I’ll need to reflect on that

I do most of my programming these days in C#, though I have ended up learning a little Visual Basic over the years. It never ceases to amaze me how IL manages to support two languages with very different features.

I was surprised to find out the other day that VB allows you to branch from an exception handler back into the code that the handler is guarding, allowing you to write an infinite loop of the form.

Sub Main()
  Try
      Console.WriteLine(“start”)
    restart:
      Throw New Exception()
   Catch ex As Exception
    Console.WriteLine(“Handled”)
    GoTo restart
  End Try
End Sub

C# doesn’t allow that kind of branching.

static void Main(string[] args)
{
  try
  {
    Console.WriteLine(“start”);
    Restart:
    throw new Exception();
  }
  catch (Exception)
  {
    Console.WriteLine(“Handled”);
    goto Restart; // Invalid
  }
}

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