unique_ptr

C++ Medium · Lesson 1 · On the house

unique_ptr

One owner. Lesson 1 is free — on the house.

Lessons · C++ Medium · Lesson 1 of 10 · On the house

unique_ptr

One owner.

Illustration for the C++ course — Lesson 1 is on the house. The rest opens with the paper, the Daily, or a gift.

This is C++ · medium, lesson 1: unique_ptr. Read the teaching and the stills before the checks. The quizzes are open book and test the subject — C++ itself — not product rules or layout trivia.

You already know Introductory and Easy. Medium assumes those habits and asks for sharper tools.

std::unique_ptr owns uniquely. make_unique creates one.

Cannot copy; can move.

Destructor deletes the object.

Prefer unique_ptr to raw owning pointers.

up

#include <memory>
auto p = std::make_unique<int>(3);

Match this when you type. Open book.

Sit with that still. Trace it top to bottom. Name each piece. The exercise asks you to match its essence.

If something fails when you try it yourself, change one thing. Read the error. Return to the still. I will not rush you.

Quiz

What does unique_ptr express?

Exclusive ownership
Shared ownership
No ownership
A reference

Quiz

Can you copy a unique_ptr?

No — move instead
Yes — freely
Only with new
Only in constexpr

Quiz

Which helper creates a unique_ptr?

std::make_unique
std::make_shared only
new unique
alloc_unique

Quiz

Based on today's teaching, which claim is right?

Unique owner.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Move-only.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

make_unique.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Unique owner.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

Move-only.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Quiz

Based on today's teaching, which claim is right?

make_unique.
The opposite of what the lesson said
The lesson forbade this topic
None of the subject material applies

Check

Match the still for: unique_ptr.

That is the lesson. When every quiz and exercise on this page is green, mark it passed. Next lesson when you are ready.

Open-book: the answers are on this page. Pass every quiz and check (10) to mark the lesson done. This visit: 0/10.

unique_ptr · C++ Medium (free) — The Gold Standard