When Should You Use `std::unique_ptr`?

Is std::unique_ptr a Worthwhile Construct?

Despite std::unique_ptr's support for arrays, as exemplified by:

std::unique_ptr<int[]> p(new int[10]);

one may question its practical utility. Indeed, std::vector or std::array often provide more convenient alternatives.

Does unique_ptr Offer Unique Benefits?

However, certain scenarios necessitate the use of std::unique_ptr. For example:

• When std::vector's allocator-based approach is not feasible.
• When a dynamically sized array is required, precluding std::array.
• When arrays are acquired from external code that cannot be modified to return a vector.

When to Rely on std::unique_ptr

In essence, std::unique_ptr serves as a necessary tool for situations where other data structures fall short. It should be considered an option of last resort, used only when the aforementioned alternatives are unsuitable.

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