I'm self learning C++ from a book (Schaums Programming with c++) and i've come across something i want to try but it doesn't cover(as fair as i can tell).
I have a class that contains hrs:mins:secs.
Is it possible to write a type conversion that will return the Object in form of a total as an integer?
If not that may be why i can not find anything. Thanks.
Sure, you just have to write a cast operator. Assuming you want to convert your time to seconds:
class MyTime
{
...
public:
operator int() const
{
return hours_ * 3600 + minutes_ * 60 + seconds_;
}
}
In C++11 you can also add the keyword explicit to your operator so that your cast will explicitly require a static_cast<int> in order to compile.
explicit operator int() in C++11, alternatively int HashCode() or something.
HashCode would be a really intuitive name for a function that returns time duration in seconds :Poperator int() would surely not make sense.
Assuming this is a time duration with a resolution of seconds, then yes -- something like hours * 3600 + minutes * 60 + seconds should give you an integer number of seconds in the duration.
You can write a function to convert your class to the desired integer value you want. The typecast methods can be overloaded. See here: http://www.learncpp.com/cpp-tutorial/910-overloading-typecasts/
