Effective C++ 23. Prefer non-member non-friend functions to member functions

class WebBrowser {public:    ...    void clearCache();    void clearHistory();    void removeCookies();    ...};

class WebBrowser {public:    ...    void clearEverything();    ...};

greater encapsulation is the non-member non-friend function

void clearBrowser(WebBrowser& wb) {    wb.clearCache();    wb.clearHistory();    wb.removeCookies();}

// header "webbrowser.h"namespace WebBorwserStuff {    class WebBrowser {...};    ...}// header "webbrowserbookmarks.h"namespace WebBorwserStuff {    ...}// header "webbrowsercookies.h"namespace WebBorwserStuff {    ...}