Mastering C++ Programming

Interface segregation

Interface segregation design principle recommends modeling many small interfaces for a specific purpose, as opposed to modeling one bigger interface that represents many things. In the case of C++, an abstract class with pure virtual functions can be thought of as an interface.

Let's take a simple example to understand interface segregation:

#include <iostream>#include <string>using namespace std;class IEmployee {      public:          virtual string getDoor() = 0;          virtual string getStreet() = 0;          virtual string getCity() = 0;          virtual string getPinCode() = 0;          virtual string getState() = 0;          virtual string getCountry() = 0;          virtual string getName() = 0;          virtual string getTitle() = 0;          virtual string getCountryDialCode() = 0; virtual string ...