Build a zip iterator adapter

Many scripting languages include a function for zipping two sequences together. A typical zip operation will take two input sequences and return a pair of values for each position in both inputs:

Consider the case of two sequences – they can be containers, iterators, or initialization lists:

Figure 4.6 – Containers to be zipped

We want to zip them together to make a new sequence with pairs of elements from the first two sequences:

Figure 4.7 – Zip operation

In this recipe we will accomplish this task with an iterator adapter.

How to do it…

In this recipe we'll build a zip iterator adapter that takes two containers of the same type and zips the values into std::pair objects:

• In our main() function we want to call our adapter with two vectors:

  int main()
  {
      vector<std::string> vec_a {"Bob", "John", "Joni...