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For the purposes of this documentation, it would be overkill to explain two closely-related concepts: operator overloading and template metaprogramming. Operator overloading allows you to overload operators (such as +, ||, [], and --) in the same way you overload functions. For instance, you can write an operator overload for Point2d that allows you to add two points together.

Template metaprogramming is also known as type-generic programming. In other words, it means writing code that can work with a variety of datatypes. You can write a class that works in the same way for integers, floats, and any other class. All you need is a datatype with the correct operators, and in some cases, methods.

Useful Websites

• http://www.cplusplus.com/
• http://en.cppreference.com/w/
• http://www.cprogramming.com/