Item 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?