Exceptional C++: 47 Engineering Puzzles, Programming Problems, and Solutions

Chapter 15. Writing Exception-Safe Code—Part 8

Difficulty: 9

That's it—this is the final leg of the miniseries. The end of the line is a good place to stop and reflect, and that's just what we'll do for these last three problems.

1. Which technique is better—using StackImpl as a private base class, or as a member object?

2. How reusable are the last two versions of Stack? What requirements do they put on T, the contained type? (In other words, what kinds of T can our latest Stack accept? The fewer the requirements are, the more reusable Stack will be.)

3. Should Stack provide exception specifications on its functions?

Solution

Let's answer the questions one at ...