Modern C++ Programming Cookbook

How to do it...

To enable a custom type to be used in range-based for loops, you need to do the following:

• Create mutable and constant iterators for the type that must implement the following operators:
  • operator++ for incrementing the iterator.
  • operator* for dereferencing the iterator and accessing the actual element pointed by the iterator.
  • operator!= for comparing with another iterator for inequality.

• Provide free begin() and end() functions for the type.

Given the earlier example of a simple range, we need to provide the following:

1. The following minimal implementation of an iterator class:

        template <typename T, typename C, size_t const Size>         class dummy_array_iterator_type         {         public:  dummy_array_iterator_type(C& collection, ...