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Possible Maps Bug (Beta)


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Can somebody try to reproduce this bug?

It would be helpful to know if this issue appeares on other environments too.


Sometimes values of certain keys will return empty even if expicitly assigned a value before.


  • Map is bigger than ~50 key/values pairs
  • value is being worked with in a Function where a loop is iterating through the Map
  • before retrieving the value there is a isMap/MapKeys/MapAppend/MapRemove check on the Map value.
Dim $mMap[]

; Generate random key strings
For $i = 0 To 100
    $RndKey = ""
    For $i2 = 0 To 4
        $RndKey &= Chr(Random(65,90,1))
    $mMap[$RndKey] = 999

ConsoleWrite("-----------1-------------" & @CRLF); Unpredictable blank values


ConsoleWrite("-----------2-------------" & @CRLF); ByRef always works


ConsoleWrite("-----------3-------------" & @CRLF); not in a function always works

For $i In MapKeys($mMap)
    ConsoleWrite($i&": "&$mMap[$i]&@CRLF)

Func MapDisplay1( $m_Map )
    For $i In MapKeys($m_Map)
        isMap($m_Map[$i]) ;same problem with isMap($m_Map[$i]), MapKeys($m_Map[$i]), MapAppend/MapRemove but NOT with MapExists($m_Map,$i)
        ConsoleWrite($i&": "&$m_Map[$i]&@CRLF)

Func MapDisplay2( ByRef $m_Map ) 
    For $i In MapKeys($m_Map)
        ConsoleWrite($i&": "&$m_Map[$i]&@CRLF)


The value is not lost or overwritten on the global map, only on the local map inside the function.


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Ack, it's very strange. File a bug in tracker.

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