetState(@SW_SHOW, $hGUI) ; Loop until the user exits. While 1 $nMsg = GUIGetMsg() Select Case $nMsg = $GUI_EVENT_CLOSE Exit Case $nMsg = $Button2 ;Close Exit Case $nMsg = $Button1 MsgBox(0, "Discharge Button not configured", "Now Exiting") Exit Case $nMsg = $Button3 ;Run $fSelection = False For $i = 0 To UBound($checkbox) - 1 If BitAND(GUICtrlRead($checkbox[$i]), $GUI_CHECKED) Then $fSelection = True ExitLoop EndIf Next If $fSelection Then For $i = 0 To UBound($checkbox) - 1 Assign("status" & $i, GUICtrlRead($checkbox[$i])) Next $batchcount = 0 For $i = 0 To UBound($checkbox) - 1 If Eval("status" & $i) = 1 Then $batchcount = $batchcount + 1 ;Call ("o" & $i & "copy") ; if you want to call the functions directly, remove ; before the call and comment or delete the following DirCopy statement MsgBox(0, "Checking", "Checking that: " & $checkbox[$i] & " no, with title: " & $aWorkSheets[$i][0] & " was selected, Batch count: " & $batchcount) ; if you need only the DirCopy EndIf Next ExitLoop Else MsgBox(48, 'No Items Selected', 'You have not selected any Patients to Load, Please select from the list') EndIf EndSelect WEnd ; Delete the previous GUI and all controls. GUIDelete($hGUI) EndFunc ;==>primarygui Func _IsChecked($idControlID) Return BitAND(GUICtrlRead($idControlID), $GUI_CHECKED) = $GUI_CHECKED EndFunc ;==>_IsChecked Func batchinitial() If Eval("status" & $i) = 1 Then debugbox() $oWorkbook1.Sheets(1).Activate $bigloop = $bigloop + 1 $sheet = $aWorkSheets[$i][0] $oWorkbook1.Sheets($sheet).Activate debugbox() EndIf EndFunc ;==>batchinitial OpenExcel() excelsheetlist() primarygui() For $i = 0 To UBound($checkbox) - 1 batchinitial() While 1 If Eval("status" & $i) = 0 Then ExitLoop ;all the rest of my script loops etc WEnd Next  
    • FMS
      By FMS
      Hello,
      I'm building whit mine limited coding know-how a AI in Autoit....
      Just because..... why not
      It's not doing what i tought it would do.
      I hope somebody could help me whit this script?
      so far :
      -building an learning grid --> AI needs to guess the label in the grin whit only the X and Y value.
      -Building an array filled whit random values as weights.
      -quess the label
      -learn - if quess not the same as the label go change the weights

      At this point (the changing of the weights) I've some strange result and hope somebody could point me in the right direction
      I think that the problem is in the formula for changing the weights.

