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template <uint8_t Pin, uint32_t DebounceMS , bool OpenHigh, size_t Events>
int_button<Pin, DebounceMS, OpenHigh, Events>*
int_button<Pin, DebounceMS, OpenHigh, Events>::m_this = nullptr;

Rectangle r(10, 15, 24, 42);

Rectangle r;
r.left(10).top(15).width(24).height(42);

a^=b^=a^=b;

a^=b;
b^=a;
a^=b;

Private Sub Go(myList as list(of String))
     bgw1.RunWorkerAsync(me,myList)
End Sub

Private Sub bgw1_DoWork(sender As Object, e As DoWorkEventArgs) Handles bgw1.DoWork
  'background thread
   Dim myList As List(Of String) = e.Argument
   Dim listCount As Integer = myList.Count
   'long running process
   For i As Integer = 0 To listCount
      Dim resultInteger = DoWork(myList(i))
      bgw1.ReportProgress(resultInteger,myList(i))
   Next
End Sub

Private Sub bgw1_ProgressChanged(sender As Object, e As ProgressChangedEventArgs) Handles bgw1.ProgressChanged
   'main thread
   Dim p As Integer = e.ProgressPercentage
   Dim s As String = CStr(e.UserState)
   Select Case P
     Case 1
       lbl1.Text = s
     Case 2
       lbl2.Text = s
     Case Else
       lbl1.Text = "Invalid Result for " & s
       lbl2.Text = "Invalid Result for " & s
   End Select
End Sub

powershell find recursive