Slicing

In computer science, slicing is an operation to slice off a target value by size of the base type, thus extra parts will be gone.

For example, in C++

class A
{
  int age;
  String name;
};

class B : public A
{
  bool is_male;
};

B b;
A a;
a = b; // slicing occurs.

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See also: Object-oriented programming