      PS. I'm also open for good coding practice   I'm learning coding as i go
      #AutoIt3Wrapper_Au3Check_Parameters=-d -w 1 -w 2 -w 3 -w 4 -w 5 -w 6 -w 7 #include <MsgBoxConstants.au3> #include <Array.au3> build_grid_list() build_neurons() _ArrayDisplay($gridlist,"$gridlist 0","",32) _ArrayDisplay($neurons,"$neurons 0","",32) For $i = 1 To UBound($gridlist,1) - 1 If $gridlist[$i][3] = 1 Then go_learn($neurons[1][0],$gridlist[$i][0]) EndIf Next _ArrayDisplay($gridlist,"$gridlist 1","",32) _ArrayDisplay($neurons,"q$neurons 1","",32) Func go_learn($neuron_ID,$gridlist_ID) Local $test = guess($gridlist_ID , $neuron_ID ) For $i = 1 To 5000 If $test <> $gridlist[$gridlist_ID][4] Then change_wieght($neuron_ID , $gridlist_ID ) $test = guess($gridlist_ID , $neuron_ID ) Else ExitLoop EndIf Next EndFunc Func guess($gridlist_ID , $neuron_ID = 1 ,$raw = 0);, $loop = 0 ) Local $temp = 0 ;~ For $i = 1 To ubound($neurons,1) -1 ; input1 * W1 + input2 * W2 + Bias(1) * W3 $temp = $gridlist[$gridlist_ID][1] * $neurons[$neuron_ID][1] + $gridlist[$gridlist_ID][2] * $neurons[$neuron_ID][2] + 1 * $neurons[$neuron_ID][3] ;activate (sign) If $temp >= 0 Then $neurons[$neuron_ID][6] = 1 Else $neurons[$neuron_ID][6] = -1 EndIf $gridlist[$gridlist_ID][5] = $neurons[$neuron_ID][6] $gridlist[$gridlist_ID][6] = $gridlist[$gridlist_ID][6] + 1 $neurons[$neuron_ID][9] = $neurons[$neuron_ID][9] + 1 If $raw = 0 Then Return $neurons[$neuron_ID][6] Else Return $temp EndIf EndFunc Func build_neurons($needed_neurons = 10 ) Global $neurons[$needed_neurons + 1][10] $neurons[0][0] = "id" $neurons[0][1] = "wieght1" $neurons[0][2] = "wieght2" $neurons[0][3] = "wieght3" $neurons[0][4] = "input1" $neurons[0][5] = "input2" $neurons[0][6] = "output" $neurons[0][7] = "tweak_counter" $neurons[0][8] = "not_tweak_counter" $neurons[0][9] = "quess_counter" Local $temp = 1 For $i = 1 To $needed_neurons; -1 $neurons[$i][0] = $i ;id Do ;zero_check output wieght1 $temp = Random(-1 , 1) Until $temp <> 0 $neurons[$i][1] = $temp ;wieght1 Do ;zero_check output wieght2 $temp = Random(-1 , 1) Until $temp <> 0 $neurons[$i][2] = $temp ;wieght2 Do ;zero_check output wieght3 $temp = Random(-1 , 1) Until $temp <> 0 $neurons[$i][3] = $temp ;wieght3 $neurons[$i][4] = 0 ;input1 $neurons[$i][5] = 0 ;input2 Do ;zero_check output $temp = Random(-1 , 1 , 1) Until $temp <> 0 $neurons[$i][6] = $temp ;output +1 / -1 ;~ $neurons[$i][6] = 0 ;output $neurons[$i][7] = 0 ;tweak_counter $neurons[$i][8] = 0 ;not_tweak_counter $neurons[$i][9] = 0 ;quess_counter Next EndFunc Func build_grid_list($grid_x = 10 ,$grid_y = 10 ) Global $gridlist[($grid_x * $grid_y) + 1 ][7] Local $counter = 1 $gridlist[0][0] = "ID" $gridlist[0][1] = "X" $gridlist[0][2] = "Y" $gridlist[0][3] = "Active" $gridlist[0][4] = "Label" $gridlist[0][5] = "quessed" $gridlist[0][6] = "quessed_counter" For $x = 0 to $grid_x - 1 For $y = 0 to $grid_y - 1 $gridlist[$counter][0] = $counter $gridlist[$counter][1] = $x $gridlist[$counter][2] = $y If Random(-1 , 1) >= 0 Then $gridlist[$counter][3] = 0 Else $gridlist[$counter][3] = 1 EndIf If $x > $y Then $gridlist[$counter][4] = 1 Else $gridlist[$counter][4] = -1 EndIf $gridlist[$counter][5] = -99 $gridlist[$counter][6] = 0 $counter = $counter + 1 Next Next EndFunc Func change_wieght($neuron_id , $grid_id );, $W1 , $W2 ) ;W1 = W1 + ^W1 (some change in W1) ;^W = err(known) * input ($neurons[$id][3] = "output") * learningrate ;$neurons[$id][1] = $neurons[$id][1] + "wieght1" Local $iReturn = False ; Desired | Quess | Error ; -1 -1 0 ; -1 +1 -2 ; +1 -1 +2 ; +1 +1 0 Local $error = $gridlist[$grid_id][4] - $neurons[$neuron_id][6] If $error <> 0 Then Local $learningrate = 0.1 Local $str_len1 = StringLen($neurons[$neuron_id][1]) Local $str_len2 = StringLen($neurons[$neuron_id][2]) Local $str_len3 = StringLen($neurons[$neuron_id][3]) Local $dif_weights1 = $error * $neurons[$neuron_id][1] * $learningrate Local $dif_weights2 = $error * $neurons[$neuron_id][2] * $learningrate Local $dif_weights3 = $error * $neurons[$neuron_id][3] * $learningrate Local $verschil1 = StringLeft($dif_weights1,$str_len1) Local $verschil2 = StringLeft($dif_weights2,$str_len2) Local $verschil3 = StringLeft($dif_weights3,$str_len3) Local $new_wieght1 = $neurons[$neuron_id][1] + $verschil1 Local $new_wieght2 = $neurons[$neuron_id][2] + $verschil2 Local $new_wieght3 = $neurons[$neuron_id][3] + $verschil3 $neurons[$neuron_id][1] = StringLeft($new_wieght1,$str_len1) $neurons[$neuron_id][2] = StringLeft($new_wieght2,$str_len2) $neurons[$neuron_id][3] = StringLeft($new_wieght3,$str_len3) $neurons[$neuron_id][7] = $neurons[$neuron_id][7] + 1 ;"counter" $iReturn = False Else $neurons[$neuron_id][8] = $neurons[$neuron_id][8] + 1 ;"not counter" $iReturn = True EndIf Return $iReturn EndFunc thanks in advanced.
       
