Advanced C++ Topics

Overloading Operators

A commonly overloaded operator is the == operator, to compare two values.

bool operator==(Time a, Time b)
{
   return a.seconds_from(b) == 0;
}

For completeness, it is a good idea to also define a != operator.

bool operator!=(Time a, Time b)
{
   return a.seconds_from(b) != 0;
}

You may also find it useful to define a < operator.

bool operator<(Time a, Time b)
{
   return a.seconds_from(b) < 0;
}