Template help, like Comparable in Java

[Floeps]

Hello, I'm new to C++, coming from mostly Java. I'm trying to implement a binary tree, and I want the Node class to have a key and value type, using templates. I have found that instead of the Comparable<X> interface in Java one uses the < operator. How do you specify this in the template?

template<class K, class V>
class Node
{
...
}

So how do I specify in the template, that the class K needs to have the < operator?

[helios]

You don't. You simply write the class assuming that K has an operator<() overload. If it doesn't, the user will get a compiler error.

[sohguanh]

Operator overloading is something that is missing from Java language. So is multiple inheritance but it can be mitigated using interfaces.

[Floeps]

Thanks!