Behavioral Design Patterns in C++ - Shapes Example - V

The video tutorial explains the implementation of the visitor pattern to calculate the area of shapes. It introduces adding a new visitor class and overriding visit methods. The tutorial uses the constant π from the Numbers header in C20 for calculations. It addresses handling special cases like lines, where area calculation is not possible, and suggests keeping the implementation empty or printing a message. The video demonstrates building and running the visitor pattern, highlighting its advantage of adding new operations without modifying existing code.

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