Redim deletes content of array

[Aktonius]

Redim deletes content of every row of 2D array once i redim it to have one more row, but if i access any content like $array[0][0] by console or just by assigning this value to some crap value just before redim then everything works fine.

I dont know why i am posting it as i will probably get "we need code" etc but this is nearly impossible to reproduce because everything works fine in a simple script, the thing is i have thousands lines of code

Still, what could possible be reason something like this happens?

Here is something that would work ok in normal code, but for some reason not in mine.

Func _ArrayAdd_Custom(ByRef $array, ByRef $add_array)
    Local $newsize = UBound($array) + 1

    ReDim $array[$newsize][8]
    For $column = 0 To 7
        $array[($newsize-1)][$column] = $add_array[$column]
    Next

EndFunc   ;==>_ArrayAdd_Custom

Edited February 18, 2012 by Aktonius

[Valik]

Sounds like a possible copy-on-write issue. Without reliable reproducing code, though, it doesn't seem like something to worry much about.

[Aktonius]

To solve this i simply changed it to

Func _ArrayAdd_Custom(ByRef $array, ByRef $add_array)
    Local $newsize = UBound($array) + 1
    Local $crapvalue

    ;WAKE UP ARRAY?!!? - after this redim wont delete content
    $crapvalue = $array[0][0]
  
    ReDim $array[$newsize][8]
    For $column = 0 To 7
        $array[($newsize-1)][$column] = $add_array[$column]
    Next

EndFunc   ;==>_ArrayAdd_Custom

Really one of weirdest issues i had with autoit, maybe calling this from wm_copydata has any connections to the problem, but then again i also tried to _array_add from dummy control, still same... Maybe it gives clues to someone with same issue one day

Edited February 19, 2012 by Aktonius

[water]

What version of AutoIt do you run?

I ran the following test script and get an array with 3 rows and 8 columsn as a result:

#include <array.au3>
Global $a2D[2][8] = [["1-1", "1-2", "1-3", "1-4", "1-5", "1-6", "1-7", "1-8"],["2-1", "2-2", "2-3", "2-4", "2-5", "2-6", "2-7", "2-8"]]
Global $a2Add[8] = ["3-1", "3-2", "3-3", "3-4", "3-5", "3-6", "3-7", "3-8"]
_ArrayAdd_Custom($a2D, $a2Add)
_ArrayDisplay($a2D)

Func _ArrayAdd_Custom(ByRef $array, ByRef $add_array)
    Local $newsize = UBound($array) + 1

    ReDim $array[$newsize][8]
    For $column = 0 To 7
        $array[($newsize - 1)][$column] = $add_array[$column]
    Next

EndFunc   ;==>_ArrayAdd_Custom

Edited February 19, 2012 by water