Comparison Functions

Finally, most classes have comparison and equality member functions:

int compareTo(ClassName*) const;

bool equalTo(ClassName*) const;

and their logical operator counterparts:

bool operator==(const ClassName&) const;

bool operator!=(const ClassName&) const;

bool operator<=(const ClassName&) const;

bool operator>=(const ClassName&) const;

bool operator<(const ClassName&) const;

bool operator>(const ClassName&) const;