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makesquare
2008 Sep 05
1
Derived classes
Coming from a C++ and C# background I would like to know how inheritance works with 'R'. The classical example is I can define an abstract class 'Shape' and have an array of 'Shape's but each instance could be a Circle, Square, Triangle, etc. because they all derive from 'Shape'. At runtime if I wish I can tell the type of the 'Shape' using various language