Exceptional C++ Style 40 New Engineering Puzzles, Programming Problems, and Solutions

Chapter 40. Monoliths “Unstrung,” Part 4: std::string Redux

Difficulty: 6

In this Item, we enter the home stretch, and uncover a (more) modest and minimal edition of std::string.

JG Question

1. Can string::erase be a nonmember function? Explain.

Guru Question

1. Analyze the remaining member functions of std::string and demonstrate whether or not they can or should instead be nonmember functions. Justify your answers.

   1. replace

   2. copy and substr

   3. compare

   4. find family (find, find_*, and rfind)

Solution

Still More Operations That Can Be Nonmember Nonfriends

In this Item, we're in the home stretch, and the finish line is in sight. Only a few functions remain—and we'll see that all of them can be implemented as nonmember nonfriends:

• erase (2—all but the “iter, iter” version) ...