    • Dimmae
      By Dimmae
      Hello,
      at first: i'm new here, so please forgive me my mistakes, and show them to me, just that i can learn to do better in the future.
      Now to my Problem: i have an excel sheet, where i just need some columns for further actions, but i have no idea how to add single columns to a new array.
      I found the following code(the one i just added as a file) from 'water' in this forum, but i wont get how i could add multiple columns into a new array.
      The biggest problem in my situation is that i dont know the count of the rows i need for the array, i just got a fix number of rows, which is 4.
       
      Hope you can help me, and sry again for this 'unlucky illustration'.
       
      btw: how can i add code shown as code here, instead of posting it as a attached file?.
       
       
       
      autoit-select-column.au3
      defects.xlsx
    • czardas
      By czardas
      Haven't had much time to code recently. However the following thread inspired me.
      The debate about linear, parallel and binary search methods was rather interesting and, in an attempt to be diplomatic, I decided to combine @jchd's suggestion with @LarsJ's binary search example. I decided that the binary search algorithm required modification to make it more linear. As usual, 'if you invent something, it probably already exists and if it already exists, it exists for a reason'. My first attempt was not all that good. The code worked but was really a mess. I blame peer pressure (to post an example of a parallel search method).  I will delete that old code in due course.
      With a little memory jogging and a glance at the help file, the solution turned out to be quite easy: I just needed a better understanding of Euler. Further modification will be needed to work with more complicated unicode strings. The output could be returned as an array or a delimitered string. I'm not so interested in those details. I'm just going to post the algorithm for now and anyone, who wants to, can modify it to suit their needs. Both arrays must contain at least 1 element.
      Local $aFoo = [0,1,2,3,4,5,6,7,9,10,11,12,13,14,15,16,19,20,23,24,26,30,35,39,40,41] Local $aBar = [0,1,5,6,7,8,9,10,11,12,13,14,17,18,19,21,24,25,26,27,34,35,38,40] ParallelExponetialSearch($aFoo, $aBar) ; Compares two lists - returning positive matches. Each input array must be unique (individually) and in alphabetical order. Func ParallelExponetialSearch($aFoo, $aBar) Local $sFind, _ $iMin_F = -1, $iMax_F = UBound($aFoo) -1, $Lo_F = $iMin_F, $Hi_F, _ $iMin_B = -1, $iMax_B = UBound($aBar) -1, $Lo_B = $iMin_B, $Hi_B While $iMin_F < $iMax_F And $iMin_B < $iMax_B ; Toggle Arrays - Which array has most untested elements? This is the one we want to search next, ; so we can bypass more comparisons because (in theory) mismatches have a greater chance of being skipped. If $iMax_F - $iMin_F >= $iMax_B - $iMin_B Then ; $aFoo has more (or an equal number of) untested elements $Hi_F = $iMax_F $iMin_B += 1 $sFind = $aBar[$iMin_B] While $Lo_F < $Hi_F ; search $aFoo For $i = 0 To Floor(Log($Hi_F - $Lo_F) / Log(2)) $Lo_F = $iMin_F + 2^$i If $aFoo[$Lo_F] = $sFind Then $iMin_F = $Lo_F ; each match should be added to the output [perhaps an array] ConsoleWrite($sFind & " found at $aFoo[" & $Lo_F & "] = $aBar[" & $iMin_B & "]" & @LF) ExitLoop 2 ElseIf $aFoo[$Lo_F] > $sFind Then $Hi_F = $Lo_F -1 $iMin_F += Floor(2^($i -1)) $Lo_F = $iMin_F ContinueLoop 2 EndIf Next $iMin_F = $Lo_F ; minimum increment is one WEnd Else ; $aBar has more untested elements $Hi_B = $iMax_B $iMin_F += 1 $sFind = $aFoo[$iMin_F] While $Lo_B < $Hi_B ; search $aBar For $i = 0 To Floor(Log($Hi_B - $Lo_B) / Log(2)) $Lo_B = $iMin_B + 2^$i If $aBar[$Lo_B] = $sFind Then $iMin_B = $Lo_B ; each match should be added to the output [perhaps an array] ConsoleWrite($sFind & " found at $aFoo[" & $iMin_F & "] = $aBar[" & $Lo_B & "]" & @LF) ExitLoop 2 ElseIf $aBar[$Lo_B] > $sFind Then $Hi_B = $Lo_B -1 $iMin_B += Floor(2^($i -1)) $Lo_B = $iMin_B ContinueLoop 2 EndIf Next $iMin_B = $Lo_B ; minimum increment is one WEnd EndIf WEnd EndFunc ;==> ParallelExponetialSearch I hope this will be useful to someone. I believe it deserved a thread of its own!