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added warning about wrapping wrapped functions
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@ -160,6 +160,14 @@ The following interactive session shows how to call them from Python.
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The file :file:`example/example5.cpp` contains a complete example that
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demonstrates how to work with callbacks and anonymous functions in more detail.
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.. warning::
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Keep in mind that passing a function from C++ to Python (or vice versa)
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will instantiate a piece of wrapper code that translates function
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invocations between the two languages. Copying the same function back and
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forth between Python and C++ many times in a row will cause these wrappers
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to accumulate, which can decrease performance.
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Overriding virtual functions in Python
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======================================
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