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

Chapter 39. Monoliths “Unstrung,” Part 3: std::string Diminishing

Difficulty: 5

The Slim-Fast diet continues, and std::string is indeed slimming fast.

JG Question

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

Guru Question

1. Analyze the following member functions of std::string and demonstrate whether or not they could or should instead be nonmember functions. Justify your an-swers.

   1. assign and +=/append/push_back

   2. insert

Solution

More Operations That Can Be Nonmember Nonfriends

In this Item, we'll see that all the following functions can be implemented as non-member nonfriends:

• resize (2)

• assign (6)

• += (3)

• append (6)

• push_back

• insert (7—all but the three-parameter version)

Let's investigate.

resize

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

Well, let's ...